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merge into: xsl/face_sdk:with_vulkan_sample_framework
Branches Tags
xsl/face_sdk:uv_motion xsl/face_sdk:web xsl/face_sdk:phone xsl/face_sdk:main xsl/face_sdk:debug_fix_screen_change xsl/face_sdk:hd_motion xsl/face_sdk:debug0423 xsl/face_sdk:hair_demo xsl/face_sdk:com.inewme.uvmirror xsl/face_sdk:msaa8x xsl/face_sdk:build_aar_2 xsl/face_sdk:build_aar xsl/face_sdk:android_triangle xsl/face_sdk:can_gen_apk xsl/face_sdk:android_face_draw_0.1 xsl/face_sdk:android_gameactivity_init_proj xsl/face_sdk:with_vulkan_sample_framework
..
pull from: xsl/face_sdk:msaa8x
Branches Tags
xsl/face_sdk:web xsl/face_sdk:phone xsl/face_sdk:main xsl/face_sdk:debug_fix_screen_change xsl/face_sdk:hd_motion xsl/face_sdk:debug0423 xsl/face_sdk:hair_demo xsl/face_sdk:uv_motion xsl/face_sdk:com.inewme.uvmirror xsl/face_sdk:msaa8x xsl/face_sdk:build_aar_2 xsl/face_sdk:build_aar xsl/face_sdk:android_triangle xsl/face_sdk:can_gen_apk xsl/face_sdk:android_face_draw_0.1 xsl/face_sdk:android_gameactivity_init_proj xsl/face_sdk:with_vulkan_sample_framework
2 Commits
with_vulkan_sample_framework .. msaa8x
Author SHA1 Message Date
xsl 3c5c720486 完成三角形渲染的 msaa8x 抗锯齿 2025-11-18 11:09:16 +08:00
xsl c6db16a52b 交换链同步改写，加入日志 2025-11-06 17:51:10 +08:00
605 changed files with 388 additions and 144368 deletions
Expand all files Collapse all files
CMakeLists.txt
+6 -57
View File
@@ -2,32 +2,15 @@
project("sample") project("sample")
set(CMAKE_CXX_STANDARD 20) set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON) set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF) set(CMAKE_CXX_EXTENSIONS OFF)
if(MSVC)
add_compile_options(/Zc:__cplusplus)
endif()
if(CMAKE_SYSTEM_NAME STREQUAL "Android") if(CMAKE_SYSTEM_NAME STREQUAL "Android")
message(STATUS "Building for Android") message(STATUS "Building for Android")
include_directories( include_directories(
vulkan vulkan
${CMAKE_CURRENT_LIST_DIR}/vulkan
${CMAKE_CURRENT_LIST_DIR}/vulkan/framework
${CMAKE_CURRENT_LIST_DIR}/vulkan/components
${CMAKE_CURRENT_LIST_DIR}/vulkan/components/core
${CMAKE_CURRENT_LIST_DIR}/vulkan/components/core/include
${CMAKE_CURRENT_LIST_DIR}/third_party
${CMAKE_CURRENT_LIST_DIR}/third_party/vma
${CMAKE_CURRENT_LIST_DIR}/third_party/vma/include
${CMAKE_CURRENT_LIST_DIR}/third_party/volk
${CMAKE_CURRENT_LIST_DIR}/third_party/fmt
${CMAKE_CURRENT_LIST_DIR}/third_party/fmt/include
) )
add_library(sample SHARED add_library(sample SHARED
@@ -37,9 +20,6 @@ if(CMAKE_SYSTEM_NAME STREQUAL "Android")
vulkan/AppBase.cpp vulkan/AppBase.cpp
vulkan/Application.h vulkan/Application.h
vulkan/Application.cpp vulkan/Application.cpp
vulkan/FaceApp.h
vulkan/FaceApp.cpp
vulkan/lodepng.cpp
) )
find_package(game-activity REQUIRED CONFIG) find_package(game-activity REQUIRED CONFIG)
@@ -61,26 +41,11 @@ endif()
if(CMAKE_SYSTEM_NAME STREQUAL "Windows" OR WIN32) if(CMAKE_SYSTEM_NAME STREQUAL "Windows" OR WIN32)
message(STATUS "Building for Windows") message(STATUS "Building for Windows")
add_compile_options(/utf-8)
add_compile_definitions(_SILENCE_CXX17_CODECVT_HEADER_DEPRECATION_WARNING)
include_directories( include_directories(
${CMAKE_CURRENT_LIST_DIR}/vulkan
${CMAKE_CURRENT_LIST_DIR}/vulkan/framework
${CMAKE_CURRENT_LIST_DIR}/vulkan/components
${CMAKE_CURRENT_LIST_DIR}/vulkan/components/core
${CMAKE_CURRENT_LIST_DIR}/vulkan/components/core/include
${CMAKE_CURRENT_LIST_DIR}/third_party
${CMAKE_CURRENT_LIST_DIR}/third_party/vma
${CMAKE_CURRENT_LIST_DIR}/third_party/vma/include
${CMAKE_CURRENT_LIST_DIR}/third_party/fmt
${CMAKE_CURRENT_LIST_DIR}/third_party/fmt/include
${CMAKE_CURRENT_LIST_DIR}/third_party/volk
"third_party/glfw-3.4/output/include" "third_party/glfw-3.4/output/include"
"C:/VulkanSDK/1.4.321.1/Include" "C:/VulkanSDK/1.4.321.1/Include"
) )
link_libraries( link_libraries(
# "${CMAKE_CURRENT_LIST_DIR}/third_party/glfw-3.4/output/lib/glfw3.lib" # "${CMAKE_CURRENT_LIST_DIR}/third_party/glfw-3.4/output/lib/glfw3.lib"
"${CMAKE_CURRENT_LIST_DIR}/third_party/glfw-3.4/output/glfw3.lib" "${CMAKE_CURRENT_LIST_DIR}/third_party/glfw-3.4/output/glfw3.lib"
@@ -89,26 +54,10 @@ if(CMAKE_SYSTEM_NAME STREQUAL "Windows" OR WIN32)
# 将源代码添加到此项目的可执行文件。 # 将源代码添加到此项目的可执行文件。
add_executable (sample add_executable (sample
vulkan/AppBase.h "vulkan/main.cpp"
vulkan/AppBase.cpp "vulkan/AppBase.h"
vulkan/Application.h "vulkan/AppBase.cpp"
vulkan/Application.cpp "vulkan/Application.h"
vulkan/FaceApp.h "vulkan/Application.cpp"
vulkan/FaceApp.cpp
vulkan/main.cpp
vulkan/lodepng.cpp
third_party/vma/src/VmaUsage.h
third_party/vma/src/VmaUsage.cpp
third_party/fmt/src/format.cc
vulkan/framework/common/error.cpp
vulkan/framework/common/strings.cpp
vulkan/framework/core/allocated.cpp
) )
endif() endif()
target_compile_definitions(sample PRIVATE VK_NO_PROTOTYPES)
target_compile_definitions(sample PRIVATE GLM_ENABLE_EXPERIMENTAL)
target_compile_definitions(sample PRIVATE VULKAN_HPP_NO_STRUCT_CONSTRUCTORS)
app/src/main/cpp/main.cpp
+2 -2
View File
@@ -3,7 +3,7 @@
#include <game-activity/native_app_glue/android_native_app_glue.h> #include <game-activity/native_app_glue/android_native_app_glue.h>
#include <game-activity/GameActivity.h> #include <game-activity/GameActivity.h>
#include "AndroidOut.h" #include "AndroidOut.h"
#include "FaceApp.h" #include "Application.h"
#include <android/asset_manager.h> #include <android/asset_manager.h>
#include <chrono> #include <chrono>
#include <thread> #include <thread>
@@ -33,7 +33,7 @@ void android_main(struct android_app *pApp) {
aout << "Welcome to android_main" << std::endl; aout << "Welcome to android_main" << std::endl;
g_android_app = pApp; g_android_app = pApp;
g_assetManager = pApp->activity->assetManager; g_assetManager = pApp->activity->assetManager;
FaceApp application; Application application;
g_Application = &application; g_Application = &application;
pApp->onAppCmd = handle_cmd; pApp->onAppCmd = handle_cmd;
third_party/fmt/include/fmt/args.h
Vendored
-220
View File
@@ -1,220 +0,0 @@
// Formatting library for C++ - dynamic argument lists
//
// Copyright (c) 2012 - present, Victor Zverovich
// All rights reserved.
//
// For the license information refer to format.h.
#ifndef FMT_ARGS_H_
#define FMT_ARGS_H_
#ifndef FMT_MODULE
# include <functional> // std::reference_wrapper
# include <memory> // std::unique_ptr
# include <vector>
#endif
#include "format.h" // std_string_view
FMT_BEGIN_NAMESPACE
namespace detail {
template <typename T> struct is_reference_wrapper : std::false_type {};
template <typename T>
struct is_reference_wrapper<std::reference_wrapper<T>> : std::true_type {};
template <typename T> auto unwrap(const T& v) -> const T& { return v; }
template <typename T>
auto unwrap(const std::reference_wrapper<T>& v) -> const T& {
return static_cast<const T&>(v);
}
// node is defined outside dynamic_arg_list to workaround a C2504 bug in MSVC
// 2022 (v17.10.0).
//
// Workaround for clang's -Wweak-vtables. Unlike for regular classes, for
// templates it doesn't complain about inability to deduce single translation
// unit for placing vtable. So node is made a fake template.
template <typename = void> struct node {
virtual ~node() = default;
std::unique_ptr<node<>> next;
};
class dynamic_arg_list {
template <typename T> struct typed_node : node<> {
T value;
template <typename Arg>
FMT_CONSTEXPR typed_node(const Arg& arg) : value(arg) {}
template <typename Char>
FMT_CONSTEXPR typed_node(const basic_string_view<Char>& arg)
: value(arg.data(), arg.size()) {}
};
std::unique_ptr<node<>> head_;
public:
template <typename T, typename Arg> auto push(const Arg& arg) -> const T& {
auto new_node = std::unique_ptr<typed_node<T>>(new typed_node<T>(arg));
auto& value = new_node->value;
new_node->next = std::move(head_);
head_ = std::move(new_node);
return value;
}
};
} // namespace detail
/**
* A dynamic list of formatting arguments with storage.
*
* It can be implicitly converted into `fmt::basic_format_args` for passing
* into type-erased formatting functions such as `fmt::vformat`.
*/
template <typename Context> class dynamic_format_arg_store {
private:
using char_type = typename Context::char_type;
template <typename T> struct need_copy {
static constexpr detail::type mapped_type =
detail::mapped_type_constant<T, char_type>::value;
enum {
value = !(detail::is_reference_wrapper<T>::value ||
std::is_same<T, basic_string_view<char_type>>::value ||
std::is_same<T, detail::std_string_view<char_type>>::value ||
(mapped_type != detail::type::cstring_type &&
mapped_type != detail::type::string_type &&
mapped_type != detail::type::custom_type))
};
};
template <typename T>
using stored_t = conditional_t<
std::is_convertible<T, std::basic_string<char_type>>::value &&
!detail::is_reference_wrapper<T>::value,
std::basic_string<char_type>, T>;
// Storage of basic_format_arg must be contiguous.
std::vector<basic_format_arg<Context>> data_;
std::vector<detail::named_arg_info<char_type>> named_info_;
// Storage of arguments not fitting into basic_format_arg must grow
// without relocation because items in data_ refer to it.
detail::dynamic_arg_list dynamic_args_;
friend class basic_format_args<Context>;
auto data() const -> const basic_format_arg<Context>* {
return named_info_.empty() ? data_.data() : data_.data() + 1;
}
template <typename T> void emplace_arg(const T& arg) {
data_.emplace_back(arg);
}
template <typename T>
void emplace_arg(const detail::named_arg<char_type, T>& arg) {
if (named_info_.empty())
data_.insert(data_.begin(), basic_format_arg<Context>(nullptr, 0));
data_.emplace_back(detail::unwrap(arg.value));
auto pop_one = [](std::vector<basic_format_arg<Context>>* data) {
data->pop_back();
};
std::unique_ptr<std::vector<basic_format_arg<Context>>, decltype(pop_one)>
guard{&data_, pop_one};
named_info_.push_back({arg.name, static_cast<int>(data_.size() - 2u)});
data_[0] = {named_info_.data(), named_info_.size()};
guard.release();
}
public:
constexpr dynamic_format_arg_store() = default;
operator basic_format_args<Context>() const {
return basic_format_args<Context>(data(), static_cast<int>(data_.size()),
!named_info_.empty());
}
/**
* Adds an argument into the dynamic store for later passing to a formatting
* function.
*
* Note that custom types and string types (but not string views) are copied
* into the store dynamically allocating memory if necessary.
*
* **Example**:
*
* fmt::dynamic_format_arg_store<fmt::format_context> store;
* store.push_back(42);
* store.push_back("abc");
* store.push_back(1.5f);
* std::string result = fmt::vformat("{} and {} and {}", store);
*/
template <typename T> void push_back(const T& arg) {
if (detail::const_check(need_copy<T>::value))
emplace_arg(dynamic_args_.push<stored_t<T>>(arg));
else
emplace_arg(detail::unwrap(arg));
}
/**
* Adds a reference to the argument into the dynamic store for later passing
* to a formatting function.
*
* **Example**:
*
* fmt::dynamic_format_arg_store<fmt::format_context> store;
* char band[] = "Rolling Stones";
* store.push_back(std::cref(band));
* band[9] = 'c'; // Changing str affects the output.
* std::string result = fmt::vformat("{}", store);
* // result == "Rolling Scones"
*/
template <typename T> void push_back(std::reference_wrapper<T> arg) {
static_assert(
need_copy<T>::value,
"objects of built-in types and string views are always copied");
emplace_arg(arg.get());
}
/**
* Adds named argument into the dynamic store for later passing to a
* formatting function. `std::reference_wrapper` is supported to avoid
* copying of the argument. The name is always copied into the store.
*/
template <typename T>
void push_back(const detail::named_arg<char_type, T>& arg) {
const char_type* arg_name =
dynamic_args_.push<std::basic_string<char_type>>(arg.name).c_str();
if (detail::const_check(need_copy<T>::value)) {
emplace_arg(
fmt::arg(arg_name, dynamic_args_.push<stored_t<T>>(arg.value)));
} else {
emplace_arg(fmt::arg(arg_name, arg.value));
}
}
/// Erase all elements from the store.
void clear() {
data_.clear();
named_info_.clear();
dynamic_args_ = {};
}
/// Reserves space to store at least `new_cap` arguments including
/// `new_cap_named` named arguments.
void reserve(size_t new_cap, size_t new_cap_named) {
FMT_ASSERT(new_cap >= new_cap_named,
"set of arguments includes set of named arguments");
data_.reserve(new_cap);
named_info_.reserve(new_cap_named);
}
/// Returns the number of elements in the store.
size_t size() const noexcept { return data_.size(); }
};
FMT_END_NAMESPACE
#endif // FMT_ARGS_H_
third_party/fmt/include/fmt/base.h
Vendored
-2989
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third_party/fmt/include/fmt/chrono.h
Vendored
-2330
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third_party/fmt/include/fmt/color.h
Vendored
-637
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@@ -1,637 +0,0 @@
// Formatting library for C++ - color support
//
// Copyright (c) 2018 - present, Victor Zverovich and fmt contributors
// All rights reserved.
//
// For the license information refer to format.h.
#ifndef FMT_COLOR_H_
#define FMT_COLOR_H_
#include "format.h"
FMT_BEGIN_NAMESPACE
FMT_BEGIN_EXPORT
enum class color : uint32_t {
alice_blue = 0xF0F8FF, // rgb(240,248,255)
antique_white = 0xFAEBD7, // rgb(250,235,215)
aqua = 0x00FFFF, // rgb(0,255,255)
aquamarine = 0x7FFFD4, // rgb(127,255,212)
azure = 0xF0FFFF, // rgb(240,255,255)
beige = 0xF5F5DC, // rgb(245,245,220)
bisque = 0xFFE4C4, // rgb(255,228,196)
black = 0x000000, // rgb(0,0,0)
blanched_almond = 0xFFEBCD, // rgb(255,235,205)
blue = 0x0000FF, // rgb(0,0,255)
blue_violet = 0x8A2BE2, // rgb(138,43,226)
brown = 0xA52A2A, // rgb(165,42,42)
burly_wood = 0xDEB887, // rgb(222,184,135)
cadet_blue = 0x5F9EA0, // rgb(95,158,160)
chartreuse = 0x7FFF00, // rgb(127,255,0)
chocolate = 0xD2691E, // rgb(210,105,30)
coral = 0xFF7F50, // rgb(255,127,80)
cornflower_blue = 0x6495ED, // rgb(100,149,237)
cornsilk = 0xFFF8DC, // rgb(255,248,220)
crimson = 0xDC143C, // rgb(220,20,60)
cyan = 0x00FFFF, // rgb(0,255,255)
dark_blue = 0x00008B, // rgb(0,0,139)
dark_cyan = 0x008B8B, // rgb(0,139,139)
dark_golden_rod = 0xB8860B, // rgb(184,134,11)
dark_gray = 0xA9A9A9, // rgb(169,169,169)
dark_green = 0x006400, // rgb(0,100,0)
dark_khaki = 0xBDB76B, // rgb(189,183,107)
dark_magenta = 0x8B008B, // rgb(139,0,139)
dark_olive_green = 0x556B2F, // rgb(85,107,47)
dark_orange = 0xFF8C00, // rgb(255,140,0)
dark_orchid = 0x9932CC, // rgb(153,50,204)
dark_red = 0x8B0000, // rgb(139,0,0)
dark_salmon = 0xE9967A, // rgb(233,150,122)
dark_sea_green = 0x8FBC8F, // rgb(143,188,143)
dark_slate_blue = 0x483D8B, // rgb(72,61,139)
dark_slate_gray = 0x2F4F4F, // rgb(47,79,79)
dark_turquoise = 0x00CED1, // rgb(0,206,209)
dark_violet = 0x9400D3, // rgb(148,0,211)
deep_pink = 0xFF1493, // rgb(255,20,147)
deep_sky_blue = 0x00BFFF, // rgb(0,191,255)
dim_gray = 0x696969, // rgb(105,105,105)
dodger_blue = 0x1E90FF, // rgb(30,144,255)
fire_brick = 0xB22222, // rgb(178,34,34)
floral_white = 0xFFFAF0, // rgb(255,250,240)
forest_green = 0x228B22, // rgb(34,139,34)
fuchsia = 0xFF00FF, // rgb(255,0,255)
gainsboro = 0xDCDCDC, // rgb(220,220,220)
ghost_white = 0xF8F8FF, // rgb(248,248,255)
gold = 0xFFD700, // rgb(255,215,0)
golden_rod = 0xDAA520, // rgb(218,165,32)
gray = 0x808080, // rgb(128,128,128)
green = 0x008000, // rgb(0,128,0)
green_yellow = 0xADFF2F, // rgb(173,255,47)
honey_dew = 0xF0FFF0, // rgb(240,255,240)
hot_pink = 0xFF69B4, // rgb(255,105,180)
indian_red = 0xCD5C5C, // rgb(205,92,92)
indigo = 0x4B0082, // rgb(75,0,130)
ivory = 0xFFFFF0, // rgb(255,255,240)
khaki = 0xF0E68C, // rgb(240,230,140)
lavender = 0xE6E6FA, // rgb(230,230,250)
lavender_blush = 0xFFF0F5, // rgb(255,240,245)
lawn_green = 0x7CFC00, // rgb(124,252,0)
lemon_chiffon = 0xFFFACD, // rgb(255,250,205)
light_blue = 0xADD8E6, // rgb(173,216,230)
light_coral = 0xF08080, // rgb(240,128,128)
light_cyan = 0xE0FFFF, // rgb(224,255,255)
light_golden_rod_yellow = 0xFAFAD2, // rgb(250,250,210)
light_gray = 0xD3D3D3, // rgb(211,211,211)
light_green = 0x90EE90, // rgb(144,238,144)
light_pink = 0xFFB6C1, // rgb(255,182,193)
light_salmon = 0xFFA07A, // rgb(255,160,122)
light_sea_green = 0x20B2AA, // rgb(32,178,170)
light_sky_blue = 0x87CEFA, // rgb(135,206,250)
light_slate_gray = 0x778899, // rgb(119,136,153)
light_steel_blue = 0xB0C4DE, // rgb(176,196,222)
light_yellow = 0xFFFFE0, // rgb(255,255,224)
lime = 0x00FF00, // rgb(0,255,0)
lime_green = 0x32CD32, // rgb(50,205,50)
linen = 0xFAF0E6, // rgb(250,240,230)
magenta = 0xFF00FF, // rgb(255,0,255)
maroon = 0x800000, // rgb(128,0,0)
medium_aquamarine = 0x66CDAA, // rgb(102,205,170)
medium_blue = 0x0000CD, // rgb(0,0,205)
medium_orchid = 0xBA55D3, // rgb(186,85,211)
medium_purple = 0x9370DB, // rgb(147,112,219)
medium_sea_green = 0x3CB371, // rgb(60,179,113)
medium_slate_blue = 0x7B68EE, // rgb(123,104,238)
medium_spring_green = 0x00FA9A, // rgb(0,250,154)
medium_turquoise = 0x48D1CC, // rgb(72,209,204)
medium_violet_red = 0xC71585, // rgb(199,21,133)
midnight_blue = 0x191970, // rgb(25,25,112)
mint_cream = 0xF5FFFA, // rgb(245,255,250)
misty_rose = 0xFFE4E1, // rgb(255,228,225)
moccasin = 0xFFE4B5, // rgb(255,228,181)
navajo_white = 0xFFDEAD, // rgb(255,222,173)
navy = 0x000080, // rgb(0,0,128)
old_lace = 0xFDF5E6, // rgb(253,245,230)
olive = 0x808000, // rgb(128,128,0)
olive_drab = 0x6B8E23, // rgb(107,142,35)
orange = 0xFFA500, // rgb(255,165,0)
orange_red = 0xFF4500, // rgb(255,69,0)
orchid = 0xDA70D6, // rgb(218,112,214)
pale_golden_rod = 0xEEE8AA, // rgb(238,232,170)
pale_green = 0x98FB98, // rgb(152,251,152)
pale_turquoise = 0xAFEEEE, // rgb(175,238,238)
pale_violet_red = 0xDB7093, // rgb(219,112,147)
papaya_whip = 0xFFEFD5, // rgb(255,239,213)
peach_puff = 0xFFDAB9, // rgb(255,218,185)
peru = 0xCD853F, // rgb(205,133,63)
pink = 0xFFC0CB, // rgb(255,192,203)
plum = 0xDDA0DD, // rgb(221,160,221)
powder_blue = 0xB0E0E6, // rgb(176,224,230)
purple = 0x800080, // rgb(128,0,128)
rebecca_purple = 0x663399, // rgb(102,51,153)
red = 0xFF0000, // rgb(255,0,0)
rosy_brown = 0xBC8F8F, // rgb(188,143,143)
royal_blue = 0x4169E1, // rgb(65,105,225)
saddle_brown = 0x8B4513, // rgb(139,69,19)
salmon = 0xFA8072, // rgb(250,128,114)
sandy_brown = 0xF4A460, // rgb(244,164,96)
sea_green = 0x2E8B57, // rgb(46,139,87)
sea_shell = 0xFFF5EE, // rgb(255,245,238)
sienna = 0xA0522D, // rgb(160,82,45)
silver = 0xC0C0C0, // rgb(192,192,192)
sky_blue = 0x87CEEB, // rgb(135,206,235)
slate_blue = 0x6A5ACD, // rgb(106,90,205)
slate_gray = 0x708090, // rgb(112,128,144)
snow = 0xFFFAFA, // rgb(255,250,250)
spring_green = 0x00FF7F, // rgb(0,255,127)
steel_blue = 0x4682B4, // rgb(70,130,180)
tan = 0xD2B48C, // rgb(210,180,140)
teal = 0x008080, // rgb(0,128,128)
thistle = 0xD8BFD8, // rgb(216,191,216)
tomato = 0xFF6347, // rgb(255,99,71)
turquoise = 0x40E0D0, // rgb(64,224,208)
violet = 0xEE82EE, // rgb(238,130,238)
wheat = 0xF5DEB3, // rgb(245,222,179)
white = 0xFFFFFF, // rgb(255,255,255)
white_smoke = 0xF5F5F5, // rgb(245,245,245)
yellow = 0xFFFF00, // rgb(255,255,0)
yellow_green = 0x9ACD32 // rgb(154,205,50)
}; // enum class color
enum class terminal_color : uint8_t {
black = 30,
red,
green,
yellow,
blue,
magenta,
cyan,
white,
bright_black = 90,
bright_red,
bright_green,
bright_yellow,
bright_blue,
bright_magenta,
bright_cyan,
bright_white
};
enum class emphasis : uint8_t {
bold = 1,
faint = 1 << 1,
italic = 1 << 2,
underline = 1 << 3,
blink = 1 << 4,
reverse = 1 << 5,
conceal = 1 << 6,
strikethrough = 1 << 7,
};
// rgb is a struct for red, green and blue colors.
// Using the name "rgb" makes some editors show the color in a tooltip.
struct rgb {
constexpr rgb() : r(0), g(0), b(0) {}
constexpr rgb(uint8_t r_, uint8_t g_, uint8_t b_) : r(r_), g(g_), b(b_) {}
constexpr rgb(uint32_t hex)
: r((hex >> 16) & 0xFF), g((hex >> 8) & 0xFF), b(hex & 0xFF) {}
constexpr rgb(color hex)
: r((uint32_t(hex) >> 16) & 0xFF),
g((uint32_t(hex) >> 8) & 0xFF),
b(uint32_t(hex) & 0xFF) {}
uint8_t r;
uint8_t g;
uint8_t b;
};
namespace detail {
// A bit-packed variant of an RGB color, a terminal color, or unset color.
// see text_style for the bit-packing scheme.
struct color_type {
constexpr color_type() noexcept = default;
constexpr color_type(color rgb_color) noexcept
: value_(static_cast<uint32_t>(rgb_color) | (1 << 24)) {}
constexpr color_type(rgb rgb_color) noexcept
: color_type(static_cast<color>(
(static_cast<uint32_t>(rgb_color.r) << 16) |
(static_cast<uint32_t>(rgb_color.g) << 8) | rgb_color.b)) {}
constexpr color_type(terminal_color term_color) noexcept
: value_(static_cast<uint32_t>(term_color) | (3 << 24)) {}
constexpr auto is_terminal_color() const noexcept -> bool {
return (value_ & (1 << 25)) != 0;
}
constexpr auto value() const noexcept -> uint32_t {
return value_ & 0xFFFFFF;
}
constexpr color_type(uint32_t value) noexcept : value_(value) {}
uint32_t value_ = 0;
};
} // namespace detail
/// A text style consisting of foreground and background colors and emphasis.
class text_style {
// The information is packed as follows:
// ┌──┐
// │ 0│─┐
// │..│ ├── foreground color value
// │23│─┘
// ├──┤
// │24│─┬── discriminator for the above value. 00 if unset, 01 if it's
// │25│─┘ an RGB color, or 11 if it's a terminal color (10 is unused)
// ├──┤
// │26│──── overflow bit, always zero (see below)
// ├──┤
// │27│─┐
// │..│ │
// │50│ │
// ├──┤ │
// │51│ ├── background color (same format as the foreground color)
// │52│ │
// ├──┤ │
// │53│─┘
// ├──┤
// │54│─┐
// │..│ ├── emphases
// │61│─┘
// ├──┤
// │62│─┬── unused
// │63│─┘
// └──┘
// The overflow bits are there to make operator|= efficient.
// When ORing, we must throw if, for either the foreground or background,
// one style specifies a terminal color and the other specifies any color
// (terminal or RGB); in other words, if one discriminator is 11 and the
// other is 11 or 01.
//
// We do that check by adding the styles. Consider what adding does to each
// possible pair of discriminators:
// 00 + 00 = 000
// 01 + 00 = 001
// 11 + 00 = 011
// 01 + 01 = 010
// 11 + 01 = 100 (!!)
// 11 + 11 = 110 (!!)
// In the last two cases, the ones we want to catch, the third bit——the
// overflow bit——is set. Bingo.
//
// We must take into account the possible carry bit from the bits
// before the discriminator. The only potentially problematic case is
// 11 + 00 = 011 (a carry bit would make it 100, not good!), but a carry
// bit is impossible in that case, because 00 (unset color) means the
// 24 bits that precede the discriminator are all zero.
//
// This test can be applied to both colors simultaneously.
public:
FMT_CONSTEXPR text_style(emphasis em = emphasis()) noexcept
: style_(static_cast<uint64_t>(em) << 54) {}
FMT_CONSTEXPR auto operator|=(text_style rhs) -> text_style& {
if (((style_ + rhs.style_) & ((1ULL << 26) | (1ULL << 53))) != 0)
report_error("can't OR a terminal color");
style_ |= rhs.style_;
return *this;
}
friend FMT_CONSTEXPR auto operator|(text_style lhs, text_style rhs)
-> text_style {
return lhs |= rhs;
}
FMT_CONSTEXPR auto operator==(text_style rhs) const noexcept -> bool {
return style_ == rhs.style_;
}
FMT_CONSTEXPR auto operator!=(text_style rhs) const noexcept -> bool {
return !(*this == rhs);
}
FMT_CONSTEXPR auto has_foreground() const noexcept -> bool {
return (style_ & (1 << 24)) != 0;
}
FMT_CONSTEXPR auto has_background() const noexcept -> bool {
return (style_ & (1ULL << 51)) != 0;
}
FMT_CONSTEXPR auto has_emphasis() const noexcept -> bool {
return (style_ >> 54) != 0;
}
FMT_CONSTEXPR auto get_foreground() const noexcept -> detail::color_type {
FMT_ASSERT(has_foreground(), "no foreground specified for this style");
return style_ & 0x3FFFFFF;
}
FMT_CONSTEXPR auto get_background() const noexcept -> detail::color_type {
FMT_ASSERT(has_background(), "no background specified for this style");
return (style_ >> 27) & 0x3FFFFFF;
}
FMT_CONSTEXPR auto get_emphasis() const noexcept -> emphasis {
FMT_ASSERT(has_emphasis(), "no emphasis specified for this style");
return static_cast<emphasis>(style_ >> 54);
}
private:
FMT_CONSTEXPR text_style(uint64_t style) noexcept : style_(style) {}
friend FMT_CONSTEXPR auto fg(detail::color_type foreground) noexcept
-> text_style;
friend FMT_CONSTEXPR auto bg(detail::color_type background) noexcept
-> text_style;
uint64_t style_ = 0;
};
/// Creates a text style from the foreground (text) color.
FMT_CONSTEXPR inline auto fg(detail::color_type foreground) noexcept
-> text_style {
return foreground.value_;
}
/// Creates a text style from the background color.
FMT_CONSTEXPR inline auto bg(detail::color_type background) noexcept
-> text_style {
return static_cast<uint64_t>(background.value_) << 27;
}
FMT_CONSTEXPR inline auto operator|(emphasis lhs, emphasis rhs) noexcept
-> text_style {
return text_style(lhs) | rhs;
}
namespace detail {
template <typename Char> struct ansi_color_escape {
FMT_CONSTEXPR ansi_color_escape(color_type text_color,
const char* esc) noexcept {
// If we have a terminal color, we need to output another escape code
// sequence.
if (text_color.is_terminal_color()) {
bool is_background = esc == string_view("\x1b[48;2;");
uint32_t value = text_color.value();
// Background ASCII codes are the same as the foreground ones but with
// 10 more.
if (is_background) value += 10u;
size_t index = 0;
buffer[index++] = static_cast<Char>('\x1b');
buffer[index++] = static_cast<Char>('[');
if (value >= 100u) {
buffer[index++] = static_cast<Char>('1');
value %= 100u;
}
buffer[index++] = static_cast<Char>('0' + value / 10u);
buffer[index++] = static_cast<Char>('0' + value % 10u);
buffer[index++] = static_cast<Char>('m');
buffer[index++] = static_cast<Char>('\0');
return;
}
for (int i = 0; i < 7; i++) {
buffer[i] = static_cast<Char>(esc[i]);
}
rgb color(text_color.value());
to_esc(color.r, buffer + 7, ';');
to_esc(color.g, buffer + 11, ';');
to_esc(color.b, buffer + 15, 'm');
buffer[19] = static_cast<Char>(0);
}
FMT_CONSTEXPR ansi_color_escape(emphasis em) noexcept {
uint8_t em_codes[num_emphases] = {};
if (has_emphasis(em, emphasis::bold)) em_codes[0] = 1;
if (has_emphasis(em, emphasis::faint)) em_codes[1] = 2;
if (has_emphasis(em, emphasis::italic)) em_codes[2] = 3;
if (has_emphasis(em, emphasis::underline)) em_codes[3] = 4;
if (has_emphasis(em, emphasis::blink)) em_codes[4] = 5;
if (has_emphasis(em, emphasis::reverse)) em_codes[5] = 7;
if (has_emphasis(em, emphasis::conceal)) em_codes[6] = 8;
if (has_emphasis(em, emphasis::strikethrough)) em_codes[7] = 9;
size_t index = 0;
for (size_t i = 0; i < num_emphases; ++i) {
if (!em_codes[i]) continue;
buffer[index++] = static_cast<Char>('\x1b');
buffer[index++] = static_cast<Char>('[');
buffer[index++] = static_cast<Char>('0' + em_codes[i]);
buffer[index++] = static_cast<Char>('m');
}
buffer[index++] = static_cast<Char>(0);
}
FMT_CONSTEXPR operator const Char*() const noexcept { return buffer; }
FMT_CONSTEXPR auto begin() const noexcept -> const Char* { return buffer; }
FMT_CONSTEXPR20 auto end() const noexcept -> const Char* {
return buffer + basic_string_view<Char>(buffer).size();
}
private:
static constexpr size_t num_emphases = 8;
Char buffer[7u + 3u * num_emphases + 1u];
static FMT_CONSTEXPR void to_esc(uint8_t c, Char* out,
char delimiter) noexcept {
out[0] = static_cast<Char>('0' + c / 100);
out[1] = static_cast<Char>('0' + c / 10 % 10);
out[2] = static_cast<Char>('0' + c % 10);
out[3] = static_cast<Char>(delimiter);
}
static FMT_CONSTEXPR auto has_emphasis(emphasis em, emphasis mask) noexcept
-> bool {
return static_cast<uint8_t>(em) & static_cast<uint8_t>(mask);
}
};
template <typename Char>
FMT_CONSTEXPR auto make_foreground_color(color_type foreground) noexcept
-> ansi_color_escape<Char> {
return ansi_color_escape<Char>(foreground, "\x1b[38;2;");
}
template <typename Char>
FMT_CONSTEXPR auto make_background_color(color_type background) noexcept
-> ansi_color_escape<Char> {
return ansi_color_escape<Char>(background, "\x1b[48;2;");
}
template <typename Char>
FMT_CONSTEXPR auto make_emphasis(emphasis em) noexcept
-> ansi_color_escape<Char> {
return ansi_color_escape<Char>(em);
}
template <typename Char> inline void reset_color(buffer<Char>& buffer) {
auto reset_color = string_view("\x1b[0m");
buffer.append(reset_color.begin(), reset_color.end());
}
template <typename T> struct styled_arg : view {
const T& value;
text_style style;
styled_arg(const T& v, text_style s) : value(v), style(s) {}
};
template <typename Char>
void vformat_to(buffer<Char>& buf, text_style ts, basic_string_view<Char> fmt,
basic_format_args<buffered_context<Char>> args) {
if (ts.has_emphasis()) {
auto emphasis = make_emphasis<Char>(ts.get_emphasis());
buf.append(emphasis.begin(), emphasis.end());
}
if (ts.has_foreground()) {
auto foreground = make_foreground_color<Char>(ts.get_foreground());
buf.append(foreground.begin(), foreground.end());
}
if (ts.has_background()) {
auto background = make_background_color<Char>(ts.get_background());
buf.append(background.begin(), background.end());
}
vformat_to(buf, fmt, args);
if (ts != text_style()) reset_color<Char>(buf);
}
} // namespace detail
inline void vprint(FILE* f, text_style ts, string_view fmt, format_args args) {
auto buf = memory_buffer();
detail::vformat_to(buf, ts, fmt, args);
print(f, FMT_STRING("{}"), string_view(buf.begin(), buf.size()));
}
/**
* Formats a string and prints it to the specified file stream using ANSI
* escape sequences to specify text formatting.
*
* **Example**:
*
* fmt::print(fmt::emphasis::bold | fg(fmt::color::red),
* "Elapsed time: {0:.2f} seconds", 1.23);
*/
template <typename... T>
void print(FILE* f, text_style ts, format_string<T...> fmt, T&&... args) {
vprint(f, ts, fmt.str, vargs<T...>{{args...}});
}
/**
* Formats a string and prints it to stdout using ANSI escape sequences to
* specify text formatting.
*
* **Example**:
*
* fmt::print(fmt::emphasis::bold | fg(fmt::color::red),
* "Elapsed time: {0:.2f} seconds", 1.23);
*/
template <typename... T>
void print(text_style ts, format_string<T...> fmt, T&&... args) {
return print(stdout, ts, fmt, std::forward<T>(args)...);
}
inline auto vformat(text_style ts, string_view fmt, format_args args)
-> std::string {
auto buf = memory_buffer();
detail::vformat_to(buf, ts, fmt, args);
return fmt::to_string(buf);
}
/**
* Formats arguments and returns the result as a string using ANSI escape
* sequences to specify text formatting.
*
* **Example**:
*
* ```
* #include <fmt/color.h>
* std::string message = fmt::format(fmt::emphasis::bold | fg(fmt::color::red),
* "The answer is {}", 42);
* ```
*/
template <typename... T>
inline auto format(text_style ts, format_string<T...> fmt, T&&... args)
-> std::string {
return fmt::vformat(ts, fmt.str, vargs<T...>{{args...}});
}
/// Formats a string with the given text_style and writes the output to `out`.
template <typename OutputIt,
FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, char>::value)>
auto vformat_to(OutputIt out, text_style ts, string_view fmt, format_args args)
-> OutputIt {
auto&& buf = detail::get_buffer<char>(out);
detail::vformat_to(buf, ts, fmt, args);
return detail::get_iterator(buf, out);
}
/**
* Formats arguments with the given text style, writes the result to the output
* iterator `out` and returns the iterator past the end of the output range.
*
* **Example**:
*
* std::vector<char> out;
* fmt::format_to(std::back_inserter(out),
* fmt::emphasis::bold | fg(fmt::color::red), "{}", 42);
*/
template <typename OutputIt, typename... T,
FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, char>::value)>
inline auto format_to(OutputIt out, text_style ts, format_string<T...> fmt,
T&&... args) -> OutputIt {
return vformat_to(out, ts, fmt.str, vargs<T...>{{args...}});
}
template <typename T, typename Char>
struct formatter<detail::styled_arg<T>, Char> : formatter<T, Char> {
template <typename FormatContext>
auto format(const detail::styled_arg<T>& arg, FormatContext& ctx) const
-> decltype(ctx.out()) {
const auto& ts = arg.style;
auto out = ctx.out();
bool has_style = false;
if (ts.has_emphasis()) {
has_style = true;
auto emphasis = detail::make_emphasis<Char>(ts.get_emphasis());
out = detail::copy<Char>(emphasis.begin(), emphasis.end(), out);
}
if (ts.has_foreground()) {
has_style = true;
auto foreground =
detail::make_foreground_color<Char>(ts.get_foreground());
out = detail::copy<Char>(foreground.begin(), foreground.end(), out);
}
if (ts.has_background()) {
has_style = true;
auto background =
detail::make_background_color<Char>(ts.get_background());
out = detail::copy<Char>(background.begin(), background.end(), out);
}
out = formatter<T, Char>::format(arg.value, ctx);
if (has_style) {
auto reset_color = string_view("\x1b[0m");
out = detail::copy<Char>(reset_color.begin(), reset_color.end(), out);
}
return out;
}
};
/**
* Returns an argument that will be formatted using ANSI escape sequences,
* to be used in a formatting function.
*
* **Example**:
*
* fmt::print("Elapsed time: {0:.2f} seconds",
* fmt::styled(1.23, fmt::fg(fmt::color::green) |
* fmt::bg(fmt::color::blue)));
*/
template <typename T>
FMT_CONSTEXPR auto styled(const T& value, text_style ts)
-> detail::styled_arg<remove_cvref_t<T>> {
return detail::styled_arg<remove_cvref_t<T>>{value, ts};
}
FMT_END_EXPORT
FMT_END_NAMESPACE
#endif // FMT_COLOR_H_
third_party/fmt/include/fmt/compile.h
Vendored
-539
View File
@@ -1,539 +0,0 @@
// Formatting library for C++ - experimental format string compilation
//
// Copyright (c) 2012 - present, Victor Zverovich and fmt contributors
// All rights reserved.
//
// For the license information refer to format.h.
#ifndef FMT_COMPILE_H_
#define FMT_COMPILE_H_
#ifndef FMT_MODULE
# include <iterator> // std::back_inserter
#endif
#include "format.h"
FMT_BEGIN_NAMESPACE
// A compile-time string which is compiled into fast formatting code.
FMT_EXPORT class compiled_string {};
template <typename S>
struct is_compiled_string : std::is_base_of<compiled_string, S> {};
namespace detail {
/**
* Converts a string literal `s` into a format string that will be parsed at
* compile time and converted into efficient formatting code. Requires C++17
* `constexpr if` compiler support.
*
* **Example**:
*
* // Converts 42 into std::string using the most efficient method and no
* // runtime format string processing.
* std::string s = fmt::format(FMT_COMPILE("{}"), 42);
*/
#if defined(__cpp_if_constexpr) && defined(__cpp_return_type_deduction)
# define FMT_COMPILE(s) FMT_STRING_IMPL(s, fmt::compiled_string)
#else
# define FMT_COMPILE(s) FMT_STRING(s)
#endif
template <typename T, typename... Tail>
auto first(const T& value, const Tail&...) -> const T& {
return value;
}
#if defined(__cpp_if_constexpr) && defined(__cpp_return_type_deduction)
template <typename... Args> struct type_list {};
// Returns a reference to the argument at index N from [first, rest...].
template <int N, typename T, typename... Args>
constexpr const auto& get([[maybe_unused]] const T& first,
[[maybe_unused]] const Args&... rest) {
static_assert(N < 1 + sizeof...(Args), "index is out of bounds");
if constexpr (N == 0)
return first;
else
return detail::get<N - 1>(rest...);
}
# if FMT_USE_NONTYPE_TEMPLATE_ARGS
template <int N, typename T, typename... Args, typename Char>
constexpr auto get_arg_index_by_name(basic_string_view<Char> name) -> int {
if constexpr (is_static_named_arg<T>()) {
if (name == T::name) return N;
}
if constexpr (sizeof...(Args) > 0)
return get_arg_index_by_name<N + 1, Args...>(name);
(void)name; // Workaround an MSVC bug about "unused" parameter.
return -1;
}
# endif
template <typename... Args, typename Char>
FMT_CONSTEXPR auto get_arg_index_by_name(basic_string_view<Char> name) -> int {
# if FMT_USE_NONTYPE_TEMPLATE_ARGS
if constexpr (sizeof...(Args) > 0)
return get_arg_index_by_name<0, Args...>(name);
# endif
(void)name;
return -1;
}
template <typename Char, typename... Args>
constexpr int get_arg_index_by_name(basic_string_view<Char> name,
type_list<Args...>) {
return get_arg_index_by_name<Args...>(name);
}
template <int N, typename> struct get_type_impl;
template <int N, typename... Args> struct get_type_impl<N, type_list<Args...>> {
using type =
remove_cvref_t<decltype(detail::get<N>(std::declval<Args>()...))>;
};
template <int N, typename T>
using get_type = typename get_type_impl<N, T>::type;
template <typename T> struct is_compiled_format : std::false_type {};
template <typename Char> struct text {
basic_string_view<Char> data;
using char_type = Char;
template <typename OutputIt, typename... Args>
constexpr OutputIt format(OutputIt out, const Args&...) const {
return write<Char>(out, data);
}
};
template <typename Char>
struct is_compiled_format<text<Char>> : std::true_type {};
template <typename Char>
constexpr text<Char> make_text(basic_string_view<Char> s, size_t pos,
size_t size) {
return {{&s[pos], size}};
}
template <typename Char> struct code_unit {
Char value;
using char_type = Char;
template <typename OutputIt, typename... Args>
constexpr OutputIt format(OutputIt out, const Args&...) const {
*out++ = value;
return out;
}
};
// This ensures that the argument type is convertible to `const T&`.
template <typename T, int N, typename... Args>
constexpr const T& get_arg_checked(const Args&... args) {
const auto& arg = detail::get<N>(args...);
if constexpr (detail::is_named_arg<remove_cvref_t<decltype(arg)>>()) {
return arg.value;
} else {
return arg;
}
}
template <typename Char>
struct is_compiled_format<code_unit<Char>> : std::true_type {};
// A replacement field that refers to argument N.
template <typename Char, typename T, int N> struct field {
using char_type = Char;
template <typename OutputIt, typename... Args>
constexpr OutputIt format(OutputIt out, const Args&... args) const {
const T& arg = get_arg_checked<T, N>(args...);
if constexpr (std::is_convertible<T, basic_string_view<Char>>::value) {
auto s = basic_string_view<Char>(arg);
return copy<Char>(s.begin(), s.end(), out);
} else {
return write<Char>(out, arg);
}
}
};
template <typename Char, typename T, int N>
struct is_compiled_format<field<Char, T, N>> : std::true_type {};
// A replacement field that refers to argument with name.
template <typename Char> struct runtime_named_field {
using char_type = Char;
basic_string_view<Char> name;
template <typename OutputIt, typename T>
constexpr static bool try_format_argument(
OutputIt& out,
// [[maybe_unused]] due to unused-but-set-parameter warning in GCC 7,8,9
[[maybe_unused]] basic_string_view<Char> arg_name, const T& arg) {
if constexpr (is_named_arg<typename std::remove_cv<T>::type>::value) {
if (arg_name == arg.name) {
out = write<Char>(out, arg.value);
return true;
}
}
return false;
}
template <typename OutputIt, typename... Args>
constexpr OutputIt format(OutputIt out, const Args&... args) const {
bool found = (try_format_argument(out, name, args) || ...);
if (!found) {
FMT_THROW(format_error("argument with specified name is not found"));
}
return out;
}
};
template <typename Char>
struct is_compiled_format<runtime_named_field<Char>> : std::true_type {};
// A replacement field that refers to argument N and has format specifiers.
template <typename Char, typename T, int N> struct spec_field {
using char_type = Char;
formatter<T, Char> fmt;
template <typename OutputIt, typename... Args>
constexpr FMT_INLINE OutputIt format(OutputIt out,
const Args&... args) const {
const auto& vargs =
fmt::make_format_args<basic_format_context<OutputIt, Char>>(args...);
basic_format_context<OutputIt, Char> ctx(out, vargs);
return fmt.format(get_arg_checked<T, N>(args...), ctx);
}
};
template <typename Char, typename T, int N>
struct is_compiled_format<spec_field<Char, T, N>> : std::true_type {};
template <typename L, typename R> struct concat {
L lhs;
R rhs;
using char_type = typename L::char_type;
template <typename OutputIt, typename... Args>
constexpr OutputIt format(OutputIt out, const Args&... args) const {
out = lhs.format(out, args...);
return rhs.format(out, args...);
}
};
template <typename L, typename R>
struct is_compiled_format<concat<L, R>> : std::true_type {};
template <typename L, typename R>
constexpr concat<L, R> make_concat(L lhs, R rhs) {
return {lhs, rhs};
}
struct unknown_format {};
template <typename Char>
constexpr size_t parse_text(basic_string_view<Char> str, size_t pos) {
for (size_t size = str.size(); pos != size; ++pos) {
if (str[pos] == '{' || str[pos] == '}') break;
}
return pos;
}
template <typename Args, size_t POS, int ID, typename S>
constexpr auto compile_format_string(S fmt);
template <typename Args, size_t POS, int ID, typename T, typename S>
constexpr auto parse_tail(T head, S fmt) {
if constexpr (POS != basic_string_view<typename S::char_type>(fmt).size()) {
constexpr auto tail = compile_format_string<Args, POS, ID>(fmt);
if constexpr (std::is_same<remove_cvref_t<decltype(tail)>,
unknown_format>())
return tail;
else
return make_concat(head, tail);
} else {
return head;
}
}
template <typename T, typename Char> struct parse_specs_result {
formatter<T, Char> fmt;
size_t end;
int next_arg_id;
};
enum { manual_indexing_id = -1 };
template <typename T, typename Char>
constexpr parse_specs_result<T, Char> parse_specs(basic_string_view<Char> str,
size_t pos, int next_arg_id) {
str.remove_prefix(pos);
auto ctx =
compile_parse_context<Char>(str, max_value<int>(), nullptr, next_arg_id);
auto f = formatter<T, Char>();
auto end = f.parse(ctx);
return {f, pos + fmt::detail::to_unsigned(end - str.data()),
next_arg_id == 0 ? manual_indexing_id : ctx.next_arg_id()};
}
template <typename Char> struct arg_id_handler {
arg_id_kind kind;
arg_ref<Char> arg_id;
constexpr int on_auto() {
FMT_ASSERT(false, "handler cannot be used with automatic indexing");
return 0;
}
constexpr int on_index(int id) {
kind = arg_id_kind::index;
arg_id = arg_ref<Char>(id);
return 0;
}
constexpr int on_name(basic_string_view<Char> id) {
kind = arg_id_kind::name;
arg_id = arg_ref<Char>(id);
return 0;
}
};
template <typename Char> struct parse_arg_id_result {
arg_id_kind kind;
arg_ref<Char> arg_id;
const Char* arg_id_end;
};
template <int ID, typename Char>
constexpr auto parse_arg_id(const Char* begin, const Char* end) {
auto handler = arg_id_handler<Char>{arg_id_kind::none, arg_ref<Char>{}};
auto arg_id_end = parse_arg_id(begin, end, handler);
return parse_arg_id_result<Char>{handler.kind, handler.arg_id, arg_id_end};
}
template <typename T, typename Enable = void> struct field_type {
using type = remove_cvref_t<T>;
};
template <typename T>
struct field_type<T, enable_if_t<detail::is_named_arg<T>::value>> {
using type = remove_cvref_t<decltype(T::value)>;
};
template <typename T, typename Args, size_t END_POS, int ARG_INDEX, int NEXT_ID,
typename S>
constexpr auto parse_replacement_field_then_tail(S fmt) {
using char_type = typename S::char_type;
constexpr auto str = basic_string_view<char_type>(fmt);
constexpr char_type c = END_POS != str.size() ? str[END_POS] : char_type();
if constexpr (c == '}') {
return parse_tail<Args, END_POS + 1, NEXT_ID>(
field<char_type, typename field_type<T>::type, ARG_INDEX>(), fmt);
} else if constexpr (c != ':') {
FMT_THROW(format_error("expected ':'"));
} else {
constexpr auto result = parse_specs<typename field_type<T>::type>(
str, END_POS + 1, NEXT_ID == manual_indexing_id ? 0 : NEXT_ID);
if constexpr (result.end >= str.size() || str[result.end] != '}') {
FMT_THROW(format_error("expected '}'"));
return 0;
} else {
return parse_tail<Args, result.end + 1, result.next_arg_id>(
spec_field<char_type, typename field_type<T>::type, ARG_INDEX>{
result.fmt},
fmt);
}
}
}
// Compiles a non-empty format string and returns the compiled representation
// or unknown_format() on unrecognized input.
template <typename Args, size_t POS, int ID, typename S>
constexpr auto compile_format_string(S fmt) {
using char_type = typename S::char_type;
constexpr auto str = basic_string_view<char_type>(fmt);
if constexpr (str[POS] == '{') {
if constexpr (POS + 1 == str.size())
FMT_THROW(format_error("unmatched '{' in format string"));
if constexpr (str[POS + 1] == '{') {
return parse_tail<Args, POS + 2, ID>(make_text(str, POS, 1), fmt);
} else if constexpr (str[POS + 1] == '}' || str[POS + 1] == ':') {
static_assert(ID != manual_indexing_id,
"cannot switch from manual to automatic argument indexing");
constexpr auto next_id =
ID != manual_indexing_id ? ID + 1 : manual_indexing_id;
return parse_replacement_field_then_tail<get_type<ID, Args>, Args,
POS + 1, ID, next_id>(fmt);
} else {
constexpr auto arg_id_result =
parse_arg_id<ID>(str.data() + POS + 1, str.data() + str.size());
constexpr auto arg_id_end_pos = arg_id_result.arg_id_end - str.data();
constexpr char_type c =
arg_id_end_pos != str.size() ? str[arg_id_end_pos] : char_type();
static_assert(c == '}' || c == ':', "missing '}' in format string");
if constexpr (arg_id_result.kind == arg_id_kind::index) {
static_assert(
ID == manual_indexing_id || ID == 0,
"cannot switch from automatic to manual argument indexing");
constexpr auto arg_index = arg_id_result.arg_id.index;
return parse_replacement_field_then_tail<get_type<arg_index, Args>,
Args, arg_id_end_pos,
arg_index, manual_indexing_id>(
fmt);
} else if constexpr (arg_id_result.kind == arg_id_kind::name) {
constexpr auto arg_index =
get_arg_index_by_name(arg_id_result.arg_id.name, Args{});
if constexpr (arg_index >= 0) {
constexpr auto next_id =
ID != manual_indexing_id ? ID + 1 : manual_indexing_id;
return parse_replacement_field_then_tail<
decltype(get_type<arg_index, Args>::value), Args, arg_id_end_pos,
arg_index, next_id>(fmt);
} else if constexpr (c == '}') {
return parse_tail<Args, arg_id_end_pos + 1, ID>(
runtime_named_field<char_type>{arg_id_result.arg_id.name}, fmt);
} else if constexpr (c == ':') {
return unknown_format(); // no type info for specs parsing
}
}
}
} else if constexpr (str[POS] == '}') {
if constexpr (POS + 1 == str.size())
FMT_THROW(format_error("unmatched '}' in format string"));
return parse_tail<Args, POS + 2, ID>(make_text(str, POS, 1), fmt);
} else {
constexpr auto end = parse_text(str, POS + 1);
if constexpr (end - POS > 1) {
return parse_tail<Args, end, ID>(make_text(str, POS, end - POS), fmt);
} else {
return parse_tail<Args, end, ID>(code_unit<char_type>{str[POS]}, fmt);
}
}
}
template <typename... Args, typename S,
FMT_ENABLE_IF(is_compiled_string<S>::value)>
constexpr auto compile(S fmt) {
constexpr auto str = basic_string_view<typename S::char_type>(fmt);
if constexpr (str.size() == 0) {
return detail::make_text(str, 0, 0);
} else {
constexpr auto result =
detail::compile_format_string<detail::type_list<Args...>, 0, 0>(fmt);
return result;
}
}
#endif // defined(__cpp_if_constexpr) && defined(__cpp_return_type_deduction)
} // namespace detail
FMT_BEGIN_EXPORT
#if defined(__cpp_if_constexpr) && defined(__cpp_return_type_deduction)
template <typename CompiledFormat, typename... Args,
typename Char = typename CompiledFormat::char_type,
FMT_ENABLE_IF(detail::is_compiled_format<CompiledFormat>::value)>
FMT_INLINE std::basic_string<Char> format(const CompiledFormat& cf,
const Args&... args) {
auto s = std::basic_string<Char>();
cf.format(std::back_inserter(s), args...);
return s;
}
template <typename OutputIt, typename CompiledFormat, typename... Args,
FMT_ENABLE_IF(detail::is_compiled_format<CompiledFormat>::value)>
constexpr FMT_INLINE OutputIt format_to(OutputIt out, const CompiledFormat& cf,
const Args&... args) {
return cf.format(out, args...);
}
template <typename S, typename... Args,
FMT_ENABLE_IF(is_compiled_string<S>::value)>
FMT_INLINE std::basic_string<typename S::char_type> format(const S&,
Args&&... args) {
if constexpr (std::is_same<typename S::char_type, char>::value) {
constexpr auto str = basic_string_view<typename S::char_type>(S());
if constexpr (str.size() == 2 && str[0] == '{' && str[1] == '}') {
const auto& first = detail::first(args...);
if constexpr (detail::is_named_arg<
remove_cvref_t<decltype(first)>>::value) {
return fmt::to_string(first.value);
} else {
return fmt::to_string(first);
}
}
}
constexpr auto compiled = detail::compile<Args...>(S());
if constexpr (std::is_same<remove_cvref_t<decltype(compiled)>,
detail::unknown_format>()) {
return fmt::format(
static_cast<basic_string_view<typename S::char_type>>(S()),
std::forward<Args>(args)...);
} else {
return fmt::format(compiled, std::forward<Args>(args)...);
}
}
template <typename OutputIt, typename S, typename... Args,
FMT_ENABLE_IF(is_compiled_string<S>::value)>
FMT_CONSTEXPR OutputIt format_to(OutputIt out, const S&, Args&&... args) {
constexpr auto compiled = detail::compile<Args...>(S());
if constexpr (std::is_same<remove_cvref_t<decltype(compiled)>,
detail::unknown_format>()) {
return fmt::format_to(
out, static_cast<basic_string_view<typename S::char_type>>(S()),
std::forward<Args>(args)...);
} else {
return fmt::format_to(out, compiled, std::forward<Args>(args)...);
}
}
#endif
template <typename OutputIt, typename S, typename... Args,
FMT_ENABLE_IF(is_compiled_string<S>::value)>
auto format_to_n(OutputIt out, size_t n, const S& fmt, Args&&... args)
-> format_to_n_result<OutputIt> {
using traits = detail::fixed_buffer_traits;
auto buf = detail::iterator_buffer<OutputIt, char, traits>(out, n);
fmt::format_to(std::back_inserter(buf), fmt, std::forward<Args>(args)...);
return {buf.out(), buf.count()};
}
template <typename S, typename... Args,
FMT_ENABLE_IF(is_compiled_string<S>::value)>
FMT_CONSTEXPR20 auto formatted_size(const S& fmt, const Args&... args)
-> size_t {
auto buf = detail::counting_buffer<>();
fmt::format_to(appender(buf), fmt, args...);
return buf.count();
}
template <typename S, typename... Args,
FMT_ENABLE_IF(is_compiled_string<S>::value)>
void print(std::FILE* f, const S& fmt, const Args&... args) {
auto buf = memory_buffer();
fmt::format_to(appender(buf), fmt, args...);
detail::print(f, {buf.data(), buf.size()});
}
template <typename S, typename... Args,
FMT_ENABLE_IF(is_compiled_string<S>::value)>
void print(const S& fmt, const Args&... args) {
print(stdout, fmt, args...);
}
#if FMT_USE_NONTYPE_TEMPLATE_ARGS
inline namespace literals {
template <detail::fixed_string Str> constexpr auto operator""_cf() {
return FMT_COMPILE(Str.data);
}
} // namespace literals
#endif
FMT_END_EXPORT
FMT_END_NAMESPACE
#endif // FMT_COMPILE_H_
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// This file is only provided for compatibility and may be removed in future
// versions. Use fmt/base.h if you don't need fmt::format and fmt/format.h
// otherwise.
#include "format.h"
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// Formatting library for C++ - optional OS-specific functionality
//
// Copyright (c) 2012 - present, Victor Zverovich
// All rights reserved.
//
// For the license information refer to format.h.
#ifndef FMT_OS_H_
#define FMT_OS_H_
#include "format.h"
#ifndef FMT_MODULE
# include <cerrno>
# include <cstddef>
# include <cstdio>
# include <system_error> // std::system_error
# if FMT_HAS_INCLUDE(<xlocale.h>)
# include <xlocale.h> // LC_NUMERIC_MASK on macOS
# endif
#endif // FMT_MODULE
#ifndef FMT_USE_FCNTL
// UWP doesn't provide _pipe.
# if FMT_HAS_INCLUDE("winapifamily.h")
# include <winapifamily.h>
# endif
# if (FMT_HAS_INCLUDE(<fcntl.h>) || defined(__APPLE__) || \
defined(__linux__)) && \
(!defined(WINAPI_FAMILY) || \
(WINAPI_FAMILY == WINAPI_FAMILY_DESKTOP_APP))
# include <fcntl.h> // for O_RDONLY
# define FMT_USE_FCNTL 1
# else
# define FMT_USE_FCNTL 0
# endif
#endif
#ifndef FMT_POSIX
# if defined(_WIN32) && !defined(__MINGW32__)
// Fix warnings about deprecated symbols.
# define FMT_POSIX(call) _##call
# else
# define FMT_POSIX(call) call
# endif
#endif
// Calls to system functions are wrapped in FMT_SYSTEM for testability.
#ifdef FMT_SYSTEM
# define FMT_HAS_SYSTEM
# define FMT_POSIX_CALL(call) FMT_SYSTEM(call)
#else
# define FMT_SYSTEM(call) ::call
# ifdef _WIN32
// Fix warnings about deprecated symbols.
# define FMT_POSIX_CALL(call) ::_##call
# else
# define FMT_POSIX_CALL(call) ::call
# endif
#endif
// Retries the expression while it evaluates to error_result and errno
// equals to EINTR.
#ifndef _WIN32
# define FMT_RETRY_VAL(result, expression, error_result) \
do { \
(result) = (expression); \
} while ((result) == (error_result) && errno == EINTR)
#else
# define FMT_RETRY_VAL(result, expression, error_result) result = (expression)
#endif
#define FMT_RETRY(result, expression) FMT_RETRY_VAL(result, expression, -1)
FMT_BEGIN_NAMESPACE
FMT_BEGIN_EXPORT
/**
* A reference to a null-terminated string. It can be constructed from a C
* string or `std::string`.
*
* You can use one of the following type aliases for common character types:
*
* +---------------+-----------------------------+
* | Type | Definition |
* +===============+=============================+
* | cstring_view | basic_cstring_view<char> |
* +---------------+-----------------------------+
* | wcstring_view | basic_cstring_view<wchar_t> |
* +---------------+-----------------------------+
*
* This class is most useful as a parameter type for functions that wrap C APIs.
*/
template <typename Char> class basic_cstring_view {
private:
const Char* data_;
public:
/// Constructs a string reference object from a C string.
basic_cstring_view(const Char* s) : data_(s) {}
/// Constructs a string reference from an `std::string` object.
basic_cstring_view(const std::basic_string<Char>& s) : data_(s.c_str()) {}
/// Returns the pointer to a C string.
auto c_str() const -> const Char* { return data_; }
};
using cstring_view = basic_cstring_view<char>;
using wcstring_view = basic_cstring_view<wchar_t>;
#ifdef _WIN32
FMT_API const std::error_category& system_category() noexcept;
namespace detail {
FMT_API void format_windows_error(buffer<char>& out, int error_code,
const char* message) noexcept;
}
FMT_API std::system_error vwindows_error(int error_code, string_view fmt,
format_args args);
/**
* Constructs a `std::system_error` object with the description of the form
*
* <message>: <system-message>
*
* where `<message>` is the formatted message and `<system-message>` is the
* system message corresponding to the error code.
* `error_code` is a Windows error code as given by `GetLastError`.
* If `error_code` is not a valid error code such as -1, the system message
* will look like "error -1".
*
* **Example**:
*
* // This throws a system_error with the description
* // cannot open file 'madeup': The system cannot find the file
* specified.
* // or similar (system message may vary).
* const char *filename = "madeup";
* LPOFSTRUCT of = LPOFSTRUCT();
* HFILE file = OpenFile(filename, &of, OF_READ);
* if (file == HFILE_ERROR) {
* throw fmt::windows_error(GetLastError(),
* "cannot open file '{}'", filename);
* }
*/
template <typename... T>
auto windows_error(int error_code, string_view message, const T&... args)
-> std::system_error {
return vwindows_error(error_code, message, vargs<T...>{{args...}});
}
// Reports a Windows error without throwing an exception.
// Can be used to report errors from destructors.
FMT_API void report_windows_error(int error_code, const char* message) noexcept;
#else
inline auto system_category() noexcept -> const std::error_category& {
return std::system_category();
}
#endif // _WIN32
// std::system is not available on some platforms such as iOS (#2248).
#ifdef __OSX__
template <typename S, typename... Args, typename Char = char_t<S>>
void say(const S& fmt, Args&&... args) {
std::system(format("say \"{}\"", format(fmt, args...)).c_str());
}
#endif
// A buffered file.
class buffered_file {
private:
FILE* file_;
friend class file;
inline explicit buffered_file(FILE* f) : file_(f) {}
public:
buffered_file(const buffered_file&) = delete;
void operator=(const buffered_file&) = delete;
// Constructs a buffered_file object which doesn't represent any file.
inline buffered_file() noexcept : file_(nullptr) {}
// Destroys the object closing the file it represents if any.
FMT_API ~buffered_file() noexcept;
public:
inline buffered_file(buffered_file&& other) noexcept : file_(other.file_) {
other.file_ = nullptr;
}
inline auto operator=(buffered_file&& other) -> buffered_file& {
close();
file_ = other.file_;
other.file_ = nullptr;
return *this;
}
// Opens a file.
FMT_API buffered_file(cstring_view filename, cstring_view mode);
// Closes the file.
FMT_API void close();
// Returns the pointer to a FILE object representing this file.
inline auto get() const noexcept -> FILE* { return file_; }
FMT_API auto descriptor() const -> int;
template <typename... T>
inline void print(string_view fmt, const T&... args) {
fmt::vargs<T...> vargs = {{args...}};
detail::is_locking<T...>() ? fmt::vprint_buffered(file_, fmt, vargs)
: fmt::vprint(file_, fmt, vargs);
}
};
#if FMT_USE_FCNTL
// A file. Closed file is represented by a file object with descriptor -1.
// Methods that are not declared with noexcept may throw
// fmt::system_error in case of failure. Note that some errors such as
// closing the file multiple times will cause a crash on Windows rather
// than an exception. You can get standard behavior by overriding the
// invalid parameter handler with _set_invalid_parameter_handler.
class FMT_API file {
private:
int fd_; // File descriptor.
// Constructs a file object with a given descriptor.
explicit file(int fd) : fd_(fd) {}
friend struct pipe;
public:
// Possible values for the oflag argument to the constructor.
enum {
RDONLY = FMT_POSIX(O_RDONLY), // Open for reading only.
WRONLY = FMT_POSIX(O_WRONLY), // Open for writing only.
RDWR = FMT_POSIX(O_RDWR), // Open for reading and writing.
CREATE = FMT_POSIX(O_CREAT), // Create if the file doesn't exist.
APPEND = FMT_POSIX(O_APPEND), // Open in append mode.
TRUNC = FMT_POSIX(O_TRUNC) // Truncate the content of the file.
};
// Constructs a file object which doesn't represent any file.
inline file() noexcept : fd_(-1) {}
// Opens a file and constructs a file object representing this file.
file(cstring_view path, int oflag);
public:
file(const file&) = delete;
void operator=(const file&) = delete;
inline file(file&& other) noexcept : fd_(other.fd_) { other.fd_ = -1; }
// Move assignment is not noexcept because close may throw.
inline auto operator=(file&& other) -> file& {
close();
fd_ = other.fd_;
other.fd_ = -1;
return *this;
}
// Destroys the object closing the file it represents if any.
~file() noexcept;
// Returns the file descriptor.
inline auto descriptor() const noexcept -> int { return fd_; }
// Closes the file.
void close();
// Returns the file size. The size has signed type for consistency with
// stat::st_size.
auto size() const -> long long;
// Attempts to read count bytes from the file into the specified buffer.
auto read(void* buffer, size_t count) -> size_t;
// Attempts to write count bytes from the specified buffer to the file.
auto write(const void* buffer, size_t count) -> size_t;
// Duplicates a file descriptor with the dup function and returns
// the duplicate as a file object.
static auto dup(int fd) -> file;
// Makes fd be the copy of this file descriptor, closing fd first if
// necessary.
void dup2(int fd);
// Makes fd be the copy of this file descriptor, closing fd first if
// necessary.
void dup2(int fd, std::error_code& ec) noexcept;
// Creates a buffered_file object associated with this file and detaches
// this file object from the file.
auto fdopen(const char* mode) -> buffered_file;
# if defined(_WIN32) && !defined(__MINGW32__)
// Opens a file and constructs a file object representing this file by
// wcstring_view filename. Windows only.
static file open_windows_file(wcstring_view path, int oflag);
# endif
};
struct FMT_API pipe {
file read_end;
file write_end;
// Creates a pipe setting up read_end and write_end file objects for reading
// and writing respectively.
pipe();
};
// Returns the memory page size.
auto getpagesize() -> long;
namespace detail {
struct buffer_size {
constexpr buffer_size() = default;
size_t value = 0;
FMT_CONSTEXPR auto operator=(size_t val) const -> buffer_size {
auto bs = buffer_size();
bs.value = val;
return bs;
}
};
struct ostream_params {
int oflag = file::WRONLY | file::CREATE | file::TRUNC;
size_t buffer_size = BUFSIZ > 32768 ? BUFSIZ : 32768;
constexpr ostream_params() {}
template <typename... T>
ostream_params(T... params, int new_oflag) : ostream_params(params...) {
oflag = new_oflag;
}
template <typename... T>
ostream_params(T... params, detail::buffer_size bs)
: ostream_params(params...) {
this->buffer_size = bs.value;
}
// Intel has a bug that results in failure to deduce a constructor
// for empty parameter packs.
# if defined(__INTEL_COMPILER) && __INTEL_COMPILER < 2000
ostream_params(int new_oflag) : oflag(new_oflag) {}
ostream_params(detail::buffer_size bs) : buffer_size(bs.value) {}
# endif
};
} // namespace detail
FMT_INLINE_VARIABLE constexpr auto buffer_size = detail::buffer_size();
/// A fast buffered output stream for writing from a single thread. Writing from
/// multiple threads without external synchronization may result in a data race.
class FMT_API ostream : private detail::buffer<char> {
private:
file file_;
ostream(cstring_view path, const detail::ostream_params& params);
static void grow(buffer<char>& buf, size_t);
public:
ostream(ostream&& other) noexcept;
~ostream();
operator writer() {
detail::buffer<char>& buf = *this;
return buf;
}
inline void flush() {
if (size() == 0) return;
file_.write(data(), size() * sizeof(data()[0]));
clear();
}
template <typename... T>
friend auto output_file(cstring_view path, T... params) -> ostream;
inline void close() {
flush();
file_.close();
}
/// Formats `args` according to specifications in `fmt` and writes the
/// output to the file.
template <typename... T> void print(format_string<T...> fmt, T&&... args) {
vformat_to(appender(*this), fmt.str, vargs<T...>{{args...}});
}
};
/**
* Opens a file for writing. Supported parameters passed in `params`:
*
* - `<integer>`: Flags passed to [open](
* https://pubs.opengroup.org/onlinepubs/007904875/functions/open.html)
* (`file::WRONLY | file::CREATE | file::TRUNC` by default)
* - `buffer_size=<integer>`: Output buffer size
*
* **Example**:
*
* auto out = fmt::output_file("guide.txt");
* out.print("Don't {}", "Panic");
*/
template <typename... T>
inline auto output_file(cstring_view path, T... params) -> ostream {
return {path, detail::ostream_params(params...)};
}
#endif // FMT_USE_FCNTL
FMT_END_EXPORT
FMT_END_NAMESPACE
#endif // FMT_OS_H_
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// Formatting library for C++ - std::ostream support
//
// Copyright (c) 2012 - present, Victor Zverovich
// All rights reserved.
//
// For the license information refer to format.h.
#ifndef FMT_OSTREAM_H_
#define FMT_OSTREAM_H_
#ifndef FMT_MODULE
# include <fstream> // std::filebuf
#endif
#ifdef _WIN32
# ifdef __GLIBCXX__
# include <ext/stdio_filebuf.h>
# include <ext/stdio_sync_filebuf.h>
# endif
# include <io.h>
#endif
#include "chrono.h" // formatbuf
#ifdef _MSVC_STL_UPDATE
# define FMT_MSVC_STL_UPDATE _MSVC_STL_UPDATE
#elif defined(_MSC_VER) && _MSC_VER < 1912 // VS 15.5
# define FMT_MSVC_STL_UPDATE _MSVC_LANG
#else
# define FMT_MSVC_STL_UPDATE 0
#endif
FMT_BEGIN_NAMESPACE
namespace detail {
// Generate a unique explicit instantion in every translation unit using a tag
// type in an anonymous namespace.
namespace {
struct file_access_tag {};
} // namespace
template <typename Tag, typename BufType, FILE* BufType::*FileMemberPtr>
class file_access {
friend auto get_file(BufType& obj) -> FILE* { return obj.*FileMemberPtr; }
};
#if FMT_MSVC_STL_UPDATE
template class file_access<file_access_tag, std::filebuf,
&std::filebuf::_Myfile>;
auto get_file(std::filebuf&) -> FILE*;
#endif
// Write the content of buf to os.
// It is a separate function rather than a part of vprint to simplify testing.
template <typename Char>
void write_buffer(std::basic_ostream<Char>& os, buffer<Char>& buf) {
const Char* buf_data = buf.data();
using unsigned_streamsize = make_unsigned_t<std::streamsize>;
unsigned_streamsize size = buf.size();
unsigned_streamsize max_size = to_unsigned(max_value<std::streamsize>());
do {
unsigned_streamsize n = size <= max_size ? size : max_size;
os.write(buf_data, static_cast<std::streamsize>(n));
buf_data += n;
size -= n;
} while (size != 0);
}
template <typename T> struct streamed_view {
const T& value;
};
} // namespace detail
// Formats an object of type T that has an overloaded ostream operator<<.
template <typename Char>
struct basic_ostream_formatter : formatter<basic_string_view<Char>, Char> {
void set_debug_format() = delete;
template <typename T, typename Context>
auto format(const T& value, Context& ctx) const -> decltype(ctx.out()) {
auto buffer = basic_memory_buffer<Char>();
auto&& formatbuf = detail::formatbuf<std::basic_streambuf<Char>>(buffer);
auto&& output = std::basic_ostream<Char>(&formatbuf);
output.imbue(std::locale::classic()); // The default is always unlocalized.
output << value;
output.exceptions(std::ios_base::failbit | std::ios_base::badbit);
return formatter<basic_string_view<Char>, Char>::format(
{buffer.data(), buffer.size()}, ctx);
}
};
using ostream_formatter = basic_ostream_formatter<char>;
template <typename T, typename Char>
struct formatter<detail::streamed_view<T>, Char>
: basic_ostream_formatter<Char> {
template <typename Context>
auto format(detail::streamed_view<T> view, Context& ctx) const
-> decltype(ctx.out()) {
return basic_ostream_formatter<Char>::format(view.value, ctx);
}
};
/**
* Returns a view that formats `value` via an ostream `operator<<`.
*
* **Example**:
*
* fmt::print("Current thread id: {}\n",
* fmt::streamed(std::this_thread::get_id()));
*/
template <typename T>
constexpr auto streamed(const T& value) -> detail::streamed_view<T> {
return {value};
}
inline void vprint(std::ostream& os, string_view fmt, format_args args) {
auto buffer = memory_buffer();
detail::vformat_to(buffer, fmt, args);
FILE* f = nullptr;
#if FMT_MSVC_STL_UPDATE && FMT_USE_RTTI
if (auto* buf = dynamic_cast<std::filebuf*>(os.rdbuf()))
f = detail::get_file(*buf);
#elif defined(_WIN32) && defined(__GLIBCXX__) && FMT_USE_RTTI
auto* rdbuf = os.rdbuf();
if (auto* sfbuf = dynamic_cast<__gnu_cxx::stdio_sync_filebuf<char>*>(rdbuf))
f = sfbuf->file();
else if (auto* fbuf = dynamic_cast<__gnu_cxx::stdio_filebuf<char>*>(rdbuf))
f = fbuf->file();
#endif
#ifdef _WIN32
if (f) {
int fd = _fileno(f);
if (_isatty(fd)) {
os.flush();
if (detail::write_console(fd, {buffer.data(), buffer.size()})) return;
}
}
#endif
detail::ignore_unused(f);
detail::write_buffer(os, buffer);
}
/**
* Prints formatted data to the stream `os`.
*
* **Example**:
*
* fmt::print(cerr, "Don't {}!", "panic");
*/
FMT_EXPORT template <typename... T>
void print(std::ostream& os, format_string<T...> fmt, T&&... args) {
fmt::vargs<T...> vargs = {{args...}};
if (detail::const_check(detail::use_utf8)) return vprint(os, fmt.str, vargs);
auto buffer = memory_buffer();
detail::vformat_to(buffer, fmt.str, vargs);
detail::write_buffer(os, buffer);
}
FMT_EXPORT template <typename... T>
void println(std::ostream& os, format_string<T...> fmt, T&&... args) {
fmt::print(os, FMT_STRING("{}\n"),
fmt::format(fmt, std::forward<T>(args)...));
}
FMT_END_NAMESPACE
#endif // FMT_OSTREAM_H_
third_party/fmt/include/fmt/printf.h
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// Formatting library for C++ - legacy printf implementation
//
// Copyright (c) 2012 - 2016, Victor Zverovich
// All rights reserved.
//
// For the license information refer to format.h.
#ifndef FMT_PRINTF_H_
#define FMT_PRINTF_H_
#ifndef FMT_MODULE
# include <algorithm> // std::max
# include <limits> // std::numeric_limits
#endif
#include "format.h"
FMT_BEGIN_NAMESPACE
FMT_BEGIN_EXPORT
template <typename T> struct printf_formatter {
printf_formatter() = delete;
};
template <typename Char> class basic_printf_context {
private:
basic_appender<Char> out_;
basic_format_args<basic_printf_context> args_;
static_assert(std::is_same<Char, char>::value ||
std::is_same<Char, wchar_t>::value,
"Unsupported code unit type.");
public:
using char_type = Char;
using parse_context_type = parse_context<Char>;
template <typename T> using formatter_type = printf_formatter<T>;
enum { builtin_types = 1 };
/// Constructs a `printf_context` object. References to the arguments are
/// stored in the context object so make sure they have appropriate lifetimes.
basic_printf_context(basic_appender<Char> out,
basic_format_args<basic_printf_context> args)
: out_(out), args_(args) {}
auto out() -> basic_appender<Char> { return out_; }
void advance_to(basic_appender<Char>) {}
auto locale() -> detail::locale_ref { return {}; }
auto arg(int id) const -> basic_format_arg<basic_printf_context> {
return args_.get(id);
}
};
namespace detail {
// Return the result via the out param to workaround gcc bug 77539.
template <bool IS_CONSTEXPR, typename T, typename Ptr = const T*>
FMT_CONSTEXPR auto find(Ptr first, Ptr last, T value, Ptr& out) -> bool {
for (out = first; out != last; ++out) {
if (*out == value) return true;
}
return false;
}
template <>
inline auto find<false, char>(const char* first, const char* last, char value,
const char*& out) -> bool {
out =
static_cast<const char*>(memchr(first, value, to_unsigned(last - first)));
return out != nullptr;
}
// Checks if a value fits in int - used to avoid warnings about comparing
// signed and unsigned integers.
template <bool IsSigned> struct int_checker {
template <typename T> static auto fits_in_int(T value) -> bool {
unsigned max = to_unsigned(max_value<int>());
return value <= max;
}
inline static auto fits_in_int(bool) -> bool { return true; }
};
template <> struct int_checker<true> {
template <typename T> static auto fits_in_int(T value) -> bool {
return value >= (std::numeric_limits<int>::min)() &&
value <= max_value<int>();
}
inline static auto fits_in_int(int) -> bool { return true; }
};
struct printf_precision_handler {
template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)>
auto operator()(T value) -> int {
if (!int_checker<std::numeric_limits<T>::is_signed>::fits_in_int(value))
report_error("number is too big");
return (std::max)(static_cast<int>(value), 0);
}
template <typename T, FMT_ENABLE_IF(!std::is_integral<T>::value)>
auto operator()(T) -> int {
report_error("precision is not integer");
return 0;
}
};
// An argument visitor that returns true iff arg is a zero integer.
struct is_zero_int {
template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)>
auto operator()(T value) -> bool {
return value == 0;
}
template <typename T, FMT_ENABLE_IF(!std::is_integral<T>::value)>
auto operator()(T) -> bool {
return false;
}
};
template <typename T> struct make_unsigned_or_bool : std::make_unsigned<T> {};
template <> struct make_unsigned_or_bool<bool> {
using type = bool;
};
template <typename T, typename Context> class arg_converter {
private:
using char_type = typename Context::char_type;
basic_format_arg<Context>& arg_;
char_type type_;
public:
arg_converter(basic_format_arg<Context>& arg, char_type type)
: arg_(arg), type_(type) {}
void operator()(bool value) {
if (type_ != 's') operator()<bool>(value);
}
template <typename U, FMT_ENABLE_IF(std::is_integral<U>::value)>
void operator()(U value) {
bool is_signed = type_ == 'd' || type_ == 'i';
using target_type = conditional_t<std::is_same<T, void>::value, U, T>;
if (const_check(sizeof(target_type) <= sizeof(int))) {
// Extra casts are used to silence warnings.
using unsigned_type = typename make_unsigned_or_bool<target_type>::type;
if (is_signed)
arg_ = static_cast<int>(static_cast<target_type>(value));
else
arg_ = static_cast<unsigned>(static_cast<unsigned_type>(value));
} else {
// glibc's printf doesn't sign extend arguments of smaller types:
// std::printf("%lld", -42); // prints "4294967254"
// but we don't have to do the same because it's a UB.
if (is_signed)
arg_ = static_cast<long long>(value);
else
arg_ = static_cast<typename make_unsigned_or_bool<U>::type>(value);
}
}
template <typename U, FMT_ENABLE_IF(!std::is_integral<U>::value)>
void operator()(U) {} // No conversion needed for non-integral types.
};
// Converts an integer argument to T for printf, if T is an integral type.
// If T is void, the argument is converted to corresponding signed or unsigned
// type depending on the type specifier: 'd' and 'i' - signed, other -
// unsigned).
template <typename T, typename Context, typename Char>
void convert_arg(basic_format_arg<Context>& arg, Char type) {
arg.visit(arg_converter<T, Context>(arg, type));
}
// Converts an integer argument to char for printf.
template <typename Context> class char_converter {
private:
basic_format_arg<Context>& arg_;
public:
explicit char_converter(basic_format_arg<Context>& arg) : arg_(arg) {}
template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)>
void operator()(T value) {
arg_ = static_cast<typename Context::char_type>(value);
}
template <typename T, FMT_ENABLE_IF(!std::is_integral<T>::value)>
void operator()(T) {} // No conversion needed for non-integral types.
};
// An argument visitor that return a pointer to a C string if argument is a
// string or null otherwise.
template <typename Char> struct get_cstring {
template <typename T> auto operator()(T) -> const Char* { return nullptr; }
auto operator()(const Char* s) -> const Char* { return s; }
};
// Checks if an argument is a valid printf width specifier and sets
// left alignment if it is negative.
class printf_width_handler {
private:
format_specs& specs_;
public:
inline explicit printf_width_handler(format_specs& specs) : specs_(specs) {}
template <typename T, FMT_ENABLE_IF(std::is_integral<T>::value)>
auto operator()(T value) -> unsigned {
auto width = static_cast<uint32_or_64_or_128_t<T>>(value);
if (detail::is_negative(value)) {
specs_.set_align(align::left);
width = 0 - width;
}
unsigned int_max = to_unsigned(max_value<int>());
if (width > int_max) report_error("number is too big");
return static_cast<unsigned>(width);
}
template <typename T, FMT_ENABLE_IF(!std::is_integral<T>::value)>
auto operator()(T) -> unsigned {
report_error("width is not integer");
return 0;
}
};
// Workaround for a bug with the XL compiler when initializing
// printf_arg_formatter's base class.
template <typename Char>
auto make_arg_formatter(basic_appender<Char> iter, format_specs& s)
-> arg_formatter<Char> {
return {iter, s, locale_ref()};
}
// The `printf` argument formatter.
template <typename Char>
class printf_arg_formatter : public arg_formatter<Char> {
private:
using base = arg_formatter<Char>;
using context_type = basic_printf_context<Char>;
context_type& context_;
void write_null_pointer(bool is_string = false) {
auto s = this->specs;
s.set_type(presentation_type::none);
write_bytes<Char>(this->out, is_string ? "(null)" : "(nil)", s);
}
template <typename T> void write(T value) {
detail::write<Char>(this->out, value, this->specs, this->locale);
}
public:
printf_arg_formatter(basic_appender<Char> iter, format_specs& s,
context_type& ctx)
: base(make_arg_formatter(iter, s)), context_(ctx) {}
void operator()(monostate value) { write(value); }
template <typename T, FMT_ENABLE_IF(detail::is_integral<T>::value)>
void operator()(T value) {
// MSVC2013 fails to compile separate overloads for bool and Char so use
// std::is_same instead.
if (!std::is_same<T, Char>::value) {
write(value);
return;
}
format_specs s = this->specs;
if (s.type() != presentation_type::none &&
s.type() != presentation_type::chr) {
return (*this)(static_cast<int>(value));
}
s.set_sign(sign::none);
s.clear_alt();
s.set_fill(' '); // Ignore '0' flag for char types.
// align::numeric needs to be overwritten here since the '0' flag is
// ignored for non-numeric types
if (s.align() == align::none || s.align() == align::numeric)
s.set_align(align::right);
detail::write<Char>(this->out, static_cast<Char>(value), s);
}
template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value)>
void operator()(T value) {
write(value);
}
void operator()(const char* value) {
if (value)
write(value);
else
write_null_pointer(this->specs.type() != presentation_type::pointer);
}
void operator()(const wchar_t* value) {
if (value)
write(value);
else
write_null_pointer(this->specs.type() != presentation_type::pointer);
}
void operator()(basic_string_view<Char> value) { write(value); }
void operator()(const void* value) {
if (value)
write(value);
else
write_null_pointer();
}
void operator()(typename basic_format_arg<context_type>::handle handle) {
auto parse_ctx = parse_context<Char>({});
handle.format(parse_ctx, context_);
}
};
template <typename Char>
void parse_flags(format_specs& specs, const Char*& it, const Char* end) {
for (; it != end; ++it) {
switch (*it) {
case '-': specs.set_align(align::left); break;
case '+': specs.set_sign(sign::plus); break;
case '0': specs.set_fill('0'); break;
case ' ':
if (specs.sign() != sign::plus) specs.set_sign(sign::space);
break;
case '#': specs.set_alt(); break;
default: return;
}
}
}
template <typename Char, typename GetArg>
auto parse_header(const Char*& it, const Char* end, format_specs& specs,
GetArg get_arg) -> int {
int arg_index = -1;
Char c = *it;
if (c >= '0' && c <= '9') {
// Parse an argument index (if followed by '$') or a width possibly
// preceded with '0' flag(s).
int value = parse_nonnegative_int(it, end, -1);
if (it != end && *it == '$') { // value is an argument index
++it;
arg_index = value != -1 ? value : max_value<int>();
} else {
if (c == '0') specs.set_fill('0');
if (value != 0) {
// Nonzero value means that we parsed width and don't need to
// parse it or flags again, so return now.
if (value == -1) report_error("number is too big");
specs.width = value;
return arg_index;
}
}
}
parse_flags(specs, it, end);
// Parse width.
if (it != end) {
if (*it >= '0' && *it <= '9') {
specs.width = parse_nonnegative_int(it, end, -1);
if (specs.width == -1) report_error("number is too big");
} else if (*it == '*') {
++it;
specs.width = static_cast<int>(
get_arg(-1).visit(detail::printf_width_handler(specs)));
}
}
return arg_index;
}
inline auto parse_printf_presentation_type(char c, type t, bool& upper)
-> presentation_type {
using pt = presentation_type;
constexpr auto integral_set = sint_set | uint_set | bool_set | char_set;
switch (c) {
case 'd': return in(t, integral_set) ? pt::dec : pt::none;
case 'o': return in(t, integral_set) ? pt::oct : pt::none;
case 'X': upper = true; FMT_FALLTHROUGH;
case 'x': return in(t, integral_set) ? pt::hex : pt::none;
case 'E': upper = true; FMT_FALLTHROUGH;
case 'e': return in(t, float_set) ? pt::exp : pt::none;
case 'F': upper = true; FMT_FALLTHROUGH;
case 'f': return in(t, float_set) ? pt::fixed : pt::none;
case 'G': upper = true; FMT_FALLTHROUGH;
case 'g': return in(t, float_set) ? pt::general : pt::none;
case 'A': upper = true; FMT_FALLTHROUGH;
case 'a': return in(t, float_set) ? pt::hexfloat : pt::none;
case 'c': return in(t, integral_set) ? pt::chr : pt::none;
case 's': return in(t, string_set | cstring_set) ? pt::string : pt::none;
case 'p': return in(t, pointer_set | cstring_set) ? pt::pointer : pt::none;
default: return pt::none;
}
}
template <typename Char, typename Context>
void vprintf(buffer<Char>& buf, basic_string_view<Char> format,
basic_format_args<Context> args) {
using iterator = basic_appender<Char>;
auto out = iterator(buf);
auto context = basic_printf_context<Char>(out, args);
auto parse_ctx = parse_context<Char>(format);
// Returns the argument with specified index or, if arg_index is -1, the next
// argument.
auto get_arg = [&](int arg_index) {
if (arg_index < 0)
arg_index = parse_ctx.next_arg_id();
else
parse_ctx.check_arg_id(--arg_index);
return detail::get_arg(context, arg_index);
};
const Char* start = parse_ctx.begin();
const Char* end = parse_ctx.end();
auto it = start;
while (it != end) {
if (!find<false, Char>(it, end, '%', it)) {
it = end; // find leaves it == nullptr if it doesn't find '%'.
break;
}
Char c = *it++;
if (it != end && *it == c) {
write(out, basic_string_view<Char>(start, to_unsigned(it - start)));
start = ++it;
continue;
}
write(out, basic_string_view<Char>(start, to_unsigned(it - 1 - start)));
auto specs = format_specs();
specs.set_align(align::right);
// Parse argument index, flags and width.
int arg_index = parse_header(it, end, specs, get_arg);
if (arg_index == 0) report_error("argument not found");
// Parse precision.
if (it != end && *it == '.') {
++it;
c = it != end ? *it : 0;
if ('0' <= c && c <= '9') {
specs.precision = parse_nonnegative_int(it, end, 0);
} else if (c == '*') {
++it;
specs.precision =
static_cast<int>(get_arg(-1).visit(printf_precision_handler()));
} else {
specs.precision = 0;
}
}
auto arg = get_arg(arg_index);
// For d, i, o, u, x, and X conversion specifiers, if a precision is
// specified, the '0' flag is ignored
if (specs.precision >= 0 && is_integral_type(arg.type())) {
// Ignore '0' for non-numeric types or if '-' present.
specs.set_fill(' ');
}
if (specs.precision >= 0 && arg.type() == type::cstring_type) {
auto str = arg.visit(get_cstring<Char>());
auto str_end = str + specs.precision;
auto nul = std::find(str, str_end, Char());
auto sv = basic_string_view<Char>(
str, to_unsigned(nul != str_end ? nul - str : specs.precision));
arg = sv;
}
if (specs.alt() && arg.visit(is_zero_int())) specs.clear_alt();
if (specs.fill_unit<Char>() == '0') {
if (is_arithmetic_type(arg.type()) && specs.align() != align::left) {
specs.set_align(align::numeric);
} else {
// Ignore '0' flag for non-numeric types or if '-' flag is also present.
specs.set_fill(' ');
}
}
// Parse length and convert the argument to the required type.
c = it != end ? *it++ : 0;
Char t = it != end ? *it : 0;
switch (c) {
case 'h':
if (t == 'h') {
++it;
t = it != end ? *it : 0;
convert_arg<signed char>(arg, t);
} else {
convert_arg<short>(arg, t);
}
break;
case 'l':
if (t == 'l') {
++it;
t = it != end ? *it : 0;
convert_arg<long long>(arg, t);
} else {
convert_arg<long>(arg, t);
}
break;
case 'j': convert_arg<intmax_t>(arg, t); break;
case 'z': convert_arg<size_t>(arg, t); break;
case 't': convert_arg<std::ptrdiff_t>(arg, t); break;
case 'L':
// printf produces garbage when 'L' is omitted for long double, no
// need to do the same.
break;
default: --it; convert_arg<void>(arg, c);
}
// Parse type.
if (it == end) report_error("invalid format string");
char type = static_cast<char>(*it++);
if (is_integral_type(arg.type())) {
// Normalize type.
switch (type) {
case 'i':
case 'u': type = 'd'; break;
case 'c':
arg.visit(char_converter<basic_printf_context<Char>>(arg));
break;
}
}
bool upper = false;
specs.set_type(parse_printf_presentation_type(type, arg.type(), upper));
if (specs.type() == presentation_type::none)
report_error("invalid format specifier");
if (upper) specs.set_upper();
start = it;
// Format argument.
arg.visit(printf_arg_formatter<Char>(out, specs, context));
}
write(out, basic_string_view<Char>(start, to_unsigned(it - start)));
}
} // namespace detail
using printf_context = basic_printf_context<char>;
using wprintf_context = basic_printf_context<wchar_t>;
using printf_args = basic_format_args<printf_context>;
using wprintf_args = basic_format_args<wprintf_context>;
/// Constructs an `format_arg_store` object that contains references to
/// arguments and can be implicitly converted to `printf_args`.
template <typename Char = char, typename... T>
inline auto make_printf_args(T&... args)
-> decltype(fmt::make_format_args<basic_printf_context<Char>>(args...)) {
return fmt::make_format_args<basic_printf_context<Char>>(args...);
}
template <typename Char> struct vprintf_args {
using type = basic_format_args<basic_printf_context<Char>>;
};
template <typename Char>
inline auto vsprintf(basic_string_view<Char> fmt,
typename vprintf_args<Char>::type args)
-> std::basic_string<Char> {
auto buf = basic_memory_buffer<Char>();
detail::vprintf(buf, fmt, args);
return {buf.data(), buf.size()};
}
/**
* Formats `args` according to specifications in `fmt` and returns the result
* as as string.
*
* **Example**:
*
* std::string message = fmt::sprintf("The answer is %d", 42);
*/
template <typename S, typename... T, typename Char = detail::char_t<S>>
inline auto sprintf(const S& fmt, const T&... args) -> std::basic_string<Char> {
return vsprintf(detail::to_string_view(fmt),
fmt::make_format_args<basic_printf_context<Char>>(args...));
}
template <typename Char>
inline auto vfprintf(std::FILE* f, basic_string_view<Char> fmt,
typename vprintf_args<Char>::type args) -> int {
auto buf = basic_memory_buffer<Char>();
detail::vprintf(buf, fmt, args);
size_t size = buf.size();
return std::fwrite(buf.data(), sizeof(Char), size, f) < size
? -1
: static_cast<int>(size);
}
/**
* Formats `args` according to specifications in `fmt` and writes the output
* to `f`.
*
* **Example**:
*
* fmt::fprintf(stderr, "Don't %s!", "panic");
*/
template <typename S, typename... T, typename Char = detail::char_t<S>>
inline auto fprintf(std::FILE* f, const S& fmt, const T&... args) -> int {
return vfprintf(f, detail::to_string_view(fmt),
make_printf_args<Char>(args...));
}
template <typename Char>
FMT_DEPRECATED inline auto vprintf(basic_string_view<Char> fmt,
typename vprintf_args<Char>::type args)
-> int {
return vfprintf(stdout, fmt, args);
}
/**
* Formats `args` according to specifications in `fmt` and writes the output
* to `stdout`.
*
* **Example**:
*
* fmt::printf("Elapsed time: %.2f seconds", 1.23);
*/
template <typename... T>
inline auto printf(string_view fmt, const T&... args) -> int {
return vfprintf(stdout, fmt, make_printf_args(args...));
}
template <typename... T>
FMT_DEPRECATED inline auto printf(basic_string_view<wchar_t> fmt,
const T&... args) -> int {
return vfprintf(stdout, fmt, make_printf_args<wchar_t>(args...));
}
FMT_END_EXPORT
FMT_END_NAMESPACE
#endif // FMT_PRINTF_H_
third_party/fmt/include/fmt/ranges.h
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// Formatting library for C++ - range and tuple support
//
// Copyright (c) 2012 - present, Victor Zverovich and {fmt} contributors
// All rights reserved.
//
// For the license information refer to format.h.
#ifndef FMT_RANGES_H_
#define FMT_RANGES_H_
#ifndef FMT_MODULE
# include <initializer_list>
# include <iterator>
# include <string>
# include <tuple>
# include <type_traits>
# include <utility>
#endif
#include "format.h"
FMT_BEGIN_NAMESPACE
FMT_EXPORT
enum class range_format { disabled, map, set, sequence, string, debug_string };
namespace detail {
template <typename T> class is_map {
template <typename U> static auto check(U*) -> typename U::mapped_type;
template <typename> static void check(...);
public:
static constexpr const bool value =
!std::is_void<decltype(check<T>(nullptr))>::value;
};
template <typename T> class is_set {
template <typename U> static auto check(U*) -> typename U::key_type;
template <typename> static void check(...);
public:
static constexpr const bool value =
!std::is_void<decltype(check<T>(nullptr))>::value && !is_map<T>::value;
};
// C array overload
template <typename T, std::size_t N>
auto range_begin(const T (&arr)[N]) -> const T* {
return arr;
}
template <typename T, std::size_t N>
auto range_end(const T (&arr)[N]) -> const T* {
return arr + N;
}
template <typename T, typename Enable = void>
struct has_member_fn_begin_end_t : std::false_type {};
template <typename T>
struct has_member_fn_begin_end_t<T, void_t<decltype(*std::declval<T>().begin()),
decltype(std::declval<T>().end())>>
: std::true_type {};
// Member function overloads.
template <typename T>
auto range_begin(T&& rng) -> decltype(static_cast<T&&>(rng).begin()) {
return static_cast<T&&>(rng).begin();
}
template <typename T>
auto range_end(T&& rng) -> decltype(static_cast<T&&>(rng).end()) {
return static_cast<T&&>(rng).end();
}
// ADL overloads. Only participate in overload resolution if member functions
// are not found.
template <typename T>
auto range_begin(T&& rng)
-> enable_if_t<!has_member_fn_begin_end_t<T&&>::value,
decltype(begin(static_cast<T&&>(rng)))> {
return begin(static_cast<T&&>(rng));
}
template <typename T>
auto range_end(T&& rng) -> enable_if_t<!has_member_fn_begin_end_t<T&&>::value,
decltype(end(static_cast<T&&>(rng)))> {
return end(static_cast<T&&>(rng));
}
template <typename T, typename Enable = void>
struct has_const_begin_end : std::false_type {};
template <typename T, typename Enable = void>
struct has_mutable_begin_end : std::false_type {};
template <typename T>
struct has_const_begin_end<
T, void_t<decltype(*detail::range_begin(
std::declval<const remove_cvref_t<T>&>())),
decltype(detail::range_end(
std::declval<const remove_cvref_t<T>&>()))>>
: std::true_type {};
template <typename T>
struct has_mutable_begin_end<
T, void_t<decltype(*detail::range_begin(std::declval<T&>())),
decltype(detail::range_end(std::declval<T&>())),
// the extra int here is because older versions of MSVC don't
// SFINAE properly unless there are distinct types
int>> : std::true_type {};
template <typename T, typename _ = void> struct is_range_ : std::false_type {};
template <typename T>
struct is_range_<T, void>
: std::integral_constant<bool, (has_const_begin_end<T>::value ||
has_mutable_begin_end<T>::value)> {};
// tuple_size and tuple_element check.
template <typename T> class is_tuple_like_ {
template <typename U, typename V = typename std::remove_cv<U>::type>
static auto check(U* p) -> decltype(std::tuple_size<V>::value, 0);
template <typename> static void check(...);
public:
static constexpr const bool value =
!std::is_void<decltype(check<T>(nullptr))>::value;
};
// Check for integer_sequence
#if defined(__cpp_lib_integer_sequence) || FMT_MSC_VERSION >= 1900
template <typename T, T... N>
using integer_sequence = std::integer_sequence<T, N...>;
template <size_t... N> using index_sequence = std::index_sequence<N...>;
template <size_t N> using make_index_sequence = std::make_index_sequence<N>;
#else
template <typename T, T... N> struct integer_sequence {
using value_type = T;
static FMT_CONSTEXPR auto size() -> size_t { return sizeof...(N); }
};
template <size_t... N> using index_sequence = integer_sequence<size_t, N...>;
template <typename T, size_t N, T... Ns>
struct make_integer_sequence : make_integer_sequence<T, N - 1, N - 1, Ns...> {};
template <typename T, T... Ns>
struct make_integer_sequence<T, 0, Ns...> : integer_sequence<T, Ns...> {};
template <size_t N>
using make_index_sequence = make_integer_sequence<size_t, N>;
#endif
template <typename T>
using tuple_index_sequence = make_index_sequence<std::tuple_size<T>::value>;
template <typename T, typename C, bool = is_tuple_like_<T>::value>
class is_tuple_formattable_ {
public:
static constexpr const bool value = false;
};
template <typename T, typename C> class is_tuple_formattable_<T, C, true> {
template <size_t... Is>
static auto all_true(index_sequence<Is...>,
integer_sequence<bool, (Is >= 0)...>) -> std::true_type;
static auto all_true(...) -> std::false_type;
template <size_t... Is>
static auto check(index_sequence<Is...>) -> decltype(all_true(
index_sequence<Is...>{},
integer_sequence<bool,
(is_formattable<typename std::tuple_element<Is, T>::type,
C>::value)...>{}));
public:
static constexpr const bool value =
decltype(check(tuple_index_sequence<T>{}))::value;
};
template <typename Tuple, typename F, size_t... Is>
FMT_CONSTEXPR void for_each(index_sequence<Is...>, Tuple&& t, F&& f) {
using std::get;
// Using a free function get<Is>(Tuple) now.
const int unused[] = {0, ((void)f(get<Is>(t)), 0)...};
ignore_unused(unused);
}
template <typename Tuple, typename F>
FMT_CONSTEXPR void for_each(Tuple&& t, F&& f) {
for_each(tuple_index_sequence<remove_cvref_t<Tuple>>(),
std::forward<Tuple>(t), std::forward<F>(f));
}
template <typename Tuple1, typename Tuple2, typename F, size_t... Is>
void for_each2(index_sequence<Is...>, Tuple1&& t1, Tuple2&& t2, F&& f) {
using std::get;
const int unused[] = {0, ((void)f(get<Is>(t1), get<Is>(t2)), 0)...};
ignore_unused(unused);
}
template <typename Tuple1, typename Tuple2, typename F>
void for_each2(Tuple1&& t1, Tuple2&& t2, F&& f) {
for_each2(tuple_index_sequence<remove_cvref_t<Tuple1>>(),
std::forward<Tuple1>(t1), std::forward<Tuple2>(t2),
std::forward<F>(f));
}
namespace tuple {
// Workaround a bug in MSVC 2019 (v140).
template <typename Char, typename... T>
using result_t = std::tuple<formatter<remove_cvref_t<T>, Char>...>;
using std::get;
template <typename Tuple, typename Char, std::size_t... Is>
auto get_formatters(index_sequence<Is...>)
-> result_t<Char, decltype(get<Is>(std::declval<Tuple>()))...>;
} // namespace tuple
#if FMT_MSC_VERSION && FMT_MSC_VERSION < 1920
// Older MSVC doesn't get the reference type correctly for arrays.
template <typename R> struct range_reference_type_impl {
using type = decltype(*detail::range_begin(std::declval<R&>()));
};
template <typename T, std::size_t N> struct range_reference_type_impl<T[N]> {
using type = T&;
};
template <typename T>
using range_reference_type = typename range_reference_type_impl<T>::type;
#else
template <typename Range>
using range_reference_type =
decltype(*detail::range_begin(std::declval<Range&>()));
#endif
// We don't use the Range's value_type for anything, but we do need the Range's
// reference type, with cv-ref stripped.
template <typename Range>
using uncvref_type = remove_cvref_t<range_reference_type<Range>>;
template <typename Formatter>
FMT_CONSTEXPR auto maybe_set_debug_format(Formatter& f, bool set)
-> decltype(f.set_debug_format(set)) {
f.set_debug_format(set);
}
template <typename Formatter>
FMT_CONSTEXPR void maybe_set_debug_format(Formatter&, ...) {}
template <typename T>
struct range_format_kind_
: std::integral_constant<range_format,
std::is_same<uncvref_type<T>, T>::value
? range_format::disabled
: is_map<T>::value ? range_format::map
: is_set<T>::value ? range_format::set
: range_format::sequence> {};
template <range_format K>
using range_format_constant = std::integral_constant<range_format, K>;
// These are not generic lambdas for compatibility with C++11.
template <typename Char> struct parse_empty_specs {
template <typename Formatter> FMT_CONSTEXPR void operator()(Formatter& f) {
f.parse(ctx);
detail::maybe_set_debug_format(f, true);
}
parse_context<Char>& ctx;
};
template <typename FormatContext> struct format_tuple_element {
using char_type = typename FormatContext::char_type;
template <typename T>
void operator()(const formatter<T, char_type>& f, const T& v) {
if (i > 0) ctx.advance_to(detail::copy<char_type>(separator, ctx.out()));
ctx.advance_to(f.format(v, ctx));
++i;
}
int i;
FormatContext& ctx;
basic_string_view<char_type> separator;
};
} // namespace detail
template <typename T> struct is_tuple_like {
static constexpr const bool value =
detail::is_tuple_like_<T>::value && !detail::is_range_<T>::value;
};
template <typename T, typename C> struct is_tuple_formattable {
static constexpr const bool value =
detail::is_tuple_formattable_<T, C>::value;
};
template <typename Tuple, typename Char>
struct formatter<Tuple, Char,
enable_if_t<fmt::is_tuple_like<Tuple>::value &&
fmt::is_tuple_formattable<Tuple, Char>::value>> {
private:
decltype(detail::tuple::get_formatters<Tuple, Char>(
detail::tuple_index_sequence<Tuple>())) formatters_;
basic_string_view<Char> separator_ = detail::string_literal<Char, ',', ' '>{};
basic_string_view<Char> opening_bracket_ =
detail::string_literal<Char, '('>{};
basic_string_view<Char> closing_bracket_ =
detail::string_literal<Char, ')'>{};
public:
FMT_CONSTEXPR formatter() {}
FMT_CONSTEXPR void set_separator(basic_string_view<Char> sep) {
separator_ = sep;
}
FMT_CONSTEXPR void set_brackets(basic_string_view<Char> open,
basic_string_view<Char> close) {
opening_bracket_ = open;
closing_bracket_ = close;
}
FMT_CONSTEXPR auto parse(parse_context<Char>& ctx) -> const Char* {
auto it = ctx.begin();
auto end = ctx.end();
if (it != end && detail::to_ascii(*it) == 'n') {
++it;
set_brackets({}, {});
set_separator({});
}
if (it != end && *it != '}') report_error("invalid format specifier");
ctx.advance_to(it);
detail::for_each(formatters_, detail::parse_empty_specs<Char>{ctx});
return it;
}
template <typename FormatContext>
auto format(const Tuple& value, FormatContext& ctx) const
-> decltype(ctx.out()) {
ctx.advance_to(detail::copy<Char>(opening_bracket_, ctx.out()));
detail::for_each2(
formatters_, value,
detail::format_tuple_element<FormatContext>{0, ctx, separator_});
return detail::copy<Char>(closing_bracket_, ctx.out());
}
};
template <typename T, typename Char> struct is_range {
static constexpr const bool value =
detail::is_range_<T>::value && !detail::has_to_string_view<T>::value;
};
namespace detail {
template <typename Char, typename Element>
using range_formatter_type = formatter<remove_cvref_t<Element>, Char>;
template <typename R>
using maybe_const_range =
conditional_t<has_const_begin_end<R>::value, const R, R>;
template <typename R, typename Char>
struct is_formattable_delayed
: is_formattable<uncvref_type<maybe_const_range<R>>, Char> {};
} // namespace detail
template <typename...> struct conjunction : std::true_type {};
template <typename P> struct conjunction<P> : P {};
template <typename P1, typename... Pn>
struct conjunction<P1, Pn...>
: conditional_t<bool(P1::value), conjunction<Pn...>, P1> {};
template <typename T, typename Char, typename Enable = void>
struct range_formatter;
template <typename T, typename Char>
struct range_formatter<
T, Char,
enable_if_t<conjunction<std::is_same<T, remove_cvref_t<T>>,
is_formattable<T, Char>>::value>> {
private:
detail::range_formatter_type<Char, T> underlying_;
basic_string_view<Char> separator_ = detail::string_literal<Char, ',', ' '>{};
basic_string_view<Char> opening_bracket_ =
detail::string_literal<Char, '['>{};
basic_string_view<Char> closing_bracket_ =
detail::string_literal<Char, ']'>{};
bool is_debug = false;
template <typename Output, typename It, typename Sentinel, typename U = T,
FMT_ENABLE_IF(std::is_same<U, Char>::value)>
auto write_debug_string(Output& out, It it, Sentinel end) const -> Output {
auto buf = basic_memory_buffer<Char>();
for (; it != end; ++it) buf.push_back(*it);
auto specs = format_specs();
specs.set_type(presentation_type::debug);
return detail::write<Char>(
out, basic_string_view<Char>(buf.data(), buf.size()), specs);
}
template <typename Output, typename It, typename Sentinel, typename U = T,
FMT_ENABLE_IF(!std::is_same<U, Char>::value)>
auto write_debug_string(Output& out, It, Sentinel) const -> Output {
return out;
}
public:
FMT_CONSTEXPR range_formatter() {}
FMT_CONSTEXPR auto underlying() -> detail::range_formatter_type<Char, T>& {
return underlying_;
}
FMT_CONSTEXPR void set_separator(basic_string_view<Char> sep) {
separator_ = sep;
}
FMT_CONSTEXPR void set_brackets(basic_string_view<Char> open,
basic_string_view<Char> close) {
opening_bracket_ = open;
closing_bracket_ = close;
}
FMT_CONSTEXPR auto parse(parse_context<Char>& ctx) -> const Char* {
auto it = ctx.begin();
auto end = ctx.end();
detail::maybe_set_debug_format(underlying_, true);
if (it == end) return underlying_.parse(ctx);
switch (detail::to_ascii(*it)) {
case 'n':
set_brackets({}, {});
++it;
break;
case '?':
is_debug = true;
set_brackets({}, {});
++it;
if (it == end || *it != 's') report_error("invalid format specifier");
FMT_FALLTHROUGH;
case 's':
if (!std::is_same<T, Char>::value)
report_error("invalid format specifier");
if (!is_debug) {
set_brackets(detail::string_literal<Char, '"'>{},
detail::string_literal<Char, '"'>{});
set_separator({});
detail::maybe_set_debug_format(underlying_, false);
}
++it;
return it;
}
if (it != end && *it != '}') {
if (*it != ':') report_error("invalid format specifier");
detail::maybe_set_debug_format(underlying_, false);
++it;
}
ctx.advance_to(it);
return underlying_.parse(ctx);
}
template <typename R, typename FormatContext>
auto format(R&& range, FormatContext& ctx) const -> decltype(ctx.out()) {
auto out = ctx.out();
auto it = detail::range_begin(range);
auto end = detail::range_end(range);
if (is_debug) return write_debug_string(out, std::move(it), end);
out = detail::copy<Char>(opening_bracket_, out);
int i = 0;
for (; it != end; ++it) {
if (i > 0) out = detail::copy<Char>(separator_, out);
ctx.advance_to(out);
auto&& item = *it; // Need an lvalue
out = underlying_.format(item, ctx);
++i;
}
out = detail::copy<Char>(closing_bracket_, out);
return out;
}
};
FMT_EXPORT
template <typename T, typename Char, typename Enable = void>
struct range_format_kind
: conditional_t<
is_range<T, Char>::value, detail::range_format_kind_<T>,
std::integral_constant<range_format, range_format::disabled>> {};
template <typename R, typename Char>
struct formatter<
R, Char,
enable_if_t<conjunction<
bool_constant<
range_format_kind<R, Char>::value != range_format::disabled &&
range_format_kind<R, Char>::value != range_format::map &&
range_format_kind<R, Char>::value != range_format::string &&
range_format_kind<R, Char>::value != range_format::debug_string>,
detail::is_formattable_delayed<R, Char>>::value>> {
private:
using range_type = detail::maybe_const_range<R>;
range_formatter<detail::uncvref_type<range_type>, Char> range_formatter_;
public:
using nonlocking = void;
FMT_CONSTEXPR formatter() {
if (detail::const_check(range_format_kind<R, Char>::value !=
range_format::set))
return;
range_formatter_.set_brackets(detail::string_literal<Char, '{'>{},
detail::string_literal<Char, '}'>{});
}
FMT_CONSTEXPR auto parse(parse_context<Char>& ctx) -> const Char* {
return range_formatter_.parse(ctx);
}
template <typename FormatContext>
auto format(range_type& range, FormatContext& ctx) const
-> decltype(ctx.out()) {
return range_formatter_.format(range, ctx);
}
};
// A map formatter.
template <typename R, typename Char>
struct formatter<
R, Char,
enable_if_t<conjunction<
bool_constant<range_format_kind<R, Char>::value == range_format::map>,
detail::is_formattable_delayed<R, Char>>::value>> {
private:
using map_type = detail::maybe_const_range<R>;
using element_type = detail::uncvref_type<map_type>;
decltype(detail::tuple::get_formatters<element_type, Char>(
detail::tuple_index_sequence<element_type>())) formatters_;
bool no_delimiters_ = false;
public:
FMT_CONSTEXPR formatter() {}
FMT_CONSTEXPR auto parse(parse_context<Char>& ctx) -> const Char* {
auto it = ctx.begin();
auto end = ctx.end();
if (it != end) {
if (detail::to_ascii(*it) == 'n') {
no_delimiters_ = true;
++it;
}
if (it != end && *it != '}') {
if (*it != ':') report_error("invalid format specifier");
++it;
}
ctx.advance_to(it);
}
detail::for_each(formatters_, detail::parse_empty_specs<Char>{ctx});
return it;
}
template <typename FormatContext>
auto format(map_type& map, FormatContext& ctx) const -> decltype(ctx.out()) {
auto out = ctx.out();
basic_string_view<Char> open = detail::string_literal<Char, '{'>{};
if (!no_delimiters_) out = detail::copy<Char>(open, out);
int i = 0;
basic_string_view<Char> sep = detail::string_literal<Char, ',', ' '>{};
for (auto&& value : map) {
if (i > 0) out = detail::copy<Char>(sep, out);
ctx.advance_to(out);
detail::for_each2(formatters_, value,
detail::format_tuple_element<FormatContext>{
0, ctx, detail::string_literal<Char, ':', ' '>{}});
++i;
}
basic_string_view<Char> close = detail::string_literal<Char, '}'>{};
if (!no_delimiters_) out = detail::copy<Char>(close, out);
return out;
}
};
// A (debug_)string formatter.
template <typename R, typename Char>
struct formatter<
R, Char,
enable_if_t<range_format_kind<R, Char>::value == range_format::string ||
range_format_kind<R, Char>::value ==
range_format::debug_string>> {
private:
using range_type = detail::maybe_const_range<R>;
using string_type =
conditional_t<std::is_constructible<
detail::std_string_view<Char>,
decltype(detail::range_begin(std::declval<R>())),
decltype(detail::range_end(std::declval<R>()))>::value,
detail::std_string_view<Char>, std::basic_string<Char>>;
formatter<string_type, Char> underlying_;
public:
FMT_CONSTEXPR auto parse(parse_context<Char>& ctx) -> const Char* {
return underlying_.parse(ctx);
}
template <typename FormatContext>
auto format(range_type& range, FormatContext& ctx) const
-> decltype(ctx.out()) {
auto out = ctx.out();
if (detail::const_check(range_format_kind<R, Char>::value ==
range_format::debug_string))
*out++ = '"';
out = underlying_.format(
string_type{detail::range_begin(range), detail::range_end(range)}, ctx);
if (detail::const_check(range_format_kind<R, Char>::value ==
range_format::debug_string))
*out++ = '"';
return out;
}
};
template <typename It, typename Sentinel, typename Char = char>
struct join_view : detail::view {
It begin;
Sentinel end;
basic_string_view<Char> sep;
join_view(It b, Sentinel e, basic_string_view<Char> s)
: begin(std::move(b)), end(e), sep(s) {}
};
template <typename It, typename Sentinel, typename Char>
struct formatter<join_view<It, Sentinel, Char>, Char> {
private:
using value_type =
#ifdef __cpp_lib_ranges
std::iter_value_t<It>;
#else
typename std::iterator_traits<It>::value_type;
#endif
formatter<remove_cvref_t<value_type>, Char> value_formatter_;
using view = conditional_t<std::is_copy_constructible<It>::value,
const join_view<It, Sentinel, Char>,
join_view<It, Sentinel, Char>>;
public:
using nonlocking = void;
FMT_CONSTEXPR auto parse(parse_context<Char>& ctx) -> const Char* {
return value_formatter_.parse(ctx);
}
template <typename FormatContext>
auto format(view& value, FormatContext& ctx) const -> decltype(ctx.out()) {
using iter =
conditional_t<std::is_copy_constructible<view>::value, It, It&>;
iter it = value.begin;
auto out = ctx.out();
if (it == value.end) return out;
out = value_formatter_.format(*it, ctx);
++it;
while (it != value.end) {
out = detail::copy<Char>(value.sep.begin(), value.sep.end(), out);
ctx.advance_to(out);
out = value_formatter_.format(*it, ctx);
++it;
}
return out;
}
};
template <typename Char, typename Tuple> struct tuple_join_view : detail::view {
const Tuple& tuple;
basic_string_view<Char> sep;
tuple_join_view(const Tuple& t, basic_string_view<Char> s)
: tuple(t), sep{s} {}
};
// Define FMT_TUPLE_JOIN_SPECIFIERS to enable experimental format specifiers
// support in tuple_join. It is disabled by default because of issues with
// the dynamic width and precision.
#ifndef FMT_TUPLE_JOIN_SPECIFIERS
# define FMT_TUPLE_JOIN_SPECIFIERS 0
#endif
template <typename Char, typename Tuple>
struct formatter<tuple_join_view<Char, Tuple>, Char,
enable_if_t<is_tuple_like<Tuple>::value>> {
FMT_CONSTEXPR auto parse(parse_context<Char>& ctx) -> const Char* {
return do_parse(ctx, std::tuple_size<Tuple>());
}
template <typename FormatContext>
auto format(const tuple_join_view<Char, Tuple>& value,
FormatContext& ctx) const -> typename FormatContext::iterator {
return do_format(value, ctx, std::tuple_size<Tuple>());
}
private:
decltype(detail::tuple::get_formatters<Tuple, Char>(
detail::tuple_index_sequence<Tuple>())) formatters_;
FMT_CONSTEXPR auto do_parse(parse_context<Char>& ctx,
std::integral_constant<size_t, 0>)
-> const Char* {
return ctx.begin();
}
template <size_t N>
FMT_CONSTEXPR auto do_parse(parse_context<Char>& ctx,
std::integral_constant<size_t, N>)
-> const Char* {
auto end = ctx.begin();
#if FMT_TUPLE_JOIN_SPECIFIERS
end = std::get<std::tuple_size<Tuple>::value - N>(formatters_).parse(ctx);
if (N > 1) {
auto end1 = do_parse(ctx, std::integral_constant<size_t, N - 1>());
if (end != end1)
report_error("incompatible format specs for tuple elements");
}
#endif
return end;
}
template <typename FormatContext>
auto do_format(const tuple_join_view<Char, Tuple>&, FormatContext& ctx,
std::integral_constant<size_t, 0>) const ->
typename FormatContext::iterator {
return ctx.out();
}
template <typename FormatContext, size_t N>
auto do_format(const tuple_join_view<Char, Tuple>& value, FormatContext& ctx,
std::integral_constant<size_t, N>) const ->
typename FormatContext::iterator {
using std::get;
auto out =
std::get<std::tuple_size<Tuple>::value - N>(formatters_)
.format(get<std::tuple_size<Tuple>::value - N>(value.tuple), ctx);
if (N <= 1) return out;
out = detail::copy<Char>(value.sep, out);
ctx.advance_to(out);
return do_format(value, ctx, std::integral_constant<size_t, N - 1>());
}
};
namespace detail {
// Check if T has an interface like a container adaptor (e.g. std::stack,
// std::queue, std::priority_queue).
template <typename T> class is_container_adaptor_like {
template <typename U> static auto check(U* p) -> typename U::container_type;
template <typename> static void check(...);
public:
static constexpr const bool value =
!std::is_void<decltype(check<T>(nullptr))>::value;
};
template <typename Container> struct all {
const Container& c;
auto begin() const -> typename Container::const_iterator { return c.begin(); }
auto end() const -> typename Container::const_iterator { return c.end(); }
};
} // namespace detail
template <typename T, typename Char>
struct formatter<
T, Char,
enable_if_t<conjunction<detail::is_container_adaptor_like<T>,
bool_constant<range_format_kind<T, Char>::value ==
range_format::disabled>>::value>>
: formatter<detail::all<typename T::container_type>, Char> {
using all = detail::all<typename T::container_type>;
template <typename FormatContext>
auto format(const T& value, FormatContext& ctx) const -> decltype(ctx.out()) {
struct getter : T {
static auto get(const T& v) -> all {
return {v.*(&getter::c)}; // Access c through the derived class.
}
};
return formatter<all>::format(getter::get(value), ctx);
}
};
FMT_BEGIN_EXPORT
/// Returns a view that formats the iterator range `[begin, end)` with elements
/// separated by `sep`.
template <typename It, typename Sentinel>
auto join(It begin, Sentinel end, string_view sep) -> join_view<It, Sentinel> {
return {std::move(begin), end, sep};
}
/**
* Returns a view that formats `range` with elements separated by `sep`.
*
* **Example**:
*
* auto v = std::vector<int>{1, 2, 3};
* fmt::print("{}", fmt::join(v, ", "));
* // Output: 1, 2, 3
*
* `fmt::join` applies passed format specifiers to the range elements:
*
* fmt::print("{:02}", fmt::join(v, ", "));
* // Output: 01, 02, 03
*/
template <typename Range, FMT_ENABLE_IF(!is_tuple_like<Range>::value)>
auto join(Range&& r, string_view sep)
-> join_view<decltype(detail::range_begin(r)),
decltype(detail::range_end(r))> {
return {detail::range_begin(r), detail::range_end(r), sep};
}
/**
* Returns an object that formats `std::tuple` with elements separated by `sep`.
*
* **Example**:
*
* auto t = std::tuple<int, char>{1, 'a'};
* fmt::print("{}", fmt::join(t, ", "));
* // Output: 1, a
*/
template <typename Tuple, FMT_ENABLE_IF(is_tuple_like<Tuple>::value)>
FMT_CONSTEXPR auto join(const Tuple& tuple, string_view sep)
-> tuple_join_view<char, Tuple> {
return {tuple, sep};
}
/**
* Returns an object that formats `std::initializer_list` with elements
* separated by `sep`.
*
* **Example**:
*
* fmt::print("{}", fmt::join({1, 2, 3}, ", "));
* // Output: "1, 2, 3"
*/
template <typename T>
auto join(std::initializer_list<T> list, string_view sep)
-> join_view<const T*, const T*> {
return join(std::begin(list), std::end(list), sep);
}
FMT_END_EXPORT
FMT_END_NAMESPACE
#endif // FMT_RANGES_H_
third_party/fmt/include/fmt/std.h
Vendored
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@@ -1,728 +0,0 @@
// Formatting library for C++ - formatters for standard library types
//
// Copyright (c) 2012 - present, Victor Zverovich
// All rights reserved.
//
// For the license information refer to format.h.
#ifndef FMT_STD_H_
#define FMT_STD_H_
#include "format.h"
#include "ostream.h"
#ifndef FMT_MODULE
# include <atomic>
# include <bitset>
# include <complex>
# include <cstdlib>
# include <exception>
# include <functional>
# include <memory>
# include <thread>
# include <type_traits>
# include <typeinfo>
# include <utility>
# include <vector>
// Check FMT_CPLUSPLUS to suppress a bogus warning in MSVC.
# if FMT_CPLUSPLUS >= 201703L
# if FMT_HAS_INCLUDE(<filesystem>) && \
(!defined(FMT_CPP_LIB_FILESYSTEM) || FMT_CPP_LIB_FILESYSTEM != 0)
# include <filesystem>
# endif
# if FMT_HAS_INCLUDE(<variant>)
# include <variant>
# endif
# if FMT_HAS_INCLUDE(<optional>)
# include <optional>
# endif
# endif
// Use > instead of >= in the version check because <source_location> may be
// available after C++17 but before C++20 is marked as implemented.
# if FMT_CPLUSPLUS > 201703L && FMT_HAS_INCLUDE(<source_location>)
# include <source_location>
# endif
# if FMT_CPLUSPLUS > 202002L && FMT_HAS_INCLUDE(<expected>)
# include <expected>
# endif
#endif // FMT_MODULE
#if FMT_HAS_INCLUDE(<version>)
# include <version>
#endif
// GCC 4 does not support FMT_HAS_INCLUDE.
#if FMT_HAS_INCLUDE(<cxxabi.h>) || defined(__GLIBCXX__)
# include <cxxabi.h>
// Android NDK with gabi++ library on some architectures does not implement
// abi::__cxa_demangle().
# ifndef __GABIXX_CXXABI_H__
# define FMT_HAS_ABI_CXA_DEMANGLE
# endif
#endif
// For older Xcode versions, __cpp_lib_xxx flags are inaccurately defined.
#ifndef FMT_CPP_LIB_FILESYSTEM
# ifdef __cpp_lib_filesystem
# define FMT_CPP_LIB_FILESYSTEM __cpp_lib_filesystem
# else
# define FMT_CPP_LIB_FILESYSTEM 0
# endif
#endif
#ifndef FMT_CPP_LIB_VARIANT
# ifdef __cpp_lib_variant
# define FMT_CPP_LIB_VARIANT __cpp_lib_variant
# else
# define FMT_CPP_LIB_VARIANT 0
# endif
#endif
#if FMT_CPP_LIB_FILESYSTEM
FMT_BEGIN_NAMESPACE
namespace detail {
template <typename Char, typename PathChar>
auto get_path_string(const std::filesystem::path& p,
const std::basic_string<PathChar>& native) {
if constexpr (std::is_same_v<Char, char> && std::is_same_v<PathChar, wchar_t>)
return to_utf8<wchar_t>(native, to_utf8_error_policy::replace);
else
return p.string<Char>();
}
template <typename Char, typename PathChar>
void write_escaped_path(basic_memory_buffer<Char>& quoted,
const std::filesystem::path& p,
const std::basic_string<PathChar>& native) {
if constexpr (std::is_same_v<Char, char> &&
std::is_same_v<PathChar, wchar_t>) {
auto buf = basic_memory_buffer<wchar_t>();
write_escaped_string<wchar_t>(std::back_inserter(buf), native);
bool valid = to_utf8<wchar_t>::convert(quoted, {buf.data(), buf.size()});
FMT_ASSERT(valid, "invalid utf16");
} else if constexpr (std::is_same_v<Char, PathChar>) {
write_escaped_string<std::filesystem::path::value_type>(
std::back_inserter(quoted), native);
} else {
write_escaped_string<Char>(std::back_inserter(quoted), p.string<Char>());
}
}
} // namespace detail
template <typename Char> struct formatter<std::filesystem::path, Char> {
private:
format_specs specs_;
detail::arg_ref<Char> width_ref_;
bool debug_ = false;
char path_type_ = 0;
public:
FMT_CONSTEXPR void set_debug_format(bool set = true) { debug_ = set; }
FMT_CONSTEXPR auto parse(parse_context<Char>& ctx) {
auto it = ctx.begin(), end = ctx.end();
if (it == end) return it;
it = detail::parse_align(it, end, specs_);
if (it == end) return it;
Char c = *it;
if ((c >= '0' && c <= '9') || c == '{')
it = detail::parse_width(it, end, specs_, width_ref_, ctx);
if (it != end && *it == '?') {
debug_ = true;
++it;
}
if (it != end && (*it == 'g')) path_type_ = detail::to_ascii(*it++);
return it;
}
template <typename FormatContext>
auto format(const std::filesystem::path& p, FormatContext& ctx) const {
auto specs = specs_;
auto path_string =
!path_type_ ? p.native()
: p.generic_string<std::filesystem::path::value_type>();
detail::handle_dynamic_spec(specs.dynamic_width(), specs.width, width_ref_,
ctx);
if (!debug_) {
auto s = detail::get_path_string<Char>(p, path_string);
return detail::write(ctx.out(), basic_string_view<Char>(s), specs);
}
auto quoted = basic_memory_buffer<Char>();
detail::write_escaped_path(quoted, p, path_string);
return detail::write(ctx.out(),
basic_string_view<Char>(quoted.data(), quoted.size()),
specs);
}
};
class path : public std::filesystem::path {
public:
auto display_string() const -> std::string {
const std::filesystem::path& base = *this;
return fmt::format(FMT_STRING("{}"), base);
}
auto system_string() const -> std::string { return string(); }
auto generic_display_string() const -> std::string {
const std::filesystem::path& base = *this;
return fmt::format(FMT_STRING("{:g}"), base);
}
auto generic_system_string() const -> std::string { return generic_string(); }
};
FMT_END_NAMESPACE
#endif // FMT_CPP_LIB_FILESYSTEM
FMT_BEGIN_NAMESPACE
template <std::size_t N, typename Char>
struct formatter<std::bitset<N>, Char>
: nested_formatter<basic_string_view<Char>, Char> {
private:
// Functor because C++11 doesn't support generic lambdas.
struct writer {
const std::bitset<N>& bs;
template <typename OutputIt>
FMT_CONSTEXPR auto operator()(OutputIt out) -> OutputIt {
for (auto pos = N; pos > 0; --pos) {
out = detail::write<Char>(out, bs[pos - 1] ? Char('1') : Char('0'));
}
return out;
}
};
public:
template <typename FormatContext>
auto format(const std::bitset<N>& bs, FormatContext& ctx) const
-> decltype(ctx.out()) {
return this->write_padded(ctx, writer{bs});
}
};
template <typename Char>
struct formatter<std::thread::id, Char> : basic_ostream_formatter<Char> {};
FMT_END_NAMESPACE
#ifdef __cpp_lib_optional
FMT_BEGIN_NAMESPACE
template <typename T, typename Char>
struct formatter<std::optional<T>, Char,
std::enable_if_t<is_formattable<T, Char>::value>> {
private:
formatter<T, Char> underlying_;
static constexpr basic_string_view<Char> optional =
detail::string_literal<Char, 'o', 'p', 't', 'i', 'o', 'n', 'a', 'l',
'('>{};
static constexpr basic_string_view<Char> none =
detail::string_literal<Char, 'n', 'o', 'n', 'e'>{};
template <class U>
FMT_CONSTEXPR static auto maybe_set_debug_format(U& u, bool set)
-> decltype(u.set_debug_format(set)) {
u.set_debug_format(set);
}
template <class U>
FMT_CONSTEXPR static void maybe_set_debug_format(U&, ...) {}
public:
FMT_CONSTEXPR auto parse(parse_context<Char>& ctx) {
maybe_set_debug_format(underlying_, true);
return underlying_.parse(ctx);
}
template <typename FormatContext>
auto format(const std::optional<T>& opt, FormatContext& ctx) const
-> decltype(ctx.out()) {
if (!opt) return detail::write<Char>(ctx.out(), none);
auto out = ctx.out();
out = detail::write<Char>(out, optional);
ctx.advance_to(out);
out = underlying_.format(*opt, ctx);
return detail::write(out, ')');
}
};
FMT_END_NAMESPACE
#endif // __cpp_lib_optional
#if defined(__cpp_lib_expected) || FMT_CPP_LIB_VARIANT
FMT_BEGIN_NAMESPACE
namespace detail {
template <typename Char, typename OutputIt, typename T>
auto write_escaped_alternative(OutputIt out, const T& v) -> OutputIt {
if constexpr (has_to_string_view<T>::value)
return write_escaped_string<Char>(out, detail::to_string_view(v));
if constexpr (std::is_same_v<T, Char>) return write_escaped_char(out, v);
return write<Char>(out, v);
}
} // namespace detail
FMT_END_NAMESPACE
#endif
#ifdef __cpp_lib_expected
FMT_BEGIN_NAMESPACE
template <typename T, typename E, typename Char>
struct formatter<std::expected<T, E>, Char,
std::enable_if_t<(std::is_void<T>::value ||
is_formattable<T, Char>::value) &&
is_formattable<E, Char>::value>> {
FMT_CONSTEXPR auto parse(parse_context<Char>& ctx) -> const Char* {
return ctx.begin();
}
template <typename FormatContext>
auto format(const std::expected<T, E>& value, FormatContext& ctx) const
-> decltype(ctx.out()) {
auto out = ctx.out();
if (value.has_value()) {
out = detail::write<Char>(out, "expected(");
if constexpr (!std::is_void<T>::value)
out = detail::write_escaped_alternative<Char>(out, *value);
} else {
out = detail::write<Char>(out, "unexpected(");
out = detail::write_escaped_alternative<Char>(out, value.error());
}
*out++ = ')';
return out;
}
};
FMT_END_NAMESPACE
#endif // __cpp_lib_expected
#ifdef __cpp_lib_source_location
FMT_BEGIN_NAMESPACE
template <> struct formatter<std::source_location> {
FMT_CONSTEXPR auto parse(parse_context<>& ctx) { return ctx.begin(); }
template <typename FormatContext>
auto format(const std::source_location& loc, FormatContext& ctx) const
-> decltype(ctx.out()) {
auto out = ctx.out();
out = detail::write(out, loc.file_name());
out = detail::write(out, ':');
out = detail::write<char>(out, loc.line());
out = detail::write(out, ':');
out = detail::write<char>(out, loc.column());
out = detail::write(out, ": ");
out = detail::write(out, loc.function_name());
return out;
}
};
FMT_END_NAMESPACE
#endif
#if FMT_CPP_LIB_VARIANT
FMT_BEGIN_NAMESPACE
namespace detail {
template <typename T>
using variant_index_sequence =
std::make_index_sequence<std::variant_size<T>::value>;
template <typename> struct is_variant_like_ : std::false_type {};
template <typename... Types>
struct is_variant_like_<std::variant<Types...>> : std::true_type {};
// formattable element check.
template <typename T, typename C> class is_variant_formattable_ {
template <std::size_t... Is>
static std::conjunction<
is_formattable<std::variant_alternative_t<Is, T>, C>...>
check(std::index_sequence<Is...>);
public:
static constexpr const bool value =
decltype(check(variant_index_sequence<T>{}))::value;
};
} // namespace detail
template <typename T> struct is_variant_like {
static constexpr const bool value = detail::is_variant_like_<T>::value;
};
template <typename T, typename C> struct is_variant_formattable {
static constexpr const bool value =
detail::is_variant_formattable_<T, C>::value;
};
template <typename Char> struct formatter<std::monostate, Char> {
FMT_CONSTEXPR auto parse(parse_context<Char>& ctx) -> const Char* {
return ctx.begin();
}
template <typename FormatContext>
auto format(const std::monostate&, FormatContext& ctx) const
-> decltype(ctx.out()) {
return detail::write<Char>(ctx.out(), "monostate");
}
};
template <typename Variant, typename Char>
struct formatter<
Variant, Char,
std::enable_if_t<std::conjunction_v<
is_variant_like<Variant>, is_variant_formattable<Variant, Char>>>> {
FMT_CONSTEXPR auto parse(parse_context<Char>& ctx) -> const Char* {
return ctx.begin();
}
template <typename FormatContext>
auto format(const Variant& value, FormatContext& ctx) const
-> decltype(ctx.out()) {
auto out = ctx.out();
out = detail::write<Char>(out, "variant(");
FMT_TRY {
std::visit(
[&](const auto& v) {
out = detail::write_escaped_alternative<Char>(out, v);
},
value);
}
FMT_CATCH(const std::bad_variant_access&) {
detail::write<Char>(out, "valueless by exception");
}
*out++ = ')';
return out;
}
};
FMT_END_NAMESPACE
#endif // FMT_CPP_LIB_VARIANT
FMT_BEGIN_NAMESPACE
template <> struct formatter<std::error_code> {
private:
format_specs specs_;
detail::arg_ref<char> width_ref_;
bool debug_ = false;
public:
FMT_CONSTEXPR auto parse(parse_context<>& ctx) -> const char* {
auto it = ctx.begin(), end = ctx.end();
if (it == end) return it;
it = detail::parse_align(it, end, specs_);
char c = *it;
if (it != end && ((c >= '0' && c <= '9') || c == '{'))
it = detail::parse_width(it, end, specs_, width_ref_, ctx);
if (it != end && *it == '?') {
debug_ = true;
++it;
}
if (it != end && *it == 's') {
specs_.set_type(presentation_type::string);
++it;
}
return it;
}
template <typename FormatContext>
FMT_CONSTEXPR20 auto format(const std::error_code& ec,
FormatContext& ctx) const -> decltype(ctx.out()) {
auto specs = specs_;
detail::handle_dynamic_spec(specs.dynamic_width(), specs.width, width_ref_,
ctx);
auto buf = memory_buffer();
if (specs_.type() == presentation_type::string) {
buf.append(ec.message());
} else {
buf.append(string_view(ec.category().name()));
buf.push_back(':');
detail::write<char>(appender(buf), ec.value());
}
auto quoted = memory_buffer();
auto str = string_view(buf.data(), buf.size());
if (debug_) {
detail::write_escaped_string<char>(std::back_inserter(quoted), str);
str = string_view(quoted.data(), quoted.size());
}
return detail::write<char>(ctx.out(), str, specs);
}
};
#if FMT_USE_RTTI
namespace detail {
template <typename Char, typename OutputIt>
auto write_demangled_name(OutputIt out, const std::type_info& ti) -> OutputIt {
# ifdef FMT_HAS_ABI_CXA_DEMANGLE
int status = 0;
std::size_t size = 0;
std::unique_ptr<char, void (*)(void*)> demangled_name_ptr(
abi::__cxa_demangle(ti.name(), nullptr, &size, &status), &std::free);
string_view demangled_name_view;
if (demangled_name_ptr) {
demangled_name_view = demangled_name_ptr.get();
// Normalization of stdlib inline namespace names.
// libc++ inline namespaces.
// std::__1::* -> std::*
// std::__1::__fs::* -> std::*
// libstdc++ inline namespaces.
// std::__cxx11::* -> std::*
// std::filesystem::__cxx11::* -> std::filesystem::*
if (demangled_name_view.starts_with("std::")) {
char* begin = demangled_name_ptr.get();
char* to = begin + 5; // std::
for (char *from = to, *end = begin + demangled_name_view.size();
from < end;) {
// This is safe, because demangled_name is NUL-terminated.
if (from[0] == '_' && from[1] == '_') {
char* next = from + 1;
while (next < end && *next != ':') next++;
if (next[0] == ':' && next[1] == ':') {
from = next + 2;
continue;
}
}
*to++ = *from++;
}
demangled_name_view = {begin, detail::to_unsigned(to - begin)};
}
} else {
demangled_name_view = string_view(ti.name());
}
return detail::write_bytes<Char>(out, demangled_name_view);
# elif FMT_MSC_VERSION
const string_view demangled_name(ti.name());
for (std::size_t i = 0; i < demangled_name.size(); ++i) {
auto sub = demangled_name;
sub.remove_prefix(i);
if (sub.starts_with("enum ")) {
i += 4;
continue;
}
if (sub.starts_with("class ") || sub.starts_with("union ")) {
i += 5;
continue;
}
if (sub.starts_with("struct ")) {
i += 6;
continue;
}
if (*sub.begin() != ' ') *out++ = *sub.begin();
}
return out;
# else
return detail::write_bytes<Char>(out, string_view(ti.name()));
# endif
}
} // namespace detail
template <typename Char>
struct formatter<std::type_info, Char // DEPRECATED! Mixing code unit types.
> {
public:
FMT_CONSTEXPR auto parse(parse_context<Char>& ctx) -> const Char* {
return ctx.begin();
}
template <typename Context>
auto format(const std::type_info& ti, Context& ctx) const
-> decltype(ctx.out()) {
return detail::write_demangled_name<Char>(ctx.out(), ti);
}
};
#endif
template <typename T, typename Char>
struct formatter<
T, Char, // DEPRECATED! Mixing code unit types.
typename std::enable_if<std::is_base_of<std::exception, T>::value>::type> {
private:
bool with_typename_ = false;
public:
FMT_CONSTEXPR auto parse(parse_context<Char>& ctx) -> const Char* {
auto it = ctx.begin();
auto end = ctx.end();
if (it == end || *it == '}') return it;
if (*it == 't') {
++it;
with_typename_ = FMT_USE_RTTI != 0;
}
return it;
}
template <typename Context>
auto format(const std::exception& ex, Context& ctx) const
-> decltype(ctx.out()) {
auto out = ctx.out();
#if FMT_USE_RTTI
if (with_typename_) {
out = detail::write_demangled_name<Char>(out, typeid(ex));
*out++ = ':';
*out++ = ' ';
}
#endif
return detail::write_bytes<Char>(out, string_view(ex.what()));
}
};
namespace detail {
template <typename T, typename Enable = void>
struct has_flip : std::false_type {};
template <typename T>
struct has_flip<T, void_t<decltype(std::declval<T>().flip())>>
: std::true_type {};
template <typename T> struct is_bit_reference_like {
static constexpr const bool value =
std::is_convertible<T, bool>::value &&
std::is_nothrow_assignable<T, bool>::value && has_flip<T>::value;
};
#ifdef _LIBCPP_VERSION
// Workaround for libc++ incompatibility with C++ standard.
// According to the Standard, `bitset::operator[] const` returns bool.
template <typename C>
struct is_bit_reference_like<std::__bit_const_reference<C>> {
static constexpr const bool value = true;
};
#endif
} // namespace detail
// We can't use std::vector<bool, Allocator>::reference and
// std::bitset<N>::reference because the compiler can't deduce Allocator and N
// in partial specialization.
template <typename BitRef, typename Char>
struct formatter<BitRef, Char,
enable_if_t<detail::is_bit_reference_like<BitRef>::value>>
: formatter<bool, Char> {
template <typename FormatContext>
FMT_CONSTEXPR auto format(const BitRef& v, FormatContext& ctx) const
-> decltype(ctx.out()) {
return formatter<bool, Char>::format(v, ctx);
}
};
template <typename T, typename Deleter>
auto ptr(const std::unique_ptr<T, Deleter>& p) -> const void* {
return p.get();
}
template <typename T> auto ptr(const std::shared_ptr<T>& p) -> const void* {
return p.get();
}
template <typename T, typename Char>
struct formatter<std::atomic<T>, Char,
enable_if_t<is_formattable<T, Char>::value>>
: formatter<T, Char> {
template <typename FormatContext>
auto format(const std::atomic<T>& v, FormatContext& ctx) const
-> decltype(ctx.out()) {
return formatter<T, Char>::format(v.load(), ctx);
}
};
#ifdef __cpp_lib_atomic_flag_test
template <typename Char>
struct formatter<std::atomic_flag, Char> : formatter<bool, Char> {
template <typename FormatContext>
auto format(const std::atomic_flag& v, FormatContext& ctx) const
-> decltype(ctx.out()) {
return formatter<bool, Char>::format(v.test(), ctx);
}
};
#endif // __cpp_lib_atomic_flag_test
template <typename T, typename Char> struct formatter<std::complex<T>, Char> {
private:
detail::dynamic_format_specs<Char> specs_;
template <typename FormatContext, typename OutputIt>
FMT_CONSTEXPR auto do_format(const std::complex<T>& c,
detail::dynamic_format_specs<Char>& specs,
FormatContext& ctx, OutputIt out) const
-> OutputIt {
if (c.real() != 0) {
*out++ = Char('(');
out = detail::write<Char>(out, c.real(), specs, ctx.locale());
specs.set_sign(sign::plus);
out = detail::write<Char>(out, c.imag(), specs, ctx.locale());
if (!detail::isfinite(c.imag())) *out++ = Char(' ');
*out++ = Char('i');
*out++ = Char(')');
return out;
}
out = detail::write<Char>(out, c.imag(), specs, ctx.locale());
if (!detail::isfinite(c.imag())) *out++ = Char(' ');
*out++ = Char('i');
return out;
}
public:
FMT_CONSTEXPR auto parse(parse_context<Char>& ctx) -> const Char* {
if (ctx.begin() == ctx.end() || *ctx.begin() == '}') return ctx.begin();
return parse_format_specs(ctx.begin(), ctx.end(), specs_, ctx,
detail::type_constant<T, Char>::value);
}
template <typename FormatContext>
auto format(const std::complex<T>& c, FormatContext& ctx) const
-> decltype(ctx.out()) {
auto specs = specs_;
if (specs.dynamic()) {
detail::handle_dynamic_spec(specs.dynamic_width(), specs.width,
specs.width_ref, ctx);
detail::handle_dynamic_spec(specs.dynamic_precision(), specs.precision,
specs.precision_ref, ctx);
}
if (specs.width == 0) return do_format(c, specs, ctx, ctx.out());
auto buf = basic_memory_buffer<Char>();
auto outer_specs = format_specs();
outer_specs.width = specs.width;
outer_specs.copy_fill_from(specs);
outer_specs.set_align(specs.align());
specs.width = 0;
specs.set_fill({});
specs.set_align(align::none);
do_format(c, specs, ctx, basic_appender<Char>(buf));
return detail::write<Char>(ctx.out(),
basic_string_view<Char>(buf.data(), buf.size()),
outer_specs);
}
};
template <typename T, typename Char>
struct formatter<std::reference_wrapper<T>, Char,
enable_if_t<is_formattable<remove_cvref_t<T>, Char>::value>>
: formatter<remove_cvref_t<T>, Char> {
template <typename FormatContext>
auto format(std::reference_wrapper<T> ref, FormatContext& ctx) const
-> decltype(ctx.out()) {
return formatter<remove_cvref_t<T>, Char>::format(ref.get(), ctx);
}
};
FMT_END_NAMESPACE
#endif // FMT_STD_H_
third_party/fmt/include/fmt/xchar.h
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// Formatting library for C++ - optional wchar_t and exotic character support
//
// Copyright (c) 2012 - present, Victor Zverovich
// All rights reserved.
//
// For the license information refer to format.h.
#ifndef FMT_XCHAR_H_
#define FMT_XCHAR_H_
#include "color.h"
#include "format.h"
#include "ostream.h"
#include "ranges.h"
#ifndef FMT_MODULE
# include <cwchar>
# if FMT_USE_LOCALE
# include <locale>
# endif
#endif
FMT_BEGIN_NAMESPACE
namespace detail {
template <typename T>
using is_exotic_char = bool_constant<!std::is_same<T, char>::value>;
template <typename S, typename = void> struct format_string_char {};
template <typename S>
struct format_string_char<
S, void_t<decltype(sizeof(detail::to_string_view(std::declval<S>())))>> {
using type = char_t<S>;
};
template <typename S>
struct format_string_char<
S, enable_if_t<std::is_base_of<detail::compile_string, S>::value>> {
using type = typename S::char_type;
};
template <typename S>
using format_string_char_t = typename format_string_char<S>::type;
inline auto write_loc(basic_appender<wchar_t> out, loc_value value,
const format_specs& specs, locale_ref loc) -> bool {
#if FMT_USE_LOCALE
auto& numpunct =
std::use_facet<std::numpunct<wchar_t>>(loc.get<std::locale>());
auto separator = std::wstring();
auto grouping = numpunct.grouping();
if (!grouping.empty()) separator = std::wstring(1, numpunct.thousands_sep());
return value.visit(loc_writer<wchar_t>{out, specs, separator, grouping, {}});
#endif
return false;
}
} // namespace detail
FMT_BEGIN_EXPORT
using wstring_view = basic_string_view<wchar_t>;
using wformat_parse_context = parse_context<wchar_t>;
using wformat_context = buffered_context<wchar_t>;
using wformat_args = basic_format_args<wformat_context>;
using wmemory_buffer = basic_memory_buffer<wchar_t>;
template <typename Char, typename... T> struct basic_fstring {
private:
basic_string_view<Char> str_;
static constexpr int num_static_named_args =
detail::count_static_named_args<T...>();
using checker = detail::format_string_checker<
Char, static_cast<int>(sizeof...(T)), num_static_named_args,
num_static_named_args != detail::count_named_args<T...>()>;
using arg_pack = detail::arg_pack<T...>;
public:
using t = basic_fstring;
template <typename S,
FMT_ENABLE_IF(
std::is_convertible<const S&, basic_string_view<Char>>::value)>
FMT_CONSTEVAL FMT_ALWAYS_INLINE basic_fstring(const S& s) : str_(s) {
if (FMT_USE_CONSTEVAL)
detail::parse_format_string<Char>(s, checker(s, arg_pack()));
}
template <typename S,
FMT_ENABLE_IF(std::is_base_of<detail::compile_string, S>::value&&
std::is_same<typename S::char_type, Char>::value)>
FMT_ALWAYS_INLINE basic_fstring(const S&) : str_(S()) {
FMT_CONSTEXPR auto sv = basic_string_view<Char>(S());
FMT_CONSTEXPR int ignore =
(parse_format_string(sv, checker(sv, arg_pack())), 0);
detail::ignore_unused(ignore);
}
basic_fstring(runtime_format_string<Char> fmt) : str_(fmt.str) {}
operator basic_string_view<Char>() const { return str_; }
auto get() const -> basic_string_view<Char> { return str_; }
};
template <typename Char, typename... T>
using basic_format_string = basic_fstring<Char, T...>;
template <typename... T>
using wformat_string = typename basic_format_string<wchar_t, T...>::t;
inline auto runtime(wstring_view s) -> runtime_format_string<wchar_t> {
return {{s}};
}
#ifdef __cpp_char8_t
template <> struct is_char<char8_t> : bool_constant<detail::is_utf8_enabled> {};
#endif
template <typename... T>
constexpr auto make_wformat_args(T&... args)
-> decltype(fmt::make_format_args<wformat_context>(args...)) {
return fmt::make_format_args<wformat_context>(args...);
}
#if !FMT_USE_NONTYPE_TEMPLATE_ARGS
inline namespace literals {
inline auto operator""_a(const wchar_t* s, size_t) -> detail::udl_arg<wchar_t> {
return {s};
}
} // namespace literals
#endif
template <typename It, typename Sentinel>
auto join(It begin, Sentinel end, wstring_view sep)
-> join_view<It, Sentinel, wchar_t> {
return {begin, end, sep};
}
template <typename Range, FMT_ENABLE_IF(!is_tuple_like<Range>::value)>
auto join(Range&& range, wstring_view sep)
-> join_view<decltype(std::begin(range)), decltype(std::end(range)),
wchar_t> {
return join(std::begin(range), std::end(range), sep);
}
template <typename T>
auto join(std::initializer_list<T> list, wstring_view sep)
-> join_view<const T*, const T*, wchar_t> {
return join(std::begin(list), std::end(list), sep);
}
template <typename Tuple, FMT_ENABLE_IF(is_tuple_like<Tuple>::value)>
auto join(const Tuple& tuple, basic_string_view<wchar_t> sep)
-> tuple_join_view<wchar_t, Tuple> {
return {tuple, sep};
}
template <typename Char, FMT_ENABLE_IF(!std::is_same<Char, char>::value)>
auto vformat(basic_string_view<Char> fmt,
typename detail::vformat_args<Char>::type args)
-> std::basic_string<Char> {
auto buf = basic_memory_buffer<Char>();
detail::vformat_to(buf, fmt, args);
return {buf.data(), buf.size()};
}
template <typename... T>
auto format(wformat_string<T...> fmt, T&&... args) -> std::wstring {
return vformat(fmt::wstring_view(fmt), fmt::make_wformat_args(args...));
}
template <typename OutputIt, typename... T>
auto format_to(OutputIt out, wformat_string<T...> fmt, T&&... args)
-> OutputIt {
return vformat_to(out, fmt::wstring_view(fmt),
fmt::make_wformat_args(args...));
}
// Pass char_t as a default template parameter instead of using
// std::basic_string<char_t<S>> to reduce the symbol size.
template <typename S, typename... T,
typename Char = detail::format_string_char_t<S>,
FMT_ENABLE_IF(!std::is_same<Char, char>::value &&
!std::is_same<Char, wchar_t>::value)>
auto format(const S& fmt, T&&... args) -> std::basic_string<Char> {
return vformat(detail::to_string_view(fmt),
fmt::make_format_args<buffered_context<Char>>(args...));
}
template <typename Locale, typename S,
typename Char = detail::format_string_char_t<S>,
FMT_ENABLE_IF(detail::is_locale<Locale>::value&&
detail::is_exotic_char<Char>::value)>
inline auto vformat(const Locale& loc, const S& fmt,
typename detail::vformat_args<Char>::type args)
-> std::basic_string<Char> {
auto buf = basic_memory_buffer<Char>();
detail::vformat_to(buf, detail::to_string_view(fmt), args,
detail::locale_ref(loc));
return {buf.data(), buf.size()};
}
template <typename Locale, typename S, typename... T,
typename Char = detail::format_string_char_t<S>,
FMT_ENABLE_IF(detail::is_locale<Locale>::value&&
detail::is_exotic_char<Char>::value)>
inline auto format(const Locale& loc, const S& fmt, T&&... args)
-> std::basic_string<Char> {
return vformat(loc, detail::to_string_view(fmt),
fmt::make_format_args<buffered_context<Char>>(args...));
}
template <typename OutputIt, typename S,
typename Char = detail::format_string_char_t<S>,
FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value&&
detail::is_exotic_char<Char>::value)>
auto vformat_to(OutputIt out, const S& fmt,
typename detail::vformat_args<Char>::type args) -> OutputIt {
auto&& buf = detail::get_buffer<Char>(out);
detail::vformat_to(buf, detail::to_string_view(fmt), args);
return detail::get_iterator(buf, out);
}
template <typename OutputIt, typename S, typename... T,
typename Char = detail::format_string_char_t<S>,
FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value &&
!std::is_same<Char, char>::value &&
!std::is_same<Char, wchar_t>::value)>
inline auto format_to(OutputIt out, const S& fmt, T&&... args) -> OutputIt {
return vformat_to(out, detail::to_string_view(fmt),
fmt::make_format_args<buffered_context<Char>>(args...));
}
template <typename Locale, typename S, typename OutputIt, typename... Args,
typename Char = detail::format_string_char_t<S>,
FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value&&
detail::is_locale<Locale>::value&&
detail::is_exotic_char<Char>::value)>
inline auto vformat_to(OutputIt out, const Locale& loc, const S& fmt,
typename detail::vformat_args<Char>::type args)
-> OutputIt {
auto&& buf = detail::get_buffer<Char>(out);
vformat_to(buf, detail::to_string_view(fmt), args, detail::locale_ref(loc));
return detail::get_iterator(buf, out);
}
template <typename Locale, typename OutputIt, typename S, typename... T,
typename Char = detail::format_string_char_t<S>,
bool enable = detail::is_output_iterator<OutputIt, Char>::value &&
detail::is_locale<Locale>::value &&
detail::is_exotic_char<Char>::value>
inline auto format_to(OutputIt out, const Locale& loc, const S& fmt,
T&&... args) ->
typename std::enable_if<enable, OutputIt>::type {
return vformat_to(out, loc, detail::to_string_view(fmt),
fmt::make_format_args<buffered_context<Char>>(args...));
}
template <typename OutputIt, typename Char, typename... Args,
FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value&&
detail::is_exotic_char<Char>::value)>
inline auto vformat_to_n(OutputIt out, size_t n, basic_string_view<Char> fmt,
typename detail::vformat_args<Char>::type args)
-> format_to_n_result<OutputIt> {
using traits = detail::fixed_buffer_traits;
auto buf = detail::iterator_buffer<OutputIt, Char, traits>(out, n);
detail::vformat_to(buf, fmt, args);
return {buf.out(), buf.count()};
}
template <typename OutputIt, typename S, typename... T,
typename Char = detail::format_string_char_t<S>,
FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, Char>::value&&
detail::is_exotic_char<Char>::value)>
inline auto format_to_n(OutputIt out, size_t n, const S& fmt, T&&... args)
-> format_to_n_result<OutputIt> {
return vformat_to_n(out, n, fmt::basic_string_view<Char>(fmt),
fmt::make_format_args<buffered_context<Char>>(args...));
}
template <typename S, typename... T,
typename Char = detail::format_string_char_t<S>,
FMT_ENABLE_IF(detail::is_exotic_char<Char>::value)>
inline auto formatted_size(const S& fmt, T&&... args) -> size_t {
auto buf = detail::counting_buffer<Char>();
detail::vformat_to(buf, detail::to_string_view(fmt),
fmt::make_format_args<buffered_context<Char>>(args...));
return buf.count();
}
inline void vprint(std::FILE* f, wstring_view fmt, wformat_args args) {
auto buf = wmemory_buffer();
detail::vformat_to(buf, fmt, args);
buf.push_back(L'\0');
if (std::fputws(buf.data(), f) == -1)
FMT_THROW(system_error(errno, FMT_STRING("cannot write to file")));
}
inline void vprint(wstring_view fmt, wformat_args args) {
vprint(stdout, fmt, args);
}
template <typename... T>
void print(std::FILE* f, wformat_string<T...> fmt, T&&... args) {
return vprint(f, wstring_view(fmt), fmt::make_wformat_args(args...));
}
template <typename... T> void print(wformat_string<T...> fmt, T&&... args) {
return vprint(wstring_view(fmt), fmt::make_wformat_args(args...));
}
template <typename... T>
void println(std::FILE* f, wformat_string<T...> fmt, T&&... args) {
return print(f, L"{}\n", fmt::format(fmt, std::forward<T>(args)...));
}
template <typename... T> void println(wformat_string<T...> fmt, T&&... args) {
return print(L"{}\n", fmt::format(fmt, std::forward<T>(args)...));
}
inline auto vformat(text_style ts, wstring_view fmt, wformat_args args)
-> std::wstring {
auto buf = wmemory_buffer();
detail::vformat_to(buf, ts, fmt, args);
return {buf.data(), buf.size()};
}
template <typename... T>
inline auto format(text_style ts, wformat_string<T...> fmt, T&&... args)
-> std::wstring {
return fmt::vformat(ts, fmt, fmt::make_wformat_args(args...));
}
template <typename... T>
FMT_DEPRECATED void print(std::FILE* f, text_style ts, wformat_string<T...> fmt,
const T&... args) {
vprint(f, ts, fmt, fmt::make_wformat_args(args...));
}
template <typename... T>
FMT_DEPRECATED void print(text_style ts, wformat_string<T...> fmt,
const T&... args) {
return print(stdout, ts, fmt, args...);
}
inline void vprint(std::wostream& os, wstring_view fmt, wformat_args args) {
auto buffer = basic_memory_buffer<wchar_t>();
detail::vformat_to(buffer, fmt, args);
detail::write_buffer(os, buffer);
}
template <typename... T>
void print(std::wostream& os, wformat_string<T...> fmt, T&&... args) {
vprint(os, fmt, fmt::make_format_args<buffered_context<wchar_t>>(args...));
}
template <typename... T>
void println(std::wostream& os, wformat_string<T...> fmt, T&&... args) {
print(os, L"{}\n", fmt::format(fmt, std::forward<T>(args)...));
}
/// Converts `value` to `std::wstring` using the default format for type `T`.
template <typename T> inline auto to_wstring(const T& value) -> std::wstring {
return format(FMT_STRING(L"{}"), value);
}
FMT_END_EXPORT
FMT_END_NAMESPACE
#endif // FMT_XCHAR_H_
third_party/fmt/src/fmt.cc
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module;
#define FMT_MODULE
#ifdef _MSVC_LANG
# define FMT_CPLUSPLUS _MSVC_LANG
#else
# define FMT_CPLUSPLUS __cplusplus
#endif
// Put all implementation-provided headers into the global module fragment
// to prevent attachment to this module.
#ifndef FMT_IMPORT_STD
# include <algorithm>
# include <bitset>
# include <chrono>
# include <cmath>
# include <complex>
# include <cstddef>
# include <cstdint>
# include <cstdio>
# include <cstdlib>
# include <cstring>
# include <ctime>
# include <exception>
# if FMT_CPLUSPLUS > 202002L
# include <expected>
# endif
# include <filesystem>
# include <fstream>
# include <functional>
# include <iterator>
# include <limits>
# include <locale>
# include <memory>
# include <optional>
# include <ostream>
# include <source_location>
# include <stdexcept>
# include <string>
# include <string_view>
# include <system_error>
# include <thread>
# include <type_traits>
# include <typeinfo>
# include <utility>
# include <variant>
# include <vector>
#else
# include <limits.h>
# include <stdint.h>
# include <stdio.h>
# include <time.h>
#endif
#include <cerrno>
#include <climits>
#include <version>
#if __has_include(<cxxabi.h>)
# include <cxxabi.h>
#endif
#if defined(_MSC_VER) || defined(__MINGW32__)
# include <intrin.h>
#endif
#if defined __APPLE__ || defined(__FreeBSD__)
# include <xlocale.h>
#endif
#if __has_include(<winapifamily.h>)
# include <winapifamily.h>
#endif
#if (__has_include(<fcntl.h>) || defined(__APPLE__) || \
defined(__linux__)) && \
(!defined(WINAPI_FAMILY) || (WINAPI_FAMILY == WINAPI_FAMILY_DESKTOP_APP))
# include <fcntl.h>
# include <sys/stat.h>
# include <sys/types.h>
# ifndef _WIN32
# include <unistd.h>
# else
# include <io.h>
# endif
#endif
#ifdef _WIN32
# if defined(__GLIBCXX__)
# include <ext/stdio_filebuf.h>
# include <ext/stdio_sync_filebuf.h>
# endif
# define WIN32_LEAN_AND_MEAN
# include <windows.h>
#endif
export module fmt;
#ifdef FMT_IMPORT_STD
import std;
#endif
#define FMT_EXPORT export
#define FMT_BEGIN_EXPORT export {
#define FMT_END_EXPORT }
// If you define FMT_ATTACH_TO_GLOBAL_MODULE
// - all declarations are detached from module 'fmt'
// - the module behaves like a traditional static library, too
// - all library symbols are mangled traditionally
// - you can mix TUs with either importing or #including the {fmt} API
#ifdef FMT_ATTACH_TO_GLOBAL_MODULE
extern "C++" {
#endif
#ifndef FMT_OS
# define FMT_OS 1
#endif
// All library-provided declarations and definitions must be in the module
// purview to be exported.
#include "fmt/args.h"
#include "fmt/chrono.h"
#include "fmt/color.h"
#include "fmt/compile.h"
#include "fmt/format.h"
#if FMT_OS
# include "fmt/os.h"
#endif
#include "fmt/ostream.h"
#include "fmt/printf.h"
#include "fmt/ranges.h"
#include "fmt/std.h"
#include "fmt/xchar.h"
#ifdef FMT_ATTACH_TO_GLOBAL_MODULE
}
#endif
// gcc doesn't yet implement private module fragments
#if !FMT_GCC_VERSION
module :private;
#endif
#ifdef FMT_ATTACH_TO_GLOBAL_MODULE
extern "C++" {
#endif
#if FMT_HAS_INCLUDE("format.cc")
# include "format.cc"
#endif
#if FMT_OS && FMT_HAS_INCLUDE("os.cc")
# include "os.cc"
#endif
#ifdef FMT_ATTACH_TO_GLOBAL_MODULE
}
#endif
third_party/fmt/src/format.cc
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// Formatting library for C++
//
// Copyright (c) 2012 - 2016, Victor Zverovich
// All rights reserved.
//
// For the license information refer to format.h.
#include "fmt/format-inl.h"
FMT_BEGIN_NAMESPACE
namespace detail {
template FMT_API auto dragonbox::to_decimal(float x) noexcept
-> dragonbox::decimal_fp<float>;
template FMT_API auto dragonbox::to_decimal(double x) noexcept
-> dragonbox::decimal_fp<double>;
#if FMT_USE_LOCALE
// DEPRECATED! locale_ref in the detail namespace
template FMT_API locale_ref::locale_ref(const std::locale& loc);
template FMT_API auto locale_ref::get<std::locale>() const -> std::locale;
#endif
// Explicit instantiations for char.
template FMT_API auto thousands_sep_impl(locale_ref)
-> thousands_sep_result<char>;
template FMT_API auto decimal_point_impl(locale_ref) -> char;
// DEPRECATED!
template FMT_API void buffer<char>::append(const char*, const char*);
// DEPRECATED!
template FMT_API void vformat_to(buffer<char>&, string_view,
typename vformat_args<>::type, locale_ref);
// Explicit instantiations for wchar_t.
template FMT_API auto thousands_sep_impl(locale_ref)
-> thousands_sep_result<wchar_t>;
template FMT_API auto decimal_point_impl(locale_ref) -> wchar_t;
template FMT_API void buffer<wchar_t>::append(const wchar_t*, const wchar_t*);
} // namespace detail
FMT_END_NAMESPACE
third_party/fmt/src/os.cc
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// Formatting library for C++ - optional OS-specific functionality
//
// Copyright (c) 2012 - 2016, Victor Zverovich
// All rights reserved.
//
// For the license information refer to format.h.
// Disable bogus MSVC warnings.
#if !defined(_CRT_SECURE_NO_WARNINGS) && defined(_MSC_VER)
# define _CRT_SECURE_NO_WARNINGS
#endif
#include "fmt/os.h"
#ifndef FMT_MODULE
# include <climits>
# if FMT_USE_FCNTL
# include <sys/stat.h>
# include <sys/types.h>
# ifdef _WRS_KERNEL // VxWorks7 kernel
# include <ioLib.h> // getpagesize
# endif
# ifndef _WIN32
# include <unistd.h>
# else
# ifndef WIN32_LEAN_AND_MEAN
# define WIN32_LEAN_AND_MEAN
# endif
# include <io.h>
# endif // _WIN32
# endif // FMT_USE_FCNTL
# ifdef _WIN32
# include <windows.h>
# endif
#endif
#ifdef _WIN32
# ifndef S_IRUSR
# define S_IRUSR _S_IREAD
# endif
# ifndef S_IWUSR
# define S_IWUSR _S_IWRITE
# endif
# ifndef S_IRGRP
# define S_IRGRP 0
# endif
# ifndef S_IWGRP
# define S_IWGRP 0
# endif
# ifndef S_IROTH
# define S_IROTH 0
# endif
# ifndef S_IWOTH
# define S_IWOTH 0
# endif
#endif
namespace {
#ifdef _WIN32
// Return type of read and write functions.
using rwresult = int;
// On Windows the count argument to read and write is unsigned, so convert
// it from size_t preventing integer overflow.
inline unsigned convert_rwcount(std::size_t count) {
return count <= UINT_MAX ? static_cast<unsigned>(count) : UINT_MAX;
}
#elif FMT_USE_FCNTL
// Return type of read and write functions.
using rwresult = ssize_t;
inline std::size_t convert_rwcount(std::size_t count) { return count; }
#endif
} // namespace
FMT_BEGIN_NAMESPACE
#ifdef _WIN32
namespace detail {
class system_message {
system_message(const system_message&) = delete;
void operator=(const system_message&) = delete;
unsigned long result_;
wchar_t* message_;
static bool is_whitespace(wchar_t c) noexcept {
return c == L' ' || c == L'\n' || c == L'\r' || c == L'\t' || c == L'\0';
}
public:
explicit system_message(unsigned long error_code)
: result_(0), message_(nullptr) {
result_ = FormatMessageW(
FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
nullptr, error_code, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
reinterpret_cast<wchar_t*>(&message_), 0, nullptr);
if (result_ != 0) {
while (result_ != 0 && is_whitespace(message_[result_ - 1])) {
--result_;
}
}
}
~system_message() { LocalFree(message_); }
explicit operator bool() const noexcept { return result_ != 0; }
operator basic_string_view<wchar_t>() const noexcept {
return basic_string_view<wchar_t>(message_, result_);
}
};
class utf8_system_category final : public std::error_category {
public:
const char* name() const noexcept override { return "system"; }
std::string message(int error_code) const override {
auto&& msg = system_message(error_code);
if (msg) {
auto utf8_message = to_utf8<wchar_t>();
if (utf8_message.convert(msg)) {
return utf8_message.str();
}
}
return "unknown error";
}
};
} // namespace detail
FMT_API const std::error_category& system_category() noexcept {
static const detail::utf8_system_category category;
return category;
}
std::system_error vwindows_error(int err_code, string_view format_str,
format_args args) {
auto ec = std::error_code(err_code, system_category());
return std::system_error(ec, vformat(format_str, args));
}
void detail::format_windows_error(detail::buffer<char>& out, int error_code,
const char* message) noexcept {
FMT_TRY {
auto&& msg = system_message(error_code);
if (msg) {
auto utf8_message = to_utf8<wchar_t>();
if (utf8_message.convert(msg)) {
fmt::format_to(appender(out), FMT_STRING("{}: {}"), message,
string_view(utf8_message));
return;
}
}
}
FMT_CATCH(...) {}
format_error_code(out, error_code, message);
}
void report_windows_error(int error_code, const char* message) noexcept {
do_report_error(detail::format_windows_error, error_code, message);
}
#endif // _WIN32
buffered_file::~buffered_file() noexcept {
if (file_ && FMT_SYSTEM(fclose(file_)) != 0)
report_system_error(errno, "cannot close file");
}
buffered_file::buffered_file(cstring_view filename, cstring_view mode) {
FMT_RETRY_VAL(file_, FMT_SYSTEM(fopen(filename.c_str(), mode.c_str())),
nullptr);
if (!file_)
FMT_THROW(system_error(errno, FMT_STRING("cannot open file {}"),
filename.c_str()));
}
void buffered_file::close() {
if (!file_) return;
int result = FMT_SYSTEM(fclose(file_));
file_ = nullptr;
if (result != 0)
FMT_THROW(system_error(errno, FMT_STRING("cannot close file")));
}
int buffered_file::descriptor() const {
#ifdef FMT_HAS_SYSTEM
// fileno is a macro on OpenBSD.
# ifdef fileno
# undef fileno
# endif
int fd = FMT_POSIX_CALL(fileno(file_));
#elif defined(_WIN32)
int fd = _fileno(file_);
#else
int fd = fileno(file_);
#endif
if (fd == -1)
FMT_THROW(system_error(errno, FMT_STRING("cannot get file descriptor")));
return fd;
}
#if FMT_USE_FCNTL
# ifdef _WIN32
using mode_t = int;
# endif
constexpr mode_t default_open_mode =
S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH;
file::file(cstring_view path, int oflag) {
# if defined(_WIN32) && !defined(__MINGW32__)
fd_ = -1;
auto converted = detail::utf8_to_utf16(string_view(path.c_str()));
*this = file::open_windows_file(converted.c_str(), oflag);
# else
FMT_RETRY(fd_, FMT_POSIX_CALL(open(path.c_str(), oflag, default_open_mode)));
if (fd_ == -1)
FMT_THROW(
system_error(errno, FMT_STRING("cannot open file {}"), path.c_str()));
# endif
}
file::~file() noexcept {
// Don't retry close in case of EINTR!
// See http://linux.derkeiler.com/Mailing-Lists/Kernel/2005-09/3000.html
if (fd_ != -1 && FMT_POSIX_CALL(close(fd_)) != 0)
report_system_error(errno, "cannot close file");
}
void file::close() {
if (fd_ == -1) return;
// Don't retry close in case of EINTR!
// See http://linux.derkeiler.com/Mailing-Lists/Kernel/2005-09/3000.html
int result = FMT_POSIX_CALL(close(fd_));
fd_ = -1;
if (result != 0)
FMT_THROW(system_error(errno, FMT_STRING("cannot close file")));
}
long long file::size() const {
# ifdef _WIN32
// Use GetFileSize instead of GetFileSizeEx for the case when _WIN32_WINNT
// is less than 0x0500 as is the case with some default MinGW builds.
// Both functions support large file sizes.
DWORD size_upper = 0;
HANDLE handle = reinterpret_cast<HANDLE>(_get_osfhandle(fd_));
DWORD size_lower = FMT_SYSTEM(GetFileSize(handle, &size_upper));
if (size_lower == INVALID_FILE_SIZE) {
DWORD error = GetLastError();
if (error != NO_ERROR)
FMT_THROW(windows_error(GetLastError(), "cannot get file size"));
}
unsigned long long long_size = size_upper;
return (long_size << sizeof(DWORD) * CHAR_BIT) | size_lower;
# else
using Stat = struct stat;
Stat file_stat = Stat();
if (FMT_POSIX_CALL(fstat(fd_, &file_stat)) == -1)
FMT_THROW(system_error(errno, FMT_STRING("cannot get file attributes")));
static_assert(sizeof(long long) >= sizeof(file_stat.st_size),
"return type of file::size is not large enough");
return file_stat.st_size;
# endif
}
std::size_t file::read(void* buffer, std::size_t count) {
rwresult result = 0;
FMT_RETRY(result, FMT_POSIX_CALL(read(fd_, buffer, convert_rwcount(count))));
if (result < 0)
FMT_THROW(system_error(errno, FMT_STRING("cannot read from file")));
return detail::to_unsigned(result);
}
std::size_t file::write(const void* buffer, std::size_t count) {
rwresult result = 0;
FMT_RETRY(result, FMT_POSIX_CALL(write(fd_, buffer, convert_rwcount(count))));
if (result < 0)
FMT_THROW(system_error(errno, FMT_STRING("cannot write to file")));
return detail::to_unsigned(result);
}
file file::dup(int fd) {
// Don't retry as dup doesn't return EINTR.
// http://pubs.opengroup.org/onlinepubs/009695399/functions/dup.html
int new_fd = FMT_POSIX_CALL(dup(fd));
if (new_fd == -1)
FMT_THROW(system_error(
errno, FMT_STRING("cannot duplicate file descriptor {}"), fd));
return file(new_fd);
}
void file::dup2(int fd) {
int result = 0;
FMT_RETRY(result, FMT_POSIX_CALL(dup2(fd_, fd)));
if (result == -1) {
FMT_THROW(system_error(
errno, FMT_STRING("cannot duplicate file descriptor {} to {}"), fd_,
fd));
}
}
void file::dup2(int fd, std::error_code& ec) noexcept {
int result = 0;
FMT_RETRY(result, FMT_POSIX_CALL(dup2(fd_, fd)));
if (result == -1) ec = std::error_code(errno, std::generic_category());
}
buffered_file file::fdopen(const char* mode) {
// Don't retry as fdopen doesn't return EINTR.
# if defined(__MINGW32__) && defined(_POSIX_)
FILE* f = ::fdopen(fd_, mode);
# else
FILE* f = FMT_POSIX_CALL(fdopen(fd_, mode));
# endif
if (!f) {
FMT_THROW(system_error(
errno, FMT_STRING("cannot associate stream with file descriptor")));
}
buffered_file bf(f);
fd_ = -1;
return bf;
}
# if defined(_WIN32) && !defined(__MINGW32__)
file file::open_windows_file(wcstring_view path, int oflag) {
int fd = -1;
auto err = _wsopen_s(&fd, path.c_str(), oflag, _SH_DENYNO, default_open_mode);
if (fd == -1) {
FMT_THROW(system_error(err, FMT_STRING("cannot open file {}"),
detail::to_utf8<wchar_t>(path.c_str()).c_str()));
}
return file(fd);
}
# endif
pipe::pipe() {
int fds[2] = {};
# ifdef _WIN32
// Make the default pipe capacity same as on Linux 2.6.11+.
enum { DEFAULT_CAPACITY = 65536 };
int result = FMT_POSIX_CALL(pipe(fds, DEFAULT_CAPACITY, _O_BINARY));
# else
// Don't retry as the pipe function doesn't return EINTR.
// http://pubs.opengroup.org/onlinepubs/009696799/functions/pipe.html
int result = FMT_POSIX_CALL(pipe(fds));
# endif
if (result != 0)
FMT_THROW(system_error(errno, FMT_STRING("cannot create pipe")));
// The following assignments don't throw.
read_end = file(fds[0]);
write_end = file(fds[1]);
}
# if !defined(__MSDOS__)
long getpagesize() {
# ifdef _WIN32
SYSTEM_INFO si;
GetSystemInfo(&si);
return si.dwPageSize;
# else
# ifdef _WRS_KERNEL
long size = FMT_POSIX_CALL(getpagesize());
# else
long size = FMT_POSIX_CALL(sysconf(_SC_PAGESIZE));
# endif
if (size < 0)
FMT_THROW(system_error(errno, FMT_STRING("cannot get memory page size")));
return size;
# endif
}
# endif
void ostream::grow(buffer<char>& buf, size_t) {
if (buf.size() == buf.capacity()) static_cast<ostream&>(buf).flush();
}
ostream::ostream(cstring_view path, const detail::ostream_params& params)
: buffer<char>(grow), file_(path, params.oflag) {
set(new char[params.buffer_size], params.buffer_size);
}
ostream::ostream(ostream&& other) noexcept
: buffer<char>(grow, other.data(), other.size(), other.capacity()),
file_(std::move(other.file_)) {
other.clear();
other.set(nullptr, 0);
}
ostream::~ostream() {
flush();
delete[] data();
}
#endif // FMT_USE_FCNTL
FMT_END_NAMESPACE
third_party/vma/.gitignore
-4
View File
@@ -1,4 +0,0 @@
/bin/*
/build/*
!/bin/VmaSample_Release_vs2019.exe
!/bin/Shader*.spv
third_party/vma/.travis.yml
Vendored
-37
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@@ -1,37 +0,0 @@
language: cpp
sudo: required
os: linux
dist: bionic
branches:
only:
- master
compiler:
- clang
- gcc
before_script:
- sudo apt-get install
- eval "${MATRIX_EVAL}"
install:
- sudo apt-get -qq update
- sudo apt-get install -y libassimp-dev libglm-dev graphviz libxcb-dri3-0 libxcb-present0 libpciaccess0 cmake libpng-dev libxcb-dri3-dev libx11-dev libx11-xcb-dev libmirclient-dev libwayland-dev libxrandr-dev
- export VK_VERSION=1.2.189.0
- wget -O vulkansdk-linux-x86_64-$VK_VERSION.tar.gz https://sdk.lunarg.com/sdk/download/$VK_VERSION/linux/vulkansdk-linux-x86_64-$VK_VERSION.tar.gz?Human=true
- tar zxf vulkansdk-linux-x86_64-$VK_VERSION.tar.gz
- export VULKAN_SDK=$TRAVIS_BUILD_DIR/$VK_VERSION/x86_64
script:
- mkdir -p build
- cd build
- cmake ..
- make
notifications:
email:
recipients:
- adam.sawicki@amd.com
on_success: change
on_failure: always
third_party/vma/CHANGELOG.md
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-179
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@@ -1,179 +0,0 @@
# 3.0.1 (2022-05-26)
- Fixes in defragmentation algorithm.
- Fixes in GpuMemDumpVis.py regarding image height calculation.
- Other bug fixes, optimizations, and improvements in the code and documentation.
# 3.0.0 (2022-03-25)
It has been a long time since the previous official release, so hopefully everyone has been using the latest code from "master" branch, which is always maintained in a good state, not the old version. For completeness, here is the list of changes since v2.3.0. The major version number has changed, so there are some compatibility-breaking changes, but the basic API stays the same and is mostly backward-compatible.
Major features added (some compatibility-breaking):
- Added new API for selecting preferred memory type: flags `VMA_MEMORY_USAGE_AUTO`, `VMA_MEMORY_USAGE_AUTO_PREFER_DEVICE`, `VMA_MEMORY_USAGE_AUTO_PREFER_HOST`, `VMA_ALLOCATION_CREATE_HOST_ACCESS_SEQUENTIAL_WRITE_BIT`, `VMA_ALLOCATION_CREATE_HOST_ACCESS_RANDOM_BIT`, `VMA_ALLOCATION_CREATE_HOST_ACCESS_ALLOW_TRANSFER_INSTEAD_BIT`. Old values like `VMA_MEMORY_USAGE_GPU_ONLY` still work as before, for backward compatibility, but are not recommended.
- Added new defragmentation API and algorithm, replacing the old one. See structure `VmaDefragmentationInfo`, `VmaDefragmentationMove`, `VmaDefragmentationPassMoveInfo`, `VmaDefragmentationStats`, function `vmaBeginDefragmentation`, `vmaEndDefragmentation`, `vmaBeginDefragmentationPass`, `vmaEndDefragmentationPass`.
- Redesigned API for statistics, replacing the old one. See structures: `VmaStatistics`, `VmaDetailedStatistics`, `VmaTotalStatistics`. `VmaBudget`, functions: `vmaGetHeapBudgets`, `vmaCalculateStatistics`, `vmaGetPoolStatistics`, `vmaCalculatePoolStatistics`, `vmaGetVirtualBlockStatistics`, `vmaCalculateVirtualBlockStatistics`.
- Added "Virtual allocator" feature - possibility to use core allocation algorithms for allocation of custom memory, not necessarily Vulkan device memory. See functions like `vmaCreateVirtualBlock`, `vmaDestroyVirtualBlock` and many more.
- `VmaAllocation` now keeps both `void* pUserData` and `char* pName`. Added function `vmaSetAllocationName`, member `VmaAllocationInfo::pName`. Flag `VMA_ALLOCATION_CREATE_USER_DATA_COPY_STRING_BIT` is now deprecated.
- Clarified and cleaned up various ways of importing Vulkan functions. See macros `VMA_STATIC_VULKAN_FUNCTIONS`, `VMA_DYNAMIC_VULKAN_FUNCTIONS`, structure `VmaVulkanFunctions`. Added members `VmaVulkanFunctions::vkGetInstanceProcAddr`, `vkGetDeviceProcAddr`, which are now required when using `VMA_DYNAMIC_VULKAN_FUNCTIONS`.
Removed (compatibility-breaking):
- Removed whole "lost allocations" feature. Removed from the interface: `VMA_ALLOCATION_CREATE_CAN_BECOME_LOST_BIT`, `VMA_ALLOCATION_CREATE_CAN_MAKE_OTHER_LOST_BIT`, `vmaCreateLostAllocation`, `vmaMakePoolAllocationsLost`, `vmaTouchAllocation`, `VmaAllocatorCreateInfo::frameInUseCount`, `VmaPoolCreateInfo::frameInUseCount`.
- Removed whole "record & replay" feature. Removed from the API: `VmaAllocatorCreateInfo::pRecordSettings`, `VmaRecordSettings`, `VmaRecordFlagBits`, `VmaRecordFlags`. Removed VmaReplay application.
- Removed "buddy" algorithm - removed flag `VMA_POOL_CREATE_BUDDY_ALGORITHM_BIT`.
Minor but compatibility-breaking changes:
- Changes in `ALLOCATION_CREATE_STRATEGY` flags. Removed flags: `VMA_ALLOCATION_CREATE_STRATEGY_MIN_FRAGMENTATION_BIT`, `VMA_ALLOCATION_CREATE_STRATEGY_WORST_FIT_BIT`, `VMA_VIRTUAL_ALLOCATION_CREATE_STRATEGY_MIN_FRAGMENTATION_BIT`, which were aliases to other existing flags.
- Added a member `void* pUserData` to `VmaDeviceMemoryCallbacks`. Updated `PFN_vmaAllocateDeviceMemoryFunction`, `PFN_vmaFreeDeviceMemoryFunction` to use the new `pUserData` member.
- Removed function `vmaResizeAllocation` that was already deprecated.
Other major changes:
- Added new features to custom pools: support for dedicated allocations, new member `VmaPoolCreateInfo::pMemoryAllocateNext`, `minAllocationAlignment`.
- Added support for Vulkan 1.2, 1.3.
- Added support for VK_KHR_buffer_device_address extension - flag `VMA_ALLOCATOR_CREATE_BUFFER_DEVICE_ADDRESS_BIT`.
- Added support for VK_EXT_memory_priority extension - flag `VMA_ALLOCATOR_CREATE_EXT_MEMORY_PRIORITY_BIT`, members `VmaAllocationCreateInfo::priority`, `VmaPoolCreateInfo::priority`.
- Added support for VK_AMD_device_coherent_memory extension - flag `VMA_ALLOCATOR_CREATE_AMD_DEVICE_COHERENT_MEMORY_BIT`.
- Added member `VmaAllocatorCreateInfo::pTypeExternalMemoryHandleTypes`.
- Added function `vmaGetAllocatorInfo`, structure `VmaAllocatorInfo`.
- Added functions `vmaFlushAllocations`, `vmaInvalidateAllocations` for multiple allocations at once.
- Added flag `VMA_ALLOCATION_CREATE_CAN_ALIAS_BIT`.
- Added function `vmaCreateBufferWithAlignment`.
- Added convenience function `vmaGetAllocationMemoryProperties`.
- Added convenience functions: `vmaCreateAliasingBuffer`, `vmaCreateAliasingImage`.
Other minor changes:
- Implemented Two-Level Segregated Fit (TLSF) allocation algorithm, replacing previous default one. It is much faster, especially when freeing many allocations at once or when `bufferImageGranularity` is large.
- Renamed debug macro `VMA_DEBUG_ALIGNMENT` to `VMA_MIN_ALIGNMENT`.
- Added CMake support - CMakeLists.txt files. Removed Premake support.
- Changed `vmaInvalidateAllocation` and `vmaFlushAllocation` to return `VkResult`.
- Added nullability annotations for Clang: `VMA_NULLABLE`, `VMA_NOT_NULL`, `VMA_NULLABLE_NON_DISPATCHABLE`, `VMA_NOT_NULL_NON_DISPATCHABLE`, `VMA_LEN_IF_NOT_NULL`.
- JSON dump format has changed.
- Countless fixes and improvements, including performance optimizations, compatibility with various platforms and compilers, documentation.
# 2.3.0 (2019-12-04)
Major release after a year of development in "master" branch and feature branches. Notable new features: supporting Vulkan 1.1, supporting query for memory budget.
Major changes:
- Added support for Vulkan 1.1.
- Added member `VmaAllocatorCreateInfo::vulkanApiVersion`.
- When Vulkan 1.1 is used, there is no need to enable VK_KHR_dedicated_allocation or VK_KHR_bind_memory2 extensions, as they are promoted to Vulkan itself.
- Added support for query for memory budget and staying within the budget.
- Added function `vmaGetBudget`, structure `VmaBudget`. This can also serve as simple statistics, more efficient than `vmaCalculateStats`.
- By default the budget it is estimated based on memory heap sizes. It may be queried from the system using VK_EXT_memory_budget extension if you use `VMA_ALLOCATOR_CREATE_EXT_MEMORY_BUDGET_BIT` flag and `VmaAllocatorCreateInfo::instance` member.
- Added flag `VMA_ALLOCATION_CREATE_WITHIN_BUDGET_BIT` that fails an allocation if it would exceed the budget.
- Added new memory usage options:
- `VMA_MEMORY_USAGE_CPU_COPY` for memory that is preferably not `DEVICE_LOCAL` but not guaranteed to be `HOST_VISIBLE`.
- `VMA_MEMORY_USAGE_GPU_LAZILY_ALLOCATED` for memory that is `LAZILY_ALLOCATED`.
- Added support for VK_KHR_bind_memory2 extension:
- Added `VMA_ALLOCATION_CREATE_DONT_BIND_BIT` flag that lets you create both buffer/image and allocation, but don't bind them together.
- Added flag `VMA_ALLOCATOR_CREATE_KHR_BIND_MEMORY2_BIT`, functions `vmaBindBufferMemory2`, `vmaBindImageMemory2` that let you specify additional local offset and `pNext` pointer while binding.
- Added functions `vmaSetPoolName`, `vmaGetPoolName` that let you assign string names to custom pools. JSON dump file format and VmaDumpVis tool is updated to show these names.
- Defragmentation is legal only on buffers and images in `VK_IMAGE_TILING_LINEAR`. This is due to the way it is currently implemented in the library and the restrictions of the Vulkan specification. Clarified documentation in this regard. See discussion in #59.
Minor changes:
- Made `vmaResizeAllocation` function deprecated, always returning failure.
- Made changes in the internal algorithm for the choice of memory type. Be careful! You may now get a type that is not `HOST_VISIBLE` or `HOST_COHERENT` if it's not stated as always ensured by some `VMA_MEMORY_USAGE_*` flag.
- Extended VmaReplay application with more detailed statistics printed at the end.
- Added macros `VMA_CALL_PRE`, `VMA_CALL_POST` that let you decorate declarations of all library functions if you want to e.g. export/import them as dynamically linked library.
- Optimized `VmaAllocation` objects to be allocated out of an internal free-list allocator. This makes allocation and deallocation causing 0 dynamic CPU heap allocations on average.
- Updated recording CSV file format version to 1.8, to support new functions.
- Many additions and fixes in documentation. Many compatibility fixes for various compilers and platforms. Other internal bugfixes, optimizations, updates, refactoring...
# 2.2.0 (2018-12-13)
Major release after many months of development in "master" branch and feature branches. Notable new features: defragmentation of GPU memory, buddy algorithm, convenience functions for sparse binding.
Major changes:
- New, more powerful defragmentation:
- Added structure `VmaDefragmentationInfo2`, functions `vmaDefragmentationBegin`, `vmaDefragmentationEnd`.
- Added support for defragmentation of GPU memory.
- Defragmentation of CPU memory now uses `memmove`, so it can move data to overlapping regions.
- Defragmentation of CPU memory is now available for memory types that are `HOST_VISIBLE` but not `HOST_COHERENT`.
- Added structure member `VmaVulkanFunctions::vkCmdCopyBuffer`.
- Major internal changes in defragmentation algorithm.
- VmaReplay: added parameters: `--DefragmentAfterLine`, `--DefragmentationFlags`.
- Old interface (structure `VmaDefragmentationInfo`, function `vmaDefragment`) is now deprecated.
- Added buddy algorithm, available for custom pools - flag `VMA_POOL_CREATE_BUDDY_ALGORITHM_BIT`.
- Added convenience functions for multiple allocations and deallocations at once, intended for sparse binding resources - functions `vmaAllocateMemoryPages`, `vmaFreeMemoryPages`.
- Added function that tries to resize existing allocation in place: `vmaResizeAllocation`.
- Added flags for allocation strategy: `VMA_ALLOCATION_CREATE_STRATEGY_BEST_FIT_BIT`, `VMA_ALLOCATION_CREATE_STRATEGY_WORST_FIT_BIT`, `VMA_ALLOCATION_CREATE_STRATEGY_FIRST_FIT_BIT`, and their aliases: `VMA_ALLOCATION_CREATE_STRATEGY_MIN_MEMORY_BIT`, `VMA_ALLOCATION_CREATE_STRATEGY_MIN_TIME_BIT`, `VMA_ALLOCATION_CREATE_STRATEGY_MIN_FRAGMENTATION_BIT`.
Minor changes:
- Changed behavior of allocation functions to return `VK_ERROR_VALIDATION_FAILED_EXT` when trying to allocate memory of size 0, create buffer with size 0, or image with one of the dimensions 0.
- VmaReplay: Added support for Windows end of lines.
- Updated recording CSV file format version to 1.5, to support new functions.
- Internal optimization: using read-write mutex on some platforms.
- Many additions and fixes in documentation. Many compatibility fixes for various compilers. Other internal bugfixes, optimizations, refactoring, added more internal validation...
# 2.1.0 (2018-09-10)
Minor bugfixes.
# 2.1.0-beta.1 (2018-08-27)
Major release after many months of development in "development" branch and features branches. Many new features added, some bugs fixed. API stays backward-compatible.
Major changes:
- Added linear allocation algorithm, accessible for custom pools, that can be used as free-at-once, stack, double stack, or ring buffer. See "Linear allocation algorithm" documentation chapter.
- Added `VMA_POOL_CREATE_LINEAR_ALGORITHM_BIT`, `VMA_ALLOCATION_CREATE_UPPER_ADDRESS_BIT`.
- Added feature to record sequence of calls to the library to a file and replay it using dedicated application. See documentation chapter "Record and replay".
- Recording: added `VmaAllocatorCreateInfo::pRecordSettings`.
- Replaying: added VmaReplay project.
- Recording file format: added document "docs/Recording file format.md".
- Improved support for non-coherent memory.
- Added functions: `vmaFlushAllocation`, `vmaInvalidateAllocation`.
- `nonCoherentAtomSize` is now respected automatically.
- Added `VmaVulkanFunctions::vkFlushMappedMemoryRanges`, `vkInvalidateMappedMemoryRanges`.
- Improved debug features related to detecting incorrect mapped memory usage. See documentation chapter "Debugging incorrect memory usage".
- Added debug macro `VMA_DEBUG_DETECT_CORRUPTION`, functions `vmaCheckCorruption`, `vmaCheckPoolCorruption`.
- Added debug macro `VMA_DEBUG_INITIALIZE_ALLOCATIONS` to initialize contents of allocations with a bit pattern.
- Changed behavior of `VMA_DEBUG_MARGIN` macro - it now adds margin also before first and after last allocation in a block.
- Changed format of JSON dump returned by `vmaBuildStatsString` (not backward compatible!).
- Custom pools and memory blocks now have IDs that don't change after sorting.
- Added properties: "CreationFrameIndex", "LastUseFrameIndex", "Usage".
- Changed VmaDumpVis tool to use these new properties for better coloring.
- Changed behavior of `vmaGetAllocationInfo` and `vmaTouchAllocation` to update `allocation.lastUseFrameIndex` even if allocation cannot become lost.
Minor changes:
- Changes in custom pools:
- Added new structure member `VmaPoolStats::blockCount`.
- Changed behavior of `VmaPoolCreateInfo::blockSize` = 0 (default) - it now means that pool may use variable block sizes, just like default pools do.
- Improved logic of `vmaFindMemoryTypeIndex` for some cases, especially integrated GPUs.
- VulkanSample application: Removed dependency on external library MathFu. Added own vector and matrix structures.
- Changes that improve compatibility with various platforms, including: Visual Studio 2012, 32-bit code, C compilers.
- Changed usage of "VK_KHR_dedicated_allocation" extension in the code to be optional, driven by macro `VMA_DEDICATED_ALLOCATION`, for compatibility with Android.
- Many additions and fixes in documentation, including description of new features, as well as "Validation layer warnings".
- Other bugfixes.
# 2.0.0 (2018-03-19)
A major release with many compatibility-breaking changes.
Notable new features:
- Introduction of `VmaAllocation` handle that you must retrieve from allocation functions and pass to deallocation functions next to normal `VkBuffer` and `VkImage`.
- Introduction of `VmaAllocationInfo` structure that you can retrieve from `VmaAllocation` handle to access parameters of the allocation (like `VkDeviceMemory` and offset) instead of retrieving them directly from allocation functions.
- Support for reference-counted mapping and persistently mapped allocations - see `vmaMapMemory`, `VMA_ALLOCATION_CREATE_MAPPED_BIT`.
- Support for custom memory pools - see `VmaPool` handle, `VmaPoolCreateInfo` structure, `vmaCreatePool` function.
- Support for defragmentation (compaction) of allocations - see function `vmaDefragment` and related structures.
- Support for "lost allocations" - see appropriate chapter on documentation Main Page.
# 1.0.1 (2017-07-04)
- Fixes for Linux GCC compilation.
- Changed "CONFIGURATION SECTION" to contain #ifndef so you can define these macros before including this header, not necessarily change them in the file.
# 1.0.0 (2017-06-16)
First public release.
third_party/vma/CMakeLists.txt
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-55
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@@ -1,55 +0,0 @@
cmake_minimum_required(VERSION 3.9)
project(VulkanMemoryAllocator)
find_package(Vulkan REQUIRED)
include_directories(${Vulkan_INCLUDE_DIR})
# VulkanMemoryAllocator contains an sample application which is not built by default
option(VMA_BUILD_SAMPLE "Build VulkanMemoryAllocator sample application" OFF)
option(VMA_BUILD_SAMPLE_SHADERS "Build VulkanMemoryAllocator sample application's shaders" OFF)
message(STATUS "VMA_BUILD_SAMPLE = ${VMA_BUILD_SAMPLE}")
message(STATUS "VMA_BUILD_SAMPLE_SHADERS = ${VMA_BUILD_SAMPLE_SHADERS}")
option(VMA_STATIC_VULKAN_FUNCTIONS "Link statically with Vulkan API" ON)
option(VMA_DYNAMIC_VULKAN_FUNCTIONS "Fetch pointers to Vulkan functions internally (no static linking)" OFF)
option(VMA_DEBUG_ALWAYS_DEDICATED_MEMORY "Every allocation will have its own memory block" OFF)
option(VMA_DEBUG_INITIALIZE_ALLOCATIONS "Automatically fill new allocations and destroyed allocations with some bit pattern" OFF)
option(VMA_DEBUG_GLOBAL_MUTEX "Enable single mutex protecting all entry calls to the library" OFF)
option(VMA_DEBUG_DONT_EXCEED_MAX_MEMORY_ALLOCATION_COUNT "Never exceed VkPhysicalDeviceLimits::maxMemoryAllocationCount and return error" OFF)
message(STATUS "VMA_STATIC_VULKAN_FUNCTIONS = ${VMA_STATIC_VULKAN_FUNCTIONS}")
message(STATUS "VMA_DYNAMIC_VULKAN_FUNCTIONS = ${VMA_DYNAMIC_VULKAN_FUNCTIONS}")
message(STATUS "VMA_DEBUG_ALWAYS_DEDICATED_MEMORY = ${VMA_DEBUG_ALWAYS_DEDICATED_MEMORY}")
message(STATUS "VMA_DEBUG_INITIALIZE_ALLOCATIONS = ${VMA_DEBUG_INITIALIZE_ALLOCATIONS}")
message(STATUS "VMA_DEBUG_GLOBAL_MUTEX = ${VMA_DEBUG_GLOBAL_MUTEX}")
message(STATUS "VMA_DEBUG_DONT_EXCEED_MAX_MEMORY_ALLOCATION_COUNT = ${VMA_DEBUG_DONT_EXCEED_MAX_MEMORY_ALLOCATION_COUNT}")
if(VMA_BUILD_SAMPLE)
set(VMA_BUILD_SAMPLE_SHADERS ON)
endif(VMA_BUILD_SAMPLE)
find_package(Doxygen)
option(BUILD_DOCUMENTATION "Create and install the HTML based API documentation (requires Doxygen)" OFF)
if(BUILD_DOCUMENTATION)
if(DOXYGEN_FOUND)
# set input and output files
set(DOXYGEN_IN ${CMAKE_CURRENT_SOURCE_DIR}/Doxyfile)
set(DOXYGEN_OUT ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile)
# request to configure the file
configure_file(${DOXYGEN_IN} ${DOXYGEN_OUT} @ONLY)
# note the option ALL which allows to build the docs together with the application
add_custom_target( doc_doxygen ALL
COMMAND ${DOXYGEN_EXECUTABLE} ${DOXYGEN_OUT}
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
COMMENT "Generating API documentation with Doxygen"
VERBATIM )
else()
message("Doxygen need to be installed to generate the doxygen documentation")
endif()
endif()
add_subdirectory(src)
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Copyright (c) 2017-2022 Advanced Micro Devices, Inc. All rights reserved.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
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# Vulkan Memory Allocator
Easy to integrate Vulkan memory allocation library.
**Documentation:** Browse online: [Vulkan Memory Allocator](https://gpuopen-librariesandsdks.github.io/VulkanMemoryAllocator/html/) (generated from Doxygen-style comments in [include/vk_mem_alloc.h](include/vk_mem_alloc.h))
**License:** MIT. See [LICENSE.txt](LICENSE.txt)
**Changelog:** See [CHANGELOG.md](CHANGELOG.md)
**Product page:** [Vulkan Memory Allocator on GPUOpen](https://gpuopen.com/gaming-product/vulkan-memory-allocator/)
**Build status:**
- Windows: [![Build status](https://ci.appveyor.com/api/projects/status/4vlcrb0emkaio2pn/branch/master?svg=true)](https://ci.appveyor.com/project/adam-sawicki-amd/vulkanmemoryallocator/branch/master)
- Linux: [![Build Status](https://app.travis-ci.com/GPUOpen-LibrariesAndSDKs/VulkanMemoryAllocator.svg?branch=master)](https://app.travis-ci.com/GPUOpen-LibrariesAndSDKs/VulkanMemoryAllocator)
[![Average time to resolve an issue](http://isitmaintained.com/badge/resolution/GPUOpen-LibrariesAndSDKs/VulkanMemoryAllocator.svg)](http://isitmaintained.com/project/GPUOpen-LibrariesAndSDKs/VulkanMemoryAllocator "Average time to resolve an issue")
# Problem
Memory allocation and resource (buffer and image) creation in Vulkan is difficult (comparing to older graphics APIs, like D3D11 or OpenGL) for several reasons:
- It requires a lot of boilerplate code, just like everything else in Vulkan, because it is a low-level and high-performance API.
- There is additional level of indirection: `VkDeviceMemory` is allocated separately from creating `VkBuffer`/`VkImage` and they must be bound together.
- Driver must be queried for supported memory heaps and memory types. Different GPU vendors provide different types of it.
- It is recommended to allocate bigger chunks of memory and assign parts of them to particular resources, as there is a limit on maximum number of memory blocks that can be allocated.
# Features
This library can help game developers to manage memory allocations and resource creation by offering some higher-level functions:
1. Functions that help to choose correct and optimal memory type based on intended usage of the memory.
- Required or preferred traits of the memory are expressed using higher-level description comparing to Vulkan flags.
2. Functions that allocate memory blocks, reserve and return parts of them (`VkDeviceMemory` + offset + size) to the user.
- Library keeps track of allocated memory blocks, used and unused ranges inside them, finds best matching unused ranges for new allocations, respects all the rules of alignment and buffer/image granularity.
3. Functions that can create an image/buffer, allocate memory for it and bind them together - all in one call.
Additional features:
- Well-documented - description of all functions and structures provided, along with chapters that contain general description and example code.
- Thread-safety: Library is designed to be used in multithreaded code. Access to a single device memory block referred by different buffers and textures (binding, mapping) is synchronized internally. Memory mapping is reference-counted.
- Configuration: Fill optional members of `VmaAllocatorCreateInfo` structure to provide custom CPU memory allocator, pointers to Vulkan functions and other parameters.
- Customization and integration with custom engines: Predefine appropriate macros to provide your own implementation of all external facilities used by the library like assert, mutex, atomic.
- Support for memory mapping, reference-counted internally. Support for persistently mapped memory: Just allocate with appropriate flag and access the pointer to already mapped memory.
- Support for non-coherent memory. Functions that flush/invalidate memory. `nonCoherentAtomSize` is respected automatically.
- Support for resource aliasing (overlap).
- Support for sparse binding and sparse residency: Convenience functions that allocate or free multiple memory pages at once.
- Custom memory pools: Create a pool with desired parameters (e.g. fixed or limited maximum size) and allocate memory out of it.
- Linear allocator: Create a pool with linear algorithm and use it for much faster allocations and deallocations in free-at-once, stack, double stack, or ring buffer fashion.
- Support for Vulkan 1.0, 1.1, 1.2, 1.3.
- Support for extensions (and equivalent functionality included in new Vulkan versions):
- VK_KHR_dedicated_allocation: Just enable it and it will be used automatically by the library.
- VK_KHR_buffer_device_address: Flag `VK_MEMORY_ALLOCATE_DEVICE_ADDRESS_BIT_KHR` is automatically added to memory allocations where needed.
- VK_EXT_memory_budget: Used internally if available to query for current usage and budget. If not available, it falls back to an estimation based on memory heap sizes.
- VK_EXT_memory_priority: Set `priority` of allocations or custom pools and it will be set automatically using this extension.
- VK_AMD_device_coherent_memory
- Defragmentation of GPU and CPU memory: Let the library move data around to free some memory blocks and make your allocations better compacted.
- Statistics: Obtain brief or detailed statistics about the amount of memory used, unused, number of allocated blocks, number of allocations etc. - globally, per memory heap, and per memory type.
- Debug annotations: Associate custom `void* pUserData` and debug `char* pName` with each allocation.
- JSON dump: Obtain a string in JSON format with detailed map of internal state, including list of allocations, their string names, and gaps between them.
- Convert this JSON dump into a picture to visualize your memory. See [tools/GpuMemDumpVis](tools/GpuMemDumpVis/README.md).
- Debugging incorrect memory usage: Enable initialization of all allocated memory with a bit pattern to detect usage of uninitialized or freed memory. Enable validation of a magic number after every allocation to detect out-of-bounds memory corruption.
- Support for interoperability with OpenGL.
- Virtual allocator: Interface for using core allocation algorithm to allocate any custom data, e.g. pieces of one large buffer.
# Prerequisites
- Self-contained C++ library in single header file. No external dependencies other than standard C and C++ library and of course Vulkan. Some features of C++14 used. STL containers, RTTI, or C++ exceptions are not used.
- Public interface in C, in same convention as Vulkan API. Implementation in C++.
- Error handling implemented by returning `VkResult` error codes - same way as in Vulkan.
- Interface documented using Doxygen-style comments.
- Platform-independent, but developed and tested on Windows using Visual Studio. Continuous integration setup for Windows and Linux. Used also on Android, MacOS, and other platforms.
# Example
Basic usage of this library is very simple. Advanced features are optional. After you created global `VmaAllocator` object, a complete code needed to create a buffer may look like this:
```cpp
VkBufferCreateInfo bufferInfo = { VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO };
bufferInfo.size = 65536;
bufferInfo.usage = VK_BUFFER_USAGE_VERTEX_BUFFER_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT;
VmaAllocationCreateInfo allocInfo = {};
allocInfo.usage = VMA_MEMORY_USAGE_AUTO;
VkBuffer buffer;
VmaAllocation allocation;
vmaCreateBuffer(allocator, &bufferInfo, &allocInfo, &buffer, &allocation, nullptr);
```
With this one function call:
1. `VkBuffer` is created.
2. `VkDeviceMemory` block is allocated if needed.
3. An unused region of the memory block is bound to this buffer.
`VmaAllocation` is an object that represents memory assigned to this buffer. It can be queried for parameters like `VkDeviceMemory` handle and offset.
# How to build
On Windows it is recommended to use [CMake UI](https://cmake.org/runningcmake/). Alternatively you can generate a Visual Studio project map using CMake in command line: `cmake -B./build/ -DCMAKE_BUILD_TYPE=Debug -G "Visual Studio 16 2019" -A x64 ./`
On Linux:
```
mkdir build
cd build
cmake ..
make
```
The following targets are available
| Target | Description | CMake option | Default setting |
| ------------- | ------------- | ------------- | ------------- |
| VmaSample | VMA sample application | `VMA_BUILD_SAMPLE` | `OFF` |
| VmaBuildSampleShaders | Shaders for VmaSample | `VMA_BUILD_SAMPLE_SHADERS` | `OFF` |
Please note that while VulkanMemoryAllocator library is supported on other platforms besides Windows, VmaSample is not.
These CMake options are available
| CMake option | Description | Default setting |
| ------------- | ------------- | ------------- |
| `VMA_RECORDING_ENABLED` | Enable VMA memory recording for debugging | `OFF` |
| `VMA_USE_STL_CONTAINERS` | Use C++ STL containers instead of VMA's containers | `OFF` |
| `VMA_STATIC_VULKAN_FUNCTIONS` | Link statically with Vulkan API | `OFF` |
| `VMA_DYNAMIC_VULKAN_FUNCTIONS` | Fetch pointers to Vulkan functions internally (no static linking) | `ON` |
| `VMA_DEBUG_ALWAYS_DEDICATED_MEMORY` | Every allocation will have its own memory block | `OFF` |
| `VMA_DEBUG_INITIALIZE_ALLOCATIONS` | Automatically fill new allocations and destroyed allocations with some bit pattern | `OFF` |
| `VMA_DEBUG_GLOBAL_MUTEX` | Enable single mutex protecting all entry calls to the library | `OFF` |
| `VMA_DEBUG_DONT_EXCEED_MAX_MEMORY_ALLOCATION_COUNT` | Never exceed [VkPhysicalDeviceLimits::maxMemoryAllocationCount](https://www.khronos.org/registry/vulkan/specs/1.1-extensions/html/vkspec.html#limits-maxMemoryAllocationCount) and return error | `OFF` |
# Binaries
The release comes with precompiled binary executable for "VulkanSample" application which contains test suite. It is compiled using Visual Studio 2019, so it requires appropriate libraries to work, including "MSVCP140.dll", "VCRUNTIME140.dll", "VCRUNTIME140_1.dll". If the launch fails with error message telling about those files missing, please download and install [Microsoft Visual C++ Redistributable for Visual Studio 2015, 2017 and 2019](https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads), "x64" version.
# Read more
See **[Documentation](https://gpuopen-librariesandsdks.github.io/VulkanMemoryAllocator/html/)**.
# Software using this library
- **[X-Plane](https://x-plane.com/)**
- **[Detroit: Become Human](https://gpuopen.com/learn/porting-detroit-3/)**
- **[Vulkan Samples](https://github.com/LunarG/VulkanSamples)** - official Khronos Vulkan samples. License: Apache-style.
- **[Anvil](https://github.com/GPUOpen-LibrariesAndSDKs/Anvil)** - cross-platform framework for Vulkan. License: MIT.
- **[Filament](https://github.com/google/filament)** - physically based rendering engine for Android, Windows, Linux and macOS, from Google. Apache License 2.0.
- **[Atypical Games - proprietary game engine](https://developer.samsung.com/galaxy-gamedev/gamedev-blog/infinitejet.html)**
- **[Flax Engine](https://flaxengine.com/)**
- **[Godot Engine](https://github.com/godotengine/godot/)** - multi-platform 2D and 3D game engine. License: MIT.
- **[Lightweight Java Game Library (LWJGL)](https://www.lwjgl.org/)** - includes binding of the library for Java. License: BSD.
- **[PowerVR SDK](https://github.com/powervr-graphics/Native_SDK)** - C++ cross-platform 3D graphics SDK, from Imagination. License: MIT.
- **[Skia](https://github.com/google/skia)** - complete 2D graphic library for drawing Text, Geometries, and Images, from Google.
- **[The Forge](https://github.com/ConfettiFX/The-Forge)** - cross-platform rendering framework. Apache License 2.0.
- **[VK9](https://github.com/disks86/VK9)** - Direct3D 9 compatibility layer using Vulkan. Zlib lincese.
- **[vkDOOM3](https://github.com/DustinHLand/vkDOOM3)** - Vulkan port of GPL DOOM 3 BFG Edition. License: GNU GPL.
- **[vkQuake2](https://github.com/kondrak/vkQuake2)** - vanilla Quake 2 with Vulkan support. License: GNU GPL.
- **[Vulkan Best Practice for Mobile Developers](https://github.com/ARM-software/vulkan_best_practice_for_mobile_developers)** from ARM. License: MIT.
- **[RPCS3](https://github.com/RPCS3/rpcs3)** - PlayStation 3 emulator/debugger. License: GNU GPLv2.
- **[PPSSPP](https://github.com/hrydgard/ppsspp)** - Playstation Portable emulator/debugger. License: GNU GPLv2+.
[Many other projects on GitHub](https://github.com/search?q=AMD_VULKAN_MEMORY_ALLOCATOR_H&type=Code) and some game development studios that use Vulkan in their games.
# See also
- **[D3D12 Memory Allocator](https://github.com/GPUOpen-LibrariesAndSDKs/D3D12MemoryAllocator)** - equivalent library for Direct3D 12. License: MIT.
- **[Awesome Vulkan](https://github.com/vinjn/awesome-vulkan)** - a curated list of awesome Vulkan libraries, debuggers and resources.
- **[VulkanMemoryAllocator-Hpp](https://github.com/malte-v/VulkanMemoryAllocator-Hpp)** - C++ binding for this library. License: CC0-1.0.
- **[PyVMA](https://github.com/realitix/pyvma)** - Python wrapper for this library. Author: Jean-Sébastien B. (@realitix). License: Apache 2.0.
- **[vk-mem](https://github.com/gwihlidal/vk-mem-rs)** - Rust binding for this library. Author: Graham Wihlidal. License: Apache 2.0 or MIT.
- **[Haskell bindings](https://hackage.haskell.org/package/VulkanMemoryAllocator)**, **[github](https://github.com/expipiplus1/vulkan/tree/master/VulkanMemoryAllocator)** - Haskell bindings for this library. Author: Ellie Hermaszewska (@expipiplus1). License BSD-3-Clause.
- **[vma_sample_sdl](https://github.com/rextimmy/vma_sample_sdl)** - SDL port of the sample app of this library (with the goal of running it on multiple platforms, including MacOS). Author: @rextimmy. License: MIT.
- **[vulkan-malloc](https://github.com/dylanede/vulkan-malloc)** - Vulkan memory allocation library for Rust. Based on version 1 of this library. Author: Dylan Ede (@dylanede). License: MIT / Apache 2.0.
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<div class="headertitle"><div class="title">Allocation names and user data </div></div>
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<div class="textblock"><h1><a class="anchor" id="allocation_user_data"></a>
Allocation user data</h1>
<p >You can annotate allocations with your own information, e.g. for debugging purposes. To do that, fill <a class="el" href="struct_vma_allocation_create_info.html#a8259e85c272683434f4abb4ddddffe19" title="Custom general-purpose pointer that will be stored in VmaAllocation, can be read as VmaAllocationInfo...">VmaAllocationCreateInfo::pUserData</a> field when creating an allocation. It is an opaque <code>void*</code> pointer. You can use it e.g. as a pointer, some handle, index, key, ordinal number or any other value that would associate the allocation with your custom metadata. It it useful to identify appropriate data structures in your engine given <a class="el" href="struct_vma_allocation.html" title="Represents single memory allocation.">VmaAllocation</a>, e.g. when doing <a class="el" href="defragmentation.html">Defragmentation</a>.</p>
<div class="fragment"><div class="line">VkBufferCreateInfo bufCreateInfo = ...</div>
<div class="line"> </div>
<div class="line">MyBufferMetadata* pMetadata = CreateBufferMetadata();</div>
<div class="line"> </div>
<div class="line"><a class="code hl_struct" href="struct_vma_allocation_create_info.html">VmaAllocationCreateInfo</a> allocCreateInfo = {};</div>
<div class="line">allocCreateInfo.<a class="code hl_variable" href="struct_vma_allocation_create_info.html#accb8b06b1f677d858cb9af20705fa910">usage</a> = <a class="code hl_enumvalue" href="group__group__alloc.html#ggaa5846affa1e9da3800e3e78fae2305cca27cde9026a84d34d525777baa41fce6e">VMA_MEMORY_USAGE_AUTO</a>;</div>
<div class="line">allocCreateInfo.<a class="code hl_variable" href="struct_vma_allocation_create_info.html#a8259e85c272683434f4abb4ddddffe19">pUserData</a> = pMetadata;</div>
<div class="line"> </div>
<div class="line">VkBuffer buffer;</div>
<div class="line"><a class="code hl_struct" href="struct_vma_allocation.html">VmaAllocation</a> allocation;</div>
<div class="line"><a class="code hl_function" href="group__group__alloc.html#gac72ee55598617e8eecca384e746bab51">vmaCreateBuffer</a>(allocator, &amp;bufCreateInfo, &amp;allocCreateInfo, &amp;buffer, &amp;allocation, <span class="keyword">nullptr</span>);</div>
<div class="ttc" id="agroup__group__alloc_html_gac72ee55598617e8eecca384e746bab51"><div class="ttname"><a href="group__group__alloc.html#gac72ee55598617e8eecca384e746bab51">vmaCreateBuffer</a></div><div class="ttdeci">VkResult vmaCreateBuffer(VmaAllocator allocator, const VkBufferCreateInfo *pBufferCreateInfo, const VmaAllocationCreateInfo *pAllocationCreateInfo, VkBuffer *pBuffer, VmaAllocation *pAllocation, VmaAllocationInfo *pAllocationInfo)</div><div class="ttdoc">Creates a new VkBuffer, allocates and binds memory for it.</div></div>
<div class="ttc" id="agroup__group__alloc_html_ggaa5846affa1e9da3800e3e78fae2305cca27cde9026a84d34d525777baa41fce6e"><div class="ttname"><a href="group__group__alloc.html#ggaa5846affa1e9da3800e3e78fae2305cca27cde9026a84d34d525777baa41fce6e">VMA_MEMORY_USAGE_AUTO</a></div><div class="ttdeci">@ VMA_MEMORY_USAGE_AUTO</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:492</div></div>
<div class="ttc" id="astruct_vma_allocation_create_info_html"><div class="ttname"><a href="struct_vma_allocation_create_info.html">VmaAllocationCreateInfo</a></div><div class="ttdoc">Parameters of new VmaAllocation.</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:1222</div></div>
<div class="ttc" id="astruct_vma_allocation_create_info_html_a8259e85c272683434f4abb4ddddffe19"><div class="ttname"><a href="struct_vma_allocation_create_info.html#a8259e85c272683434f4abb4ddddffe19">VmaAllocationCreateInfo::pUserData</a></div><div class="ttdeci">void * pUserData</div><div class="ttdoc">Custom general-purpose pointer that will be stored in VmaAllocation, can be read as VmaAllocationInfo...</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:1261</div></div>
<div class="ttc" id="astruct_vma_allocation_create_info_html_accb8b06b1f677d858cb9af20705fa910"><div class="ttname"><a href="struct_vma_allocation_create_info.html#accb8b06b1f677d858cb9af20705fa910">VmaAllocationCreateInfo::usage</a></div><div class="ttdeci">VmaMemoryUsage usage</div><div class="ttdoc">Intended usage of memory.</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:1230</div></div>
<div class="ttc" id="astruct_vma_allocation_html"><div class="ttname"><a href="struct_vma_allocation.html">VmaAllocation</a></div><div class="ttdoc">Represents single memory allocation.</div></div>
</div><!-- fragment --><p >The pointer may be later retrieved as <a class="el" href="struct_vma_allocation_info.html#adc507656149c04de7ed95d0042ba2a13" title="Custom general-purpose pointer that was passed as VmaAllocationCreateInfo::pUserData or set using vma...">VmaAllocationInfo::pUserData</a>:</p>
<div class="fragment"><div class="line"><a class="code hl_struct" href="struct_vma_allocation_info.html">VmaAllocationInfo</a> allocInfo;</div>
<div class="line"><a class="code hl_function" href="group__group__alloc.html#ga86dd08aba8633bfa4ad0df2e76481d8b">vmaGetAllocationInfo</a>(allocator, allocation, &amp;allocInfo);</div>
<div class="line">MyBufferMetadata* pMetadata = (MyBufferMetadata*)allocInfo.<a class="code hl_variable" href="struct_vma_allocation_info.html#adc507656149c04de7ed95d0042ba2a13">pUserData</a>;</div>
<div class="ttc" id="agroup__group__alloc_html_ga86dd08aba8633bfa4ad0df2e76481d8b"><div class="ttname"><a href="group__group__alloc.html#ga86dd08aba8633bfa4ad0df2e76481d8b">vmaGetAllocationInfo</a></div><div class="ttdeci">void vmaGetAllocationInfo(VmaAllocator allocator, VmaAllocation allocation, VmaAllocationInfo *pAllocationInfo)</div><div class="ttdoc">Returns current information about specified allocation.</div></div>
<div class="ttc" id="astruct_vma_allocation_info_html"><div class="ttname"><a href="struct_vma_allocation_info.html">VmaAllocationInfo</a></div><div class="ttdoc">Parameters of VmaAllocation objects, that can be retrieved using function vmaGetAllocationInfo().</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:1337</div></div>
<div class="ttc" id="astruct_vma_allocation_info_html_adc507656149c04de7ed95d0042ba2a13"><div class="ttname"><a href="struct_vma_allocation_info.html#adc507656149c04de7ed95d0042ba2a13">VmaAllocationInfo::pUserData</a></div><div class="ttdeci">void * pUserData</div><div class="ttdoc">Custom general-purpose pointer that was passed as VmaAllocationCreateInfo::pUserData or set using vma...</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:1384</div></div>
</div><!-- fragment --><p >It can also be changed using function <a class="el" href="group__group__alloc.html#gaf9147d31ffc11d62fc187bde283ed14f" title="Sets pUserData in given allocation to new value.">vmaSetAllocationUserData()</a>.</p>
<p >Values of (non-zero) allocations' <code>pUserData</code> are printed in JSON report created by <a class="el" href="group__group__stats.html#gaa4fee7eb5253377599ef4fd38c93c2a0" title="Builds and returns statistics as a null-terminated string in JSON format.">vmaBuildStatsString()</a> in hexadecimal form.</p>
<h1><a class="anchor" id="allocation_names"></a>
Allocation names</h1>
<p >An allocation can also carry a null-terminated string, giving a name to the allocation. To set it, call <a class="el" href="group__group__alloc.html#gabe02cbb0cd913b3f125958179f2020fc" title="Sets pName in given allocation to new value.">vmaSetAllocationName()</a>. The library creates internal copy of the string, so the pointer you pass doesn't need to be valid for whole lifetime of the allocation. You can free it after the call.</p>
<div class="fragment"><div class="line">std::string imageName = <span class="stringliteral">&quot;Texture: &quot;</span>;</div>
<div class="line">imageName += fileName;</div>
<div class="line"><a class="code hl_function" href="group__group__alloc.html#gabe02cbb0cd913b3f125958179f2020fc">vmaSetAllocationName</a>(allocator, allocation, imageName.c_str());</div>
<div class="ttc" id="agroup__group__alloc_html_gabe02cbb0cd913b3f125958179f2020fc"><div class="ttname"><a href="group__group__alloc.html#gabe02cbb0cd913b3f125958179f2020fc">vmaSetAllocationName</a></div><div class="ttdeci">void vmaSetAllocationName(VmaAllocator allocator, VmaAllocation allocation, const char *pName)</div><div class="ttdoc">Sets pName in given allocation to new value.</div></div>
</div><!-- fragment --><p >The string can be later retrieved by inspecting <a class="el" href="struct_vma_allocation_info.html#a28612f3e897e5b268254a3c63413d759" title="Custom allocation name that was set with vmaSetAllocationName().">VmaAllocationInfo::pName</a>. It is also printed in JSON report created by <a class="el" href="group__group__stats.html#gaa4fee7eb5253377599ef4fd38c93c2a0" title="Builds and returns statistics as a null-terminated string in JSON format.">vmaBuildStatsString()</a>.</p>
<dl class="section note"><dt>Note</dt><dd>Setting string name to VMA allocation doesn't automatically set it to the Vulkan buffer or image created with it. You must do it manually using an extension like VK_EXT_debug_utils, which is independent of this library. </dd></dl>
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<div class="headertitle"><div class="title">Class List</div></div>
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<div class="textblock">Here are the classes, structs, unions and interfaces with brief descriptions:</div><div class="directory">
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<tr id="row_0_" class="even"><td class="entry"><span style="width:16px;display:inline-block;">&#160;</span><span class="icona"><span class="icon">C</span></span><a class="el" href="struct_vma_allocation.html" target="_self">VmaAllocation</a></td><td class="desc">Represents single memory allocation </td></tr>
<tr id="row_1_"><td class="entry"><span style="width:16px;display:inline-block;">&#160;</span><span class="icona"><span class="icon">C</span></span><a class="el" href="struct_vma_allocation_create_info.html" target="_self">VmaAllocationCreateInfo</a></td><td class="desc">Parameters of new <a class="el" href="struct_vma_allocation.html" title="Represents single memory allocation.">VmaAllocation</a> </td></tr>
<tr id="row_2_" class="even"><td class="entry"><span style="width:16px;display:inline-block;">&#160;</span><span class="icona"><span class="icon">C</span></span><a class="el" href="struct_vma_allocation_info.html" target="_self">VmaAllocationInfo</a></td><td class="desc">Parameters of <a class="el" href="struct_vma_allocation.html" title="Represents single memory allocation.">VmaAllocation</a> objects, that can be retrieved using function <a class="el" href="group__group__alloc.html#ga86dd08aba8633bfa4ad0df2e76481d8b" title="Returns current information about specified allocation.">vmaGetAllocationInfo()</a> </td></tr>
<tr id="row_3_"><td class="entry"><span style="width:16px;display:inline-block;">&#160;</span><span class="icona"><span class="icon">C</span></span><a class="el" href="struct_vma_allocator.html" target="_self">VmaAllocator</a></td><td class="desc">Represents main object of this library initialized </td></tr>
<tr id="row_4_" class="even"><td class="entry"><span style="width:16px;display:inline-block;">&#160;</span><span class="icona"><span class="icon">C</span></span><a class="el" href="struct_vma_allocator_create_info.html" target="_self">VmaAllocatorCreateInfo</a></td><td class="desc">Description of a Allocator to be created </td></tr>
<tr id="row_5_"><td class="entry"><span style="width:16px;display:inline-block;">&#160;</span><span class="icona"><span class="icon">C</span></span><a class="el" href="struct_vma_allocator_info.html" target="_self">VmaAllocatorInfo</a></td><td class="desc">Information about existing <a class="el" href="struct_vma_allocator.html" title="Represents main object of this library initialized.">VmaAllocator</a> object </td></tr>
<tr id="row_6_" class="even"><td class="entry"><span style="width:16px;display:inline-block;">&#160;</span><span class="icona"><span class="icon">C</span></span><a class="el" href="struct_vma_budget.html" target="_self">VmaBudget</a></td><td class="desc">Statistics of current memory usage and available budget for a specific memory heap </td></tr>
<tr id="row_7_"><td class="entry"><span style="width:16px;display:inline-block;">&#160;</span><span class="icona"><span class="icon">C</span></span><a class="el" href="struct_vma_defragmentation_context.html" target="_self">VmaDefragmentationContext</a></td><td class="desc">An opaque object that represents started defragmentation process </td></tr>
<tr id="row_8_" class="even"><td class="entry"><span style="width:16px;display:inline-block;">&#160;</span><span class="icona"><span class="icon">C</span></span><a class="el" href="struct_vma_defragmentation_info.html" target="_self">VmaDefragmentationInfo</a></td><td class="desc">Parameters for defragmentation </td></tr>
<tr id="row_9_"><td class="entry"><span style="width:16px;display:inline-block;">&#160;</span><span class="icona"><span class="icon">C</span></span><a class="el" href="struct_vma_defragmentation_move.html" target="_self">VmaDefragmentationMove</a></td><td class="desc">Single move of an allocation to be done for defragmentation </td></tr>
<tr id="row_10_" class="even"><td class="entry"><span style="width:16px;display:inline-block;">&#160;</span><span class="icona"><span class="icon">C</span></span><a class="el" href="struct_vma_defragmentation_pass_move_info.html" target="_self">VmaDefragmentationPassMoveInfo</a></td><td class="desc">Parameters for incremental defragmentation steps </td></tr>
<tr id="row_11_"><td class="entry"><span style="width:16px;display:inline-block;">&#160;</span><span class="icona"><span class="icon">C</span></span><a class="el" href="struct_vma_defragmentation_stats.html" target="_self">VmaDefragmentationStats</a></td><td class="desc">Statistics returned for defragmentation process in function <a class="el" href="group__group__alloc.html#ga59f01ca3d53d50b7cca9b442b77a3e87" title="Ends defragmentation process.">vmaEndDefragmentation()</a> </td></tr>
<tr id="row_12_" class="even"><td class="entry"><span style="width:16px;display:inline-block;">&#160;</span><span class="icona"><span class="icon">C</span></span><a class="el" href="struct_vma_detailed_statistics.html" target="_self">VmaDetailedStatistics</a></td><td class="desc">More detailed statistics than <a class="el" href="struct_vma_statistics.html" title="Calculated statistics of memory usage e.g. in a specific memory type, heap, custom pool,...">VmaStatistics</a> </td></tr>
<tr id="row_13_"><td class="entry"><span style="width:16px;display:inline-block;">&#160;</span><span class="icona"><span class="icon">C</span></span><a class="el" href="struct_vma_device_memory_callbacks.html" target="_self">VmaDeviceMemoryCallbacks</a></td><td class="desc">Set of callbacks that the library will call for <code>vkAllocateMemory</code> and <code>vkFreeMemory</code> </td></tr>
<tr id="row_14_" class="even"><td class="entry"><span style="width:16px;display:inline-block;">&#160;</span><span class="icona"><span class="icon">C</span></span><a class="el" href="struct_vma_pool.html" target="_self">VmaPool</a></td><td class="desc">Represents custom memory pool </td></tr>
<tr id="row_15_"><td class="entry"><span style="width:16px;display:inline-block;">&#160;</span><span class="icona"><span class="icon">C</span></span><a class="el" href="struct_vma_pool_create_info.html" target="_self">VmaPoolCreateInfo</a></td><td class="desc">Describes parameter of created <a class="el" href="struct_vma_pool.html" title="Represents custom memory pool.">VmaPool</a> </td></tr>
<tr id="row_16_" class="even"><td class="entry"><span style="width:16px;display:inline-block;">&#160;</span><span class="icona"><span class="icon">C</span></span><a class="el" href="struct_vma_statistics.html" target="_self">VmaStatistics</a></td><td class="desc">Calculated statistics of memory usage e.g. in a specific memory type, heap, custom pool, or total </td></tr>
<tr id="row_17_"><td class="entry"><span style="width:16px;display:inline-block;">&#160;</span><span class="icona"><span class="icon">C</span></span><a class="el" href="struct_vma_total_statistics.html" target="_self">VmaTotalStatistics</a></td><td class="desc">General statistics from current state of the Allocator - total memory usage across all memory heaps and types </td></tr>
<tr id="row_18_" class="even"><td class="entry"><span style="width:16px;display:inline-block;">&#160;</span><span class="icona"><span class="icon">C</span></span><a class="el" href="struct_vma_virtual_allocation.html" target="_self">VmaVirtualAllocation</a></td><td class="desc">Represents single memory allocation done inside <a class="el" href="struct_vma_virtual_block.html" title="Handle to a virtual block object that allows to use core allocation algorithm without allocating any ...">VmaVirtualBlock</a> </td></tr>
<tr id="row_19_"><td class="entry"><span style="width:16px;display:inline-block;">&#160;</span><span class="icona"><span class="icon">C</span></span><a class="el" href="struct_vma_virtual_allocation_create_info.html" target="_self">VmaVirtualAllocationCreateInfo</a></td><td class="desc">Parameters of created virtual allocation to be passed to <a class="el" href="group__group__virtual.html#ga6b7cdcc1c3e5103c323fedc4e1319e01" title="Allocates new virtual allocation inside given VmaVirtualBlock.">vmaVirtualAllocate()</a> </td></tr>
<tr id="row_20_" class="even"><td class="entry"><span style="width:16px;display:inline-block;">&#160;</span><span class="icona"><span class="icon">C</span></span><a class="el" href="struct_vma_virtual_allocation_info.html" target="_self">VmaVirtualAllocationInfo</a></td><td class="desc">Parameters of an existing virtual allocation, returned by <a class="el" href="group__group__virtual.html#ga8ee14ceb1fe033ec84d8aa29e1f75afa" title="Returns information about a specific virtual allocation within a virtual block, like its size and pUs...">vmaGetVirtualAllocationInfo()</a> </td></tr>
<tr id="row_21_"><td class="entry"><span style="width:16px;display:inline-block;">&#160;</span><span class="icona"><span class="icon">C</span></span><a class="el" href="struct_vma_virtual_block.html" target="_self">VmaVirtualBlock</a></td><td class="desc">Handle to a virtual block object that allows to use core allocation algorithm without allocating any real GPU memory </td></tr>
<tr id="row_22_" class="even"><td class="entry"><span style="width:16px;display:inline-block;">&#160;</span><span class="icona"><span class="icon">C</span></span><a class="el" href="struct_vma_virtual_block_create_info.html" target="_self">VmaVirtualBlockCreateInfo</a></td><td class="desc">Parameters of created <a class="el" href="struct_vma_virtual_block.html" title="Handle to a virtual block object that allows to use core allocation algorithm without allocating any ...">VmaVirtualBlock</a> object to be passed to <a class="el" href="group__group__virtual.html#gab585754076877265fdae33e5c40ef13b" title="Creates new VmaVirtualBlock object.">vmaCreateVirtualBlock()</a> </td></tr>
<tr id="row_23_"><td class="entry"><span style="width:16px;display:inline-block;">&#160;</span><span class="icona"><span class="icon">C</span></span><a class="el" href="struct_vma_vulkan_functions.html" target="_self">VmaVulkanFunctions</a></td><td class="desc">Pointers to some Vulkan functions - a subset used by the library </td></tr>
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<div class="headertitle"><div class="title">Choosing memory type </div></div>
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<div class="textblock"><p >Physical devices in Vulkan support various combinations of memory heaps and types. Help with choosing correct and optimal memory type for your specific resource is one of the key features of this library. You can use it by filling appropriate members of <a class="el" href="struct_vma_allocation_create_info.html" title="Parameters of new VmaAllocation.">VmaAllocationCreateInfo</a> structure, as described below. You can also combine multiple methods.</p>
<ol type="1">
<li>If you just want to find memory type index that meets your requirements, you can use function: <a class="el" href="group__group__alloc.html#gae790ab9ffaf7667fb8f62523e6897888" title="Helps to find memoryTypeIndex, given VkBufferCreateInfo and VmaAllocationCreateInfo.">vmaFindMemoryTypeIndexForBufferInfo()</a>, <a class="el" href="group__group__alloc.html#ga088da83d8eaf3ce9056d9ea0b981d472" title="Helps to find memoryTypeIndex, given VkImageCreateInfo and VmaAllocationCreateInfo.">vmaFindMemoryTypeIndexForImageInfo()</a>, <a class="el" href="group__group__alloc.html#gaef15a94b58fbcb0fe706d5720e84a74a" title="Helps to find memoryTypeIndex, given memoryTypeBits and VmaAllocationCreateInfo.">vmaFindMemoryTypeIndex()</a>.</li>
<li>If you want to allocate a region of device memory without association with any specific image or buffer, you can use function <a class="el" href="group__group__alloc.html#gabf28077dbf82d0908b8acbe8ee8dd9b8" title="General purpose memory allocation.">vmaAllocateMemory()</a>. Usage of this function is not recommended and usually not needed. <a class="el" href="group__group__alloc.html#gad37e82e492b3de38fc3f4cffd9ad0ae1" title="General purpose memory allocation for multiple allocation objects at once.">vmaAllocateMemoryPages()</a> function is also provided for creating multiple allocations at once, which may be useful for sparse binding.</li>
<li>If you already have a buffer or an image created, you want to allocate memory for it and then you will bind it yourself, you can use function <a class="el" href="group__group__alloc.html#ga7fdf64415b6c3d83c454f28d2c53df7b" title="Allocates memory suitable for given VkBuffer.">vmaAllocateMemoryForBuffer()</a>, <a class="el" href="group__group__alloc.html#ga0faa3f9e5fb233d29d1e00390650febb" title="Allocates memory suitable for given VkImage.">vmaAllocateMemoryForImage()</a>. For binding you should use functions: <a class="el" href="group__group__alloc.html#ga6b0929b914b60cf2d45cac4bf3547470" title="Binds buffer to allocation.">vmaBindBufferMemory()</a>, <a class="el" href="group__group__alloc.html#ga3d3ca45799923aa5d138e9e5f9eb2da5" title="Binds image to allocation.">vmaBindImageMemory()</a> or their extended versions: <a class="el" href="group__group__alloc.html#ga927c944f45e0f2941182abb6f608e64a" title="Binds buffer to allocation with additional parameters.">vmaBindBufferMemory2()</a>, <a class="el" href="group__group__alloc.html#gaa8251ee81b0045a443e35b8e8aa021bc" title="Binds image to allocation with additional parameters.">vmaBindImageMemory2()</a>.</li>
<li><b>This is the easiest and recommended way to use this library:</b> If you want to create a buffer or an image, allocate memory for it and bind them together, all in one call, you can use function <a class="el" href="group__group__alloc.html#gac72ee55598617e8eecca384e746bab51" title="Creates a new VkBuffer, allocates and binds memory for it.">vmaCreateBuffer()</a>, <a class="el" href="group__group__alloc.html#ga02a94f25679275851a53e82eacbcfc73" title="Function similar to vmaCreateBuffer().">vmaCreateImage()</a>.</li>
</ol>
<p >When using 3. or 4., the library internally queries Vulkan for memory types supported for that buffer or image (function <code>vkGetBufferMemoryRequirements()</code>) and uses only one of these types.</p>
<p >If no memory type can be found that meets all the requirements, these functions return <code>VK_ERROR_FEATURE_NOT_PRESENT</code>.</p>
<p >You can leave <a class="el" href="struct_vma_allocation_create_info.html" title="Parameters of new VmaAllocation.">VmaAllocationCreateInfo</a> structure completely filled with zeros. It means no requirements are specified for memory type. It is valid, although not very useful.</p>
<h1><a class="anchor" id="choosing_memory_type_usage"></a>
Usage</h1>
<p >The easiest way to specify memory requirements is to fill member <a class="el" href="struct_vma_allocation_create_info.html#accb8b06b1f677d858cb9af20705fa910" title="Intended usage of memory.">VmaAllocationCreateInfo::usage</a> using one of the values of enum <a class="el" href="group__group__alloc.html#gaa5846affa1e9da3800e3e78fae2305cc" title="Intended usage of the allocated memory.">VmaMemoryUsage</a>. It defines high level, common usage types. Since version 3 of the library, it is recommended to use <a class="el" href="group__group__alloc.html#ggaa5846affa1e9da3800e3e78fae2305cca27cde9026a84d34d525777baa41fce6e">VMA_MEMORY_USAGE_AUTO</a> to let it select best memory type for your resource automatically.</p>
<p >For example, if you want to create a uniform buffer that will be filled using transfer only once or infrequently and then used for rendering every frame as a uniform buffer, you can do it using following code. The buffer will most likely end up in a memory type with <code>VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT</code> to be fast to access by the GPU device.</p>
<div class="fragment"><div class="line">VkBufferCreateInfo bufferInfo = { VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO };</div>
<div class="line">bufferInfo.size = 65536;</div>
<div class="line">bufferInfo.usage = VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT;</div>
<div class="line"> </div>
<div class="line"><a class="code hl_struct" href="struct_vma_allocation_create_info.html">VmaAllocationCreateInfo</a> allocInfo = {};</div>
<div class="line">allocInfo.<a class="code hl_variable" href="struct_vma_allocation_create_info.html#accb8b06b1f677d858cb9af20705fa910">usage</a> = <a class="code hl_enumvalue" href="group__group__alloc.html#ggaa5846affa1e9da3800e3e78fae2305cca27cde9026a84d34d525777baa41fce6e">VMA_MEMORY_USAGE_AUTO</a>;</div>
<div class="line"> </div>
<div class="line">VkBuffer buffer;</div>
<div class="line"><a class="code hl_struct" href="struct_vma_allocation.html">VmaAllocation</a> allocation;</div>
<div class="line"><a class="code hl_function" href="group__group__alloc.html#gac72ee55598617e8eecca384e746bab51">vmaCreateBuffer</a>(allocator, &amp;bufferInfo, &amp;allocInfo, &amp;buffer, &amp;allocation, <span class="keyword">nullptr</span>);</div>
<div class="ttc" id="agroup__group__alloc_html_gac72ee55598617e8eecca384e746bab51"><div class="ttname"><a href="group__group__alloc.html#gac72ee55598617e8eecca384e746bab51">vmaCreateBuffer</a></div><div class="ttdeci">VkResult vmaCreateBuffer(VmaAllocator allocator, const VkBufferCreateInfo *pBufferCreateInfo, const VmaAllocationCreateInfo *pAllocationCreateInfo, VkBuffer *pBuffer, VmaAllocation *pAllocation, VmaAllocationInfo *pAllocationInfo)</div><div class="ttdoc">Creates a new VkBuffer, allocates and binds memory for it.</div></div>
<div class="ttc" id="agroup__group__alloc_html_ggaa5846affa1e9da3800e3e78fae2305cca27cde9026a84d34d525777baa41fce6e"><div class="ttname"><a href="group__group__alloc.html#ggaa5846affa1e9da3800e3e78fae2305cca27cde9026a84d34d525777baa41fce6e">VMA_MEMORY_USAGE_AUTO</a></div><div class="ttdeci">@ VMA_MEMORY_USAGE_AUTO</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:492</div></div>
<div class="ttc" id="astruct_vma_allocation_create_info_html"><div class="ttname"><a href="struct_vma_allocation_create_info.html">VmaAllocationCreateInfo</a></div><div class="ttdoc">Parameters of new VmaAllocation.</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:1222</div></div>
<div class="ttc" id="astruct_vma_allocation_create_info_html_accb8b06b1f677d858cb9af20705fa910"><div class="ttname"><a href="struct_vma_allocation_create_info.html#accb8b06b1f677d858cb9af20705fa910">VmaAllocationCreateInfo::usage</a></div><div class="ttdeci">VmaMemoryUsage usage</div><div class="ttdoc">Intended usage of memory.</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:1230</div></div>
<div class="ttc" id="astruct_vma_allocation_html"><div class="ttname"><a href="struct_vma_allocation.html">VmaAllocation</a></div><div class="ttdoc">Represents single memory allocation.</div></div>
</div><!-- fragment --><p >If you have a preference for putting the resource in GPU (device) memory or CPU (host) memory on systems with discrete graphics card that have the memories separate, you can use <a class="el" href="group__group__alloc.html#ggaa5846affa1e9da3800e3e78fae2305ccae2adb696d6a73c18bb20c23666661327">VMA_MEMORY_USAGE_AUTO_PREFER_DEVICE</a> or <a class="el" href="group__group__alloc.html#ggaa5846affa1e9da3800e3e78fae2305cca9b422585242160b8ed3418310ee6664d">VMA_MEMORY_USAGE_AUTO_PREFER_HOST</a>.</p>
<p >When using <code>VMA_MEMORY_USAGE_AUTO*</code> while you want to map the allocated memory, you also need to specify one of the host access flags: <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a9be224df3bfc1cfa06203aed689a30c5">VMA_ALLOCATION_CREATE_HOST_ACCESS_SEQUENTIAL_WRITE_BIT</a> or <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597add61238d98e20917b9a06c617763f492">VMA_ALLOCATION_CREATE_HOST_ACCESS_RANDOM_BIT</a>. This will help the library decide about preferred memory type to ensure it has <code>VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT</code> so you can map it.</p>
<p >For example, a staging buffer that will be filled via mapped pointer and then used as a source of transfer to the buffer decribed previously can be created like this. It will likely and up in a memory type that is <code>HOST_VISIBLE</code> and <code>HOST_COHERENT</code> but not <code>HOST_CACHED</code> (meaning uncached, write-combined) and not <code>DEVICE_LOCAL</code> (meaning system RAM).</p>
<div class="fragment"><div class="line">VkBufferCreateInfo stagingBufferInfo = { VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO };</div>
<div class="line">stagingBufferInfo.size = 65536;</div>
<div class="line">stagingBufferInfo.usage = VK_BUFFER_USAGE_TRANSFER_SRC_BIT;</div>
<div class="line"> </div>
<div class="line"><a class="code hl_struct" href="struct_vma_allocation_create_info.html">VmaAllocationCreateInfo</a> stagingAllocInfo = {};</div>
<div class="line">stagingAllocInfo.<a class="code hl_variable" href="struct_vma_allocation_create_info.html#accb8b06b1f677d858cb9af20705fa910">usage</a> = <a class="code hl_enumvalue" href="group__group__alloc.html#ggaa5846affa1e9da3800e3e78fae2305cca27cde9026a84d34d525777baa41fce6e">VMA_MEMORY_USAGE_AUTO</a>;</div>
<div class="line">stagingAllocInfo.<a class="code hl_variable" href="struct_vma_allocation_create_info.html#add09658ac14fe290ace25470ddd6d41b">flags</a> = <a class="code hl_enumvalue" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a9be224df3bfc1cfa06203aed689a30c5">VMA_ALLOCATION_CREATE_HOST_ACCESS_SEQUENTIAL_WRITE_BIT</a>;</div>
<div class="line"> </div>
<div class="line">VkBuffer stagingBuffer;</div>
<div class="line"><a class="code hl_struct" href="struct_vma_allocation.html">VmaAllocation</a> stagingAllocation;</div>
<div class="line"><a class="code hl_function" href="group__group__alloc.html#gac72ee55598617e8eecca384e746bab51">vmaCreateBuffer</a>(allocator, &amp;stagingBufferInfo, &amp;stagingAllocInfo, &amp;stagingBuffer, &amp;stagingAllocation, <span class="keyword">nullptr</span>);</div>
<div class="ttc" id="agroup__group__alloc_html_ggad9889c10c798b040d59c92f257cae597a9be224df3bfc1cfa06203aed689a30c5"><div class="ttname"><a href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a9be224df3bfc1cfa06203aed689a30c5">VMA_ALLOCATION_CREATE_HOST_ACCESS_SEQUENTIAL_WRITE_BIT</a></div><div class="ttdeci">@ VMA_ALLOCATION_CREATE_HOST_ACCESS_SEQUENTIAL_WRITE_BIT</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:598</div></div>
<div class="ttc" id="astruct_vma_allocation_create_info_html_add09658ac14fe290ace25470ddd6d41b"><div class="ttname"><a href="struct_vma_allocation_create_info.html#add09658ac14fe290ace25470ddd6d41b">VmaAllocationCreateInfo::flags</a></div><div class="ttdeci">VmaAllocationCreateFlags flags</div><div class="ttdoc">Use VmaAllocationCreateFlagBits enum.</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:1224</div></div>
</div><!-- fragment --><p >For more examples of creating different kinds of resources, see chapter <a class="el" href="usage_patterns.html">Recommended usage patterns</a>.</p>
<p >Usage values <code>VMA_MEMORY_USAGE_AUTO*</code> are legal to use only when the library knows about the resource being created by having <code>VkBufferCreateInfo</code> / <code>VkImageCreateInfo</code> passed, so they work with functions like: <a class="el" href="group__group__alloc.html#gac72ee55598617e8eecca384e746bab51" title="Creates a new VkBuffer, allocates and binds memory for it.">vmaCreateBuffer()</a>, <a class="el" href="group__group__alloc.html#ga02a94f25679275851a53e82eacbcfc73" title="Function similar to vmaCreateBuffer().">vmaCreateImage()</a>, <a class="el" href="group__group__alloc.html#gae790ab9ffaf7667fb8f62523e6897888" title="Helps to find memoryTypeIndex, given VkBufferCreateInfo and VmaAllocationCreateInfo.">vmaFindMemoryTypeIndexForBufferInfo()</a> etc. If you allocate raw memory using function <a class="el" href="group__group__alloc.html#gabf28077dbf82d0908b8acbe8ee8dd9b8" title="General purpose memory allocation.">vmaAllocateMemory()</a>, you have to use other means of selecting memory type, as decribed below.</p>
<dl class="section note"><dt>Note</dt><dd>Old usage values (<code>VMA_MEMORY_USAGE_GPU_ONLY</code>, <code>VMA_MEMORY_USAGE_CPU_ONLY</code>, <code>VMA_MEMORY_USAGE_CPU_TO_GPU</code>, <code>VMA_MEMORY_USAGE_GPU_TO_CPU</code>, <code>VMA_MEMORY_USAGE_CPU_COPY</code>) are still available and work same way as in previous versions of the library for backward compatibility, but they are not recommended.</dd></dl>
<h1><a class="anchor" id="choosing_memory_type_required_preferred_flags"></a>
Required and preferred flags</h1>
<p >You can specify more detailed requirements by filling members <a class="el" href="struct_vma_allocation_create_info.html#a9166390303ff42d783305bc31c2b6b90" title="Flags that must be set in a Memory Type chosen for an allocation.">VmaAllocationCreateInfo::requiredFlags</a> and <a class="el" href="struct_vma_allocation_create_info.html#a7fe8d81a1ad10b2a2faacacee5b15d6d" title="Flags that preferably should be set in a memory type chosen for an allocation.">VmaAllocationCreateInfo::preferredFlags</a> with a combination of bits from enum <code>VkMemoryPropertyFlags</code>. For example, if you want to create a buffer that will be persistently mapped on host (so it must be <code>HOST_VISIBLE</code>) and preferably will also be <code>HOST_COHERENT</code> and <code>HOST_CACHED</code>, use following code:</p>
<div class="fragment"><div class="line"><a class="code hl_struct" href="struct_vma_allocation_create_info.html">VmaAllocationCreateInfo</a> allocInfo = {};</div>
<div class="line">allocInfo.<a class="code hl_variable" href="struct_vma_allocation_create_info.html#a9166390303ff42d783305bc31c2b6b90">requiredFlags</a> = VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT;</div>
<div class="line">allocInfo.<a class="code hl_variable" href="struct_vma_allocation_create_info.html#a7fe8d81a1ad10b2a2faacacee5b15d6d">preferredFlags</a> = VK_MEMORY_PROPERTY_HOST_COHERENT_BIT | VK_MEMORY_PROPERTY_HOST_CACHED_BIT;</div>
<div class="line">allocInfo.<a class="code hl_variable" href="struct_vma_allocation_create_info.html#add09658ac14fe290ace25470ddd6d41b">flags</a> = <a class="code hl_enumvalue" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597add61238d98e20917b9a06c617763f492">VMA_ALLOCATION_CREATE_HOST_ACCESS_RANDOM_BIT</a> | <a class="code hl_enumvalue" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a11da372cc3a82931c5e5d6146cd9dd1f">VMA_ALLOCATION_CREATE_MAPPED_BIT</a>;</div>
<div class="line"> </div>
<div class="line">VkBuffer buffer;</div>
<div class="line"><a class="code hl_struct" href="struct_vma_allocation.html">VmaAllocation</a> allocation;</div>
<div class="line"><a class="code hl_function" href="group__group__alloc.html#gac72ee55598617e8eecca384e746bab51">vmaCreateBuffer</a>(allocator, &amp;bufferInfo, &amp;allocInfo, &amp;buffer, &amp;allocation, <span class="keyword">nullptr</span>);</div>
<div class="ttc" id="agroup__group__alloc_html_ggad9889c10c798b040d59c92f257cae597a11da372cc3a82931c5e5d6146cd9dd1f"><div class="ttname"><a href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a11da372cc3a82931c5e5d6146cd9dd1f">VMA_ALLOCATION_CREATE_MAPPED_BIT</a></div><div class="ttdeci">@ VMA_ALLOCATION_CREATE_MAPPED_BIT</div><div class="ttdoc">Set this flag to use a memory that will be persistently mapped and retrieve pointer to it.</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:549</div></div>
<div class="ttc" id="agroup__group__alloc_html_ggad9889c10c798b040d59c92f257cae597add61238d98e20917b9a06c617763f492"><div class="ttname"><a href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597add61238d98e20917b9a06c617763f492">VMA_ALLOCATION_CREATE_HOST_ACCESS_RANDOM_BIT</a></div><div class="ttdeci">@ VMA_ALLOCATION_CREATE_HOST_ACCESS_RANDOM_BIT</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:610</div></div>
<div class="ttc" id="astruct_vma_allocation_create_info_html_a7fe8d81a1ad10b2a2faacacee5b15d6d"><div class="ttname"><a href="struct_vma_allocation_create_info.html#a7fe8d81a1ad10b2a2faacacee5b15d6d">VmaAllocationCreateInfo::preferredFlags</a></div><div class="ttdeci">VkMemoryPropertyFlags preferredFlags</div><div class="ttdoc">Flags that preferably should be set in a memory type chosen for an allocation.</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:1240</div></div>
<div class="ttc" id="astruct_vma_allocation_create_info_html_a9166390303ff42d783305bc31c2b6b90"><div class="ttname"><a href="struct_vma_allocation_create_info.html#a9166390303ff42d783305bc31c2b6b90">VmaAllocationCreateInfo::requiredFlags</a></div><div class="ttdeci">VkMemoryPropertyFlags requiredFlags</div><div class="ttdoc">Flags that must be set in a Memory Type chosen for an allocation.</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:1235</div></div>
</div><!-- fragment --><p >A memory type is chosen that has all the required flags and as many preferred flags set as possible.</p>
<p >Value passed in <a class="el" href="struct_vma_allocation_create_info.html#accb8b06b1f677d858cb9af20705fa910" title="Intended usage of memory.">VmaAllocationCreateInfo::usage</a> is internally converted to a set of required and preferred flags, plus some extra "magic" (heuristics).</p>
<h1><a class="anchor" id="choosing_memory_type_explicit_memory_types"></a>
Explicit memory types</h1>
<p >If you inspected memory types available on the physical device and you have a preference for memory types that you want to use, you can fill member <a class="el" href="struct_vma_allocation_create_info.html#a3bf940c0271d85d6ba32a4d820075055" title="Bitmask containing one bit set for every memory type acceptable for this allocation.">VmaAllocationCreateInfo::memoryTypeBits</a>. It is a bit mask, where each bit set means that a memory type with that index is allowed to be used for the allocation. Special value 0, just like <code>UINT32_MAX</code>, means there are no restrictions to memory type index.</p>
<p >Please note that this member is NOT just a memory type index. Still you can use it to choose just one, specific memory type. For example, if you already determined that your buffer should be created in memory type 2, use following code:</p>
<div class="fragment"><div class="line">uint32_t memoryTypeIndex = 2;</div>
<div class="line"> </div>
<div class="line"><a class="code hl_struct" href="struct_vma_allocation_create_info.html">VmaAllocationCreateInfo</a> allocInfo = {};</div>
<div class="line">allocInfo.<a class="code hl_variable" href="struct_vma_allocation_create_info.html#a3bf940c0271d85d6ba32a4d820075055">memoryTypeBits</a> = 1u &lt;&lt; memoryTypeIndex;</div>
<div class="line"> </div>
<div class="line">VkBuffer buffer;</div>
<div class="line"><a class="code hl_struct" href="struct_vma_allocation.html">VmaAllocation</a> allocation;</div>
<div class="line"><a class="code hl_function" href="group__group__alloc.html#gac72ee55598617e8eecca384e746bab51">vmaCreateBuffer</a>(allocator, &amp;bufferInfo, &amp;allocInfo, &amp;buffer, &amp;allocation, <span class="keyword">nullptr</span>);</div>
<div class="ttc" id="astruct_vma_allocation_create_info_html_a3bf940c0271d85d6ba32a4d820075055"><div class="ttname"><a href="struct_vma_allocation_create_info.html#a3bf940c0271d85d6ba32a4d820075055">VmaAllocationCreateInfo::memoryTypeBits</a></div><div class="ttdeci">uint32_t memoryTypeBits</div><div class="ttdoc">Bitmask containing one bit set for every memory type acceptable for this allocation.</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:1248</div></div>
</div><!-- fragment --><h1><a class="anchor" id="choosing_memory_type_custom_memory_pools"></a>
Custom memory pools</h1>
<p >If you allocate from custom memory pool, all the ways of specifying memory requirements described above are not applicable and the aforementioned members of <a class="el" href="struct_vma_allocation_create_info.html" title="Parameters of new VmaAllocation.">VmaAllocationCreateInfo</a> structure are ignored. Memory type is selected explicitly when creating the pool and then used to make all the allocations from that pool. For further details, see <a class="el" href="custom_memory_pools.html">Custom memory pools</a>.</p>
<h1><a class="anchor" id="choosing_memory_type_dedicated_allocations"></a>
Dedicated allocations</h1>
<p >Memory for allocations is reserved out of larger block of <code>VkDeviceMemory</code> allocated from Vulkan internally. That is the main feature of this whole library. You can still request a separate memory block to be created for an allocation, just like you would do in a trivial solution without using any allocator. In that case, a buffer or image is always bound to that memory at offset 0. This is called a "dedicated allocation". You can explicitly request it by using flag <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a3fc311d855c2ff53f1090ef5c722b38f" title="Set this flag if the allocation should have its own memory block.">VMA_ALLOCATION_CREATE_DEDICATED_MEMORY_BIT</a>. The library can also internally decide to use dedicated allocation in some cases, e.g.:</p>
<ul>
<li>When the size of the allocation is large.</li>
<li>When <a class="el" href="vk_khr_dedicated_allocation.html">VK_KHR_dedicated_allocation</a> extension is enabled and it reports that dedicated allocation is required or recommended for the resource.</li>
<li>When allocation of next big memory block fails due to not enough device memory, but allocation with the exact requested size succeeds. </li>
</ul>
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<dd><a class="el" href="struct_vma_allocation.html">VmaAllocation</a></dd><dd><a class="el" href="struct_vma_allocation_create_info.html">VmaAllocationCreateInfo</a></dd><dd><a class="el" href="struct_vma_allocation_info.html">VmaAllocationInfo</a></dd><dd><a class="el" href="struct_vma_allocator.html">VmaAllocator</a></dd><dd><a class="el" href="struct_vma_allocator_create_info.html">VmaAllocatorCreateInfo</a></dd><dd><a class="el" href="struct_vma_allocator_info.html">VmaAllocatorInfo</a></dd><dd><a class="el" href="struct_vma_budget.html">VmaBudget</a></dd><dd><a class="el" href="struct_vma_defragmentation_context.html">VmaDefragmentationContext</a></dd><dd><a class="el" href="struct_vma_defragmentation_info.html">VmaDefragmentationInfo</a></dd><dd><a class="el" href="struct_vma_defragmentation_move.html">VmaDefragmentationMove</a></dd><dd><a class="el" href="struct_vma_defragmentation_pass_move_info.html">VmaDefragmentationPassMoveInfo</a></dd><dd><a class="el" href="struct_vma_defragmentation_stats.html">VmaDefragmentationStats</a></dd><dd><a class="el" href="struct_vma_detailed_statistics.html">VmaDetailedStatistics</a></dd><dd><a class="el" href="struct_vma_device_memory_callbacks.html">VmaDeviceMemoryCallbacks</a></dd><dd><a class="el" href="struct_vma_pool.html">VmaPool</a></dd><dd><a class="el" href="struct_vma_pool_create_info.html">VmaPoolCreateInfo</a></dd><dd><a class="el" href="struct_vma_statistics.html">VmaStatistics</a></dd><dd><a class="el" href="struct_vma_total_statistics.html">VmaTotalStatistics</a></dd><dd><a class="el" href="struct_vma_virtual_allocation.html">VmaVirtualAllocation</a></dd><dd><a class="el" href="struct_vma_virtual_allocation_create_info.html">VmaVirtualAllocationCreateInfo</a></dd><dd><a class="el" href="struct_vma_virtual_allocation_info.html">VmaVirtualAllocationInfo</a></dd><dd><a class="el" href="struct_vma_virtual_block.html">VmaVirtualBlock</a></dd><dd><a class="el" href="struct_vma_virtual_block_create_info.html">VmaVirtualBlockCreateInfo</a></dd><dd><a class="el" href="struct_vma_vulkan_functions.html">VmaVulkanFunctions</a></dd></dl>
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<div class="textblock"><p >Please check "CONFIGURATION SECTION" in the code to find macros that you can define before each include of this file or change directly in this file to provide your own implementation of basic facilities like assert, <code>min()</code> and <code>max()</code> functions, mutex, atomic etc. The library uses its own implementation of containers by default, but you can switch to using STL containers instead.</p>
<p >For example, define <code>VMA_ASSERT(expr)</code> before including the library to provide custom implementation of the assertion, compatible with your project. By default it is defined to standard C <code>assert(expr)</code> in <code>_DEBUG</code> configuration and empty otherwise.</p>
<h1><a class="anchor" id="config_Vulkan_functions"></a>
Pointers to Vulkan functions</h1>
<p >There are multiple ways to import pointers to Vulkan functions in the library. In the simplest case you don't need to do anything. If the compilation or linking of your program or the initialization of the <a class="el" href="struct_vma_allocator.html" title="Represents main object of this library initialized.">VmaAllocator</a> doesn't work for you, you can try to reconfigure it.</p>
<p >First, the allocator tries to fetch pointers to Vulkan functions linked statically, like this:</p>
<div class="fragment"><div class="line">m_VulkanFunctions.vkAllocateMemory = (PFN_vkAllocateMemory)vkAllocateMemory;</div>
</div><!-- fragment --><p >If you want to disable this feature, set configuration macro: <code>#define VMA_STATIC_VULKAN_FUNCTIONS 0</code>.</p>
<p >Second, you can provide the pointers yourself by setting member <a class="el" href="struct_vma_allocator_create_info.html#a3dc197be3227da7338b1643f70db36bd" title="Pointers to Vulkan functions. Can be null.">VmaAllocatorCreateInfo::pVulkanFunctions</a>. You can fetch them e.g. using functions <code>vkGetInstanceProcAddr</code> and <code>vkGetDeviceProcAddr</code> or by using a helper library like <a href="https://github.com/zeux/volk">volk</a>.</p>
<p >Third, VMA tries to fetch remaining pointers that are still null by calling <code>vkGetInstanceProcAddr</code> and <code>vkGetDeviceProcAddr</code> on its own. You need to only fill in <a class="el" href="struct_vma_vulkan_functions.html#a3eafa102f5f8915f093f40675636b849" title="Required when using VMA_DYNAMIC_VULKAN_FUNCTIONS.">VmaVulkanFunctions::vkGetInstanceProcAddr</a> and <a class="el" href="struct_vma_vulkan_functions.html#ac383ab9af127e5e136622fa4ebea9e57" title="Required when using VMA_DYNAMIC_VULKAN_FUNCTIONS.">VmaVulkanFunctions::vkGetDeviceProcAddr</a>. Other pointers will be fetched automatically. If you want to disable this feature, set configuration macro: <code>#define VMA_DYNAMIC_VULKAN_FUNCTIONS 0</code>.</p>
<p >Finally, all the function pointers required by the library (considering selected Vulkan version and enabled extensions) are checked with <code>VMA_ASSERT</code> if they are not null.</p>
<h1><a class="anchor" id="custom_memory_allocator"></a>
Custom host memory allocator</h1>
<p >If you use custom allocator for CPU memory rather than default operator <code>new</code> and <code>delete</code> from C++, you can make this library using your allocator as well by filling optional member <a class="el" href="struct_vma_allocator_create_info.html#a6e409087e3be55400d0e4ccbe43c608d" title="Custom CPU memory allocation callbacks. Optional.">VmaAllocatorCreateInfo::pAllocationCallbacks</a>. These functions will be passed to Vulkan, as well as used by the library itself to make any CPU-side allocations.</p>
<h1><a class="anchor" id="allocation_callbacks"></a>
Device memory allocation callbacks</h1>
<p >The library makes calls to <code>vkAllocateMemory()</code> and <code>vkFreeMemory()</code> internally. You can setup callbacks to be informed about these calls, e.g. for the purpose of gathering some statistics. To do it, fill optional member <a class="el" href="struct_vma_allocator_create_info.html#af1380969b5e1ea4c3184a877892d260e" title="Informative callbacks for vkAllocateMemory, vkFreeMemory. Optional.">VmaAllocatorCreateInfo::pDeviceMemoryCallbacks</a>.</p>
<h1><a class="anchor" id="heap_memory_limit"></a>
Device heap memory limit</h1>
<p >When device memory of certain heap runs out of free space, new allocations may fail (returning error code) or they may succeed, silently pushing some existing_ memory blocks from GPU VRAM to system RAM (which degrades performance). This behavior is implementation-dependent - it depends on GPU vendor and graphics driver.</p>
<p >On AMD cards it can be controlled while creating Vulkan device object by using VK_AMD_memory_overallocation_behavior extension, if available.</p>
<p >Alternatively, if you want to test how your program behaves with limited amount of Vulkan device memory available without switching your graphics card to one that really has smaller VRAM, you can use a feature of this library intended for this purpose. To do it, fill optional member <a class="el" href="struct_vma_allocator_create_info.html#a31c192aa6cbffa33279f6d9f0c47c44b" title="Either null or a pointer to an array of limits on maximum number of bytes that can be allocated out o...">VmaAllocatorCreateInfo::pHeapSizeLimit</a>. </p>
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<div class="headertitle"><div class="title">Custom memory pools </div></div>
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<div class="textblock"><p >A memory pool contains a number of <code>VkDeviceMemory</code> blocks. The library automatically creates and manages default pool for each memory type available on the device. Default memory pool automatically grows in size. Size of allocated blocks is also variable and managed automatically.</p>
<p >You can create custom pool and allocate memory out of it. It can be useful if you want to:</p>
<ul>
<li>Keep certain kind of allocations separate from others.</li>
<li>Enforce particular, fixed size of Vulkan memory blocks.</li>
<li>Limit maximum amount of Vulkan memory allocated for that pool.</li>
<li>Reserve minimum or fixed amount of Vulkan memory always preallocated for that pool.</li>
<li>Use extra parameters for a set of your allocations that are available in <a class="el" href="struct_vma_pool_create_info.html" title="Describes parameter of created VmaPool.">VmaPoolCreateInfo</a> but not in <a class="el" href="struct_vma_allocation_create_info.html" title="Parameters of new VmaAllocation.">VmaAllocationCreateInfo</a> - e.g., custom minimum alignment, custom <code>pNext</code> chain.</li>
<li>Perform defragmentation on a specific subset of your allocations.</li>
</ul>
<p >To use custom memory pools:</p>
<ol type="1">
<li>Fill <a class="el" href="struct_vma_pool_create_info.html" title="Describes parameter of created VmaPool.">VmaPoolCreateInfo</a> structure.</li>
<li>Call <a class="el" href="group__group__alloc.html#ga5c8770ded7c59c8caac6de0c2cb00b50" title="Allocates Vulkan device memory and creates VmaPool object.">vmaCreatePool()</a> to obtain <a class="el" href="struct_vma_pool.html" title="Represents custom memory pool.">VmaPool</a> handle.</li>
<li>When making an allocation, set <a class="el" href="struct_vma_allocation_create_info.html#a6272c0555cfd1fe28bff1afeb6190150" title="Pool that this allocation should be created in.">VmaAllocationCreateInfo::pool</a> to this handle. You don't need to specify any other parameters of this structure, like <code>usage</code>.</li>
</ol>
<p >Example:</p>
<div class="fragment"><div class="line"><span class="comment">// Find memoryTypeIndex for the pool.</span></div>
<div class="line">VkBufferCreateInfo sampleBufCreateInfo = { VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO };</div>
<div class="line">sampleBufCreateInfo.size = 0x10000; <span class="comment">// Doesn&#39;t matter.</span></div>
<div class="line">sampleBufCreateInfo.usage = VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT;</div>
<div class="line"> </div>
<div class="line"><a class="code hl_struct" href="struct_vma_allocation_create_info.html">VmaAllocationCreateInfo</a> sampleAllocCreateInfo = {};</div>
<div class="line">sampleAllocCreateInfo.<a class="code hl_variable" href="struct_vma_allocation_create_info.html#accb8b06b1f677d858cb9af20705fa910">usage</a> = <a class="code hl_enumvalue" href="group__group__alloc.html#ggaa5846affa1e9da3800e3e78fae2305cca27cde9026a84d34d525777baa41fce6e">VMA_MEMORY_USAGE_AUTO</a>;</div>
<div class="line"> </div>
<div class="line">uint32_t memTypeIndex;</div>
<div class="line">VkResult res = <a class="code hl_function" href="group__group__alloc.html#gae790ab9ffaf7667fb8f62523e6897888">vmaFindMemoryTypeIndexForBufferInfo</a>(allocator,</div>
<div class="line"> &amp;sampleBufCreateInfo, &amp;sampleAllocCreateInfo, &amp;memTypeIndex);</div>
<div class="line"><span class="comment">// Check res...</span></div>
<div class="line"> </div>
<div class="line"><span class="comment">// Create a pool that can have at most 2 blocks, 128 MiB each.</span></div>
<div class="line"><a class="code hl_struct" href="struct_vma_pool_create_info.html">VmaPoolCreateInfo</a> poolCreateInfo = {};</div>
<div class="line">poolCreateInfo.<a class="code hl_variable" href="struct_vma_pool_create_info.html#a596fa76b685d3f1f688f84a709a5b319">memoryTypeIndex</a> = memTypeIndex;</div>
<div class="line">poolCreateInfo.<a class="code hl_variable" href="struct_vma_pool_create_info.html#aa4265160536cdb9be821b7686c16c676">blockSize</a> = 128ull * 1024 * 1024;</div>
<div class="line">poolCreateInfo.<a class="code hl_variable" href="struct_vma_pool_create_info.html#ae41142f2834fcdc82baa4883c187b75c">maxBlockCount</a> = 2;</div>
<div class="line"> </div>
<div class="line"><a class="code hl_struct" href="struct_vma_pool.html">VmaPool</a> pool;</div>
<div class="line">res = <a class="code hl_function" href="group__group__alloc.html#ga5c8770ded7c59c8caac6de0c2cb00b50">vmaCreatePool</a>(allocator, &amp;poolCreateInfo, &amp;pool);</div>
<div class="line"><span class="comment">// Check res...</span></div>
<div class="line"> </div>
<div class="line"><span class="comment">// Allocate a buffer out of it.</span></div>
<div class="line">VkBufferCreateInfo bufCreateInfo = { VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO };</div>
<div class="line">bufCreateInfo.size = 1024;</div>
<div class="line">bufCreateInfo.usage = VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT;</div>
<div class="line"> </div>
<div class="line"><a class="code hl_struct" href="struct_vma_allocation_create_info.html">VmaAllocationCreateInfo</a> allocCreateInfo = {};</div>
<div class="line">allocCreateInfo.<a class="code hl_variable" href="struct_vma_allocation_create_info.html#a6272c0555cfd1fe28bff1afeb6190150">pool</a> = pool;</div>
<div class="line"> </div>
<div class="line">VkBuffer buf;</div>
<div class="line"><a class="code hl_struct" href="struct_vma_allocation.html">VmaAllocation</a> alloc;</div>
<div class="line">res = <a class="code hl_function" href="group__group__alloc.html#gac72ee55598617e8eecca384e746bab51">vmaCreateBuffer</a>(allocator, &amp;bufCreateInfo, &amp;allocCreateInfo, &amp;buf, &amp;alloc, <span class="keyword">nullptr</span>);</div>
<div class="line"><span class="comment">// Check res...</span></div>
<div class="ttc" id="agroup__group__alloc_html_ga5c8770ded7c59c8caac6de0c2cb00b50"><div class="ttname"><a href="group__group__alloc.html#ga5c8770ded7c59c8caac6de0c2cb00b50">vmaCreatePool</a></div><div class="ttdeci">VkResult vmaCreatePool(VmaAllocator allocator, const VmaPoolCreateInfo *pCreateInfo, VmaPool *pPool)</div><div class="ttdoc">Allocates Vulkan device memory and creates VmaPool object.</div></div>
<div class="ttc" id="agroup__group__alloc_html_gac72ee55598617e8eecca384e746bab51"><div class="ttname"><a href="group__group__alloc.html#gac72ee55598617e8eecca384e746bab51">vmaCreateBuffer</a></div><div class="ttdeci">VkResult vmaCreateBuffer(VmaAllocator allocator, const VkBufferCreateInfo *pBufferCreateInfo, const VmaAllocationCreateInfo *pAllocationCreateInfo, VkBuffer *pBuffer, VmaAllocation *pAllocation, VmaAllocationInfo *pAllocationInfo)</div><div class="ttdoc">Creates a new VkBuffer, allocates and binds memory for it.</div></div>
<div class="ttc" id="agroup__group__alloc_html_gae790ab9ffaf7667fb8f62523e6897888"><div class="ttname"><a href="group__group__alloc.html#gae790ab9ffaf7667fb8f62523e6897888">vmaFindMemoryTypeIndexForBufferInfo</a></div><div class="ttdeci">VkResult vmaFindMemoryTypeIndexForBufferInfo(VmaAllocator allocator, const VkBufferCreateInfo *pBufferCreateInfo, const VmaAllocationCreateInfo *pAllocationCreateInfo, uint32_t *pMemoryTypeIndex)</div><div class="ttdoc">Helps to find memoryTypeIndex, given VkBufferCreateInfo and VmaAllocationCreateInfo.</div></div>
<div class="ttc" id="agroup__group__alloc_html_ggaa5846affa1e9da3800e3e78fae2305cca27cde9026a84d34d525777baa41fce6e"><div class="ttname"><a href="group__group__alloc.html#ggaa5846affa1e9da3800e3e78fae2305cca27cde9026a84d34d525777baa41fce6e">VMA_MEMORY_USAGE_AUTO</a></div><div class="ttdeci">@ VMA_MEMORY_USAGE_AUTO</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:492</div></div>
<div class="ttc" id="astruct_vma_allocation_create_info_html"><div class="ttname"><a href="struct_vma_allocation_create_info.html">VmaAllocationCreateInfo</a></div><div class="ttdoc">Parameters of new VmaAllocation.</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:1222</div></div>
<div class="ttc" id="astruct_vma_allocation_create_info_html_a6272c0555cfd1fe28bff1afeb6190150"><div class="ttname"><a href="struct_vma_allocation_create_info.html#a6272c0555cfd1fe28bff1afeb6190150">VmaAllocationCreateInfo::pool</a></div><div class="ttdeci">VmaPool pool</div><div class="ttdoc">Pool that this allocation should be created in.</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:1254</div></div>
<div class="ttc" id="astruct_vma_allocation_create_info_html_accb8b06b1f677d858cb9af20705fa910"><div class="ttname"><a href="struct_vma_allocation_create_info.html#accb8b06b1f677d858cb9af20705fa910">VmaAllocationCreateInfo::usage</a></div><div class="ttdeci">VmaMemoryUsage usage</div><div class="ttdoc">Intended usage of memory.</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:1230</div></div>
<div class="ttc" id="astruct_vma_allocation_html"><div class="ttname"><a href="struct_vma_allocation.html">VmaAllocation</a></div><div class="ttdoc">Represents single memory allocation.</div></div>
<div class="ttc" id="astruct_vma_pool_create_info_html"><div class="ttname"><a href="struct_vma_pool_create_info.html">VmaPoolCreateInfo</a></div><div class="ttdoc">Describes parameter of created VmaPool.</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:1273</div></div>
<div class="ttc" id="astruct_vma_pool_create_info_html_a596fa76b685d3f1f688f84a709a5b319"><div class="ttname"><a href="struct_vma_pool_create_info.html#a596fa76b685d3f1f688f84a709a5b319">VmaPoolCreateInfo::memoryTypeIndex</a></div><div class="ttdeci">uint32_t memoryTypeIndex</div><div class="ttdoc">Vulkan memory type index to allocate this pool from.</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:1276</div></div>
<div class="ttc" id="astruct_vma_pool_create_info_html_aa4265160536cdb9be821b7686c16c676"><div class="ttname"><a href="struct_vma_pool_create_info.html#aa4265160536cdb9be821b7686c16c676">VmaPoolCreateInfo::blockSize</a></div><div class="ttdeci">VkDeviceSize blockSize</div><div class="ttdoc">Size of a single VkDeviceMemory block to be allocated as part of this pool, in bytes....</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:1289</div></div>
<div class="ttc" id="astruct_vma_pool_create_info_html_ae41142f2834fcdc82baa4883c187b75c"><div class="ttname"><a href="struct_vma_pool_create_info.html#ae41142f2834fcdc82baa4883c187b75c">VmaPoolCreateInfo::maxBlockCount</a></div><div class="ttdeci">size_t maxBlockCount</div><div class="ttdoc">Maximum number of blocks that can be allocated in this pool. Optional.</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:1302</div></div>
<div class="ttc" id="astruct_vma_pool_html"><div class="ttname"><a href="struct_vma_pool.html">VmaPool</a></div><div class="ttdoc">Represents custom memory pool.</div></div>
</div><!-- fragment --><p >You have to free all allocations made from this pool before destroying it.</p>
<div class="fragment"><div class="line"><a class="code hl_function" href="group__group__alloc.html#ga0d9f4e4ba5bf9aab1f1c746387753d77">vmaDestroyBuffer</a>(allocator, buf, alloc);</div>
<div class="line"><a class="code hl_function" href="group__group__alloc.html#ga5485779c8f1948238fc4e92232fa65e1">vmaDestroyPool</a>(allocator, pool);</div>
<div class="ttc" id="agroup__group__alloc_html_ga0d9f4e4ba5bf9aab1f1c746387753d77"><div class="ttname"><a href="group__group__alloc.html#ga0d9f4e4ba5bf9aab1f1c746387753d77">vmaDestroyBuffer</a></div><div class="ttdeci">void vmaDestroyBuffer(VmaAllocator allocator, VkBuffer buffer, VmaAllocation allocation)</div><div class="ttdoc">Destroys Vulkan buffer and frees allocated memory.</div></div>
<div class="ttc" id="agroup__group__alloc_html_ga5485779c8f1948238fc4e92232fa65e1"><div class="ttname"><a href="group__group__alloc.html#ga5485779c8f1948238fc4e92232fa65e1">vmaDestroyPool</a></div><div class="ttdeci">void vmaDestroyPool(VmaAllocator allocator, VmaPool pool)</div><div class="ttdoc">Destroys VmaPool object and frees Vulkan device memory.</div></div>
</div><!-- fragment --><p >New versions of this library support creating dedicated allocations in custom pools. It is supported only when <a class="el" href="struct_vma_pool_create_info.html#aa4265160536cdb9be821b7686c16c676" title="Size of a single VkDeviceMemory block to be allocated as part of this pool, in bytes....">VmaPoolCreateInfo::blockSize</a> = 0. To use this feature, set <a class="el" href="struct_vma_allocation_create_info.html#a6272c0555cfd1fe28bff1afeb6190150" title="Pool that this allocation should be created in.">VmaAllocationCreateInfo::pool</a> to the pointer to your custom pool and <a class="el" href="struct_vma_allocation_create_info.html#add09658ac14fe290ace25470ddd6d41b" title="Use VmaAllocationCreateFlagBits enum.">VmaAllocationCreateInfo::flags</a> to <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a3fc311d855c2ff53f1090ef5c722b38f" title="Set this flag if the allocation should have its own memory block.">VMA_ALLOCATION_CREATE_DEDICATED_MEMORY_BIT</a>.</p>
<dl class="section note"><dt>Note</dt><dd>Excessive use of custom pools is a common mistake when using this library. Custom pools may be useful for special purposes - when you want to keep certain type of resources separate e.g. to reserve minimum amount of memory for them or limit maximum amount of memory they can occupy. For most resources this is not needed and so it is not recommended to create <a class="el" href="struct_vma_pool.html" title="Represents custom memory pool.">VmaPool</a> objects and allocations out of them. Allocating from the default pool is sufficient.</dd></dl>
<h1><a class="anchor" id="custom_memory_pools_MemTypeIndex"></a>
Choosing memory type index</h1>
<p >When creating a pool, you must explicitly specify memory type index. To find the one suitable for your buffers or images, you can use helper functions <a class="el" href="group__group__alloc.html#gae790ab9ffaf7667fb8f62523e6897888" title="Helps to find memoryTypeIndex, given VkBufferCreateInfo and VmaAllocationCreateInfo.">vmaFindMemoryTypeIndexForBufferInfo()</a>, <a class="el" href="group__group__alloc.html#ga088da83d8eaf3ce9056d9ea0b981d472" title="Helps to find memoryTypeIndex, given VkImageCreateInfo and VmaAllocationCreateInfo.">vmaFindMemoryTypeIndexForImageInfo()</a>. You need to provide structures with example parameters of buffers or images that you are going to create in that pool.</p>
<div class="fragment"><div class="line">VkBufferCreateInfo exampleBufCreateInfo = { VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO };</div>
<div class="line">exampleBufCreateInfo.size = 1024; <span class="comment">// Doesn&#39;t matter</span></div>
<div class="line">exampleBufCreateInfo.usage = VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT;</div>
<div class="line"> </div>
<div class="line"><a class="code hl_struct" href="struct_vma_allocation_create_info.html">VmaAllocationCreateInfo</a> allocCreateInfo = {};</div>
<div class="line">allocCreateInfo.<a class="code hl_variable" href="struct_vma_allocation_create_info.html#accb8b06b1f677d858cb9af20705fa910">usage</a> = <a class="code hl_enumvalue" href="group__group__alloc.html#ggaa5846affa1e9da3800e3e78fae2305cca27cde9026a84d34d525777baa41fce6e">VMA_MEMORY_USAGE_AUTO</a>;</div>
<div class="line"> </div>
<div class="line">uint32_t memTypeIndex;</div>
<div class="line"><a class="code hl_function" href="group__group__alloc.html#gae790ab9ffaf7667fb8f62523e6897888">vmaFindMemoryTypeIndexForBufferInfo</a>(allocator, &amp;exampleBufCreateInfo, &amp;allocCreateInfo, &amp;memTypeIndex);</div>
<div class="line"> </div>
<div class="line"><a class="code hl_struct" href="struct_vma_pool_create_info.html">VmaPoolCreateInfo</a> poolCreateInfo = {};</div>
<div class="line">poolCreateInfo.<a class="code hl_variable" href="struct_vma_pool_create_info.html#a596fa76b685d3f1f688f84a709a5b319">memoryTypeIndex</a> = memTypeIndex;</div>
<div class="line"><span class="comment">// ...</span></div>
</div><!-- fragment --><p >When creating buffers/images allocated in that pool, provide following parameters:</p>
<ul>
<li><code>VkBufferCreateInfo</code>: Prefer to pass same parameters as above. Otherwise you risk creating resources in a memory type that is not suitable for them, which may result in undefined behavior. Using different <code>VK_BUFFER_USAGE_</code> flags may work, but you shouldn't create images in a pool intended for buffers or the other way around.</li>
<li><a class="el" href="struct_vma_allocation_create_info.html" title="Parameters of new VmaAllocation.">VmaAllocationCreateInfo</a>: You don't need to pass same parameters. Fill only <code>pool</code> member. Other members are ignored anyway.</li>
</ul>
<h1><a class="anchor" id="linear_algorithm"></a>
Linear allocation algorithm</h1>
<p >Each Vulkan memory block managed by this library has accompanying metadata that keeps track of used and unused regions. By default, the metadata structure and algorithm tries to find best place for new allocations among free regions to optimize memory usage. This way you can allocate and free objects in any order.</p>
<p ><img src="../gfx/Linear_allocator_1_algo_default.png" alt="Default allocation algorithm" class="inline"/></p>
<p >Sometimes there is a need to use simpler, linear allocation algorithm. You can create custom pool that uses such algorithm by adding flag <a class="el" href="group__group__alloc.html#gga9a7c45f9c863695d98c83fa5ac940fe7a13c8a444197c67866be9cb05599fc726" title="Enables alternative, linear allocation algorithm in this pool.">VMA_POOL_CREATE_LINEAR_ALGORITHM_BIT</a> to <a class="el" href="struct_vma_pool_create_info.html#a8405139f63d078340ae74513a59f5446" title="Use combination of VmaPoolCreateFlagBits.">VmaPoolCreateInfo::flags</a> while creating <a class="el" href="struct_vma_pool.html" title="Represents custom memory pool.">VmaPool</a> object. Then an alternative metadata management is used. It always creates new allocations after last one and doesn't reuse free regions after allocations freed in the middle. It results in better allocation performance and less memory consumed by metadata.</p>
<p ><img src="../gfx/Linear_allocator_2_algo_linear.png" alt="Linear allocation algorithm" class="inline"/></p>
<p >With this one flag, you can create a custom pool that can be used in many ways: free-at-once, stack, double stack, and ring buffer. See below for details. You don't need to specify explicitly which of these options you are going to use - it is detected automatically.</p>
<h2><a class="anchor" id="linear_algorithm_free_at_once"></a>
Free-at-once</h2>
<p >In a pool that uses linear algorithm, you still need to free all the allocations individually, e.g. by using <a class="el" href="group__group__alloc.html#ga5fea5518972ae9094b1526cbcb19b05f" title="Frees memory previously allocated using vmaAllocateMemory(), vmaAllocateMemoryForBuffer(),...">vmaFreeMemory()</a> or <a class="el" href="group__group__alloc.html#ga0d9f4e4ba5bf9aab1f1c746387753d77" title="Destroys Vulkan buffer and frees allocated memory.">vmaDestroyBuffer()</a>. You can free them in any order. New allocations are always made after last one - free space in the middle is not reused. However, when you release all the allocation and the pool becomes empty, allocation starts from the beginning again. This way you can use linear algorithm to speed up creation of allocations that you are going to release all at once.</p>
<p ><img src="../gfx/Linear_allocator_3_free_at_once.png" alt="Free-at-once" class="inline"/></p>
<p >This mode is also available for pools created with <a class="el" href="struct_vma_pool_create_info.html#ae41142f2834fcdc82baa4883c187b75c" title="Maximum number of blocks that can be allocated in this pool. Optional.">VmaPoolCreateInfo::maxBlockCount</a> value that allows multiple memory blocks.</p>
<h2><a class="anchor" id="linear_algorithm_stack"></a>
Stack</h2>
<p >When you free an allocation that was created last, its space can be reused. Thanks to this, if you always release allocations in the order opposite to their creation (LIFO - Last In First Out), you can achieve behavior of a stack.</p>
<p ><img src="../gfx/Linear_allocator_4_stack.png" alt="Stack" class="inline"/></p>
<p >This mode is also available for pools created with <a class="el" href="struct_vma_pool_create_info.html#ae41142f2834fcdc82baa4883c187b75c" title="Maximum number of blocks that can be allocated in this pool. Optional.">VmaPoolCreateInfo::maxBlockCount</a> value that allows multiple memory blocks.</p>
<h2><a class="anchor" id="linear_algorithm_double_stack"></a>
Double stack</h2>
<p >The space reserved by a custom pool with linear algorithm may be used by two stacks:</p>
<ul>
<li>First, default one, growing up from offset 0.</li>
<li>Second, "upper" one, growing down from the end towards lower offsets.</li>
</ul>
<p >To make allocation from the upper stack, add flag <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a42ba3a2d2c7117953210b7c3ef8da0df">VMA_ALLOCATION_CREATE_UPPER_ADDRESS_BIT</a> to <a class="el" href="struct_vma_allocation_create_info.html#add09658ac14fe290ace25470ddd6d41b" title="Use VmaAllocationCreateFlagBits enum.">VmaAllocationCreateInfo::flags</a>.</p>
<p ><img src="../gfx/Linear_allocator_7_double_stack.png" alt="Double stack" class="inline"/></p>
<p >Double stack is available only in pools with one memory block - <a class="el" href="struct_vma_pool_create_info.html#ae41142f2834fcdc82baa4883c187b75c" title="Maximum number of blocks that can be allocated in this pool. Optional.">VmaPoolCreateInfo::maxBlockCount</a> must be 1. Otherwise behavior is undefined.</p>
<p >When the two stacks' ends meet so there is not enough space between them for a new allocation, such allocation fails with usual <code>VK_ERROR_OUT_OF_DEVICE_MEMORY</code> error.</p>
<h2><a class="anchor" id="linear_algorithm_ring_buffer"></a>
Ring buffer</h2>
<p >When you free some allocations from the beginning and there is not enough free space for a new one at the end of a pool, allocator's "cursor" wraps around to the beginning and starts allocation there. Thanks to this, if you always release allocations in the same order as you created them (FIFO - First In First Out), you can achieve behavior of a ring buffer / queue.</p>
<p ><img src="../gfx/Linear_allocator_5_ring_buffer.png" alt="Ring buffer" class="inline"/></p>
<p >Ring buffer is available only in pools with one memory block - <a class="el" href="struct_vma_pool_create_info.html#ae41142f2834fcdc82baa4883c187b75c" title="Maximum number of blocks that can be allocated in this pool. Optional.">VmaPoolCreateInfo::maxBlockCount</a> must be 1. Otherwise behavior is undefined.</p>
<dl class="section note"><dt>Note</dt><dd><a class="el" href="defragmentation.html">Defragmentation</a> is not supported in custom pools created with <a class="el" href="group__group__alloc.html#gga9a7c45f9c863695d98c83fa5ac940fe7a13c8a444197c67866be9cb05599fc726" title="Enables alternative, linear allocation algorithm in this pool.">VMA_POOL_CREATE_LINEAR_ALGORITHM_BIT</a>. </dd></dl>
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<div class="headertitle"><div class="title">Debugging incorrect memory usage </div></div>
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<div class="textblock"><p >If you suspect a bug with memory usage, like usage of uninitialized memory or memory being overwritten out of bounds of an allocation, you can use debug features of this library to verify this.</p>
<h1><a class="anchor" id="debugging_memory_usage_initialization"></a>
Memory initialization</h1>
<p >If you experience a bug with incorrect and nondeterministic data in your program and you suspect uninitialized memory to be used, you can enable automatic memory initialization to verify this. To do it, define macro <code>VMA_DEBUG_INITIALIZE_ALLOCATIONS</code> to 1.</p>
<div class="fragment"><div class="line"><span class="preprocessor">#define VMA_DEBUG_INITIALIZE_ALLOCATIONS 1</span></div>
<div class="line"><span class="preprocessor">#include &quot;<a class="code" href="vk__mem__alloc_8h.html">vk_mem_alloc.h</a>&quot;</span></div>
<div class="ttc" id="avk__mem__alloc_8h_html"><div class="ttname"><a href="vk__mem__alloc_8h.html">vk_mem_alloc.h</a></div></div>
</div><!-- fragment --><p >It makes memory of new allocations initialized to bit pattern <code>0xDCDCDCDC</code>. Before an allocation is destroyed, its memory is filled with bit pattern <code>0xEFEFEFEF</code>. Memory is automatically mapped and unmapped if necessary.</p>
<p >If you find these values while debugging your program, good chances are that you incorrectly read Vulkan memory that is allocated but not initialized, or already freed, respectively.</p>
<p >Memory initialization works only with memory types that are <code>HOST_VISIBLE</code> and with allocations that can be mapped. It works also with dedicated allocations.</p>
<h1><a class="anchor" id="debugging_memory_usage_margins"></a>
Margins</h1>
<p >By default, allocations are laid out in memory blocks next to each other if possible (considering required alignment, <code>bufferImageGranularity</code>, and <code>nonCoherentAtomSize</code>).</p>
<p ><img src="../gfx/Margins_1.png" alt="Allocations without margin" class="inline"/></p>
<p >Define macro <code>VMA_DEBUG_MARGIN</code> to some non-zero value (e.g. 16) to enforce specified number of bytes as a margin after every allocation.</p>
<div class="fragment"><div class="line"><span class="preprocessor">#define VMA_DEBUG_MARGIN 16</span></div>
<div class="line"><span class="preprocessor">#include &quot;<a class="code" href="vk__mem__alloc_8h.html">vk_mem_alloc.h</a>&quot;</span></div>
</div><!-- fragment --><p ><img src="../gfx/Margins_2.png" alt="Allocations with margin" class="inline"/></p>
<p >If your bug goes away after enabling margins, it means it may be caused by memory being overwritten outside of allocation boundaries. It is not 100% certain though. Change in application behavior may also be caused by different order and distribution of allocations across memory blocks after margins are applied.</p>
<p >Margins work with all types of memory.</p>
<p >Margin is applied only to allocations made out of memory blocks and not to dedicated allocations, which have their own memory block of specific size. It is thus not applied to allocations made using <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a3fc311d855c2ff53f1090ef5c722b38f" title="Set this flag if the allocation should have its own memory block.">VMA_ALLOCATION_CREATE_DEDICATED_MEMORY_BIT</a> flag or those automatically decided to put into dedicated allocations, e.g. due to its large size or recommended by VK_KHR_dedicated_allocation extension.</p>
<p >Margins appear in <a class="el" href="statistics.html#statistics_json_dump">JSON dump</a> as part of free space.</p>
<p >Note that enabling margins increases memory usage and fragmentation.</p>
<p >Margins do not apply to <a class="el" href="virtual_allocator.html">Virtual allocator</a>.</p>
<h1><a class="anchor" id="debugging_memory_usage_corruption_detection"></a>
Corruption detection</h1>
<p >You can additionally define macro <code>VMA_DEBUG_DETECT_CORRUPTION</code> to 1 to enable validation of contents of the margins.</p>
<div class="fragment"><div class="line"><span class="preprocessor">#define VMA_DEBUG_MARGIN 16</span></div>
<div class="line"><span class="preprocessor">#define VMA_DEBUG_DETECT_CORRUPTION 1</span></div>
<div class="line"><span class="preprocessor">#include &quot;<a class="code" href="vk__mem__alloc_8h.html">vk_mem_alloc.h</a>&quot;</span></div>
</div><!-- fragment --><p >When this feature is enabled, number of bytes specified as <code>VMA_DEBUG_MARGIN</code> (it must be multiply of 4) after every allocation is filled with a magic number. This idea is also know as "canary". Memory is automatically mapped and unmapped if necessary.</p>
<p >This number is validated automatically when the allocation is destroyed. If it is not equal to the expected value, <code>VMA_ASSERT()</code> is executed. It clearly means that either CPU or GPU overwritten the memory outside of boundaries of the allocation, which indicates a serious bug.</p>
<p >You can also explicitly request checking margins of all allocations in all memory blocks that belong to specified memory types by using function <a class="el" href="group__group__alloc.html#ga49329a7f030dafcf82f7b73334c22e98" title="Checks magic number in margins around all allocations in given memory types (in both default and cust...">vmaCheckCorruption()</a>, or in memory blocks that belong to specified custom pool, by using function <a class="el" href="group__group__alloc.html#gad535935619c7a549bf837e1bb0068f89" title="Checks magic number in margins around all allocations in given memory pool in search for corruptions.">vmaCheckPoolCorruption()</a>.</p>
<p >Margin validation (corruption detection) works only for memory types that are <code>HOST_VISIBLE</code> and <code>HOST_COHERENT</code>. </p>
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<div class="headertitle"><div class="title">Defragmentation </div></div>
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<div class="textblock"><p >Interleaved allocations and deallocations of many objects of varying size can cause fragmentation over time, which can lead to a situation where the library is unable to find a continuous range of free memory for a new allocation despite there is enough free space, just scattered across many small free ranges between existing allocations.</p>
<p >To mitigate this problem, you can use defragmentation feature. It doesn't happen automatically though and needs your cooperation, because VMA is a low level library that only allocates memory. It cannot recreate buffers and images in a new place as it doesn't remember the contents of <code>VkBufferCreateInfo</code> / <code>VkImageCreateInfo</code> structures. It cannot copy their contents as it doesn't record any commands to a command buffer.</p>
<p >Example:</p>
<div class="fragment"><div class="line"><a class="code hl_struct" href="struct_vma_defragmentation_info.html">VmaDefragmentationInfo</a> defragInfo = {};</div>
<div class="line">defragInfo.<a class="code hl_variable" href="struct_vma_defragmentation_info.html#a18dd2097d8ab2976cdc7dd3e7b978bd4">pool</a> = myPool;</div>
<div class="line">defragInfo.<a class="code hl_variable" href="struct_vma_defragmentation_info.html#a3e23080c978ecf3abb3180f5b2069da7">flags</a> = <a class="code hl_enumvalue" href="group__group__alloc.html#gga6552a65b71d16f378c6994b3ceaef50ca2e6469bcf5a094776ceb5d118263f04b">VMA_DEFRAGMENTATION_FLAG_ALGORITHM_FAST_BIT</a>;</div>
<div class="line"> </div>
<div class="line"><a class="code hl_struct" href="struct_vma_defragmentation_context.html">VmaDefragmentationContext</a> defragCtx;</div>
<div class="line">VkResult res = <a class="code hl_function" href="group__group__alloc.html#gac3335566858b45541fa9c0d7a6bbb57e">vmaBeginDefragmentation</a>(allocator, &amp;defragInfo, &amp;defragCtx);</div>
<div class="line"><span class="comment">// Check res...</span></div>
<div class="line"> </div>
<div class="line"><span class="keywordflow">for</span>(;;)</div>
<div class="line">{</div>
<div class="line"> <a class="code hl_struct" href="struct_vma_defragmentation_pass_move_info.html">VmaDefragmentationPassMoveInfo</a> pass;</div>
<div class="line"> res = <a class="code hl_function" href="group__group__alloc.html#ga980d7da2ce3b1fd5c8b8476bc362cc00">vmaBeginDefragmentationPass</a>(allocator, defragCtx, &amp;pass);</div>
<div class="line"> <span class="keywordflow">if</span>(res == VK_SUCCESS)</div>
<div class="line"> <span class="keywordflow">break</span>;</div>
<div class="line"> <span class="keywordflow">else</span> <span class="keywordflow">if</span>(res != VK_INCOMPLETE)</div>
<div class="line"> <span class="comment">// Handle error...</span></div>
<div class="line"> </div>
<div class="line"> <span class="keywordflow">for</span>(uint32_t i = 0; i &lt; pass.<a class="code hl_variable" href="struct_vma_defragmentation_pass_move_info.html#a1b3e18c23f9691f35baf183e615c4408">moveCount</a>; ++i)</div>
<div class="line"> {</div>
<div class="line"> <span class="comment">// Inspect pass.pMoves[i].srcAllocation, identify what buffer/image it represents.</span></div>
<div class="line"> <a class="code hl_struct" href="struct_vma_allocation_info.html">VmaAllocationInfo</a> allocInfo;</div>
<div class="line"> <a class="code hl_function" href="group__group__alloc.html#ga86dd08aba8633bfa4ad0df2e76481d8b">vmaGetAllocationInfo</a>(allocator, pMoves[i].srcAllocation, &amp;allocInfo);</div>
<div class="line"> MyEngineResourceData* resData = (MyEngineResourceData*)allocInfo.<a class="code hl_variable" href="struct_vma_allocation_info.html#adc507656149c04de7ed95d0042ba2a13">pUserData</a>;</div>
<div class="line"> </div>
<div class="line"> <span class="comment">// Recreate and bind this buffer/image at: pass.pMoves[i].dstMemory, pass.pMoves[i].dstOffset.</span></div>
<div class="line"> VkImageCreateInfo imgCreateInfo = ...</div>
<div class="line"> VkImage newImg;</div>
<div class="line"> res = vkCreateImage(device, &amp;imgCreateInfo, <span class="keyword">nullptr</span>, &amp;newImg);</div>
<div class="line"> <span class="comment">// Check res...</span></div>
<div class="line"> res = <a class="code hl_function" href="group__group__alloc.html#ga3d3ca45799923aa5d138e9e5f9eb2da5">vmaBindImageMemory</a>(allocator, pMoves[i].dstTmpAllocation, newImg);</div>
<div class="line"> <span class="comment">// Check res...</span></div>
<div class="line"> </div>
<div class="line"> <span class="comment">// Issue a vkCmdCopyBuffer/vkCmdCopyImage to copy its content to the new place.</span></div>
<div class="line"> vkCmdCopyImage(cmdBuf, resData-&gt;img, ..., newImg, ...);</div>
<div class="line"> }</div>
<div class="line"> </div>
<div class="line"> <span class="comment">// Make sure the copy commands finished executing.</span></div>
<div class="line"> vkWaitForFences(...);</div>
<div class="line"> </div>
<div class="line"> <span class="comment">// Destroy old buffers/images bound with pass.pMoves[i].srcAllocation.</span></div>
<div class="line"> <span class="keywordflow">for</span>(uint32_t i = 0; i &lt; pass.<a class="code hl_variable" href="struct_vma_defragmentation_pass_move_info.html#a1b3e18c23f9691f35baf183e615c4408">moveCount</a>; ++i)</div>
<div class="line"> {</div>
<div class="line"> <span class="comment">// ...</span></div>
<div class="line"> vkDestroyImage(device, resData-&gt;img, <span class="keyword">nullptr</span>);</div>
<div class="line"> }</div>
<div class="line"> </div>
<div class="line"> <span class="comment">// Update appropriate descriptors to point to the new places...</span></div>
<div class="line"> </div>
<div class="line"> res = <a class="code hl_function" href="group__group__alloc.html#gaded05a445742a00718ee766144c5c226">vmaEndDefragmentationPass</a>(allocator, defragCtx, &amp;pass);</div>
<div class="line"> <span class="keywordflow">if</span>(res == VK_SUCCESS)</div>
<div class="line"> <span class="keywordflow">break</span>;</div>
<div class="line"> <span class="keywordflow">else</span> <span class="keywordflow">if</span>(res != VK_INCOMPLETE)</div>
<div class="line"> <span class="comment">// Handle error...</span></div>
<div class="line">}</div>
<div class="line"> </div>
<div class="line"><a class="code hl_function" href="group__group__alloc.html#ga59f01ca3d53d50b7cca9b442b77a3e87">vmaEndDefragmentation</a>(allocator, defragCtx, <span class="keyword">nullptr</span>);</div>
<div class="ttc" id="agroup__group__alloc_html_ga3d3ca45799923aa5d138e9e5f9eb2da5"><div class="ttname"><a href="group__group__alloc.html#ga3d3ca45799923aa5d138e9e5f9eb2da5">vmaBindImageMemory</a></div><div class="ttdeci">VkResult vmaBindImageMemory(VmaAllocator allocator, VmaAllocation allocation, VkImage image)</div><div class="ttdoc">Binds image to allocation.</div></div>
<div class="ttc" id="agroup__group__alloc_html_ga59f01ca3d53d50b7cca9b442b77a3e87"><div class="ttname"><a href="group__group__alloc.html#ga59f01ca3d53d50b7cca9b442b77a3e87">vmaEndDefragmentation</a></div><div class="ttdeci">void vmaEndDefragmentation(VmaAllocator allocator, VmaDefragmentationContext context, VmaDefragmentationStats *pStats)</div><div class="ttdoc">Ends defragmentation process.</div></div>
<div class="ttc" id="agroup__group__alloc_html_ga86dd08aba8633bfa4ad0df2e76481d8b"><div class="ttname"><a href="group__group__alloc.html#ga86dd08aba8633bfa4ad0df2e76481d8b">vmaGetAllocationInfo</a></div><div class="ttdeci">void vmaGetAllocationInfo(VmaAllocator allocator, VmaAllocation allocation, VmaAllocationInfo *pAllocationInfo)</div><div class="ttdoc">Returns current information about specified allocation.</div></div>
<div class="ttc" id="agroup__group__alloc_html_ga980d7da2ce3b1fd5c8b8476bc362cc00"><div class="ttname"><a href="group__group__alloc.html#ga980d7da2ce3b1fd5c8b8476bc362cc00">vmaBeginDefragmentationPass</a></div><div class="ttdeci">VkResult vmaBeginDefragmentationPass(VmaAllocator allocator, VmaDefragmentationContext context, VmaDefragmentationPassMoveInfo *pPassInfo)</div><div class="ttdoc">Starts single defragmentation pass.</div></div>
<div class="ttc" id="agroup__group__alloc_html_gac3335566858b45541fa9c0d7a6bbb57e"><div class="ttname"><a href="group__group__alloc.html#gac3335566858b45541fa9c0d7a6bbb57e">vmaBeginDefragmentation</a></div><div class="ttdeci">VkResult vmaBeginDefragmentation(VmaAllocator allocator, const VmaDefragmentationInfo *pInfo, VmaDefragmentationContext *pContext)</div><div class="ttdoc">Begins defragmentation process.</div></div>
<div class="ttc" id="agroup__group__alloc_html_gaded05a445742a00718ee766144c5c226"><div class="ttname"><a href="group__group__alloc.html#gaded05a445742a00718ee766144c5c226">vmaEndDefragmentationPass</a></div><div class="ttdeci">VkResult vmaEndDefragmentationPass(VmaAllocator allocator, VmaDefragmentationContext context, VmaDefragmentationPassMoveInfo *pPassInfo)</div><div class="ttdoc">Ends single defragmentation pass.</div></div>
<div class="ttc" id="agroup__group__alloc_html_gga6552a65b71d16f378c6994b3ceaef50ca2e6469bcf5a094776ceb5d118263f04b"><div class="ttname"><a href="group__group__alloc.html#gga6552a65b71d16f378c6994b3ceaef50ca2e6469bcf5a094776ceb5d118263f04b">VMA_DEFRAGMENTATION_FLAG_ALGORITHM_FAST_BIT</a></div><div class="ttdeci">@ VMA_DEFRAGMENTATION_FLAG_ALGORITHM_FAST_BIT</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:706</div></div>
<div class="ttc" id="astruct_vma_allocation_info_html"><div class="ttname"><a href="struct_vma_allocation_info.html">VmaAllocationInfo</a></div><div class="ttdoc">Parameters of VmaAllocation objects, that can be retrieved using function vmaGetAllocationInfo().</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:1337</div></div>
<div class="ttc" id="astruct_vma_allocation_info_html_adc507656149c04de7ed95d0042ba2a13"><div class="ttname"><a href="struct_vma_allocation_info.html#adc507656149c04de7ed95d0042ba2a13">VmaAllocationInfo::pUserData</a></div><div class="ttdeci">void * pUserData</div><div class="ttdoc">Custom general-purpose pointer that was passed as VmaAllocationCreateInfo::pUserData or set using vma...</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:1384</div></div>
<div class="ttc" id="astruct_vma_defragmentation_context_html"><div class="ttname"><a href="struct_vma_defragmentation_context.html">VmaDefragmentationContext</a></div><div class="ttdoc">An opaque object that represents started defragmentation process.</div></div>
<div class="ttc" id="astruct_vma_defragmentation_info_html"><div class="ttname"><a href="struct_vma_defragmentation_info.html">VmaDefragmentationInfo</a></div><div class="ttdoc">Parameters for defragmentation.</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:1400</div></div>
<div class="ttc" id="astruct_vma_defragmentation_info_html_a18dd2097d8ab2976cdc7dd3e7b978bd4"><div class="ttname"><a href="struct_vma_defragmentation_info.html#a18dd2097d8ab2976cdc7dd3e7b978bd4">VmaDefragmentationInfo::pool</a></div><div class="ttdeci">VmaPool pool</div><div class="ttdoc">Custom pool to be defragmented.</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:1407</div></div>
<div class="ttc" id="astruct_vma_defragmentation_info_html_a3e23080c978ecf3abb3180f5b2069da7"><div class="ttname"><a href="struct_vma_defragmentation_info.html#a3e23080c978ecf3abb3180f5b2069da7">VmaDefragmentationInfo::flags</a></div><div class="ttdeci">VmaDefragmentationFlags flags</div><div class="ttdoc">Use combination of VmaDefragmentationFlagBits.</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:1402</div></div>
<div class="ttc" id="astruct_vma_defragmentation_pass_move_info_html"><div class="ttname"><a href="struct_vma_defragmentation_pass_move_info.html">VmaDefragmentationPassMoveInfo</a></div><div class="ttdoc">Parameters for incremental defragmentation steps.</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:1441</div></div>
<div class="ttc" id="astruct_vma_defragmentation_pass_move_info_html_a1b3e18c23f9691f35baf183e615c4408"><div class="ttname"><a href="struct_vma_defragmentation_pass_move_info.html#a1b3e18c23f9691f35baf183e615c4408">VmaDefragmentationPassMoveInfo::moveCount</a></div><div class="ttdeci">uint32_t moveCount</div><div class="ttdoc">Number of elements in the pMoves array.</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:1443</div></div>
</div><!-- fragment --><p >Although functions like <a class="el" href="group__group__alloc.html#gac72ee55598617e8eecca384e746bab51" title="Creates a new VkBuffer, allocates and binds memory for it.">vmaCreateBuffer()</a>, <a class="el" href="group__group__alloc.html#ga02a94f25679275851a53e82eacbcfc73" title="Function similar to vmaCreateBuffer().">vmaCreateImage()</a>, <a class="el" href="group__group__alloc.html#ga0d9f4e4ba5bf9aab1f1c746387753d77" title="Destroys Vulkan buffer and frees allocated memory.">vmaDestroyBuffer()</a>, <a class="el" href="group__group__alloc.html#gae50d2cb3b4a3bfd4dd40987234e50e7e" title="Destroys Vulkan image and frees allocated memory.">vmaDestroyImage()</a> create/destroy an allocation and a buffer/image at once, these are just a shortcut for creating the resource, allocating memory, and binding them together. Defragmentation works on memory allocations only. You must handle the rest manually. Defragmentation is an iterative process that should repreat "passes" as long as related functions return <code>VK_INCOMPLETE</code> not <code>VK_SUCCESS</code>. In each pass:</p>
<ol type="1">
<li><a class="el" href="group__group__alloc.html#ga980d7da2ce3b1fd5c8b8476bc362cc00" title="Starts single defragmentation pass.">vmaBeginDefragmentationPass()</a> function call:<ul>
<li>Calculates and returns the list of allocations to be moved in this pass. Note this can be a time-consuming process.</li>
<li>Reserves destination memory for them by creating temporary destination allocations that you can query for their <code>VkDeviceMemory</code> + offset using <a class="el" href="group__group__alloc.html#ga86dd08aba8633bfa4ad0df2e76481d8b" title="Returns current information about specified allocation.">vmaGetAllocationInfo()</a>.</li>
</ul>
</li>
<li>Inside the pass, <b>you should</b>:<ul>
<li>Inspect the returned list of allocations to be moved.</li>
<li>Create new buffers/images and bind them at the returned destination temporary allocations.</li>
<li>Copy data from source to destination resources if necessary.</li>
<li>Destroy the source buffers/images, but NOT their allocations.</li>
</ul>
</li>
<li><a class="el" href="group__group__alloc.html#gaded05a445742a00718ee766144c5c226" title="Ends single defragmentation pass.">vmaEndDefragmentationPass()</a> function call:<ul>
<li>Frees the source memory reserved for the allocations that are moved.</li>
<li>Modifies source <a class="el" href="struct_vma_allocation.html" title="Represents single memory allocation.">VmaAllocation</a> objects that are moved to point to the destination reserved memory.</li>
<li>Frees <code>VkDeviceMemory</code> blocks that became empty.</li>
</ul>
</li>
</ol>
<p >Unlike in previous iterations of the defragmentation API, there is no list of "movable" allocations passed as a parameter. Defragmentation algorithm tries to move all suitable allocations. You can, however, refuse to move some of them inside a defragmentation pass, by setting <code>pass.pMoves[i].operation</code> to <a class="el" href="group__group__alloc.html#ggada9e3861caf96f08894b0bcc160ec257ad25bc6f816b226b4fd5170e845f218d2" title="Set this value if you cannot move the allocation. New place reserved at dstTmpAllocation will be free...">VMA_DEFRAGMENTATION_MOVE_OPERATION_IGNORE</a>. This is not recommended and may result in suboptimal packing of the allocations after defragmentation. If you cannot ensure any allocation can be moved, it is better to keep movable allocations separate in a custom pool.</p>
<p >Inside a pass, for each allocation that should be moved:</p>
<ul>
<li>You should copy its data from the source to the destination place by calling e.g. <code>vkCmdCopyBuffer()</code>, <code>vkCmdCopyImage()</code>.<ul>
<li>You need to make sure these commands finished executing before destroying the source buffers/images and before calling <a class="el" href="group__group__alloc.html#gaded05a445742a00718ee766144c5c226" title="Ends single defragmentation pass.">vmaEndDefragmentationPass()</a>.</li>
</ul>
</li>
<li>If a resource doesn't contain any meaningful data, e.g. it is a transient color attachment image to be cleared, filled, and used temporarily in each rendering frame, you can just recreate this image without copying its data.</li>
<li>If the resource is in <code>HOST_VISIBLE</code> and <code>HOST_CACHED</code> memory, you can copy its data on the CPU using <code>memcpy()</code>.</li>
<li>If you cannot move the allocation, you can set <code>pass.pMoves[i].operation</code> to <a class="el" href="group__group__alloc.html#ggada9e3861caf96f08894b0bcc160ec257ad25bc6f816b226b4fd5170e845f218d2" title="Set this value if you cannot move the allocation. New place reserved at dstTmpAllocation will be free...">VMA_DEFRAGMENTATION_MOVE_OPERATION_IGNORE</a>. This will cancel the move.<ul>
<li><a class="el" href="group__group__alloc.html#gaded05a445742a00718ee766144c5c226" title="Ends single defragmentation pass.">vmaEndDefragmentationPass()</a> will then free the destination memory not the source memory of the allocation, leaving it unchanged.</li>
</ul>
</li>
<li>If you decide the allocation is unimportant and can be destroyed instead of moved (e.g. it wasn't used for long time), you can set <code>pass.pMoves[i].operation</code> to <a class="el" href="group__group__alloc.html#ggada9e3861caf96f08894b0bcc160ec257a9786f8492a9be2c03bd26395e352ab85" title="Set this value if you decide to abandon the allocation and you destroyed the buffer/image....">VMA_DEFRAGMENTATION_MOVE_OPERATION_DESTROY</a>.<ul>
<li><a class="el" href="group__group__alloc.html#gaded05a445742a00718ee766144c5c226" title="Ends single defragmentation pass.">vmaEndDefragmentationPass()</a> will then free both source and destination memory, and will destroy the source <a class="el" href="struct_vma_allocation.html" title="Represents single memory allocation.">VmaAllocation</a> object.</li>
</ul>
</li>
</ul>
<p >You can defragment a specific custom pool by setting <a class="el" href="struct_vma_defragmentation_info.html#a18dd2097d8ab2976cdc7dd3e7b978bd4" title="Custom pool to be defragmented.">VmaDefragmentationInfo::pool</a> (like in the example above) or all the default pools by setting this member to null.</p>
<p >Defragmentation is always performed in each pool separately. Allocations are never moved between different Vulkan memory types. The size of the destination memory reserved for a moved allocation is the same as the original one. Alignment of an allocation as it was determined using <code>vkGetBufferMemoryRequirements()</code> etc. is also respected after defragmentation. Buffers/images should be recreated with the same <code>VkBufferCreateInfo</code> / <code>VkImageCreateInfo</code> parameters as the original ones.</p>
<p >You can perform the defragmentation incrementally to limit the number of allocations and bytes to be moved in each pass, e.g. to call it in sync with render frames and not to experience too big hitches. See members: <a class="el" href="struct_vma_defragmentation_info.html#a637ada77b02179a27fa92290000afac4" title="Maximum numbers of bytes that can be copied during single pass, while moving allocations to different...">VmaDefragmentationInfo::maxBytesPerPass</a>, <a class="el" href="struct_vma_defragmentation_info.html#ac2db29d309bebc4f7d55041416e9694b" title="Maximum number of allocations that can be moved during single pass to a different place.">VmaDefragmentationInfo::maxAllocationsPerPass</a>.</p>
<p >It is also safe to perform the defragmentation asynchronously to render frames and other Vulkan and VMA usage, possibly from multiple threads, with the exception that allocations returned in <a class="el" href="struct_vma_defragmentation_pass_move_info.html#adfa7a4994afd9b940e7f1dfaf436a725" title="Array of moves to be performed by the user in the current defragmentation pass.">VmaDefragmentationPassMoveInfo::pMoves</a> shouldn't be destroyed until the defragmentation pass is ended.</p>
<p ><b>Mapping</b> is preserved on allocations that are moved during defragmentation. Whether through <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a11da372cc3a82931c5e5d6146cd9dd1f" title="Set this flag to use a memory that will be persistently mapped and retrieve pointer to it.">VMA_ALLOCATION_CREATE_MAPPED_BIT</a> or <a class="el" href="group__group__alloc.html#gad5bd1243512d099706de88168992f069" title="Maps memory represented by given allocation and returns pointer to it.">vmaMapMemory()</a>, the allocations are mapped at their new place. Of course, pointer to the mapped data changes, so it needs to be queried using <a class="el" href="struct_vma_allocation_info.html#a5eeffbe2d2f30f53370ff14aefbadbe2" title="Pointer to the beginning of this allocation as mapped data.">VmaAllocationInfo::pMappedData</a>.</p>
<dl class="section note"><dt>Note</dt><dd>Defragmentation is not supported in custom pools created with <a class="el" href="group__group__alloc.html#gga9a7c45f9c863695d98c83fa5ac940fe7a13c8a444197c67866be9cb05599fc726" title="Enables alternative, linear allocation algorithm in this pool.">VMA_POOL_CREATE_LINEAR_ALGORITHM_BIT</a>. </dd></dl>
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<dt>Member <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597aa6f24f821cd6a7c5e4a443f7bf59c520">VMA_ALLOCATION_CREATE_USER_DATA_COPY_STRING_BIT</a> </dt>
<dd><a class="anchor" id="_deprecated000006"></a>Preserved for backward compatibility. Consider using <a class="el" href="group__group__alloc.html#gabe02cbb0cd913b3f125958179f2020fc" title="Sets pName in given allocation to new value.">vmaSetAllocationName()</a> instead. </dd>
<dt>Member <a class="el" href="group__group__alloc.html#ggaa5846affa1e9da3800e3e78fae2305cca416a444d4d0fc20067c3f76f32ff2500">VMA_MEMORY_USAGE_CPU_COPY</a> </dt>
<dd><a class="anchor" id="_deprecated000005"></a>Obsolete, preserved for backward compatibility. Prefers not <code>VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT</code>. </dd>
<dt>Member <a class="el" href="group__group__alloc.html#ggaa5846affa1e9da3800e3e78fae2305cca40bdf4cddeffeb12f43d45ca1286e0a5">VMA_MEMORY_USAGE_CPU_ONLY</a> </dt>
<dd><a class="anchor" id="_deprecated000002"></a>Obsolete, preserved for backward compatibility. Guarantees <code>VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT</code> and <code>VK_MEMORY_PROPERTY_HOST_COHERENT_BIT</code>. </dd>
<dt>Member <a class="el" href="group__group__alloc.html#ggaa5846affa1e9da3800e3e78fae2305cca9066b52c5a7079bb74a69aaf8b92ff67">VMA_MEMORY_USAGE_CPU_TO_GPU</a> </dt>
<dd><a class="anchor" id="_deprecated000003"></a>Obsolete, preserved for backward compatibility. Guarantees <code>VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT</code>, prefers <code>VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT</code>. </dd>
<dt>Member <a class="el" href="group__group__alloc.html#ggaa5846affa1e9da3800e3e78fae2305ccac6b5dc1432d88647aa4cd456246eadf7">VMA_MEMORY_USAGE_GPU_ONLY</a> </dt>
<dd><a class="anchor" id="_deprecated000001"></a>Obsolete, preserved for backward compatibility. Prefers <code>VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT</code>. </dd>
<dt>Member <a class="el" href="group__group__alloc.html#ggaa5846affa1e9da3800e3e78fae2305cca7b586d2fdaf82a463b58f581ed72be27">VMA_MEMORY_USAGE_GPU_TO_CPU</a> </dt>
<dd><a class="anchor" id="_deprecated000004"></a>Obsolete, preserved for backward compatibility. Guarantees <code>VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT</code>, prefers <code>VK_MEMORY_PROPERTY_HOST_CACHED_BIT</code>. </dd>
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<div class="textblock"><p >Device extension VK_KHR_buffer_device_address allow to fetch raw GPU pointer to a buffer and pass it for usage in a shader code. It has been promoted to core Vulkan 1.2.</p>
<p >If you want to use this feature in connection with VMA, follow these steps:</p>
<h1><a class="anchor" id="enabling_buffer_device_address_initialization"></a>
Initialization</h1>
<p >1) (For Vulkan version &lt; 1.2) Call <code>vkEnumerateDeviceExtensionProperties</code> for the physical device. Check if the extension is supported - if returned array of <code>VkExtensionProperties</code> contains "VK_KHR_buffer_device_address".</p>
<p >2) Call <code>vkGetPhysicalDeviceFeatures2</code> for the physical device instead of old <code>vkGetPhysicalDeviceFeatures</code>. Attach additional structure <code>VkPhysicalDeviceBufferDeviceAddressFeatures*</code> to <code>VkPhysicalDeviceFeatures2::pNext</code> to be returned. Check if the device feature is really supported - check if <code>VkPhysicalDeviceBufferDeviceAddressFeatures::bufferDeviceAddress</code> is true.</p>
<p >3) (For Vulkan version &lt; 1.2) While creating device with <code>vkCreateDevice</code>, enable this extension - add "VK_KHR_buffer_device_address" to the list passed as <code>VkDeviceCreateInfo::ppEnabledExtensionNames</code>.</p>
<p >4) While creating the device, also don't set <code>VkDeviceCreateInfo::pEnabledFeatures</code>. Fill in <code>VkPhysicalDeviceFeatures2</code> structure instead and pass it as <code>VkDeviceCreateInfo::pNext</code>. Enable this device feature - attach additional structure <code>VkPhysicalDeviceBufferDeviceAddressFeatures*</code> to <code>VkPhysicalDeviceFeatures2::pNext</code> and set its member <code>bufferDeviceAddress</code> to <code>VK_TRUE</code>.</p>
<p >5) While creating <a class="el" href="struct_vma_allocator.html" title="Represents main object of this library initialized.">VmaAllocator</a> with <a class="el" href="group__group__init.html#ga200692051ddb34240248234f5f4c17bb" title="Creates VmaAllocator object.">vmaCreateAllocator()</a> inform VMA that you have enabled this feature - add <a class="el" href="group__group__init.html#gga4f87c9100d154a65a4ad495f7763cf7ca5f1b28b0414319d1687e1f2b30ab0089">VMA_ALLOCATOR_CREATE_BUFFER_DEVICE_ADDRESS_BIT</a> to <a class="el" href="struct_vma_allocator_create_info.html#a392ea2ecbaff93f91a7c49f735ad4346" title="Flags for created allocator. Use VmaAllocatorCreateFlagBits enum.">VmaAllocatorCreateInfo::flags</a>.</p>
<h1><a class="anchor" id="enabling_buffer_device_address_usage"></a>
Usage</h1>
<p >After following steps described above, you can create buffers with <code>VK_BUFFER_USAGE_SHADER_DEVICE_ADDRESS_BIT*</code> using VMA. The library automatically adds <code>VK_MEMORY_ALLOCATE_DEVICE_ADDRESS_BIT*</code> to allocated memory blocks wherever it might be needed.</p>
<p >Please note that the library supports only <code>VK_BUFFER_USAGE_SHADER_DEVICE_ADDRESS_BIT*</code>. The second part of this functionality related to "capture and replay" is not supported, as it is intended for usage in debugging tools like RenderDoc, not in everyday Vulkan usage.</p>
<h1><a class="anchor" id="enabling_buffer_device_address_more_information"></a>
More information</h1>
<p >To learn more about this extension, see <a href="https://www.khronos.org/registry/vulkan/specs/1.2-extensions/html/chap46.html#VK_KHR_buffer_device_address">VK_KHR_buffer_device_address in Vulkan specification</a></p>
<p >Example use of this extension can be found in the code of the sample and test suite accompanying this library. </p>
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<h3><a id="index_a" name="index_a"></a>- a -</h3><ul>
<li>alignment&#160;:&#160;<a class="el" href="struct_vma_virtual_allocation_create_info.html#a9d19709872fc1904a105079e1c885821">VmaVirtualAllocationCreateInfo</a></li>
<li>allocationBytes&#160;:&#160;<a class="el" href="struct_vma_statistics.html#a21db06eba3422f87a2b4b4703d879c16">VmaStatistics</a></li>
<li>allocationCount&#160;:&#160;<a class="el" href="struct_vma_statistics.html#ab0ff76e50f58f9f54b6f265e5bf5dde2">VmaStatistics</a></li>
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<li>allocationsMoved&#160;:&#160;<a class="el" href="struct_vma_defragmentation_stats.html#aefeabf130022008eadd75999478af3f9">VmaDefragmentationStats</a></li>
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<h3><a id="index_b" name="index_b"></a>- b -</h3><ul>
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<li>bytesFreed&#160;:&#160;<a class="el" href="struct_vma_defragmentation_stats.html#ab0cb9ac0dbc106c77e384ea676422f28">VmaDefragmentationStats</a></li>
<li>bytesMoved&#160;:&#160;<a class="el" href="struct_vma_defragmentation_stats.html#a36f9d5df2a10ba2a36b16e126d60572d">VmaDefragmentationStats</a></li>
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<h3><a id="index_d" name="index_d"></a>- d -</h3><ul>
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<li>deviceMemoryBlocksFreed&#160;:&#160;<a class="el" href="struct_vma_defragmentation_stats.html#a0113f1877904a5d1ee8f409216ff276b">VmaDefragmentationStats</a></li>
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<h3><a id="index_f" name="index_f"></a>- f -</h3><ul>
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<li>requiredFlags&#160;:&#160;<a class="el" href="struct_vma_allocation_create_info.html#a9166390303ff42d783305bc31c2b6b90">VmaAllocationCreateInfo</a></li>
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<h3><a id="index_s" name="index_s"></a>- s -</h3><ul>
<li>size&#160;:&#160;<a class="el" href="struct_vma_allocation_info.html#aac76d113a6a5ccbb09fea00fb25fd18f">VmaAllocationInfo</a>, <a class="el" href="struct_vma_virtual_allocation_create_info.html#aae08752b86817abd0d944c6025dc603e">VmaVirtualAllocationCreateInfo</a>, <a class="el" href="struct_vma_virtual_allocation_info.html#afb6d6bd0a6813869ea0842048d40aa2b">VmaVirtualAllocationInfo</a>, <a class="el" href="struct_vma_virtual_block_create_info.html#a670ab8c6a6e822f3c36781d79e8824e9">VmaVirtualBlockCreateInfo</a></li>
<li>srcAllocation&#160;:&#160;<a class="el" href="struct_vma_defragmentation_move.html#a25aa1bb64efc507a49c6cbc50689f862">VmaDefragmentationMove</a></li>
<li>statistics&#160;:&#160;<a class="el" href="struct_vma_budget.html#a6d15ab3a798fd62d9efa3a1e1f83bf54">VmaBudget</a>, <a class="el" href="struct_vma_detailed_statistics.html#a13efbdb35bd1291191d275f43e96d360">VmaDetailedStatistics</a></li>
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<h3><a id="index_t" name="index_t"></a>- t -</h3><ul>
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<h3><a id="index_u" name="index_u"></a>- u -</h3><ul>
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<h3><a id="index_v" name="index_v"></a>- v -</h3><ul>
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<li>vkBindBufferMemory2KHR&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#a0c4907235aab9df2767b79836afa2dc9">VmaVulkanFunctions</a></li>
<li>vkBindImageMemory&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#a1338d96a128a5ade648b8d934907c637">VmaVulkanFunctions</a></li>
<li>vkBindImageMemory2KHR&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#ab95aaa73ab8a3fe9fd3daaaec4e0b2bf">VmaVulkanFunctions</a></li>
<li>vkCmdCopyBuffer&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#ae5c0db8c89a3b82593dc16aa6a49fa3a">VmaVulkanFunctions</a></li>
<li>vkCreateBuffer&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#ae8084315a25006271a2edfc3a447519f">VmaVulkanFunctions</a></li>
<li>vkCreateImage&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#a23ebe70be515b9b5010a1d691200e325">VmaVulkanFunctions</a></li>
<li>vkDestroyBuffer&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#a7e054606faddb07f0e8556f3ed317d45">VmaVulkanFunctions</a></li>
<li>vkDestroyImage&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#a90b898227039b1dcb3520f6e91f09ffa">VmaVulkanFunctions</a></li>
<li>vkFlushMappedMemoryRanges&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#a33c322f4c4ad2810f8a9c97a277572f9">VmaVulkanFunctions</a></li>
<li>vkFreeMemory&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#a4c658701778564d62034255b5dda91b4">VmaVulkanFunctions</a></li>
<li>vkGetBufferMemoryRequirements&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#a5b92901df89a4194b0d12f6071d4d143">VmaVulkanFunctions</a></li>
<li>vkGetBufferMemoryRequirements2KHR&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#a9d8d1b05d2b1e7e1d9b27f6f585acf9c">VmaVulkanFunctions</a></li>
<li>vkGetDeviceBufferMemoryRequirements&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#a3d6cc5633bdbfec728213d6dfae7d413">VmaVulkanFunctions</a></li>
<li>vkGetDeviceImageMemoryRequirements&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#afd4780c565028cd15498528883f51fc6">VmaVulkanFunctions</a></li>
<li>vkGetDeviceProcAddr&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#ac383ab9af127e5e136622fa4ebea9e57">VmaVulkanFunctions</a></li>
<li>vkGetImageMemoryRequirements&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#a475f6f49f8debe4d10800592606d53f4">VmaVulkanFunctions</a></li>
<li>vkGetImageMemoryRequirements2KHR&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#a9cdcdc1e2b2ea7c571f7d27e30ba6875">VmaVulkanFunctions</a></li>
<li>vkGetInstanceProcAddr&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#a3eafa102f5f8915f093f40675636b849">VmaVulkanFunctions</a></li>
<li>vkGetPhysicalDeviceMemoryProperties&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#a60d25c33bba06bb8592e6875cbaa9830">VmaVulkanFunctions</a></li>
<li>vkGetPhysicalDeviceMemoryProperties2KHR&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#a0d992896e6ffcf92b9d7ea049fa5c445">VmaVulkanFunctions</a></li>
<li>vkGetPhysicalDeviceProperties&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#a77b7a74082823e865dd6546623468f96">VmaVulkanFunctions</a></li>
<li>vkInvalidateMappedMemoryRanges&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#a5c1093bc32386a8060c37c9f282078a1">VmaVulkanFunctions</a></li>
<li>vkMapMemory&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#ab5c1f38dea3a2cf00dc9eb4f57218c49">VmaVulkanFunctions</a></li>
<li>vkUnmapMemory&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#acc798589736f0becb317fc2196c1d8b9">VmaVulkanFunctions</a></li>
<li>vulkanApiVersion&#160;:&#160;<a class="el" href="struct_vma_allocator_create_info.html#ae0ffc55139b54520a6bb704b29ffc285">VmaAllocatorCreateInfo</a></li>
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&#160;
<h3><a id="index_a" name="index_a"></a>- a -</h3><ul>
<li>alignment&#160;:&#160;<a class="el" href="struct_vma_virtual_allocation_create_info.html#a9d19709872fc1904a105079e1c885821">VmaVirtualAllocationCreateInfo</a></li>
<li>allocationBytes&#160;:&#160;<a class="el" href="struct_vma_statistics.html#a21db06eba3422f87a2b4b4703d879c16">VmaStatistics</a></li>
<li>allocationCount&#160;:&#160;<a class="el" href="struct_vma_statistics.html#ab0ff76e50f58f9f54b6f265e5bf5dde2">VmaStatistics</a></li>
<li>allocationSizeMax&#160;:&#160;<a class="el" href="struct_vma_detailed_statistics.html#a06b2add24eed3449a66ff151979a0201">VmaDetailedStatistics</a></li>
<li>allocationSizeMin&#160;:&#160;<a class="el" href="struct_vma_detailed_statistics.html#a6fb397e7487e10f2a52e241577d2a2b8">VmaDetailedStatistics</a></li>
<li>allocationsMoved&#160;:&#160;<a class="el" href="struct_vma_defragmentation_stats.html#aefeabf130022008eadd75999478af3f9">VmaDefragmentationStats</a></li>
</ul>
<h3><a id="index_b" name="index_b"></a>- b -</h3><ul>
<li>blockBytes&#160;:&#160;<a class="el" href="struct_vma_statistics.html#a2afbc1c7aa8ad7bbb8de06215ba7e5c4">VmaStatistics</a></li>
<li>blockCount&#160;:&#160;<a class="el" href="struct_vma_statistics.html#a309179d5853a6a7cd534df497ee43957">VmaStatistics</a></li>
<li>blockSize&#160;:&#160;<a class="el" href="struct_vma_pool_create_info.html#aa4265160536cdb9be821b7686c16c676">VmaPoolCreateInfo</a></li>
<li>budget&#160;:&#160;<a class="el" href="struct_vma_budget.html#ab82e1d1754c2d210d0bdf90220bc6cdd">VmaBudget</a></li>
<li>bytesFreed&#160;:&#160;<a class="el" href="struct_vma_defragmentation_stats.html#ab0cb9ac0dbc106c77e384ea676422f28">VmaDefragmentationStats</a></li>
<li>bytesMoved&#160;:&#160;<a class="el" href="struct_vma_defragmentation_stats.html#a36f9d5df2a10ba2a36b16e126d60572d">VmaDefragmentationStats</a></li>
</ul>
<h3><a id="index_d" name="index_d"></a>- d -</h3><ul>
<li>device&#160;:&#160;<a class="el" href="struct_vma_allocator_create_info.html#ad924ddd77b04039c88d0c09b0ffcd500">VmaAllocatorCreateInfo</a>, <a class="el" href="struct_vma_allocator_info.html#a012b4c485bf3b0ea8921352c5ee0c357">VmaAllocatorInfo</a></li>
<li>deviceMemory&#160;:&#160;<a class="el" href="struct_vma_allocation_info.html#ae0bfb7dfdf79a76ffefc9a94677a2f67">VmaAllocationInfo</a></li>
<li>deviceMemoryBlocksFreed&#160;:&#160;<a class="el" href="struct_vma_defragmentation_stats.html#a0113f1877904a5d1ee8f409216ff276b">VmaDefragmentationStats</a></li>
<li>dstTmpAllocation&#160;:&#160;<a class="el" href="struct_vma_defragmentation_move.html#ab65b106adf209acd7313296d1075300e">VmaDefragmentationMove</a></li>
</ul>
<h3><a id="index_f" name="index_f"></a>- f -</h3><ul>
<li>flags&#160;:&#160;<a class="el" href="struct_vma_allocation_create_info.html#add09658ac14fe290ace25470ddd6d41b">VmaAllocationCreateInfo</a>, <a class="el" href="struct_vma_allocator_create_info.html#a392ea2ecbaff93f91a7c49f735ad4346">VmaAllocatorCreateInfo</a>, <a class="el" href="struct_vma_defragmentation_info.html#a3e23080c978ecf3abb3180f5b2069da7">VmaDefragmentationInfo</a>, <a class="el" href="struct_vma_pool_create_info.html#a8405139f63d078340ae74513a59f5446">VmaPoolCreateInfo</a>, <a class="el" href="struct_vma_virtual_allocation_create_info.html#ab10e16956cc4bf20ced9de77d1129ea4">VmaVirtualAllocationCreateInfo</a>, <a class="el" href="struct_vma_virtual_block_create_info.html#aaab9bf7e2d228c02ab6d90a72a6e6912">VmaVirtualBlockCreateInfo</a></li>
</ul>
<h3><a id="index_i" name="index_i"></a>- i -</h3><ul>
<li>instance&#160;:&#160;<a class="el" href="struct_vma_allocator_create_info.html#a70dd42e29b1df1d1b9b61532ae0b370b">VmaAllocatorCreateInfo</a>, <a class="el" href="struct_vma_allocator_info.html#a2ed6a4d2d3fea039d66a13f15d0ce5fe">VmaAllocatorInfo</a></li>
</ul>
<h3><a id="index_m" name="index_m"></a>- m -</h3><ul>
<li>maxAllocationsPerPass&#160;:&#160;<a class="el" href="struct_vma_defragmentation_info.html#ac2db29d309bebc4f7d55041416e9694b">VmaDefragmentationInfo</a></li>
<li>maxBlockCount&#160;:&#160;<a class="el" href="struct_vma_pool_create_info.html#ae41142f2834fcdc82baa4883c187b75c">VmaPoolCreateInfo</a></li>
<li>maxBytesPerPass&#160;:&#160;<a class="el" href="struct_vma_defragmentation_info.html#a637ada77b02179a27fa92290000afac4">VmaDefragmentationInfo</a></li>
<li>memoryHeap&#160;:&#160;<a class="el" href="struct_vma_total_statistics.html#a39beeba5b3a2e7cfe5f5e2331a2705ce">VmaTotalStatistics</a></li>
<li>memoryType&#160;:&#160;<a class="el" href="struct_vma_allocation_info.html#a7f6b0aa58c135e488e6b40a388dad9d5">VmaAllocationInfo</a>, <a class="el" href="struct_vma_total_statistics.html#acb70e5b7fe543813ed8ba9282640969d">VmaTotalStatistics</a></li>
<li>memoryTypeBits&#160;:&#160;<a class="el" href="struct_vma_allocation_create_info.html#a3bf940c0271d85d6ba32a4d820075055">VmaAllocationCreateInfo</a></li>
<li>memoryTypeIndex&#160;:&#160;<a class="el" href="struct_vma_pool_create_info.html#a596fa76b685d3f1f688f84a709a5b319">VmaPoolCreateInfo</a></li>
<li>minAllocationAlignment&#160;:&#160;<a class="el" href="struct_vma_pool_create_info.html#ade3eca546f0c6ab4e8fbf20eb6d854cb">VmaPoolCreateInfo</a></li>
<li>minBlockCount&#160;:&#160;<a class="el" href="struct_vma_pool_create_info.html#ad8006fb803185c0a699d30f3e9a865ae">VmaPoolCreateInfo</a></li>
<li>moveCount&#160;:&#160;<a class="el" href="struct_vma_defragmentation_pass_move_info.html#a1b3e18c23f9691f35baf183e615c4408">VmaDefragmentationPassMoveInfo</a></li>
</ul>
<h3><a id="index_o" name="index_o"></a>- o -</h3><ul>
<li>offset&#160;:&#160;<a class="el" href="struct_vma_allocation_info.html#a4a3c732388dbdc7a23f9365b00825268">VmaAllocationInfo</a>, <a class="el" href="struct_vma_virtual_allocation_info.html#accb40a8205f49ccca3de975da7d1a2b5">VmaVirtualAllocationInfo</a></li>
<li>operation&#160;:&#160;<a class="el" href="struct_vma_defragmentation_move.html#a20996a4686c9246dff77b375ac4a91e2">VmaDefragmentationMove</a></li>
</ul>
<h3><a id="index_p" name="index_p"></a>- p -</h3><ul>
<li>pAllocationCallbacks&#160;:&#160;<a class="el" href="struct_vma_allocator_create_info.html#a6e409087e3be55400d0e4ccbe43c608d">VmaAllocatorCreateInfo</a>, <a class="el" href="struct_vma_virtual_block_create_info.html#a290283bf915c257d24584872d793ad30">VmaVirtualBlockCreateInfo</a></li>
<li>pDeviceMemoryCallbacks&#160;:&#160;<a class="el" href="struct_vma_allocator_create_info.html#af1380969b5e1ea4c3184a877892d260e">VmaAllocatorCreateInfo</a></li>
<li>pfnAllocate&#160;:&#160;<a class="el" href="struct_vma_device_memory_callbacks.html#a4f17f7b255101e733b44d5633aceabfb">VmaDeviceMemoryCallbacks</a></li>
<li>pfnFree&#160;:&#160;<a class="el" href="struct_vma_device_memory_callbacks.html#abe8a3328bbc916f6f712fdb6b299444c">VmaDeviceMemoryCallbacks</a></li>
<li>pHeapSizeLimit&#160;:&#160;<a class="el" href="struct_vma_allocator_create_info.html#a31c192aa6cbffa33279f6d9f0c47c44b">VmaAllocatorCreateInfo</a></li>
<li>physicalDevice&#160;:&#160;<a class="el" href="struct_vma_allocator_create_info.html#a08230f04ae6ccf8a78150a9e829a7156">VmaAllocatorCreateInfo</a>, <a class="el" href="struct_vma_allocator_info.html#aba2b703f96e51d567717e1fb2935b47a">VmaAllocatorInfo</a></li>
<li>pMappedData&#160;:&#160;<a class="el" href="struct_vma_allocation_info.html#a5eeffbe2d2f30f53370ff14aefbadbe2">VmaAllocationInfo</a></li>
<li>pMemoryAllocateNext&#160;:&#160;<a class="el" href="struct_vma_pool_create_info.html#af0f8c58f51a2a7a0a389dc79565044d7">VmaPoolCreateInfo</a></li>
<li>pMoves&#160;:&#160;<a class="el" href="struct_vma_defragmentation_pass_move_info.html#adfa7a4994afd9b940e7f1dfaf436a725">VmaDefragmentationPassMoveInfo</a></li>
<li>pName&#160;:&#160;<a class="el" href="struct_vma_allocation_info.html#a28612f3e897e5b268254a3c63413d759">VmaAllocationInfo</a></li>
<li>pool&#160;:&#160;<a class="el" href="struct_vma_allocation_create_info.html#a6272c0555cfd1fe28bff1afeb6190150">VmaAllocationCreateInfo</a>, <a class="el" href="struct_vma_defragmentation_info.html#a18dd2097d8ab2976cdc7dd3e7b978bd4">VmaDefragmentationInfo</a></li>
<li>preferredFlags&#160;:&#160;<a class="el" href="struct_vma_allocation_create_info.html#a7fe8d81a1ad10b2a2faacacee5b15d6d">VmaAllocationCreateInfo</a></li>
<li>preferredLargeHeapBlockSize&#160;:&#160;<a class="el" href="struct_vma_allocator_create_info.html#a8e4714298e3121cdd8b214a1ae7a637a">VmaAllocatorCreateInfo</a></li>
<li>priority&#160;:&#160;<a class="el" href="struct_vma_allocation_create_info.html#a983d39e1a2e63649d78a960aa2fdd0f7">VmaAllocationCreateInfo</a>, <a class="el" href="struct_vma_pool_create_info.html#a16e686c688f6725f119ebf6e24ab5274">VmaPoolCreateInfo</a></li>
<li>pTypeExternalMemoryHandleTypes&#160;:&#160;<a class="el" href="struct_vma_allocator_create_info.html#ae8f0db05e5cb4c43d7713bf4a49a736b">VmaAllocatorCreateInfo</a></li>
<li>pUserData&#160;:&#160;<a class="el" href="struct_vma_allocation_create_info.html#a8259e85c272683434f4abb4ddddffe19">VmaAllocationCreateInfo</a>, <a class="el" href="struct_vma_allocation_info.html#adc507656149c04de7ed95d0042ba2a13">VmaAllocationInfo</a>, <a class="el" href="struct_vma_device_memory_callbacks.html#a24052de0937ddd54015a2df0363903c6">VmaDeviceMemoryCallbacks</a>, <a class="el" href="struct_vma_virtual_allocation_create_info.html#a015f8544ca51a7350f7434d42d0587bb">VmaVirtualAllocationCreateInfo</a>, <a class="el" href="struct_vma_virtual_allocation_info.html#a41d5cb09357656411653d82fee436f45">VmaVirtualAllocationInfo</a></li>
<li>pVulkanFunctions&#160;:&#160;<a class="el" href="struct_vma_allocator_create_info.html#a3dc197be3227da7338b1643f70db36bd">VmaAllocatorCreateInfo</a></li>
</ul>
<h3><a id="index_r" name="index_r"></a>- r -</h3><ul>
<li>requiredFlags&#160;:&#160;<a class="el" href="struct_vma_allocation_create_info.html#a9166390303ff42d783305bc31c2b6b90">VmaAllocationCreateInfo</a></li>
</ul>
<h3><a id="index_s" name="index_s"></a>- s -</h3><ul>
<li>size&#160;:&#160;<a class="el" href="struct_vma_allocation_info.html#aac76d113a6a5ccbb09fea00fb25fd18f">VmaAllocationInfo</a>, <a class="el" href="struct_vma_virtual_allocation_create_info.html#aae08752b86817abd0d944c6025dc603e">VmaVirtualAllocationCreateInfo</a>, <a class="el" href="struct_vma_virtual_allocation_info.html#afb6d6bd0a6813869ea0842048d40aa2b">VmaVirtualAllocationInfo</a>, <a class="el" href="struct_vma_virtual_block_create_info.html#a670ab8c6a6e822f3c36781d79e8824e9">VmaVirtualBlockCreateInfo</a></li>
<li>srcAllocation&#160;:&#160;<a class="el" href="struct_vma_defragmentation_move.html#a25aa1bb64efc507a49c6cbc50689f862">VmaDefragmentationMove</a></li>
<li>statistics&#160;:&#160;<a class="el" href="struct_vma_budget.html#a6d15ab3a798fd62d9efa3a1e1f83bf54">VmaBudget</a>, <a class="el" href="struct_vma_detailed_statistics.html#a13efbdb35bd1291191d275f43e96d360">VmaDetailedStatistics</a></li>
</ul>
<h3><a id="index_t" name="index_t"></a>- t -</h3><ul>
<li>total&#160;:&#160;<a class="el" href="struct_vma_total_statistics.html#a76f1935f7101883f5bb2a03b6c5649d2">VmaTotalStatistics</a></li>
</ul>
<h3><a id="index_u" name="index_u"></a>- u -</h3><ul>
<li>unusedRangeCount&#160;:&#160;<a class="el" href="struct_vma_detailed_statistics.html#ab721bf04892e8b67802d4ddb7734638a">VmaDetailedStatistics</a></li>
<li>unusedRangeSizeMax&#160;:&#160;<a class="el" href="struct_vma_detailed_statistics.html#af98943b5da98cf441ffa04b67914c78c">VmaDetailedStatistics</a></li>
<li>unusedRangeSizeMin&#160;:&#160;<a class="el" href="struct_vma_detailed_statistics.html#a830eda847ed735d0e91da25cfcf797a4">VmaDetailedStatistics</a></li>
<li>usage&#160;:&#160;<a class="el" href="struct_vma_allocation_create_info.html#accb8b06b1f677d858cb9af20705fa910">VmaAllocationCreateInfo</a>, <a class="el" href="struct_vma_budget.html#a84dd1ecca8b0110259eb206dbadb11f6">VmaBudget</a></li>
</ul>
<h3><a id="index_v" name="index_v"></a>- v -</h3><ul>
<li>vkAllocateMemory&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#a2943bf99dfd784a0e8f599d987e22e6c">VmaVulkanFunctions</a></li>
<li>vkBindBufferMemory&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#a94fc4f3a605d9880bb3c0ba2c2fc80b2">VmaVulkanFunctions</a></li>
<li>vkBindBufferMemory2KHR&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#a0c4907235aab9df2767b79836afa2dc9">VmaVulkanFunctions</a></li>
<li>vkBindImageMemory&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#a1338d96a128a5ade648b8d934907c637">VmaVulkanFunctions</a></li>
<li>vkBindImageMemory2KHR&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#ab95aaa73ab8a3fe9fd3daaaec4e0b2bf">VmaVulkanFunctions</a></li>
<li>vkCmdCopyBuffer&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#ae5c0db8c89a3b82593dc16aa6a49fa3a">VmaVulkanFunctions</a></li>
<li>vkCreateBuffer&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#ae8084315a25006271a2edfc3a447519f">VmaVulkanFunctions</a></li>
<li>vkCreateImage&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#a23ebe70be515b9b5010a1d691200e325">VmaVulkanFunctions</a></li>
<li>vkDestroyBuffer&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#a7e054606faddb07f0e8556f3ed317d45">VmaVulkanFunctions</a></li>
<li>vkDestroyImage&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#a90b898227039b1dcb3520f6e91f09ffa">VmaVulkanFunctions</a></li>
<li>vkFlushMappedMemoryRanges&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#a33c322f4c4ad2810f8a9c97a277572f9">VmaVulkanFunctions</a></li>
<li>vkFreeMemory&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#a4c658701778564d62034255b5dda91b4">VmaVulkanFunctions</a></li>
<li>vkGetBufferMemoryRequirements&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#a5b92901df89a4194b0d12f6071d4d143">VmaVulkanFunctions</a></li>
<li>vkGetBufferMemoryRequirements2KHR&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#a9d8d1b05d2b1e7e1d9b27f6f585acf9c">VmaVulkanFunctions</a></li>
<li>vkGetDeviceBufferMemoryRequirements&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#a3d6cc5633bdbfec728213d6dfae7d413">VmaVulkanFunctions</a></li>
<li>vkGetDeviceImageMemoryRequirements&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#afd4780c565028cd15498528883f51fc6">VmaVulkanFunctions</a></li>
<li>vkGetDeviceProcAddr&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#ac383ab9af127e5e136622fa4ebea9e57">VmaVulkanFunctions</a></li>
<li>vkGetImageMemoryRequirements&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#a475f6f49f8debe4d10800592606d53f4">VmaVulkanFunctions</a></li>
<li>vkGetImageMemoryRequirements2KHR&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#a9cdcdc1e2b2ea7c571f7d27e30ba6875">VmaVulkanFunctions</a></li>
<li>vkGetInstanceProcAddr&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#a3eafa102f5f8915f093f40675636b849">VmaVulkanFunctions</a></li>
<li>vkGetPhysicalDeviceMemoryProperties&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#a60d25c33bba06bb8592e6875cbaa9830">VmaVulkanFunctions</a></li>
<li>vkGetPhysicalDeviceMemoryProperties2KHR&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#a0d992896e6ffcf92b9d7ea049fa5c445">VmaVulkanFunctions</a></li>
<li>vkGetPhysicalDeviceProperties&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#a77b7a74082823e865dd6546623468f96">VmaVulkanFunctions</a></li>
<li>vkInvalidateMappedMemoryRanges&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#a5c1093bc32386a8060c37c9f282078a1">VmaVulkanFunctions</a></li>
<li>vkMapMemory&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#ab5c1f38dea3a2cf00dc9eb4f57218c49">VmaVulkanFunctions</a></li>
<li>vkUnmapMemory&#160;:&#160;<a class="el" href="struct_vma_vulkan_functions.html#acc798589736f0becb317fc2196c1d8b9">VmaVulkanFunctions</a></li>
<li>vulkanApiVersion&#160;:&#160;<a class="el" href="struct_vma_allocator_create_info.html#ae0ffc55139b54520a6bb704b29ffc285">VmaAllocatorCreateInfo</a></li>
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<div class="headertitle"><div class="title">General considerations </div></div>
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<div class="textblock"><h1><a class="anchor" id="general_considerations_thread_safety"></a>
Thread safety</h1>
<ul>
<li>The library has no global state, so separate <a class="el" href="struct_vma_allocator.html" title="Represents main object of this library initialized.">VmaAllocator</a> objects can be used independently. There should be no need to create multiple such objects though - one per <code>VkDevice</code> is enough.</li>
<li>By default, all calls to functions that take <a class="el" href="struct_vma_allocator.html" title="Represents main object of this library initialized.">VmaAllocator</a> as first parameter are safe to call from multiple threads simultaneously because they are synchronized internally when needed. This includes allocation and deallocation from default memory pool, as well as custom <a class="el" href="struct_vma_pool.html" title="Represents custom memory pool.">VmaPool</a>.</li>
<li>When the allocator is created with <a class="el" href="group__group__init.html#gga4f87c9100d154a65a4ad495f7763cf7ca4816ddaed324ba110172ca608a20f29d" title="Allocator and all objects created from it will not be synchronized internally, so you must guarantee ...">VMA_ALLOCATOR_CREATE_EXTERNALLY_SYNCHRONIZED_BIT</a> flag, calls to functions that take such <a class="el" href="struct_vma_allocator.html" title="Represents main object of this library initialized.">VmaAllocator</a> object must be synchronized externally.</li>
<li>Access to a <a class="el" href="struct_vma_allocation.html" title="Represents single memory allocation.">VmaAllocation</a> object must be externally synchronized. For example, you must not call <a class="el" href="group__group__alloc.html#ga86dd08aba8633bfa4ad0df2e76481d8b" title="Returns current information about specified allocation.">vmaGetAllocationInfo()</a> and <a class="el" href="group__group__alloc.html#gad5bd1243512d099706de88168992f069" title="Maps memory represented by given allocation and returns pointer to it.">vmaMapMemory()</a> from different threads at the same time if you pass the same <a class="el" href="struct_vma_allocation.html" title="Represents single memory allocation.">VmaAllocation</a> object to these functions.</li>
<li><a class="el" href="struct_vma_virtual_block.html" title="Handle to a virtual block object that allows to use core allocation algorithm without allocating any ...">VmaVirtualBlock</a> is not safe to be used from multiple threads simultaneously.</li>
</ul>
<h1><a class="anchor" id="general_considerations_versioning_and_compatibility"></a>
Versioning and compatibility</h1>
<p >The library uses <a href="https://semver.org/"><b>Semantic Versioning</b></a>, which means version numbers follow convention: Major.Minor.Patch (e.g. 2.3.0), where:</p>
<ul>
<li>Incremented Patch version means a release is backward- and forward-compatible, introducing only some internal improvements, bug fixes, optimizations etc. or changes that are out of scope of the official API described in this documentation.</li>
<li>Incremented Minor version means a release is backward-compatible, so existing code that uses the library should continue to work, while some new symbols could have been added: new structures, functions, new values in existing enums and bit flags, new structure members, but not new function parameters.</li>
<li>Incrementing Major version means a release could break some backward compatibility.</li>
</ul>
<p >All changes between official releases are documented in file "CHANGELOG.md".</p>
<dl class="section warning"><dt>Warning</dt><dd>Backward compatiblity is considered on the level of C++ source code, not binary linkage. Adding new members to existing structures is treated as backward compatible if initializing the new members to binary zero results in the old behavior. You should always fully initialize all library structures to zeros and not rely on their exact binary size.</dd></dl>
<h1><a class="anchor" id="general_considerations_validation_layer_warnings"></a>
Validation layer warnings</h1>
<p >When using this library, you can meet following types of warnings issued by Vulkan validation layer. They don't necessarily indicate a bug, so you may need to just ignore them.</p>
<ul>
<li><em>vkBindBufferMemory(): Binding memory to buffer 0xeb8e4 but vkGetBufferMemoryRequirements() has not been called on that buffer.</em><ul>
<li>It happens when VK_KHR_dedicated_allocation extension is enabled. <code>vkGetBufferMemoryRequirements2KHR</code> function is used instead, while validation layer seems to be unaware of it.</li>
</ul>
</li>
<li><em>Mapping an image with layout VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL can result in undefined behavior if this memory is used by the device. Only GENERAL or PREINITIALIZED should be used.</em><ul>
<li>It happens when you map a buffer or image, because the library maps entire <code>VkDeviceMemory</code> block, where different types of images and buffers may end up together, especially on GPUs with unified memory like Intel.</li>
</ul>
</li>
<li><em>Non-linear image 0xebc91 is aliased with linear buffer 0xeb8e4 which may indicate a bug.</em><ul>
<li>It may happen when you use <a class="el" href="defragmentation.html">defragmentation</a>.</li>
</ul>
</li>
</ul>
<h1><a class="anchor" id="general_considerations_allocation_algorithm"></a>
Allocation algorithm</h1>
<p >The library uses following algorithm for allocation, in order:</p>
<ol type="1">
<li>Try to find free range of memory in existing blocks.</li>
<li>If failed, try to create a new block of <code>VkDeviceMemory</code>, with preferred block size.</li>
<li>If failed, try to create such block with size / 2, size / 4, size / 8.</li>
<li>If failed, try to allocate separate <code>VkDeviceMemory</code> for this allocation, just like when you use <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a3fc311d855c2ff53f1090ef5c722b38f" title="Set this flag if the allocation should have its own memory block.">VMA_ALLOCATION_CREATE_DEDICATED_MEMORY_BIT</a>.</li>
<li>If failed, choose other memory type that meets the requirements specified in <a class="el" href="struct_vma_allocation_create_info.html" title="Parameters of new VmaAllocation.">VmaAllocationCreateInfo</a> and go to point 1.</li>
<li>If failed, return <code>VK_ERROR_OUT_OF_DEVICE_MEMORY</code>.</li>
</ol>
<h1><a class="anchor" id="general_considerations_features_not_supported"></a>
Features not supported</h1>
<p >Features deliberately excluded from the scope of this library:</p>
<ol type="1">
<li><b>Data transfer.</b> Uploading (streaming) and downloading data of buffers and images between CPU and GPU memory and related synchronization is responsibility of the user. Defining some "texture" object that would automatically stream its data from a staging copy in CPU memory to GPU memory would rather be a feature of another, higher-level library implemented on top of VMA. VMA doesn't record any commands to a <code>VkCommandBuffer</code>. It just allocates memory.</li>
<li><b>Recreation of buffers and images.</b> Although the library has functions for buffer and image creation: <a class="el" href="group__group__alloc.html#gac72ee55598617e8eecca384e746bab51" title="Creates a new VkBuffer, allocates and binds memory for it.">vmaCreateBuffer()</a>, <a class="el" href="group__group__alloc.html#ga02a94f25679275851a53e82eacbcfc73" title="Function similar to vmaCreateBuffer().">vmaCreateImage()</a>, you need to recreate these objects yourself after defragmentation. That is because the big structures <code>VkBufferCreateInfo</code>, <code>VkImageCreateInfo</code> are not stored in <a class="el" href="struct_vma_allocation.html" title="Represents single memory allocation.">VmaAllocation</a> object.</li>
<li><b>Handling CPU memory allocation failures.</b> When dynamically creating small C++ objects in CPU memory (not Vulkan memory), allocation failures are not checked and handled gracefully, because that would complicate code significantly and is usually not needed in desktop PC applications anyway. Success of an allocation is just checked with an assert.</li>
<li><b>Code free of any compiler warnings.</b> Maintaining the library to compile and work correctly on so many different platforms is hard enough. Being free of any warnings, on any version of any compiler, is simply not feasible. There are many preprocessor macros that make some variables unused, function parameters unreferenced, or conditional expressions constant in some configurations. The code of this library should not be bigger or more complicated just to silence these warnings. It is recommended to disable such warnings instead.</li>
<li>This is a C++ library with C interface. <b>Bindings or ports to any other programming languages</b> are welcome as external projects but are not going to be included into this repository. </li>
</ol>
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&#160;
<h3><a id="index_v" name="index_v"></a>- v -</h3><ul>
<li>VK_DEFINE_NON_DISPATCHABLE_HANDLE()&#160;:&#160;<a class="el" href="group__group__virtual.html#ga565936f8d98d225b536a2d9703bc7676">vk_mem_alloc.h</a></li>
<li>vmaAllocateMemory()&#160;:&#160;<a class="el" href="group__group__alloc.html#gabf28077dbf82d0908b8acbe8ee8dd9b8">vk_mem_alloc.h</a></li>
<li>vmaAllocateMemoryForBuffer()&#160;:&#160;<a class="el" href="group__group__alloc.html#ga7fdf64415b6c3d83c454f28d2c53df7b">vk_mem_alloc.h</a></li>
<li>vmaAllocateMemoryForImage()&#160;:&#160;<a class="el" href="group__group__alloc.html#ga0faa3f9e5fb233d29d1e00390650febb">vk_mem_alloc.h</a></li>
<li>vmaAllocateMemoryPages()&#160;:&#160;<a class="el" href="group__group__alloc.html#gad37e82e492b3de38fc3f4cffd9ad0ae1">vk_mem_alloc.h</a></li>
<li>vmaBeginDefragmentation()&#160;:&#160;<a class="el" href="group__group__alloc.html#gac3335566858b45541fa9c0d7a6bbb57e">vk_mem_alloc.h</a></li>
<li>vmaBeginDefragmentationPass()&#160;:&#160;<a class="el" href="group__group__alloc.html#ga980d7da2ce3b1fd5c8b8476bc362cc00">vk_mem_alloc.h</a></li>
<li>vmaBindBufferMemory()&#160;:&#160;<a class="el" href="group__group__alloc.html#ga6b0929b914b60cf2d45cac4bf3547470">vk_mem_alloc.h</a></li>
<li>vmaBindBufferMemory2()&#160;:&#160;<a class="el" href="group__group__alloc.html#ga927c944f45e0f2941182abb6f608e64a">vk_mem_alloc.h</a></li>
<li>vmaBindImageMemory()&#160;:&#160;<a class="el" href="group__group__alloc.html#ga3d3ca45799923aa5d138e9e5f9eb2da5">vk_mem_alloc.h</a></li>
<li>vmaBindImageMemory2()&#160;:&#160;<a class="el" href="group__group__alloc.html#gaa8251ee81b0045a443e35b8e8aa021bc">vk_mem_alloc.h</a></li>
<li>vmaBuildStatsString()&#160;:&#160;<a class="el" href="group__group__stats.html#gaa4fee7eb5253377599ef4fd38c93c2a0">vk_mem_alloc.h</a></li>
<li>vmaBuildVirtualBlockStatsString()&#160;:&#160;<a class="el" href="group__group__stats.html#ga52d810e1222c592e5d80556ad005f1e6">vk_mem_alloc.h</a></li>
<li>vmaCalculatePoolStatistics()&#160;:&#160;<a class="el" href="group__group__stats.html#ga50ba0eb25d2b363b792be4645ca7a380">vk_mem_alloc.h</a></li>
<li>vmaCalculateStatistics()&#160;:&#160;<a class="el" href="group__group__stats.html#ga36f3484de7aa6cd6edc4de9edfa0ff59">vk_mem_alloc.h</a></li>
<li>vmaCalculateVirtualBlockStatistics()&#160;:&#160;<a class="el" href="group__group__virtual.html#ga93c5741bca44b43e5b849cacbd616098">vk_mem_alloc.h</a></li>
<li>vmaCheckCorruption()&#160;:&#160;<a class="el" href="group__group__alloc.html#ga49329a7f030dafcf82f7b73334c22e98">vk_mem_alloc.h</a></li>
<li>vmaCheckPoolCorruption()&#160;:&#160;<a class="el" href="group__group__alloc.html#gad535935619c7a549bf837e1bb0068f89">vk_mem_alloc.h</a></li>
<li>vmaClearVirtualBlock()&#160;:&#160;<a class="el" href="group__group__virtual.html#ga5eda6f55919fb05bd2f56a112590c571">vk_mem_alloc.h</a></li>
<li>vmaCreateAliasingBuffer()&#160;:&#160;<a class="el" href="group__group__alloc.html#ga60d5d4803e3c82505a2bfddb929adb03">vk_mem_alloc.h</a></li>
<li>vmaCreateAliasingImage()&#160;:&#160;<a class="el" href="group__group__alloc.html#gaebc4db1f94b53dba2338b4c0fd80d0dc">vk_mem_alloc.h</a></li>
<li>vmaCreateAllocator()&#160;:&#160;<a class="el" href="group__group__init.html#ga200692051ddb34240248234f5f4c17bb">vk_mem_alloc.h</a></li>
<li>vmaCreateBuffer()&#160;:&#160;<a class="el" href="group__group__alloc.html#gac72ee55598617e8eecca384e746bab51">vk_mem_alloc.h</a></li>
<li>vmaCreateBufferWithAlignment()&#160;:&#160;<a class="el" href="group__group__alloc.html#gaa06a690013a0d01e60894ac378083834">vk_mem_alloc.h</a></li>
<li>vmaCreateImage()&#160;:&#160;<a class="el" href="group__group__alloc.html#ga02a94f25679275851a53e82eacbcfc73">vk_mem_alloc.h</a></li>
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&#160;
<h3><a id="index_p" name="index_p"></a>- p -</h3><ul>
<li>PFN_vmaAllocateDeviceMemoryFunction&#160;:&#160;<a class="el" href="group__group__init.html#ga7e1ed85f7799600b03ad51a77acc21f3">vk_mem_alloc.h</a></li>
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<h3><a id="index_v" name="index_v"></a>- v -</h3><ul>
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<p>API elements related to the initialization and management of the entire library, especially <a class="el" href="struct_vma_allocator.html" title="Represents main object of this library initialized.">VmaAllocator</a> object.
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_vma_device_memory_callbacks.html">VmaDeviceMemoryCallbacks</a></td></tr>
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<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_vma_vulkan_functions.html">VmaVulkanFunctions</a></td></tr>
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<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_vma_allocator_create_info.html">VmaAllocatorCreateInfo</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Description of a Allocator to be created. <a href="struct_vma_allocator_create_info.html#details">More...</a><br /></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_vma_allocator_info.html">VmaAllocatorInfo</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Information about existing <a class="el" href="struct_vma_allocator.html" title="Represents main object of this library initialized.">VmaAllocator</a> object. <a href="struct_vma_allocator_info.html#details">More...</a><br /></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_vma_allocator.html">VmaAllocator</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Represents main object of this library initialized. <a href="struct_vma_allocator.html#details">More...</a><br /></td></tr>
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Typedefs</h2></td></tr>
<tr class="memitem:gafd73b95e737ee7e76f827cb5472f559f"><td class="memItemLeft" align="right" valign="top">typedef enum <a class="el" href="group__group__init.html#ga4f87c9100d154a65a4ad495f7763cf7c">VmaAllocatorCreateFlagBits</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__init.html#gafd73b95e737ee7e76f827cb5472f559f">VmaAllocatorCreateFlagBits</a></td></tr>
<tr class="memdesc:gafd73b95e737ee7e76f827cb5472f559f"><td class="mdescLeft">&#160;</td><td class="mdescRight">Flags for created <a class="el" href="struct_vma_allocator.html" title="Represents main object of this library initialized.">VmaAllocator</a>. <a href="group__group__init.html#gafd73b95e737ee7e76f827cb5472f559f">More...</a><br /></td></tr>
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<tr class="memitem:gacfe6863e160722c2c1bbcf7573fddc4d"><td class="memItemLeft" align="right" valign="top">typedef VkFlags&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__init.html#gacfe6863e160722c2c1bbcf7573fddc4d">VmaAllocatorCreateFlags</a></td></tr>
<tr class="memdesc:gacfe6863e160722c2c1bbcf7573fddc4d"><td class="mdescLeft">&#160;</td><td class="mdescRight">See <a class="el" href="group__group__init.html#ga4f87c9100d154a65a4ad495f7763cf7c" title="Flags for created VmaAllocator.">VmaAllocatorCreateFlagBits</a>. <a href="group__group__init.html#gacfe6863e160722c2c1bbcf7573fddc4d">More...</a><br /></td></tr>
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<tr class="memitem:ga7e1ed85f7799600b03ad51a77acc21f3"><td class="memItemLeft" align="right" valign="top">typedef void(VKAPI_PTR *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__init.html#ga7e1ed85f7799600b03ad51a77acc21f3">PFN_vmaAllocateDeviceMemoryFunction</a>) (<a class="el" href="struct_vma_allocator.html">VmaAllocator</a> allocator, uint32_t memoryType, VkDeviceMemory memory, VkDeviceSize size, void *pUserData)</td></tr>
<tr class="memdesc:ga7e1ed85f7799600b03ad51a77acc21f3"><td class="mdescLeft">&#160;</td><td class="mdescRight">Callback function called after successful vkAllocateMemory. <a href="group__group__init.html#ga7e1ed85f7799600b03ad51a77acc21f3">More...</a><br /></td></tr>
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<tr class="memitem:ga154ccaaf53dc2c36378f80f0c4f3679b"><td class="memItemLeft" align="right" valign="top">typedef void(VKAPI_PTR *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__init.html#ga154ccaaf53dc2c36378f80f0c4f3679b">PFN_vmaFreeDeviceMemoryFunction</a>) (<a class="el" href="struct_vma_allocator.html">VmaAllocator</a> allocator, uint32_t memoryType, VkDeviceMemory memory, VkDeviceSize size, void *pUserData)</td></tr>
<tr class="memdesc:ga154ccaaf53dc2c36378f80f0c4f3679b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Callback function called before vkFreeMemory. <a href="group__group__init.html#ga154ccaaf53dc2c36378f80f0c4f3679b">More...</a><br /></td></tr>
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<tr class="memitem:ga77692d3c8770ea8882d573206bd27b2b"><td class="memItemLeft" align="right" valign="top">typedef struct <a class="el" href="struct_vma_device_memory_callbacks.html">VmaDeviceMemoryCallbacks</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__init.html#ga77692d3c8770ea8882d573206bd27b2b">VmaDeviceMemoryCallbacks</a></td></tr>
<tr class="memdesc:ga77692d3c8770ea8882d573206bd27b2b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Set of callbacks that the library will call for <code>vkAllocateMemory</code> and <code>vkFreeMemory</code>. <a href="group__group__init.html#ga77692d3c8770ea8882d573206bd27b2b">More...</a><br /></td></tr>
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<tr class="memitem:gabb0a8e3b5040d847571cca6c7f9a8074"><td class="memItemLeft" align="right" valign="top">typedef struct <a class="el" href="struct_vma_vulkan_functions.html">VmaVulkanFunctions</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__init.html#gabb0a8e3b5040d847571cca6c7f9a8074">VmaVulkanFunctions</a></td></tr>
<tr class="memdesc:gabb0a8e3b5040d847571cca6c7f9a8074"><td class="mdescLeft">&#160;</td><td class="mdescRight">Pointers to some Vulkan functions - a subset used by the library. <a href="group__group__init.html#gabb0a8e3b5040d847571cca6c7f9a8074">More...</a><br /></td></tr>
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<tr class="memitem:gaad9652301d33759b83e52d4f3605a14a"><td class="memItemLeft" align="right" valign="top">typedef struct <a class="el" href="struct_vma_allocator_create_info.html">VmaAllocatorCreateInfo</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__init.html#gaad9652301d33759b83e52d4f3605a14a">VmaAllocatorCreateInfo</a></td></tr>
<tr class="memdesc:gaad9652301d33759b83e52d4f3605a14a"><td class="mdescLeft">&#160;</td><td class="mdescRight">Description of a Allocator to be created. <a href="group__group__init.html#gaad9652301d33759b83e52d4f3605a14a">More...</a><br /></td></tr>
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<tr class="memitem:ga1988031b0223fdbd564250fa1edd942c"><td class="memItemLeft" align="right" valign="top">typedef struct <a class="el" href="struct_vma_allocator_info.html">VmaAllocatorInfo</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__init.html#ga1988031b0223fdbd564250fa1edd942c">VmaAllocatorInfo</a></td></tr>
<tr class="memdesc:ga1988031b0223fdbd564250fa1edd942c"><td class="mdescLeft">&#160;</td><td class="mdescRight">Information about existing <a class="el" href="struct_vma_allocator.html" title="Represents main object of this library initialized.">VmaAllocator</a> object. <a href="group__group__init.html#ga1988031b0223fdbd564250fa1edd942c">More...</a><br /></td></tr>
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Enumerations</h2></td></tr>
<tr class="memitem:ga4f87c9100d154a65a4ad495f7763cf7c"><td class="memItemLeft" align="right" valign="top">enum &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__init.html#ga4f87c9100d154a65a4ad495f7763cf7c">VmaAllocatorCreateFlagBits</a> { <br />
&#160;&#160;<a class="el" href="group__group__init.html#gga4f87c9100d154a65a4ad495f7763cf7ca4816ddaed324ba110172ca608a20f29d">VMA_ALLOCATOR_CREATE_EXTERNALLY_SYNCHRONIZED_BIT</a> = 0x00000001
, <a class="el" href="group__group__init.html#gga4f87c9100d154a65a4ad495f7763cf7cace7da7cc6e71a625dfa763c55a597878">VMA_ALLOCATOR_CREATE_KHR_DEDICATED_ALLOCATION_BIT</a> = 0x00000002
, <a class="el" href="group__group__init.html#gga4f87c9100d154a65a4ad495f7763cf7ca8fb75bf07cd184ab903596295e863dee">VMA_ALLOCATOR_CREATE_KHR_BIND_MEMORY2_BIT</a> = 0x00000004
, <a class="el" href="group__group__init.html#gga4f87c9100d154a65a4ad495f7763cf7ca4d4687863f7bd4b418c6006dc04400b0">VMA_ALLOCATOR_CREATE_EXT_MEMORY_BUDGET_BIT</a> = 0x00000008
, <br />
&#160;&#160;<a class="el" href="group__group__init.html#gga4f87c9100d154a65a4ad495f7763cf7ca2acce4886d8078552efa38878413970f">VMA_ALLOCATOR_CREATE_AMD_DEVICE_COHERENT_MEMORY_BIT</a> = 0x00000010
, <a class="el" href="group__group__init.html#gga4f87c9100d154a65a4ad495f7763cf7ca5f1b28b0414319d1687e1f2b30ab0089">VMA_ALLOCATOR_CREATE_BUFFER_DEVICE_ADDRESS_BIT</a> = 0x00000020
, <a class="el" href="group__group__init.html#gga4f87c9100d154a65a4ad495f7763cf7caffdd7a5169be3dbd7cbf6b3619e4f78a">VMA_ALLOCATOR_CREATE_EXT_MEMORY_PRIORITY_BIT</a> = 0x00000040
, <a class="el" href="group__group__init.html#gga4f87c9100d154a65a4ad495f7763cf7cae4d5ad929caba5f23eb502b13bd5286c">VMA_ALLOCATOR_CREATE_FLAG_BITS_MAX_ENUM</a> = 0x7FFFFFFF
<br />
}</td></tr>
<tr class="memdesc:ga4f87c9100d154a65a4ad495f7763cf7c"><td class="mdescLeft">&#160;</td><td class="mdescRight">Flags for created <a class="el" href="struct_vma_allocator.html" title="Represents main object of this library initialized.">VmaAllocator</a>. <a href="group__group__init.html#ga4f87c9100d154a65a4ad495f7763cf7c">More...</a><br /></td></tr>
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Functions</h2></td></tr>
<tr class="memitem:ga200692051ddb34240248234f5f4c17bb"><td class="memItemLeft" align="right" valign="top">VkResult&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__init.html#ga200692051ddb34240248234f5f4c17bb">vmaCreateAllocator</a> (const <a class="el" href="struct_vma_allocator_create_info.html">VmaAllocatorCreateInfo</a> *pCreateInfo, <a class="el" href="struct_vma_allocator.html">VmaAllocator</a> *pAllocator)</td></tr>
<tr class="memdesc:ga200692051ddb34240248234f5f4c17bb"><td class="mdescLeft">&#160;</td><td class="mdescRight">Creates <a class="el" href="struct_vma_allocator.html" title="Represents main object of this library initialized.">VmaAllocator</a> object. <a href="group__group__init.html#ga200692051ddb34240248234f5f4c17bb">More...</a><br /></td></tr>
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<tr class="memitem:gaa8d164061c88f22fb1fd3c8f3534bc1d"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__init.html#gaa8d164061c88f22fb1fd3c8f3534bc1d">vmaDestroyAllocator</a> (<a class="el" href="struct_vma_allocator.html">VmaAllocator</a> allocator)</td></tr>
<tr class="memdesc:gaa8d164061c88f22fb1fd3c8f3534bc1d"><td class="mdescLeft">&#160;</td><td class="mdescRight">Destroys allocator object. <a href="group__group__init.html#gaa8d164061c88f22fb1fd3c8f3534bc1d">More...</a><br /></td></tr>
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<tr class="memitem:gafa02231a791b37255720d566a52683e7"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__init.html#gafa02231a791b37255720d566a52683e7">vmaGetAllocatorInfo</a> (<a class="el" href="struct_vma_allocator.html">VmaAllocator</a> allocator, <a class="el" href="struct_vma_allocator_info.html">VmaAllocatorInfo</a> *pAllocatorInfo)</td></tr>
<tr class="memdesc:gafa02231a791b37255720d566a52683e7"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns information about existing <a class="el" href="struct_vma_allocator.html" title="Represents main object of this library initialized.">VmaAllocator</a> object - handle to Vulkan device etc. <a href="group__group__init.html#gafa02231a791b37255720d566a52683e7">More...</a><br /></td></tr>
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<tr class="memitem:gaecabf7b6e91ea87d0316fa0a9e014fe0"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__init.html#gaecabf7b6e91ea87d0316fa0a9e014fe0">vmaGetPhysicalDeviceProperties</a> (<a class="el" href="struct_vma_allocator.html">VmaAllocator</a> allocator, const VkPhysicalDeviceProperties **ppPhysicalDeviceProperties)</td></tr>
<tr class="separator:gaecabf7b6e91ea87d0316fa0a9e014fe0"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gab88db292a17974f911182543fda52d19"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__init.html#gab88db292a17974f911182543fda52d19">vmaGetMemoryProperties</a> (<a class="el" href="struct_vma_allocator.html">VmaAllocator</a> allocator, const VkPhysicalDeviceMemoryProperties **ppPhysicalDeviceMemoryProperties)</td></tr>
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<tr class="memitem:ga8701444752eb5de4464adb5a2b514bca"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__init.html#ga8701444752eb5de4464adb5a2b514bca">vmaGetMemoryTypeProperties</a> (<a class="el" href="struct_vma_allocator.html">VmaAllocator</a> allocator, uint32_t memoryTypeIndex, VkMemoryPropertyFlags *pFlags)</td></tr>
<tr class="memdesc:ga8701444752eb5de4464adb5a2b514bca"><td class="mdescLeft">&#160;</td><td class="mdescRight">Given Memory Type Index, returns Property Flags of this memory type. <a href="group__group__init.html#ga8701444752eb5de4464adb5a2b514bca">More...</a><br /></td></tr>
<tr class="separator:ga8701444752eb5de4464adb5a2b514bca"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gade56bf8dc9f5a5eaddf5f119ed525236"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__init.html#gade56bf8dc9f5a5eaddf5f119ed525236">vmaSetCurrentFrameIndex</a> (<a class="el" href="struct_vma_allocator.html">VmaAllocator</a> allocator, uint32_t frameIndex)</td></tr>
<tr class="memdesc:gade56bf8dc9f5a5eaddf5f119ed525236"><td class="mdescLeft">&#160;</td><td class="mdescRight">Sets index of the current frame. <a href="group__group__init.html#gade56bf8dc9f5a5eaddf5f119ed525236">More...</a><br /></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<p >API elements related to the initialization and management of the entire library, especially <a class="el" href="struct_vma_allocator.html" title="Represents main object of this library initialized.">VmaAllocator</a> object. </p>
<h2 class="groupheader">Typedef Documentation</h2>
<a id="ga7e1ed85f7799600b03ad51a77acc21f3" name="ga7e1ed85f7799600b03ad51a77acc21f3"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga7e1ed85f7799600b03ad51a77acc21f3">&#9670;&nbsp;</a></span>PFN_vmaAllocateDeviceMemoryFunction</h2>
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<td class="memname">typedef void(VKAPI_PTR * PFN_vmaAllocateDeviceMemoryFunction) (<a class="el" href="struct_vma_allocator.html">VmaAllocator</a> allocator, uint32_t memoryType, VkDeviceMemory memory, VkDeviceSize size, void *pUserData)</td>
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<p>Callback function called after successful vkAllocateMemory. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ga154ccaaf53dc2c36378f80f0c4f3679b">&#9670;&nbsp;</a></span>PFN_vmaFreeDeviceMemoryFunction</h2>
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<td class="memname">typedef void(VKAPI_PTR * PFN_vmaFreeDeviceMemoryFunction) (<a class="el" href="struct_vma_allocator.html">VmaAllocator</a> allocator, uint32_t memoryType, VkDeviceMemory memory, VkDeviceSize size, void *pUserData)</td>
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<p>Callback function called before vkFreeMemory. </p>
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<a id="gafd73b95e737ee7e76f827cb5472f559f" name="gafd73b95e737ee7e76f827cb5472f559f"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gafd73b95e737ee7e76f827cb5472f559f">&#9670;&nbsp;</a></span>VmaAllocatorCreateFlagBits</h2>
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<td class="memname">typedef enum <a class="el" href="group__group__init.html#ga4f87c9100d154a65a4ad495f7763cf7c">VmaAllocatorCreateFlagBits</a> <a class="el" href="group__group__init.html#ga4f87c9100d154a65a4ad495f7763cf7c">VmaAllocatorCreateFlagBits</a></td>
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<p>Flags for created <a class="el" href="struct_vma_allocator.html" title="Represents main object of this library initialized.">VmaAllocator</a>. </p>
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<a id="gacfe6863e160722c2c1bbcf7573fddc4d" name="gacfe6863e160722c2c1bbcf7573fddc4d"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gacfe6863e160722c2c1bbcf7573fddc4d">&#9670;&nbsp;</a></span>VmaAllocatorCreateFlags</h2>
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<td class="memname">typedef VkFlags <a class="el" href="group__group__init.html#gacfe6863e160722c2c1bbcf7573fddc4d">VmaAllocatorCreateFlags</a></td>
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<p>See <a class="el" href="group__group__init.html#ga4f87c9100d154a65a4ad495f7763cf7c" title="Flags for created VmaAllocator.">VmaAllocatorCreateFlagBits</a>. </p>
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<a id="gaad9652301d33759b83e52d4f3605a14a" name="gaad9652301d33759b83e52d4f3605a14a"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gaad9652301d33759b83e52d4f3605a14a">&#9670;&nbsp;</a></span>VmaAllocatorCreateInfo</h2>
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<td class="memname">typedef struct <a class="el" href="struct_vma_allocator_create_info.html">VmaAllocatorCreateInfo</a> <a class="el" href="struct_vma_allocator_create_info.html">VmaAllocatorCreateInfo</a></td>
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<p>Description of a Allocator to be created. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ga1988031b0223fdbd564250fa1edd942c">&#9670;&nbsp;</a></span>VmaAllocatorInfo</h2>
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<td class="memname">typedef struct <a class="el" href="struct_vma_allocator_info.html">VmaAllocatorInfo</a> <a class="el" href="struct_vma_allocator_info.html">VmaAllocatorInfo</a></td>
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<p>Information about existing <a class="el" href="struct_vma_allocator.html" title="Represents main object of this library initialized.">VmaAllocator</a> object. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ga77692d3c8770ea8882d573206bd27b2b">&#9670;&nbsp;</a></span>VmaDeviceMemoryCallbacks</h2>
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<td class="memname">typedef struct <a class="el" href="struct_vma_device_memory_callbacks.html">VmaDeviceMemoryCallbacks</a> <a class="el" href="struct_vma_device_memory_callbacks.html">VmaDeviceMemoryCallbacks</a></td>
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<p>Set of callbacks that the library will call for <code>vkAllocateMemory</code> and <code>vkFreeMemory</code>. </p>
<p >Provided for informative purpose, e.g. to gather statistics about number of allocations or total amount of memory allocated in Vulkan.</p>
<p >Used in <a class="el" href="struct_vma_allocator_create_info.html#af1380969b5e1ea4c3184a877892d260e" title="Informative callbacks for vkAllocateMemory, vkFreeMemory. Optional.">VmaAllocatorCreateInfo::pDeviceMemoryCallbacks</a>. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#gabb0a8e3b5040d847571cca6c7f9a8074">&#9670;&nbsp;</a></span>VmaVulkanFunctions</h2>
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<td class="memname">typedef struct <a class="el" href="struct_vma_vulkan_functions.html">VmaVulkanFunctions</a> <a class="el" href="struct_vma_vulkan_functions.html">VmaVulkanFunctions</a></td>
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<p>Pointers to some Vulkan functions - a subset used by the library. </p>
<p >Used in <a class="el" href="struct_vma_allocator_create_info.html#a3dc197be3227da7338b1643f70db36bd" title="Pointers to Vulkan functions. Can be null.">VmaAllocatorCreateInfo::pVulkanFunctions</a>. </p>
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<h2 class="groupheader">Enumeration Type Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#ga4f87c9100d154a65a4ad495f7763cf7c">&#9670;&nbsp;</a></span>VmaAllocatorCreateFlagBits</h2>
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<td class="memname">enum <a class="el" href="group__group__init.html#ga4f87c9100d154a65a4ad495f7763cf7c">VmaAllocatorCreateFlagBits</a></td>
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<p>Flags for created <a class="el" href="struct_vma_allocator.html" title="Represents main object of this library initialized.">VmaAllocator</a>. </p>
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<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><a id="gga4f87c9100d154a65a4ad495f7763cf7ca4816ddaed324ba110172ca608a20f29d" name="gga4f87c9100d154a65a4ad495f7763cf7ca4816ddaed324ba110172ca608a20f29d"></a>VMA_ALLOCATOR_CREATE_EXTERNALLY_SYNCHRONIZED_BIT&#160;</td><td class="fielddoc"><p >Allocator and all objects created from it will not be synchronized internally, so you must guarantee they are used from only one thread at a time or synchronized externally by you. </p>
<p >Using this flag may increase performance because internal mutexes are not used. </p>
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<tr><td class="fieldname"><a id="gga4f87c9100d154a65a4ad495f7763cf7cace7da7cc6e71a625dfa763c55a597878" name="gga4f87c9100d154a65a4ad495f7763cf7cace7da7cc6e71a625dfa763c55a597878"></a>VMA_ALLOCATOR_CREATE_KHR_DEDICATED_ALLOCATION_BIT&#160;</td><td class="fielddoc"><p >Enables usage of VK_KHR_dedicated_allocation extension. </p>
<p >The flag works only if <a class="el" href="struct_vma_allocator_create_info.html#ae0ffc55139b54520a6bb704b29ffc285" title="Optional. The highest version of Vulkan that the application is designed to use.">VmaAllocatorCreateInfo::vulkanApiVersion</a> <code>== VK_API_VERSION_1_0</code>. When it is <code>VK_API_VERSION_1_1</code>, the flag is ignored because the extension has been promoted to Vulkan 1.1.</p>
<p >Using this extension will automatically allocate dedicated blocks of memory for some buffers and images instead of suballocating place for them out of bigger memory blocks (as if you explicitly used <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a3fc311d855c2ff53f1090ef5c722b38f" title="Set this flag if the allocation should have its own memory block.">VMA_ALLOCATION_CREATE_DEDICATED_MEMORY_BIT</a> flag) when it is recommended by the driver. It may improve performance on some GPUs.</p>
<p >You may set this flag only if you found out that following device extensions are supported, you enabled them while creating Vulkan device passed as <a class="el" href="struct_vma_allocator_create_info.html#ad924ddd77b04039c88d0c09b0ffcd500" title="Vulkan device.">VmaAllocatorCreateInfo::device</a>, and you want them to be used internally by this library:</p>
<ul>
<li>VK_KHR_get_memory_requirements2 (device extension)</li>
<li>VK_KHR_dedicated_allocation (device extension)</li>
</ul>
<p >When this flag is set, you can experience following warnings reported by Vulkan validation layer. You can ignore them.</p>
<blockquote class="doxtable">
<p >&zwj;vkBindBufferMemory(): Binding memory to buffer 0x2d but vkGetBufferMemoryRequirements() has not been called on that buffer. </p>
</blockquote>
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<tr><td class="fieldname"><a id="gga4f87c9100d154a65a4ad495f7763cf7ca8fb75bf07cd184ab903596295e863dee" name="gga4f87c9100d154a65a4ad495f7763cf7ca8fb75bf07cd184ab903596295e863dee"></a>VMA_ALLOCATOR_CREATE_KHR_BIND_MEMORY2_BIT&#160;</td><td class="fielddoc"><p >Enables usage of VK_KHR_bind_memory2 extension.</p>
<p >The flag works only if <a class="el" href="struct_vma_allocator_create_info.html#ae0ffc55139b54520a6bb704b29ffc285" title="Optional. The highest version of Vulkan that the application is designed to use.">VmaAllocatorCreateInfo::vulkanApiVersion</a> <code>== VK_API_VERSION_1_0</code>. When it is <code>VK_API_VERSION_1_1</code>, the flag is ignored because the extension has been promoted to Vulkan 1.1.</p>
<p >You may set this flag only if you found out that this device extension is supported, you enabled it while creating Vulkan device passed as <a class="el" href="struct_vma_allocator_create_info.html#ad924ddd77b04039c88d0c09b0ffcd500" title="Vulkan device.">VmaAllocatorCreateInfo::device</a>, and you want it to be used internally by this library.</p>
<p >The extension provides functions <code>vkBindBufferMemory2KHR</code> and <code>vkBindImageMemory2KHR</code>, which allow to pass a chain of <code>pNext</code> structures while binding. This flag is required if you use <code>pNext</code> parameter in <a class="el" href="group__group__alloc.html#ga927c944f45e0f2941182abb6f608e64a" title="Binds buffer to allocation with additional parameters.">vmaBindBufferMemory2()</a> or <a class="el" href="group__group__alloc.html#gaa8251ee81b0045a443e35b8e8aa021bc" title="Binds image to allocation with additional parameters.">vmaBindImageMemory2()</a>. </p>
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<tr><td class="fieldname"><a id="gga4f87c9100d154a65a4ad495f7763cf7ca4d4687863f7bd4b418c6006dc04400b0" name="gga4f87c9100d154a65a4ad495f7763cf7ca4d4687863f7bd4b418c6006dc04400b0"></a>VMA_ALLOCATOR_CREATE_EXT_MEMORY_BUDGET_BIT&#160;</td><td class="fielddoc"><p >Enables usage of VK_EXT_memory_budget extension.</p>
<p >You may set this flag only if you found out that this device extension is supported, you enabled it while creating Vulkan device passed as <a class="el" href="struct_vma_allocator_create_info.html#ad924ddd77b04039c88d0c09b0ffcd500" title="Vulkan device.">VmaAllocatorCreateInfo::device</a>, and you want it to be used internally by this library, along with another instance extension VK_KHR_get_physical_device_properties2, which is required by it (or Vulkan 1.1, where this extension is promoted).</p>
<p >The extension provides query for current memory usage and budget, which will probably be more accurate than an estimation used by the library otherwise. </p>
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<tr><td class="fieldname"><a id="gga4f87c9100d154a65a4ad495f7763cf7ca2acce4886d8078552efa38878413970f" name="gga4f87c9100d154a65a4ad495f7763cf7ca2acce4886d8078552efa38878413970f"></a>VMA_ALLOCATOR_CREATE_AMD_DEVICE_COHERENT_MEMORY_BIT&#160;</td><td class="fielddoc"><p >Enables usage of VK_AMD_device_coherent_memory extension.</p>
<p >You may set this flag only if you:</p>
<ul>
<li>found out that this device extension is supported and enabled it while creating Vulkan device passed as <a class="el" href="struct_vma_allocator_create_info.html#ad924ddd77b04039c88d0c09b0ffcd500" title="Vulkan device.">VmaAllocatorCreateInfo::device</a>,</li>
<li>checked that <code>VkPhysicalDeviceCoherentMemoryFeaturesAMD::deviceCoherentMemory</code> is true and set it while creating the Vulkan device,</li>
<li>want it to be used internally by this library.</li>
</ul>
<p >The extension and accompanying device feature provide access to memory types with <code>VK_MEMORY_PROPERTY_DEVICE_COHERENT_BIT_AMD</code> and <code>VK_MEMORY_PROPERTY_DEVICE_UNCACHED_BIT_AMD</code> flags. They are useful mostly for writing breadcrumb markers - a common method for debugging GPU crash/hang/TDR.</p>
<p >When the extension is not enabled, such memory types are still enumerated, but their usage is illegal. To protect from this error, if you don't create the allocator with this flag, it will refuse to allocate any memory or create a custom pool in such memory type, returning <code>VK_ERROR_FEATURE_NOT_PRESENT</code>. </p>
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<tr><td class="fieldname"><a id="gga4f87c9100d154a65a4ad495f7763cf7ca5f1b28b0414319d1687e1f2b30ab0089" name="gga4f87c9100d154a65a4ad495f7763cf7ca5f1b28b0414319d1687e1f2b30ab0089"></a>VMA_ALLOCATOR_CREATE_BUFFER_DEVICE_ADDRESS_BIT&#160;</td><td class="fielddoc"><p >Enables usage of "buffer device address" feature, which allows you to use function <code>vkGetBufferDeviceAddress*</code> to get raw GPU pointer to a buffer and pass it for usage inside a shader.</p>
<p >You may set this flag only if you:</p>
<ol type="1">
<li>(For Vulkan version &lt; 1.2) Found as available and enabled device extension VK_KHR_buffer_device_address. This extension is promoted to core Vulkan 1.2.</li>
<li>Found as available and enabled device feature <code>VkPhysicalDeviceBufferDeviceAddressFeatures::bufferDeviceAddress</code>.</li>
</ol>
<p >When this flag is set, you can create buffers with <code>VK_BUFFER_USAGE_SHADER_DEVICE_ADDRESS_BIT</code> using VMA. The library automatically adds <code>VK_MEMORY_ALLOCATE_DEVICE_ADDRESS_BIT</code> to allocated memory blocks wherever it might be needed.</p>
<p >For more information, see documentation chapter <a class="el" href="enabling_buffer_device_address.html">Enabling buffer device address</a>. </p>
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<tr><td class="fieldname"><a id="gga4f87c9100d154a65a4ad495f7763cf7caffdd7a5169be3dbd7cbf6b3619e4f78a" name="gga4f87c9100d154a65a4ad495f7763cf7caffdd7a5169be3dbd7cbf6b3619e4f78a"></a>VMA_ALLOCATOR_CREATE_EXT_MEMORY_PRIORITY_BIT&#160;</td><td class="fielddoc"><p >Enables usage of VK_EXT_memory_priority extension in the library.</p>
<p >You may set this flag only if you found available and enabled this device extension, along with <code>VkPhysicalDeviceMemoryPriorityFeaturesEXT::memoryPriority == VK_TRUE</code>, while creating Vulkan device passed as <a class="el" href="struct_vma_allocator_create_info.html#ad924ddd77b04039c88d0c09b0ffcd500" title="Vulkan device.">VmaAllocatorCreateInfo::device</a>.</p>
<p >When this flag is used, <a class="el" href="struct_vma_allocation_create_info.html#a983d39e1a2e63649d78a960aa2fdd0f7" title="A floating-point value between 0 and 1, indicating the priority of the allocation relative to other m...">VmaAllocationCreateInfo::priority</a> and <a class="el" href="struct_vma_pool_create_info.html#a16e686c688f6725f119ebf6e24ab5274" title="A floating-point value between 0 and 1, indicating the priority of the allocations in this pool relat...">VmaPoolCreateInfo::priority</a> are used to set priorities of allocated Vulkan memory. Without it, these variables are ignored.</p>
<p >A priority must be a floating-point value between 0 and 1, indicating the priority of the allocation relative to other memory allocations. Larger values are higher priority. The granularity of the priorities is implementation-dependent. It is automatically passed to every call to <code>vkAllocateMemory</code> done by the library using structure <code>VkMemoryPriorityAllocateInfoEXT</code>. The value to be used for default priority is 0.5. For more details, see the documentation of the VK_EXT_memory_priority extension. </p>
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<h2 class="groupheader">Function Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#ga200692051ddb34240248234f5f4c17bb">&#9670;&nbsp;</a></span>vmaCreateAllocator()</h2>
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<td class="memname">VkResult vmaCreateAllocator </td>
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<td class="paramtype">const <a class="el" href="struct_vma_allocator_create_info.html">VmaAllocatorCreateInfo</a> *&#160;</td>
<td class="paramname"><em>pCreateInfo</em>, </td>
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<td class="paramtype"><a class="el" href="struct_vma_allocator.html">VmaAllocator</a> *&#160;</td>
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<p>Creates <a class="el" href="struct_vma_allocator.html" title="Represents main object of this library initialized.">VmaAllocator</a> object. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#gaa8d164061c88f22fb1fd3c8f3534bc1d">&#9670;&nbsp;</a></span>vmaDestroyAllocator()</h2>
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<td class="memname">void vmaDestroyAllocator </td>
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<p>Destroys allocator object. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#gafa02231a791b37255720d566a52683e7">&#9670;&nbsp;</a></span>vmaGetAllocatorInfo()</h2>
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<td class="memname">void vmaGetAllocatorInfo </td>
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<td class="paramtype"><a class="el" href="struct_vma_allocator.html">VmaAllocator</a>&#160;</td>
<td class="paramname"><em>allocator</em>, </td>
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<td class="paramtype"><a class="el" href="struct_vma_allocator_info.html">VmaAllocatorInfo</a> *&#160;</td>
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<p>Returns information about existing <a class="el" href="struct_vma_allocator.html" title="Represents main object of this library initialized.">VmaAllocator</a> object - handle to Vulkan device etc. </p>
<p >It might be useful if you want to keep just the <a class="el" href="struct_vma_allocator.html" title="Represents main object of this library initialized.">VmaAllocator</a> handle and fetch other required handles to <code>VkPhysicalDevice</code>, <code>VkDevice</code> etc. every time using this function. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#gab88db292a17974f911182543fda52d19">&#9670;&nbsp;</a></span>vmaGetMemoryProperties()</h2>
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<td class="memname">void vmaGetMemoryProperties </td>
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<p >PhysicalDeviceMemoryProperties are fetched from physicalDevice by the allocator. You can access it here, without fetching it again on your own. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ga8701444752eb5de4464adb5a2b514bca">&#9670;&nbsp;</a></span>vmaGetMemoryTypeProperties()</h2>
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<td class="memname">void vmaGetMemoryTypeProperties </td>
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<td class="paramtype"><a class="el" href="struct_vma_allocator.html">VmaAllocator</a>&#160;</td>
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<p>Given Memory Type Index, returns Property Flags of this memory type. </p>
<p >This is just a convenience function. Same information can be obtained using <a class="el" href="group__group__init.html#gab88db292a17974f911182543fda52d19">vmaGetMemoryProperties()</a>. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#gaecabf7b6e91ea87d0316fa0a9e014fe0">&#9670;&nbsp;</a></span>vmaGetPhysicalDeviceProperties()</h2>
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<td class="memname">void vmaGetPhysicalDeviceProperties </td>
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<p >PhysicalDeviceProperties are fetched from physicalDevice by the allocator. You can access it here, without fetching it again on your own. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#gade56bf8dc9f5a5eaddf5f119ed525236">&#9670;&nbsp;</a></span>vmaSetCurrentFrameIndex()</h2>
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<td class="memname">void vmaSetCurrentFrameIndex </td>
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<p>Sets index of the current frame. </p>
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<p>API elements that query current status of the allocator, from memory usage, budget, to full dump of the internal state in JSON format. See documentation chapter: <a class="el" href="statistics.html">Statistics</a>.
<a href="#details">More...</a></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="nested-classes" name="nested-classes"></a>
Classes</h2></td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_vma_statistics.html">VmaStatistics</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Calculated statistics of memory usage e.g. in a specific memory type, heap, custom pool, or total. <a href="struct_vma_statistics.html#details">More...</a><br /></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_vma_detailed_statistics.html">VmaDetailedStatistics</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">More detailed statistics than <a class="el" href="struct_vma_statistics.html" title="Calculated statistics of memory usage e.g. in a specific memory type, heap, custom pool,...">VmaStatistics</a>. <a href="struct_vma_detailed_statistics.html#details">More...</a><br /></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_vma_total_statistics.html">VmaTotalStatistics</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">General statistics from current state of the Allocator - total memory usage across all memory heaps and types. <a href="struct_vma_total_statistics.html#details">More...</a><br /></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_vma_budget.html">VmaBudget</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Statistics of current memory usage and available budget for a specific memory heap. <a href="struct_vma_budget.html#details">More...</a><br /></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
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Typedefs</h2></td></tr>
<tr class="memitem:gac94bd1a382a3922ddc8de3af4d3ddd06"><td class="memItemLeft" align="right" valign="top">typedef struct <a class="el" href="struct_vma_statistics.html">VmaStatistics</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__stats.html#gac94bd1a382a3922ddc8de3af4d3ddd06">VmaStatistics</a></td></tr>
<tr class="memdesc:gac94bd1a382a3922ddc8de3af4d3ddd06"><td class="mdescLeft">&#160;</td><td class="mdescRight">Calculated statistics of memory usage e.g. in a specific memory type, heap, custom pool, or total. <a href="group__group__stats.html#gac94bd1a382a3922ddc8de3af4d3ddd06">More...</a><br /></td></tr>
<tr class="separator:gac94bd1a382a3922ddc8de3af4d3ddd06"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga9ab0c535a6ca655dc63b8609ab4b8394"><td class="memItemLeft" align="right" valign="top">typedef struct <a class="el" href="struct_vma_detailed_statistics.html">VmaDetailedStatistics</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__stats.html#ga9ab0c535a6ca655dc63b8609ab4b8394">VmaDetailedStatistics</a></td></tr>
<tr class="memdesc:ga9ab0c535a6ca655dc63b8609ab4b8394"><td class="mdescLeft">&#160;</td><td class="mdescRight">More detailed statistics than <a class="el" href="struct_vma_statistics.html" title="Calculated statistics of memory usage e.g. in a specific memory type, heap, custom pool,...">VmaStatistics</a>. <a href="group__group__stats.html#ga9ab0c535a6ca655dc63b8609ab4b8394">More...</a><br /></td></tr>
<tr class="separator:ga9ab0c535a6ca655dc63b8609ab4b8394"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga68916e729e55d513f88ffafbadddb770"><td class="memItemLeft" align="right" valign="top">typedef struct <a class="el" href="struct_vma_total_statistics.html">VmaTotalStatistics</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__stats.html#ga68916e729e55d513f88ffafbadddb770">VmaTotalStatistics</a></td></tr>
<tr class="memdesc:ga68916e729e55d513f88ffafbadddb770"><td class="mdescLeft">&#160;</td><td class="mdescRight">General statistics from current state of the Allocator - total memory usage across all memory heaps and types. <a href="group__group__stats.html#ga68916e729e55d513f88ffafbadddb770">More...</a><br /></td></tr>
<tr class="separator:ga68916e729e55d513f88ffafbadddb770"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gaa078667e71b1ef24e87a6a30d128381d"><td class="memItemLeft" align="right" valign="top">typedef struct <a class="el" href="struct_vma_budget.html">VmaBudget</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__stats.html#gaa078667e71b1ef24e87a6a30d128381d">VmaBudget</a></td></tr>
<tr class="memdesc:gaa078667e71b1ef24e87a6a30d128381d"><td class="mdescLeft">&#160;</td><td class="mdescRight">Statistics of current memory usage and available budget for a specific memory heap. <a href="group__group__stats.html#gaa078667e71b1ef24e87a6a30d128381d">More...</a><br /></td></tr>
<tr class="separator:gaa078667e71b1ef24e87a6a30d128381d"><td class="memSeparator" colspan="2">&#160;</td></tr>
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Functions</h2></td></tr>
<tr class="memitem:ga36f3484de7aa6cd6edc4de9edfa0ff59"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__stats.html#ga36f3484de7aa6cd6edc4de9edfa0ff59">vmaCalculateStatistics</a> (<a class="el" href="struct_vma_allocator.html">VmaAllocator</a> allocator, <a class="el" href="struct_vma_total_statistics.html">VmaTotalStatistics</a> *pStats)</td></tr>
<tr class="memdesc:ga36f3484de7aa6cd6edc4de9edfa0ff59"><td class="mdescLeft">&#160;</td><td class="mdescRight">Retrieves statistics from current state of the Allocator. <a href="group__group__stats.html#ga36f3484de7aa6cd6edc4de9edfa0ff59">More...</a><br /></td></tr>
<tr class="separator:ga36f3484de7aa6cd6edc4de9edfa0ff59"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga9f88db9d46a432c0ad7278cecbc5eaa7"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__stats.html#ga9f88db9d46a432c0ad7278cecbc5eaa7">vmaGetHeapBudgets</a> (<a class="el" href="struct_vma_allocator.html">VmaAllocator</a> allocator, <a class="el" href="struct_vma_budget.html">VmaBudget</a> *pBudgets)</td></tr>
<tr class="memdesc:ga9f88db9d46a432c0ad7278cecbc5eaa7"><td class="mdescLeft">&#160;</td><td class="mdescRight">Retrieves information about current memory usage and budget for all memory heaps. <a href="group__group__stats.html#ga9f88db9d46a432c0ad7278cecbc5eaa7">More...</a><br /></td></tr>
<tr class="separator:ga9f88db9d46a432c0ad7278cecbc5eaa7"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga34d8e7d83774eed0caee5c5ae88e217d"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__stats.html#ga34d8e7d83774eed0caee5c5ae88e217d">vmaGetPoolStatistics</a> (<a class="el" href="struct_vma_allocator.html">VmaAllocator</a> allocator, <a class="el" href="struct_vma_pool.html">VmaPool</a> pool, <a class="el" href="struct_vma_statistics.html">VmaStatistics</a> *pPoolStats)</td></tr>
<tr class="memdesc:ga34d8e7d83774eed0caee5c5ae88e217d"><td class="mdescLeft">&#160;</td><td class="mdescRight">Retrieves statistics of existing <a class="el" href="struct_vma_pool.html" title="Represents custom memory pool.">VmaPool</a> object. <a href="group__group__stats.html#ga34d8e7d83774eed0caee5c5ae88e217d">More...</a><br /></td></tr>
<tr class="separator:ga34d8e7d83774eed0caee5c5ae88e217d"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga50ba0eb25d2b363b792be4645ca7a380"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__stats.html#ga50ba0eb25d2b363b792be4645ca7a380">vmaCalculatePoolStatistics</a> (<a class="el" href="struct_vma_allocator.html">VmaAllocator</a> allocator, <a class="el" href="struct_vma_pool.html">VmaPool</a> pool, <a class="el" href="struct_vma_detailed_statistics.html">VmaDetailedStatistics</a> *pPoolStats)</td></tr>
<tr class="memdesc:ga50ba0eb25d2b363b792be4645ca7a380"><td class="mdescLeft">&#160;</td><td class="mdescRight">Retrieves detailed statistics of existing <a class="el" href="struct_vma_pool.html" title="Represents custom memory pool.">VmaPool</a> object. <a href="group__group__stats.html#ga50ba0eb25d2b363b792be4645ca7a380">More...</a><br /></td></tr>
<tr class="separator:ga50ba0eb25d2b363b792be4645ca7a380"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga52d810e1222c592e5d80556ad005f1e6"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__stats.html#ga52d810e1222c592e5d80556ad005f1e6">vmaBuildVirtualBlockStatsString</a> (<a class="el" href="struct_vma_virtual_block.html">VmaVirtualBlock</a> virtualBlock, char **ppStatsString, VkBool32 detailedMap)</td></tr>
<tr class="memdesc:ga52d810e1222c592e5d80556ad005f1e6"><td class="mdescLeft">&#160;</td><td class="mdescRight">Builds and returns a null-terminated string in JSON format with information about given <a class="el" href="struct_vma_virtual_block.html" title="Handle to a virtual block object that allows to use core allocation algorithm without allocating any ...">VmaVirtualBlock</a>. <a href="group__group__stats.html#ga52d810e1222c592e5d80556ad005f1e6">More...</a><br /></td></tr>
<tr class="separator:ga52d810e1222c592e5d80556ad005f1e6"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga47fb8d8aa69df4a7c23a9719b4080623"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__stats.html#ga47fb8d8aa69df4a7c23a9719b4080623">vmaFreeVirtualBlockStatsString</a> (<a class="el" href="struct_vma_virtual_block.html">VmaVirtualBlock</a> virtualBlock, char *pStatsString)</td></tr>
<tr class="memdesc:ga47fb8d8aa69df4a7c23a9719b4080623"><td class="mdescLeft">&#160;</td><td class="mdescRight">Frees a string returned by <a class="el" href="group__group__stats.html#ga52d810e1222c592e5d80556ad005f1e6" title="Builds and returns a null-terminated string in JSON format with information about given VmaVirtualBlo...">vmaBuildVirtualBlockStatsString()</a>. <a href="group__group__stats.html#ga47fb8d8aa69df4a7c23a9719b4080623">More...</a><br /></td></tr>
<tr class="separator:ga47fb8d8aa69df4a7c23a9719b4080623"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gaa4fee7eb5253377599ef4fd38c93c2a0"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__stats.html#gaa4fee7eb5253377599ef4fd38c93c2a0">vmaBuildStatsString</a> (<a class="el" href="struct_vma_allocator.html">VmaAllocator</a> allocator, char **ppStatsString, VkBool32 detailedMap)</td></tr>
<tr class="memdesc:gaa4fee7eb5253377599ef4fd38c93c2a0"><td class="mdescLeft">&#160;</td><td class="mdescRight">Builds and returns statistics as a null-terminated string in JSON format. <a href="group__group__stats.html#gaa4fee7eb5253377599ef4fd38c93c2a0">More...</a><br /></td></tr>
<tr class="separator:gaa4fee7eb5253377599ef4fd38c93c2a0"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga3104eb30d8122c84dd8541063f145288"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__stats.html#ga3104eb30d8122c84dd8541063f145288">vmaFreeStatsString</a> (<a class="el" href="struct_vma_allocator.html">VmaAllocator</a> allocator, char *pStatsString)</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<p >API elements that query current status of the allocator, from memory usage, budget, to full dump of the internal state in JSON format. See documentation chapter: <a class="el" href="statistics.html">Statistics</a>. </p>
<h2 class="groupheader">Typedef Documentation</h2>
<a id="gaa078667e71b1ef24e87a6a30d128381d" name="gaa078667e71b1ef24e87a6a30d128381d"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gaa078667e71b1ef24e87a6a30d128381d">&#9670;&nbsp;</a></span>VmaBudget</h2>
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<td class="memname">typedef struct <a class="el" href="struct_vma_budget.html">VmaBudget</a> <a class="el" href="struct_vma_budget.html">VmaBudget</a></td>
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<p>Statistics of current memory usage and available budget for a specific memory heap. </p>
<p >These are fast to calculate. See function <a class="el" href="group__group__stats.html#ga9f88db9d46a432c0ad7278cecbc5eaa7" title="Retrieves information about current memory usage and budget for all memory heaps.">vmaGetHeapBudgets()</a>. </p>
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<a id="ga9ab0c535a6ca655dc63b8609ab4b8394" name="ga9ab0c535a6ca655dc63b8609ab4b8394"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga9ab0c535a6ca655dc63b8609ab4b8394">&#9670;&nbsp;</a></span>VmaDetailedStatistics</h2>
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<td class="memname">typedef struct <a class="el" href="struct_vma_detailed_statistics.html">VmaDetailedStatistics</a> <a class="el" href="struct_vma_detailed_statistics.html">VmaDetailedStatistics</a></td>
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<p>More detailed statistics than <a class="el" href="struct_vma_statistics.html" title="Calculated statistics of memory usage e.g. in a specific memory type, heap, custom pool,...">VmaStatistics</a>. </p>
<p >These are slower to calculate. Use for debugging purposes. See functions: <a class="el" href="group__group__stats.html#ga36f3484de7aa6cd6edc4de9edfa0ff59" title="Retrieves statistics from current state of the Allocator.">vmaCalculateStatistics()</a>, <a class="el" href="group__group__stats.html#ga50ba0eb25d2b363b792be4645ca7a380" title="Retrieves detailed statistics of existing VmaPool object.">vmaCalculatePoolStatistics()</a>.</p>
<p >Previous version of the statistics API provided averages, but they have been removed because they can be easily calculated as:</p>
<div class="fragment"><div class="line">VkDeviceSize allocationSizeAvg = detailedStats.statistics.allocationBytes / detailedStats.statistics.allocationCount;</div>
<div class="line">VkDeviceSize unusedBytes = detailedStats.statistics.blockBytes - detailedStats.statistics.allocationBytes;</div>
<div class="line">VkDeviceSize unusedRangeSizeAvg = unusedBytes / detailedStats.unusedRangeCount;</div>
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<a id="gac94bd1a382a3922ddc8de3af4d3ddd06" name="gac94bd1a382a3922ddc8de3af4d3ddd06"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gac94bd1a382a3922ddc8de3af4d3ddd06">&#9670;&nbsp;</a></span>VmaStatistics</h2>
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<td class="memname">typedef struct <a class="el" href="struct_vma_statistics.html">VmaStatistics</a> <a class="el" href="struct_vma_statistics.html">VmaStatistics</a></td>
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<p>Calculated statistics of memory usage e.g. in a specific memory type, heap, custom pool, or total. </p>
<p >These are fast to calculate. See functions: <a class="el" href="group__group__stats.html#ga9f88db9d46a432c0ad7278cecbc5eaa7" title="Retrieves information about current memory usage and budget for all memory heaps.">vmaGetHeapBudgets()</a>, <a class="el" href="group__group__stats.html#ga34d8e7d83774eed0caee5c5ae88e217d" title="Retrieves statistics of existing VmaPool object.">vmaGetPoolStatistics()</a>. </p>
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<a id="ga68916e729e55d513f88ffafbadddb770" name="ga68916e729e55d513f88ffafbadddb770"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga68916e729e55d513f88ffafbadddb770">&#9670;&nbsp;</a></span>VmaTotalStatistics</h2>
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<td class="memname">typedef struct <a class="el" href="struct_vma_total_statistics.html">VmaTotalStatistics</a> <a class="el" href="struct_vma_total_statistics.html">VmaTotalStatistics</a></td>
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<p>General statistics from current state of the Allocator - total memory usage across all memory heaps and types. </p>
<p >These are slower to calculate. Use for debugging purposes. See function <a class="el" href="group__group__stats.html#ga36f3484de7aa6cd6edc4de9edfa0ff59" title="Retrieves statistics from current state of the Allocator.">vmaCalculateStatistics()</a>. </p>
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<h2 class="groupheader">Function Documentation</h2>
<a id="gaa4fee7eb5253377599ef4fd38c93c2a0" name="gaa4fee7eb5253377599ef4fd38c93c2a0"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gaa4fee7eb5253377599ef4fd38c93c2a0">&#9670;&nbsp;</a></span>vmaBuildStatsString()</h2>
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<td class="memname">void vmaBuildStatsString </td>
<td>(</td>
<td class="paramtype"><a class="el" href="struct_vma_allocator.html">VmaAllocator</a>&#160;</td>
<td class="paramname"><em>allocator</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">char **&#160;</td>
<td class="paramname"><em>ppStatsString</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">VkBool32&#160;</td>
<td class="paramname"><em>detailedMap</em>&#160;</td>
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<td></td>
<td>)</td>
<td></td><td></td>
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<p>Builds and returns statistics as a null-terminated string in JSON format. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir"></td><td class="paramname">allocator</td><td></td></tr>
<tr><td class="paramdir">[out]</td><td class="paramname">ppStatsString</td><td>Must be freed using <a class="el" href="group__group__stats.html#ga3104eb30d8122c84dd8541063f145288">vmaFreeStatsString()</a> function. </td></tr>
<tr><td class="paramdir"></td><td class="paramname">detailedMap</td><td></td></tr>
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<a id="ga52d810e1222c592e5d80556ad005f1e6" name="ga52d810e1222c592e5d80556ad005f1e6"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga52d810e1222c592e5d80556ad005f1e6">&#9670;&nbsp;</a></span>vmaBuildVirtualBlockStatsString()</h2>
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<td class="memname">void vmaBuildVirtualBlockStatsString </td>
<td>(</td>
<td class="paramtype"><a class="el" href="struct_vma_virtual_block.html">VmaVirtualBlock</a>&#160;</td>
<td class="paramname"><em>virtualBlock</em>, </td>
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<td></td>
<td class="paramtype">char **&#160;</td>
<td class="paramname"><em>ppStatsString</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">VkBool32&#160;</td>
<td class="paramname"><em>detailedMap</em>&#160;</td>
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<td>)</td>
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<p>Builds and returns a null-terminated string in JSON format with information about given <a class="el" href="struct_vma_virtual_block.html" title="Handle to a virtual block object that allows to use core allocation algorithm without allocating any ...">VmaVirtualBlock</a>. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir"></td><td class="paramname">virtualBlock</td><td>Virtual block. </td></tr>
<tr><td class="paramdir">[out]</td><td class="paramname">ppStatsString</td><td>Returned string. </td></tr>
<tr><td class="paramdir"></td><td class="paramname">detailedMap</td><td>Pass <code>VK_FALSE</code> to only obtain statistics as returned by <a class="el" href="group__group__virtual.html#ga93c5741bca44b43e5b849cacbd616098" title="Calculates and returns detailed statistics about virtual allocations and memory usage in given VmaVir...">vmaCalculateVirtualBlockStatistics()</a>. Pass <code>VK_TRUE</code> to also obtain full list of allocations and free spaces.</td></tr>
</table>
</dd>
</dl>
<p>Returned string must be freed using <a class="el" href="group__group__stats.html#ga47fb8d8aa69df4a7c23a9719b4080623" title="Frees a string returned by vmaBuildVirtualBlockStatsString().">vmaFreeVirtualBlockStatsString()</a>. </p>
</div>
</div>
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<h2 class="memtitle"><span class="permalink"><a href="#ga50ba0eb25d2b363b792be4645ca7a380">&#9670;&nbsp;</a></span>vmaCalculatePoolStatistics()</h2>
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<td class="memname">void vmaCalculatePoolStatistics </td>
<td>(</td>
<td class="paramtype"><a class="el" href="struct_vma_allocator.html">VmaAllocator</a>&#160;</td>
<td class="paramname"><em>allocator</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="struct_vma_pool.html">VmaPool</a>&#160;</td>
<td class="paramname"><em>pool</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="struct_vma_detailed_statistics.html">VmaDetailedStatistics</a> *&#160;</td>
<td class="paramname"><em>pPoolStats</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Retrieves detailed statistics of existing <a class="el" href="struct_vma_pool.html" title="Represents custom memory pool.">VmaPool</a> object. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir"></td><td class="paramname">allocator</td><td>Allocator object. </td></tr>
<tr><td class="paramdir"></td><td class="paramname">pool</td><td>Pool object. </td></tr>
<tr><td class="paramdir">[out]</td><td class="paramname">pPoolStats</td><td>Statistics of specified pool. </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a id="ga36f3484de7aa6cd6edc4de9edfa0ff59" name="ga36f3484de7aa6cd6edc4de9edfa0ff59"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga36f3484de7aa6cd6edc4de9edfa0ff59">&#9670;&nbsp;</a></span>vmaCalculateStatistics()</h2>
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<td class="memname">void vmaCalculateStatistics </td>
<td>(</td>
<td class="paramtype"><a class="el" href="struct_vma_allocator.html">VmaAllocator</a>&#160;</td>
<td class="paramname"><em>allocator</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="struct_vma_total_statistics.html">VmaTotalStatistics</a> *&#160;</td>
<td class="paramname"><em>pStats</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Retrieves statistics from current state of the Allocator. </p>
<p >This function is called "calculate" not "get" because it has to traverse all internal data structures, so it may be quite slow. Use it for debugging purposes. For faster but more brief statistics suitable to be called every frame or every allocation, use <a class="el" href="group__group__stats.html#ga9f88db9d46a432c0ad7278cecbc5eaa7" title="Retrieves information about current memory usage and budget for all memory heaps.">vmaGetHeapBudgets()</a>.</p>
<p >Note that when using allocator from multiple threads, returned information may immediately become outdated. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ga3104eb30d8122c84dd8541063f145288">&#9670;&nbsp;</a></span>vmaFreeStatsString()</h2>
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<td class="memname">void vmaFreeStatsString </td>
<td>(</td>
<td class="paramtype"><a class="el" href="struct_vma_allocator.html">VmaAllocator</a>&#160;</td>
<td class="paramname"><em>allocator</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">char *&#160;</td>
<td class="paramname"><em>pStatsString</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
</div>
</div>
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<h2 class="memtitle"><span class="permalink"><a href="#ga47fb8d8aa69df4a7c23a9719b4080623">&#9670;&nbsp;</a></span>vmaFreeVirtualBlockStatsString()</h2>
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<td class="memname">void vmaFreeVirtualBlockStatsString </td>
<td>(</td>
<td class="paramtype"><a class="el" href="struct_vma_virtual_block.html">VmaVirtualBlock</a>&#160;</td>
<td class="paramname"><em>virtualBlock</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">char *&#160;</td>
<td class="paramname"><em>pStatsString</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Frees a string returned by <a class="el" href="group__group__stats.html#ga52d810e1222c592e5d80556ad005f1e6" title="Builds and returns a null-terminated string in JSON format with information about given VmaVirtualBlo...">vmaBuildVirtualBlockStatsString()</a>. </p>
</div>
</div>
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<h2 class="memtitle"><span class="permalink"><a href="#ga9f88db9d46a432c0ad7278cecbc5eaa7">&#9670;&nbsp;</a></span>vmaGetHeapBudgets()</h2>
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<td class="memname">void vmaGetHeapBudgets </td>
<td>(</td>
<td class="paramtype"><a class="el" href="struct_vma_allocator.html">VmaAllocator</a>&#160;</td>
<td class="paramname"><em>allocator</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="struct_vma_budget.html">VmaBudget</a> *&#160;</td>
<td class="paramname"><em>pBudgets</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Retrieves information about current memory usage and budget for all memory heaps. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir"></td><td class="paramname">allocator</td><td></td></tr>
<tr><td class="paramdir">[out]</td><td class="paramname">pBudgets</td><td>Must point to array with number of elements at least equal to number of memory heaps in physical device used.</td></tr>
</table>
</dd>
</dl>
<p>This function is called "get" not "calculate" because it is very fast, suitable to be called every frame or every allocation. For more detailed statistics use <a class="el" href="group__group__stats.html#ga36f3484de7aa6cd6edc4de9edfa0ff59" title="Retrieves statistics from current state of the Allocator.">vmaCalculateStatistics()</a>.</p>
<p >Note that when using allocator from multiple threads, returned information may immediately become outdated. </p>
</div>
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<h2 class="memtitle"><span class="permalink"><a href="#ga34d8e7d83774eed0caee5c5ae88e217d">&#9670;&nbsp;</a></span>vmaGetPoolStatistics()</h2>
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<td class="memname">void vmaGetPoolStatistics </td>
<td>(</td>
<td class="paramtype"><a class="el" href="struct_vma_allocator.html">VmaAllocator</a>&#160;</td>
<td class="paramname"><em>allocator</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="struct_vma_pool.html">VmaPool</a>&#160;</td>
<td class="paramname"><em>pool</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="struct_vma_statistics.html">VmaStatistics</a> *&#160;</td>
<td class="paramname"><em>pPoolStats</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Retrieves statistics of existing <a class="el" href="struct_vma_pool.html" title="Represents custom memory pool.">VmaPool</a> object. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir"></td><td class="paramname">allocator</td><td>Allocator object. </td></tr>
<tr><td class="paramdir"></td><td class="paramname">pool</td><td>Pool object. </td></tr>
<tr><td class="paramdir">[out]</td><td class="paramname">pPoolStats</td><td>Statistics of specified pool. </td></tr>
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<div class="headertitle"><div class="title">Virtual allocator</div></div>
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<p>API elements related to the mechanism of <a class="el" href="virtual_allocator.html">Virtual allocator</a> - using the core allocation algorithm for user-defined purpose without allocating any real GPU memory.
<a href="#details">More...</a></p>
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Classes</h2></td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_vma_virtual_block_create_info.html">VmaVirtualBlockCreateInfo</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Parameters of created <a class="el" href="struct_vma_virtual_block.html" title="Handle to a virtual block object that allows to use core allocation algorithm without allocating any ...">VmaVirtualBlock</a> object to be passed to <a class="el" href="group__group__virtual.html#gab585754076877265fdae33e5c40ef13b" title="Creates new VmaVirtualBlock object.">vmaCreateVirtualBlock()</a>. <a href="struct_vma_virtual_block_create_info.html#details">More...</a><br /></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_vma_virtual_allocation_create_info.html">VmaVirtualAllocationCreateInfo</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Parameters of created virtual allocation to be passed to <a class="el" href="group__group__virtual.html#ga6b7cdcc1c3e5103c323fedc4e1319e01" title="Allocates new virtual allocation inside given VmaVirtualBlock.">vmaVirtualAllocate()</a>. <a href="struct_vma_virtual_allocation_create_info.html#details">More...</a><br /></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_vma_virtual_allocation_info.html">VmaVirtualAllocationInfo</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Parameters of an existing virtual allocation, returned by <a class="el" href="group__group__virtual.html#ga8ee14ceb1fe033ec84d8aa29e1f75afa" title="Returns information about a specific virtual allocation within a virtual block, like its size and pUs...">vmaGetVirtualAllocationInfo()</a>. <a href="struct_vma_virtual_allocation_info.html#details">More...</a><br /></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_vma_virtual_allocation.html">VmaVirtualAllocation</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Represents single memory allocation done inside <a class="el" href="struct_vma_virtual_block.html" title="Handle to a virtual block object that allows to use core allocation algorithm without allocating any ...">VmaVirtualBlock</a>. <a href="struct_vma_virtual_allocation.html#details">More...</a><br /></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_vma_virtual_block.html">VmaVirtualBlock</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft">&#160;</td><td class="mdescRight">Handle to a virtual block object that allows to use core allocation algorithm without allocating any real GPU memory. <a href="struct_vma_virtual_block.html#details">More...</a><br /></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
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Typedefs</h2></td></tr>
<tr class="memitem:ga0860ba1c0a67178fae4aecb63a78573e"><td class="memItemLeft" align="right" valign="top">typedef enum <a class="el" href="group__group__virtual.html#ga88bcf8c1cd3bb1610ff7343811c65bca">VmaVirtualBlockCreateFlagBits</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__virtual.html#ga0860ba1c0a67178fae4aecb63a78573e">VmaVirtualBlockCreateFlagBits</a></td></tr>
<tr class="memdesc:ga0860ba1c0a67178fae4aecb63a78573e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Flags to be passed as <a class="el" href="struct_vma_virtual_block_create_info.html#aaab9bf7e2d228c02ab6d90a72a6e6912" title="Use combination of VmaVirtualBlockCreateFlagBits.">VmaVirtualBlockCreateInfo::flags</a>. <a href="group__group__virtual.html#ga0860ba1c0a67178fae4aecb63a78573e">More...</a><br /></td></tr>
<tr class="separator:ga0860ba1c0a67178fae4aecb63a78573e"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga4e49c2f0ab7f6b4868833e5bac78d91e"><td class="memItemLeft" align="right" valign="top">typedef VkFlags&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__virtual.html#ga4e49c2f0ab7f6b4868833e5bac78d91e">VmaVirtualBlockCreateFlags</a></td></tr>
<tr class="memdesc:ga4e49c2f0ab7f6b4868833e5bac78d91e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Flags to be passed as <a class="el" href="struct_vma_virtual_block_create_info.html#aaab9bf7e2d228c02ab6d90a72a6e6912" title="Use combination of VmaVirtualBlockCreateFlagBits.">VmaVirtualBlockCreateInfo::flags</a>. See <a class="el" href="group__group__virtual.html#ga88bcf8c1cd3bb1610ff7343811c65bca" title="Flags to be passed as VmaVirtualBlockCreateInfo::flags.">VmaVirtualBlockCreateFlagBits</a>. <a href="group__group__virtual.html#ga4e49c2f0ab7f6b4868833e5bac78d91e">More...</a><br /></td></tr>
<tr class="separator:ga4e49c2f0ab7f6b4868833e5bac78d91e"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga936815e64946a6b6d812d08d10184c23"><td class="memItemLeft" align="right" valign="top">typedef enum <a class="el" href="group__group__virtual.html#ga2e9c64d405b14156fea7e10c4ad06cb6">VmaVirtualAllocationCreateFlagBits</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__virtual.html#ga936815e64946a6b6d812d08d10184c23">VmaVirtualAllocationCreateFlagBits</a></td></tr>
<tr class="memdesc:ga936815e64946a6b6d812d08d10184c23"><td class="mdescLeft">&#160;</td><td class="mdescRight">Flags to be passed as <a class="el" href="struct_vma_virtual_allocation_create_info.html#ab10e16956cc4bf20ced9de77d1129ea4" title="Use combination of VmaVirtualAllocationCreateFlagBits.">VmaVirtualAllocationCreateInfo::flags</a>. <a href="group__group__virtual.html#ga936815e64946a6b6d812d08d10184c23">More...</a><br /></td></tr>
<tr class="separator:ga936815e64946a6b6d812d08d10184c23"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gae96ffc099bf898257fb19e9410ed08a7"><td class="memItemLeft" align="right" valign="top">typedef VkFlags&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__virtual.html#gae96ffc099bf898257fb19e9410ed08a7">VmaVirtualAllocationCreateFlags</a></td></tr>
<tr class="memdesc:gae96ffc099bf898257fb19e9410ed08a7"><td class="mdescLeft">&#160;</td><td class="mdescRight">Flags to be passed as <a class="el" href="struct_vma_virtual_allocation_create_info.html#ab10e16956cc4bf20ced9de77d1129ea4" title="Use combination of VmaVirtualAllocationCreateFlagBits.">VmaVirtualAllocationCreateInfo::flags</a>. See <a class="el" href="group__group__virtual.html#ga2e9c64d405b14156fea7e10c4ad06cb6" title="Flags to be passed as VmaVirtualAllocationCreateInfo::flags.">VmaVirtualAllocationCreateFlagBits</a>. <a href="group__group__virtual.html#gae96ffc099bf898257fb19e9410ed08a7">More...</a><br /></td></tr>
<tr class="separator:gae96ffc099bf898257fb19e9410ed08a7"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga4753d42d40217a3a652a3cdf253ad773"><td class="memItemLeft" align="right" valign="top">typedef struct <a class="el" href="struct_vma_virtual_block_create_info.html">VmaVirtualBlockCreateInfo</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__virtual.html#ga4753d42d40217a3a652a3cdf253ad773">VmaVirtualBlockCreateInfo</a></td></tr>
<tr class="memdesc:ga4753d42d40217a3a652a3cdf253ad773"><td class="mdescLeft">&#160;</td><td class="mdescRight">Parameters of created <a class="el" href="struct_vma_virtual_block.html" title="Handle to a virtual block object that allows to use core allocation algorithm without allocating any ...">VmaVirtualBlock</a> object to be passed to <a class="el" href="group__group__virtual.html#gab585754076877265fdae33e5c40ef13b" title="Creates new VmaVirtualBlock object.">vmaCreateVirtualBlock()</a>. <a href="group__group__virtual.html#ga4753d42d40217a3a652a3cdf253ad773">More...</a><br /></td></tr>
<tr class="separator:ga4753d42d40217a3a652a3cdf253ad773"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gac3c90d80bedc6847a41b82d0e2158c9e"><td class="memItemLeft" align="right" valign="top">typedef struct <a class="el" href="struct_vma_virtual_allocation_create_info.html">VmaVirtualAllocationCreateInfo</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__virtual.html#gac3c90d80bedc6847a41b82d0e2158c9e">VmaVirtualAllocationCreateInfo</a></td></tr>
<tr class="memdesc:gac3c90d80bedc6847a41b82d0e2158c9e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Parameters of created virtual allocation to be passed to <a class="el" href="group__group__virtual.html#ga6b7cdcc1c3e5103c323fedc4e1319e01" title="Allocates new virtual allocation inside given VmaVirtualBlock.">vmaVirtualAllocate()</a>. <a href="group__group__virtual.html#gac3c90d80bedc6847a41b82d0e2158c9e">More...</a><br /></td></tr>
<tr class="separator:gac3c90d80bedc6847a41b82d0e2158c9e"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga75bc33ff7cf18c98e101f570dc2a5ebc"><td class="memItemLeft" align="right" valign="top">typedef struct <a class="el" href="struct_vma_virtual_allocation_info.html">VmaVirtualAllocationInfo</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__virtual.html#ga75bc33ff7cf18c98e101f570dc2a5ebc">VmaVirtualAllocationInfo</a></td></tr>
<tr class="memdesc:ga75bc33ff7cf18c98e101f570dc2a5ebc"><td class="mdescLeft">&#160;</td><td class="mdescRight">Parameters of an existing virtual allocation, returned by <a class="el" href="group__group__virtual.html#ga8ee14ceb1fe033ec84d8aa29e1f75afa" title="Returns information about a specific virtual allocation within a virtual block, like its size and pUs...">vmaGetVirtualAllocationInfo()</a>. <a href="group__group__virtual.html#ga75bc33ff7cf18c98e101f570dc2a5ebc">More...</a><br /></td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="enum-members" name="enum-members"></a>
Enumerations</h2></td></tr>
<tr class="memitem:ga88bcf8c1cd3bb1610ff7343811c65bca"><td class="memItemLeft" align="right" valign="top">enum &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__virtual.html#ga88bcf8c1cd3bb1610ff7343811c65bca">VmaVirtualBlockCreateFlagBits</a> { <a class="el" href="group__group__virtual.html#gga88bcf8c1cd3bb1610ff7343811c65bcaae6423e2fa2f3c9211b21c819e3f10f96">VMA_VIRTUAL_BLOCK_CREATE_LINEAR_ALGORITHM_BIT</a> = 0x00000001
, <a class="el" href="group__group__virtual.html#gga88bcf8c1cd3bb1610ff7343811c65bcaaf9487467136e1a9e371894dc3a7c4844">VMA_VIRTUAL_BLOCK_CREATE_ALGORITHM_MASK</a>
, <a class="el" href="group__group__virtual.html#gga88bcf8c1cd3bb1610ff7343811c65bcaa5fc0d333c3d5687a8bbf57df9b377a87">VMA_VIRTUAL_BLOCK_CREATE_FLAG_BITS_MAX_ENUM</a> = 0x7FFFFFFF
}</td></tr>
<tr class="memdesc:ga88bcf8c1cd3bb1610ff7343811c65bca"><td class="mdescLeft">&#160;</td><td class="mdescRight">Flags to be passed as <a class="el" href="struct_vma_virtual_block_create_info.html#aaab9bf7e2d228c02ab6d90a72a6e6912" title="Use combination of VmaVirtualBlockCreateFlagBits.">VmaVirtualBlockCreateInfo::flags</a>. <a href="group__group__virtual.html#ga88bcf8c1cd3bb1610ff7343811c65bca">More...</a><br /></td></tr>
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<tr class="memitem:ga2e9c64d405b14156fea7e10c4ad06cb6"><td class="memItemLeft" align="right" valign="top">enum &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__virtual.html#ga2e9c64d405b14156fea7e10c4ad06cb6">VmaVirtualAllocationCreateFlagBits</a> { <br />
&#160;&#160;<a class="el" href="group__group__virtual.html#gga2e9c64d405b14156fea7e10c4ad06cb6a9524a329a55b5ec390d57d90b67ad78e">VMA_VIRTUAL_ALLOCATION_CREATE_UPPER_ADDRESS_BIT</a> = VMA_ALLOCATION_CREATE_UPPER_ADDRESS_BIT
, <a class="el" href="group__group__virtual.html#gga2e9c64d405b14156fea7e10c4ad06cb6ae2a9591a62b5e3b1bdcbc81c6188a1bf">VMA_VIRTUAL_ALLOCATION_CREATE_STRATEGY_MIN_MEMORY_BIT</a> = VMA_ALLOCATION_CREATE_STRATEGY_MIN_MEMORY_BIT
, <a class="el" href="group__group__virtual.html#gga2e9c64d405b14156fea7e10c4ad06cb6a562d10a46012719d33167d3dc5dbbf9b">VMA_VIRTUAL_ALLOCATION_CREATE_STRATEGY_MIN_TIME_BIT</a> = VMA_ALLOCATION_CREATE_STRATEGY_MIN_TIME_BIT
, <a class="el" href="group__group__virtual.html#gga2e9c64d405b14156fea7e10c4ad06cb6a3bb82d2aedd587a64846a1d7778852e6">VMA_VIRTUAL_ALLOCATION_CREATE_STRATEGY_MIN_OFFSET_BIT</a> = VMA_ALLOCATION_CREATE_STRATEGY_MIN_OFFSET_BIT
, <br />
&#160;&#160;<a class="el" href="group__group__virtual.html#gga2e9c64d405b14156fea7e10c4ad06cb6ac5b5e45c335368d18df59c9f27df17e3">VMA_VIRTUAL_ALLOCATION_CREATE_STRATEGY_MASK</a> = VMA_ALLOCATION_CREATE_STRATEGY_MASK
, <a class="el" href="group__group__virtual.html#gga2e9c64d405b14156fea7e10c4ad06cb6ac1163c03ea837fa663462dc286d6a1a9">VMA_VIRTUAL_ALLOCATION_CREATE_FLAG_BITS_MAX_ENUM</a> = 0x7FFFFFFF
<br />
}</td></tr>
<tr class="memdesc:ga2e9c64d405b14156fea7e10c4ad06cb6"><td class="mdescLeft">&#160;</td><td class="mdescRight">Flags to be passed as <a class="el" href="struct_vma_virtual_allocation_create_info.html#ab10e16956cc4bf20ced9de77d1129ea4" title="Use combination of VmaVirtualAllocationCreateFlagBits.">VmaVirtualAllocationCreateInfo::flags</a>. <a href="group__group__virtual.html#ga2e9c64d405b14156fea7e10c4ad06cb6">More...</a><br /></td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="func-members" name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:ga565936f8d98d225b536a2d9703bc7676"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__virtual.html#ga565936f8d98d225b536a2d9703bc7676">VK_DEFINE_NON_DISPATCHABLE_HANDLE</a> (<a class="el" href="struct_vma_virtual_allocation.html">VmaVirtualAllocation</a>)</td></tr>
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<tr class="memitem:gab585754076877265fdae33e5c40ef13b"><td class="memItemLeft" align="right" valign="top">VkResult&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__virtual.html#gab585754076877265fdae33e5c40ef13b">vmaCreateVirtualBlock</a> (const <a class="el" href="struct_vma_virtual_block_create_info.html">VmaVirtualBlockCreateInfo</a> *pCreateInfo, <a class="el" href="struct_vma_virtual_block.html">VmaVirtualBlock</a> *pVirtualBlock)</td></tr>
<tr class="memdesc:gab585754076877265fdae33e5c40ef13b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Creates new <a class="el" href="struct_vma_virtual_block.html" title="Handle to a virtual block object that allows to use core allocation algorithm without allocating any ...">VmaVirtualBlock</a> object. <a href="group__group__virtual.html#gab585754076877265fdae33e5c40ef13b">More...</a><br /></td></tr>
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<tr class="memitem:ga3795f7783ae2c182cede067d656f66a5"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__virtual.html#ga3795f7783ae2c182cede067d656f66a5">vmaDestroyVirtualBlock</a> (<a class="el" href="struct_vma_virtual_block.html">VmaVirtualBlock</a> virtualBlock)</td></tr>
<tr class="memdesc:ga3795f7783ae2c182cede067d656f66a5"><td class="mdescLeft">&#160;</td><td class="mdescRight">Destroys <a class="el" href="struct_vma_virtual_block.html" title="Handle to a virtual block object that allows to use core allocation algorithm without allocating any ...">VmaVirtualBlock</a> object. <a href="group__group__virtual.html#ga3795f7783ae2c182cede067d656f66a5">More...</a><br /></td></tr>
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<tr class="memitem:gacd53b5b1d23f8fcbad692ccfdc1811f1"><td class="memItemLeft" align="right" valign="top">VkBool32&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__virtual.html#gacd53b5b1d23f8fcbad692ccfdc1811f1">vmaIsVirtualBlockEmpty</a> (<a class="el" href="struct_vma_virtual_block.html">VmaVirtualBlock</a> virtualBlock)</td></tr>
<tr class="memdesc:gacd53b5b1d23f8fcbad692ccfdc1811f1"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns true of the <a class="el" href="struct_vma_virtual_block.html" title="Handle to a virtual block object that allows to use core allocation algorithm without allocating any ...">VmaVirtualBlock</a> is empty - contains 0 virtual allocations and has all its space available for new allocations. <a href="group__group__virtual.html#gacd53b5b1d23f8fcbad692ccfdc1811f1">More...</a><br /></td></tr>
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<tr class="memitem:ga8ee14ceb1fe033ec84d8aa29e1f75afa"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__virtual.html#ga8ee14ceb1fe033ec84d8aa29e1f75afa">vmaGetVirtualAllocationInfo</a> (<a class="el" href="struct_vma_virtual_block.html">VmaVirtualBlock</a> virtualBlock, <a class="el" href="struct_vma_virtual_allocation.html">VmaVirtualAllocation</a> allocation, <a class="el" href="struct_vma_virtual_allocation_info.html">VmaVirtualAllocationInfo</a> *pVirtualAllocInfo)</td></tr>
<tr class="memdesc:ga8ee14ceb1fe033ec84d8aa29e1f75afa"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns information about a specific virtual allocation within a virtual block, like its size and <code>pUserData</code> pointer. <a href="group__group__virtual.html#ga8ee14ceb1fe033ec84d8aa29e1f75afa">More...</a><br /></td></tr>
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<tr class="memitem:ga6b7cdcc1c3e5103c323fedc4e1319e01"><td class="memItemLeft" align="right" valign="top">VkResult&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__virtual.html#ga6b7cdcc1c3e5103c323fedc4e1319e01">vmaVirtualAllocate</a> (<a class="el" href="struct_vma_virtual_block.html">VmaVirtualBlock</a> virtualBlock, const <a class="el" href="struct_vma_virtual_allocation_create_info.html">VmaVirtualAllocationCreateInfo</a> *pCreateInfo, <a class="el" href="struct_vma_virtual_allocation.html">VmaVirtualAllocation</a> *pAllocation, VkDeviceSize *pOffset)</td></tr>
<tr class="memdesc:ga6b7cdcc1c3e5103c323fedc4e1319e01"><td class="mdescLeft">&#160;</td><td class="mdescRight">Allocates new virtual allocation inside given <a class="el" href="struct_vma_virtual_block.html" title="Handle to a virtual block object that allows to use core allocation algorithm without allocating any ...">VmaVirtualBlock</a>. <a href="group__group__virtual.html#ga6b7cdcc1c3e5103c323fedc4e1319e01">More...</a><br /></td></tr>
<tr class="separator:ga6b7cdcc1c3e5103c323fedc4e1319e01"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga09fc688c0c3653ff23723b037e5d5033"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__virtual.html#ga09fc688c0c3653ff23723b037e5d5033">vmaVirtualFree</a> (<a class="el" href="struct_vma_virtual_block.html">VmaVirtualBlock</a> virtualBlock, <a class="el" href="struct_vma_virtual_allocation.html">VmaVirtualAllocation</a> allocation)</td></tr>
<tr class="memdesc:ga09fc688c0c3653ff23723b037e5d5033"><td class="mdescLeft">&#160;</td><td class="mdescRight">Frees virtual allocation inside given <a class="el" href="struct_vma_virtual_block.html" title="Handle to a virtual block object that allows to use core allocation algorithm without allocating any ...">VmaVirtualBlock</a>. <a href="group__group__virtual.html#ga09fc688c0c3653ff23723b037e5d5033">More...</a><br /></td></tr>
<tr class="separator:ga09fc688c0c3653ff23723b037e5d5033"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga5eda6f55919fb05bd2f56a112590c571"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__virtual.html#ga5eda6f55919fb05bd2f56a112590c571">vmaClearVirtualBlock</a> (<a class="el" href="struct_vma_virtual_block.html">VmaVirtualBlock</a> virtualBlock)</td></tr>
<tr class="memdesc:ga5eda6f55919fb05bd2f56a112590c571"><td class="mdescLeft">&#160;</td><td class="mdescRight">Frees all virtual allocations inside given <a class="el" href="struct_vma_virtual_block.html" title="Handle to a virtual block object that allows to use core allocation algorithm without allocating any ...">VmaVirtualBlock</a>. <a href="group__group__virtual.html#ga5eda6f55919fb05bd2f56a112590c571">More...</a><br /></td></tr>
<tr class="separator:ga5eda6f55919fb05bd2f56a112590c571"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga001ea1850458a4062b829e09c303fca2"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__virtual.html#ga001ea1850458a4062b829e09c303fca2">vmaSetVirtualAllocationUserData</a> (<a class="el" href="struct_vma_virtual_block.html">VmaVirtualBlock</a> virtualBlock, <a class="el" href="struct_vma_virtual_allocation.html">VmaVirtualAllocation</a> allocation, void *pUserData)</td></tr>
<tr class="memdesc:ga001ea1850458a4062b829e09c303fca2"><td class="mdescLeft">&#160;</td><td class="mdescRight">Changes custom pointer associated with given virtual allocation. <a href="group__group__virtual.html#ga001ea1850458a4062b829e09c303fca2">More...</a><br /></td></tr>
<tr class="separator:ga001ea1850458a4062b829e09c303fca2"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga2902aa3130866afcc64bb5f984113db3"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__virtual.html#ga2902aa3130866afcc64bb5f984113db3">vmaGetVirtualBlockStatistics</a> (<a class="el" href="struct_vma_virtual_block.html">VmaVirtualBlock</a> virtualBlock, <a class="el" href="struct_vma_statistics.html">VmaStatistics</a> *pStats)</td></tr>
<tr class="memdesc:ga2902aa3130866afcc64bb5f984113db3"><td class="mdescLeft">&#160;</td><td class="mdescRight">Calculates and returns statistics about virtual allocations and memory usage in given <a class="el" href="struct_vma_virtual_block.html" title="Handle to a virtual block object that allows to use core allocation algorithm without allocating any ...">VmaVirtualBlock</a>. <a href="group__group__virtual.html#ga2902aa3130866afcc64bb5f984113db3">More...</a><br /></td></tr>
<tr class="separator:ga2902aa3130866afcc64bb5f984113db3"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga93c5741bca44b43e5b849cacbd616098"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__group__virtual.html#ga93c5741bca44b43e5b849cacbd616098">vmaCalculateVirtualBlockStatistics</a> (<a class="el" href="struct_vma_virtual_block.html">VmaVirtualBlock</a> virtualBlock, <a class="el" href="struct_vma_detailed_statistics.html">VmaDetailedStatistics</a> *pStats)</td></tr>
<tr class="memdesc:ga93c5741bca44b43e5b849cacbd616098"><td class="mdescLeft">&#160;</td><td class="mdescRight">Calculates and returns detailed statistics about virtual allocations and memory usage in given <a class="el" href="struct_vma_virtual_block.html" title="Handle to a virtual block object that allows to use core allocation algorithm without allocating any ...">VmaVirtualBlock</a>. <a href="group__group__virtual.html#ga93c5741bca44b43e5b849cacbd616098">More...</a><br /></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<p >API elements related to the mechanism of <a class="el" href="virtual_allocator.html">Virtual allocator</a> - using the core allocation algorithm for user-defined purpose without allocating any real GPU memory. </p>
<h2 class="groupheader">Typedef Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#ga936815e64946a6b6d812d08d10184c23">&#9670;&nbsp;</a></span>VmaVirtualAllocationCreateFlagBits</h2>
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<td class="memname">typedef enum <a class="el" href="group__group__virtual.html#ga2e9c64d405b14156fea7e10c4ad06cb6">VmaVirtualAllocationCreateFlagBits</a> <a class="el" href="group__group__virtual.html#ga2e9c64d405b14156fea7e10c4ad06cb6">VmaVirtualAllocationCreateFlagBits</a></td>
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<p>Flags to be passed as <a class="el" href="struct_vma_virtual_allocation_create_info.html#ab10e16956cc4bf20ced9de77d1129ea4" title="Use combination of VmaVirtualAllocationCreateFlagBits.">VmaVirtualAllocationCreateInfo::flags</a>. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#gae96ffc099bf898257fb19e9410ed08a7">&#9670;&nbsp;</a></span>VmaVirtualAllocationCreateFlags</h2>
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<td class="memname">typedef VkFlags <a class="el" href="group__group__virtual.html#gae96ffc099bf898257fb19e9410ed08a7">VmaVirtualAllocationCreateFlags</a></td>
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<p>Flags to be passed as <a class="el" href="struct_vma_virtual_allocation_create_info.html#ab10e16956cc4bf20ced9de77d1129ea4" title="Use combination of VmaVirtualAllocationCreateFlagBits.">VmaVirtualAllocationCreateInfo::flags</a>. See <a class="el" href="group__group__virtual.html#ga2e9c64d405b14156fea7e10c4ad06cb6" title="Flags to be passed as VmaVirtualAllocationCreateInfo::flags.">VmaVirtualAllocationCreateFlagBits</a>. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#gac3c90d80bedc6847a41b82d0e2158c9e">&#9670;&nbsp;</a></span>VmaVirtualAllocationCreateInfo</h2>
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<td class="memname">typedef struct <a class="el" href="struct_vma_virtual_allocation_create_info.html">VmaVirtualAllocationCreateInfo</a> <a class="el" href="struct_vma_virtual_allocation_create_info.html">VmaVirtualAllocationCreateInfo</a></td>
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<p>Parameters of created virtual allocation to be passed to <a class="el" href="group__group__virtual.html#ga6b7cdcc1c3e5103c323fedc4e1319e01" title="Allocates new virtual allocation inside given VmaVirtualBlock.">vmaVirtualAllocate()</a>. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ga75bc33ff7cf18c98e101f570dc2a5ebc">&#9670;&nbsp;</a></span>VmaVirtualAllocationInfo</h2>
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<td class="memname">typedef struct <a class="el" href="struct_vma_virtual_allocation_info.html">VmaVirtualAllocationInfo</a> <a class="el" href="struct_vma_virtual_allocation_info.html">VmaVirtualAllocationInfo</a></td>
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<p>Parameters of an existing virtual allocation, returned by <a class="el" href="group__group__virtual.html#ga8ee14ceb1fe033ec84d8aa29e1f75afa" title="Returns information about a specific virtual allocation within a virtual block, like its size and pUs...">vmaGetVirtualAllocationInfo()</a>. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ga0860ba1c0a67178fae4aecb63a78573e">&#9670;&nbsp;</a></span>VmaVirtualBlockCreateFlagBits</h2>
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<td class="memname">typedef enum <a class="el" href="group__group__virtual.html#ga88bcf8c1cd3bb1610ff7343811c65bca">VmaVirtualBlockCreateFlagBits</a> <a class="el" href="group__group__virtual.html#ga88bcf8c1cd3bb1610ff7343811c65bca">VmaVirtualBlockCreateFlagBits</a></td>
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<p>Flags to be passed as <a class="el" href="struct_vma_virtual_block_create_info.html#aaab9bf7e2d228c02ab6d90a72a6e6912" title="Use combination of VmaVirtualBlockCreateFlagBits.">VmaVirtualBlockCreateInfo::flags</a>. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ga4e49c2f0ab7f6b4868833e5bac78d91e">&#9670;&nbsp;</a></span>VmaVirtualBlockCreateFlags</h2>
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<td class="memname">typedef VkFlags <a class="el" href="group__group__virtual.html#ga4e49c2f0ab7f6b4868833e5bac78d91e">VmaVirtualBlockCreateFlags</a></td>
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<p>Flags to be passed as <a class="el" href="struct_vma_virtual_block_create_info.html#aaab9bf7e2d228c02ab6d90a72a6e6912" title="Use combination of VmaVirtualBlockCreateFlagBits.">VmaVirtualBlockCreateInfo::flags</a>. See <a class="el" href="group__group__virtual.html#ga88bcf8c1cd3bb1610ff7343811c65bca" title="Flags to be passed as VmaVirtualBlockCreateInfo::flags.">VmaVirtualBlockCreateFlagBits</a>. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ga4753d42d40217a3a652a3cdf253ad773">&#9670;&nbsp;</a></span>VmaVirtualBlockCreateInfo</h2>
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<td class="memname">typedef struct <a class="el" href="struct_vma_virtual_block_create_info.html">VmaVirtualBlockCreateInfo</a> <a class="el" href="struct_vma_virtual_block_create_info.html">VmaVirtualBlockCreateInfo</a></td>
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<p>Parameters of created <a class="el" href="struct_vma_virtual_block.html" title="Handle to a virtual block object that allows to use core allocation algorithm without allocating any ...">VmaVirtualBlock</a> object to be passed to <a class="el" href="group__group__virtual.html#gab585754076877265fdae33e5c40ef13b" title="Creates new VmaVirtualBlock object.">vmaCreateVirtualBlock()</a>. </p>
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<h2 class="groupheader">Enumeration Type Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#ga2e9c64d405b14156fea7e10c4ad06cb6">&#9670;&nbsp;</a></span>VmaVirtualAllocationCreateFlagBits</h2>
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<td class="memname">enum <a class="el" href="group__group__virtual.html#ga2e9c64d405b14156fea7e10c4ad06cb6">VmaVirtualAllocationCreateFlagBits</a></td>
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<p>Flags to be passed as <a class="el" href="struct_vma_virtual_allocation_create_info.html#ab10e16956cc4bf20ced9de77d1129ea4" title="Use combination of VmaVirtualAllocationCreateFlagBits.">VmaVirtualAllocationCreateInfo::flags</a>. </p>
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<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><a id="gga2e9c64d405b14156fea7e10c4ad06cb6a9524a329a55b5ec390d57d90b67ad78e" name="gga2e9c64d405b14156fea7e10c4ad06cb6a9524a329a55b5ec390d57d90b67ad78e"></a>VMA_VIRTUAL_ALLOCATION_CREATE_UPPER_ADDRESS_BIT&#160;</td><td class="fielddoc"><p >Allocation will be created from upper stack in a double stack pool. </p>
<p >This flag is only allowed for virtual blocks created with <a class="el" href="group__group__virtual.html#gga88bcf8c1cd3bb1610ff7343811c65bcaae6423e2fa2f3c9211b21c819e3f10f96" title="Enables alternative, linear allocation algorithm in this virtual block.">VMA_VIRTUAL_BLOCK_CREATE_LINEAR_ALGORITHM_BIT</a> flag. </p>
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<tr><td class="fieldname"><a id="gga2e9c64d405b14156fea7e10c4ad06cb6ae2a9591a62b5e3b1bdcbc81c6188a1bf" name="gga2e9c64d405b14156fea7e10c4ad06cb6ae2a9591a62b5e3b1bdcbc81c6188a1bf"></a>VMA_VIRTUAL_ALLOCATION_CREATE_STRATEGY_MIN_MEMORY_BIT&#160;</td><td class="fielddoc"><p >Allocation strategy that tries to minimize memory usage. </p>
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<tr><td class="fieldname"><a id="gga2e9c64d405b14156fea7e10c4ad06cb6a562d10a46012719d33167d3dc5dbbf9b" name="gga2e9c64d405b14156fea7e10c4ad06cb6a562d10a46012719d33167d3dc5dbbf9b"></a>VMA_VIRTUAL_ALLOCATION_CREATE_STRATEGY_MIN_TIME_BIT&#160;</td><td class="fielddoc"><p >Allocation strategy that tries to minimize allocation time. </p>
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<tr><td class="fieldname"><a id="gga2e9c64d405b14156fea7e10c4ad06cb6a3bb82d2aedd587a64846a1d7778852e6" name="gga2e9c64d405b14156fea7e10c4ad06cb6a3bb82d2aedd587a64846a1d7778852e6"></a>VMA_VIRTUAL_ALLOCATION_CREATE_STRATEGY_MIN_OFFSET_BIT&#160;</td><td class="fielddoc"><p >Allocation strategy that chooses always the lowest offset in available space. This is not the most efficient strategy but achieves highly packed data. </p>
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<tr><td class="fieldname"><a id="gga2e9c64d405b14156fea7e10c4ad06cb6ac5b5e45c335368d18df59c9f27df17e3" name="gga2e9c64d405b14156fea7e10c4ad06cb6ac5b5e45c335368d18df59c9f27df17e3"></a>VMA_VIRTUAL_ALLOCATION_CREATE_STRATEGY_MASK&#160;</td><td class="fielddoc"><p >A bit mask to extract only <code>STRATEGY</code> bits from entire set of flags. </p>
<p >These strategy flags are binary compatible with equivalent flags in <a class="el" href="group__group__alloc.html#gad9889c10c798b040d59c92f257cae597" title="Flags to be passed as VmaAllocationCreateInfo::flags.">VmaAllocationCreateFlagBits</a>. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ga88bcf8c1cd3bb1610ff7343811c65bca">&#9670;&nbsp;</a></span>VmaVirtualBlockCreateFlagBits</h2>
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<td class="memname">enum <a class="el" href="group__group__virtual.html#ga88bcf8c1cd3bb1610ff7343811c65bca">VmaVirtualBlockCreateFlagBits</a></td>
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<p>Flags to be passed as <a class="el" href="struct_vma_virtual_block_create_info.html#aaab9bf7e2d228c02ab6d90a72a6e6912" title="Use combination of VmaVirtualBlockCreateFlagBits.">VmaVirtualBlockCreateInfo::flags</a>. </p>
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<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><a id="gga88bcf8c1cd3bb1610ff7343811c65bcaae6423e2fa2f3c9211b21c819e3f10f96" name="gga88bcf8c1cd3bb1610ff7343811c65bcaae6423e2fa2f3c9211b21c819e3f10f96"></a>VMA_VIRTUAL_BLOCK_CREATE_LINEAR_ALGORITHM_BIT&#160;</td><td class="fielddoc"><p >Enables alternative, linear allocation algorithm in this virtual block. </p>
<p >Specify this flag to enable linear allocation algorithm, which always creates new allocations after last one and doesn't reuse space from allocations freed in between. It trades memory consumption for simplified algorithm and data structure, which has better performance and uses less memory for metadata.</p>
<p >By using this flag, you can achieve behavior of free-at-once, stack, ring buffer, and double stack. For details, see documentation chapter <a class="el" href="custom_memory_pools.html#linear_algorithm">Linear allocation algorithm</a>. </p>
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<tr><td class="fieldname"><a id="gga88bcf8c1cd3bb1610ff7343811c65bcaaf9487467136e1a9e371894dc3a7c4844" name="gga88bcf8c1cd3bb1610ff7343811c65bcaaf9487467136e1a9e371894dc3a7c4844"></a>VMA_VIRTUAL_BLOCK_CREATE_ALGORITHM_MASK&#160;</td><td class="fielddoc"><p >Bit mask to extract only <code>ALGORITHM</code> bits from entire set of flags. </p>
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<h2 class="groupheader">Function Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#ga565936f8d98d225b536a2d9703bc7676">&#9670;&nbsp;</a></span>VK_DEFINE_NON_DISPATCHABLE_HANDLE()</h2>
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<td class="memname">VK_DEFINE_NON_DISPATCHABLE_HANDLE </td>
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<h2 class="memtitle"><span class="permalink"><a href="#ga93c5741bca44b43e5b849cacbd616098">&#9670;&nbsp;</a></span>vmaCalculateVirtualBlockStatistics()</h2>
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<td class="memname">void vmaCalculateVirtualBlockStatistics </td>
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<td class="paramtype"><a class="el" href="struct_vma_virtual_block.html">VmaVirtualBlock</a>&#160;</td>
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<p>Calculates and returns detailed statistics about virtual allocations and memory usage in given <a class="el" href="struct_vma_virtual_block.html" title="Handle to a virtual block object that allows to use core allocation algorithm without allocating any ...">VmaVirtualBlock</a>. </p>
<p >This function is slow to call. Use for debugging purposes. For less detailed statistics, see <a class="el" href="group__group__virtual.html#ga2902aa3130866afcc64bb5f984113db3" title="Calculates and returns statistics about virtual allocations and memory usage in given VmaVirtualBlock...">vmaGetVirtualBlockStatistics()</a>. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ga5eda6f55919fb05bd2f56a112590c571">&#9670;&nbsp;</a></span>vmaClearVirtualBlock()</h2>
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<td class="memname">void vmaClearVirtualBlock </td>
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<p>Frees all virtual allocations inside given <a class="el" href="struct_vma_virtual_block.html" title="Handle to a virtual block object that allows to use core allocation algorithm without allocating any ...">VmaVirtualBlock</a>. </p>
<p >You must either call this function or free each virtual allocation individually with <a class="el" href="group__group__virtual.html#ga09fc688c0c3653ff23723b037e5d5033" title="Frees virtual allocation inside given VmaVirtualBlock.">vmaVirtualFree()</a> before destroying a virtual block. Otherwise, an assert is called.</p>
<p >If you keep pointer to some additional metadata associated with your virtual allocation in its <code>pUserData</code>, don't forget to free it as well. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#gab585754076877265fdae33e5c40ef13b">&#9670;&nbsp;</a></span>vmaCreateVirtualBlock()</h2>
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<td class="memname">VkResult vmaCreateVirtualBlock </td>
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<p>Creates new <a class="el" href="struct_vma_virtual_block.html" title="Handle to a virtual block object that allows to use core allocation algorithm without allocating any ...">VmaVirtualBlock</a> object. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ga3795f7783ae2c182cede067d656f66a5">&#9670;&nbsp;</a></span>vmaDestroyVirtualBlock()</h2>
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<td class="memname">void vmaDestroyVirtualBlock </td>
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<p>Destroys <a class="el" href="struct_vma_virtual_block.html" title="Handle to a virtual block object that allows to use core allocation algorithm without allocating any ...">VmaVirtualBlock</a> object. </p>
<p >Please note that you should consciously handle virtual allocations that could remain unfreed in the block. You should either free them individually using <a class="el" href="group__group__virtual.html#ga09fc688c0c3653ff23723b037e5d5033" title="Frees virtual allocation inside given VmaVirtualBlock.">vmaVirtualFree()</a> or call <a class="el" href="group__group__virtual.html#ga5eda6f55919fb05bd2f56a112590c571" title="Frees all virtual allocations inside given VmaVirtualBlock.">vmaClearVirtualBlock()</a> if you are sure this is what you want. If you do neither, an assert is called.</p>
<p >If you keep pointers to some additional metadata associated with your virtual allocations in their <code>pUserData</code>, don't forget to free them. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ga8ee14ceb1fe033ec84d8aa29e1f75afa">&#9670;&nbsp;</a></span>vmaGetVirtualAllocationInfo()</h2>
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<td class="memname">void vmaGetVirtualAllocationInfo </td>
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<p>Returns information about a specific virtual allocation within a virtual block, like its size and <code>pUserData</code> pointer. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ga2902aa3130866afcc64bb5f984113db3">&#9670;&nbsp;</a></span>vmaGetVirtualBlockStatistics()</h2>
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<td class="memname">void vmaGetVirtualBlockStatistics </td>
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<p>Calculates and returns statistics about virtual allocations and memory usage in given <a class="el" href="struct_vma_virtual_block.html" title="Handle to a virtual block object that allows to use core allocation algorithm without allocating any ...">VmaVirtualBlock</a>. </p>
<p >This function is fast to call. For more detailed statistics, see <a class="el" href="group__group__virtual.html#ga93c5741bca44b43e5b849cacbd616098" title="Calculates and returns detailed statistics about virtual allocations and memory usage in given VmaVir...">vmaCalculateVirtualBlockStatistics()</a>. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#gacd53b5b1d23f8fcbad692ccfdc1811f1">&#9670;&nbsp;</a></span>vmaIsVirtualBlockEmpty()</h2>
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<td class="memname">VkBool32 vmaIsVirtualBlockEmpty </td>
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<p>Returns true of the <a class="el" href="struct_vma_virtual_block.html" title="Handle to a virtual block object that allows to use core allocation algorithm without allocating any ...">VmaVirtualBlock</a> is empty - contains 0 virtual allocations and has all its space available for new allocations. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ga001ea1850458a4062b829e09c303fca2">&#9670;&nbsp;</a></span>vmaSetVirtualAllocationUserData()</h2>
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<td class="memname">void vmaSetVirtualAllocationUserData </td>
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<p>Changes custom pointer associated with given virtual allocation. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ga6b7cdcc1c3e5103c323fedc4e1319e01">&#9670;&nbsp;</a></span>vmaVirtualAllocate()</h2>
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<td class="paramtype">const <a class="el" href="struct_vma_virtual_allocation_create_info.html">VmaVirtualAllocationCreateInfo</a> *&#160;</td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="struct_vma_virtual_allocation.html">VmaVirtualAllocation</a> *&#160;</td>
<td class="paramname"><em>pAllocation</em>, </td>
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<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">VkDeviceSize *&#160;</td>
<td class="paramname"><em>pOffset</em>&#160;</td>
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<td></td>
<td>)</td>
<td></td><td></td>
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<p>Allocates new virtual allocation inside given <a class="el" href="struct_vma_virtual_block.html" title="Handle to a virtual block object that allows to use core allocation algorithm without allocating any ...">VmaVirtualBlock</a>. </p>
<p >If the allocation fails due to not enough free space available, <code>VK_ERROR_OUT_OF_DEVICE_MEMORY</code> is returned (despite the function doesn't ever allocate actual GPU memory). <code>pAllocation</code> is then set to <code>VK_NULL_HANDLE</code> and <code>pOffset</code>, if not null, it set to <code>UINT64_MAX</code>.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramdir"></td><td class="paramname">virtualBlock</td><td>Virtual block </td></tr>
<tr><td class="paramdir"></td><td class="paramname">pCreateInfo</td><td>Parameters for the allocation </td></tr>
<tr><td class="paramdir">[out]</td><td class="paramname">pAllocation</td><td>Returned handle of the new allocation </td></tr>
<tr><td class="paramdir">[out]</td><td class="paramname">pOffset</td><td>Returned offset of the new allocation. Optional, can be null. </td></tr>
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</dd>
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<h2 class="memtitle"><span class="permalink"><a href="#ga09fc688c0c3653ff23723b037e5d5033">&#9670;&nbsp;</a></span>vmaVirtualFree()</h2>
<div class="memitem">
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<td class="memname">void vmaVirtualFree </td>
<td>(</td>
<td class="paramtype"><a class="el" href="struct_vma_virtual_block.html">VmaVirtualBlock</a>&#160;</td>
<td class="paramname"><em>virtualBlock</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="struct_vma_virtual_allocation.html">VmaVirtualAllocation</a>&#160;</td>
<td class="paramname"><em>allocation</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Frees virtual allocation inside given <a class="el" href="struct_vma_virtual_block.html" title="Handle to a virtual block object that allows to use core allocation algorithm without allocating any ...">VmaVirtualBlock</a>. </p>
<p >It is correct to call this function with <code>allocation == VK_NULL_HANDLE</code> - it does nothing. </p>
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<div class="headertitle"><div class="title">Vulkan Memory Allocator </div></div>
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<div class="textblock"><p ><b>Version 3.0.1 (2022-05-26)</b></p>
<p >Copyright (c) 2017-2022 Advanced Micro Devices, Inc. All rights reserved. <br />
License: MIT</p>
<p ><b>API documentation divided into groups:</b> <a href="modules.html">Modules</a></p>
<h1><a class="anchor" id="main_table_of_contents"></a>
Table of contents</h1>
<ul>
<li><b>User guide</b><ul>
<li><a class="el" href="quick_start.html">Quick start</a><ul>
<li><a class="el" href="quick_start.html#quick_start_project_setup">Project setup</a></li>
<li><a class="el" href="quick_start.html#quick_start_initialization">Initialization</a></li>
<li><a class="el" href="quick_start.html#quick_start_resource_allocation">Resource allocation</a></li>
</ul>
</li>
<li><a class="el" href="choosing_memory_type.html">Choosing memory type</a><ul>
<li><a class="el" href="choosing_memory_type.html#choosing_memory_type_usage">Usage</a></li>
<li><a class="el" href="choosing_memory_type.html#choosing_memory_type_required_preferred_flags">Required and preferred flags</a></li>
<li><a class="el" href="choosing_memory_type.html#choosing_memory_type_explicit_memory_types">Explicit memory types</a></li>
<li><a class="el" href="choosing_memory_type.html#choosing_memory_type_custom_memory_pools">Custom memory pools</a></li>
<li><a class="el" href="choosing_memory_type.html#choosing_memory_type_dedicated_allocations">Dedicated allocations</a></li>
</ul>
</li>
<li><a class="el" href="memory_mapping.html">Memory mapping</a><ul>
<li><a class="el" href="memory_mapping.html#memory_mapping_mapping_functions">Mapping functions</a></li>
<li><a class="el" href="memory_mapping.html#memory_mapping_persistently_mapped_memory">Persistently mapped memory</a></li>
<li><a class="el" href="memory_mapping.html#memory_mapping_cache_control">Cache flush and invalidate</a></li>
</ul>
</li>
<li><a class="el" href="staying_within_budget.html">Staying within budget</a><ul>
<li><a class="el" href="staying_within_budget.html#staying_within_budget_querying_for_budget">Querying for budget</a></li>
<li><a class="el" href="staying_within_budget.html#staying_within_budget_controlling_memory_usage">Controlling memory usage</a></li>
</ul>
</li>
<li><a class="el" href="resource_aliasing.html">Resource aliasing (overlap)</a></li>
<li><a class="el" href="custom_memory_pools.html">Custom memory pools</a><ul>
<li><a class="el" href="custom_memory_pools.html#custom_memory_pools_MemTypeIndex">Choosing memory type index</a></li>
<li><a class="el" href="custom_memory_pools.html#linear_algorithm">Linear allocation algorithm</a><ul>
<li><a class="el" href="custom_memory_pools.html#linear_algorithm_free_at_once">Free-at-once</a></li>
<li><a class="el" href="custom_memory_pools.html#linear_algorithm_stack">Stack</a></li>
<li><a class="el" href="custom_memory_pools.html#linear_algorithm_double_stack">Double stack</a></li>
<li><a class="el" href="custom_memory_pools.html#linear_algorithm_ring_buffer">Ring buffer</a></li>
</ul>
</li>
</ul>
</li>
<li><a class="el" href="defragmentation.html">Defragmentation</a></li>
<li><a class="el" href="statistics.html">Statistics</a><ul>
<li><a class="el" href="statistics.html#statistics_numeric_statistics">Numeric statistics</a></li>
<li><a class="el" href="statistics.html#statistics_json_dump">JSON dump</a></li>
</ul>
</li>
<li><a class="el" href="allocation_annotation.html">Allocation names and user data</a><ul>
<li><a class="el" href="allocation_annotation.html#allocation_user_data">Allocation user data</a></li>
<li><a class="el" href="allocation_annotation.html#allocation_names">Allocation names</a></li>
</ul>
</li>
<li><a class="el" href="virtual_allocator.html">Virtual allocator</a></li>
<li><a class="el" href="debugging_memory_usage.html">Debugging incorrect memory usage</a><ul>
<li><a class="el" href="debugging_memory_usage.html#debugging_memory_usage_initialization">Memory initialization</a></li>
<li><a class="el" href="debugging_memory_usage.html#debugging_memory_usage_margins">Margins</a></li>
<li><a class="el" href="debugging_memory_usage.html#debugging_memory_usage_corruption_detection">Corruption detection</a></li>
</ul>
</li>
<li><a class="el" href="opengl_interop.html">OpenGL Interop</a></li>
</ul>
</li>
<li><a class="el" href="usage_patterns.html">Recommended usage patterns</a><ul>
<li><a class="el" href="usage_patterns.html#usage_patterns_gpu_only">GPU-only resource</a></li>
<li><a class="el" href="usage_patterns.html#usage_patterns_staging_copy_upload">Staging copy for upload</a></li>
<li><a class="el" href="usage_patterns.html#usage_patterns_readback">Readback</a></li>
<li><a class="el" href="usage_patterns.html#usage_patterns_advanced_data_uploading">Advanced data uploading</a></li>
<li><a class="el" href="usage_patterns.html#usage_patterns_other_use_cases">Other use cases</a></li>
</ul>
</li>
<li><a class="el" href="configuration.html">Configuration</a><ul>
<li><a class="el" href="configuration.html#config_Vulkan_functions">Pointers to Vulkan functions</a></li>
<li><a class="el" href="configuration.html#custom_memory_allocator">Custom host memory allocator</a></li>
<li><a class="el" href="configuration.html#allocation_callbacks">Device memory allocation callbacks</a></li>
<li><a class="el" href="configuration.html#heap_memory_limit">Device heap memory limit</a></li>
</ul>
</li>
<li><b>Extension support</b><ul>
<li><a class="el" href="vk_khr_dedicated_allocation.html">VK_KHR_dedicated_allocation</a></li>
<li><a class="el" href="enabling_buffer_device_address.html">Enabling buffer device address</a></li>
<li><a class="el" href="vk_ext_memory_priority.html">VK_EXT_memory_priority</a></li>
<li><a class="el" href="vk_amd_device_coherent_memory.html">VK_AMD_device_coherent_memory</a></li>
</ul>
</li>
<li><a class="el" href="general_considerations.html">General considerations</a><ul>
<li><a class="el" href="general_considerations.html#general_considerations_thread_safety">Thread safety</a></li>
<li><a class="el" href="general_considerations.html#general_considerations_versioning_and_compatibility">Versioning and compatibility</a></li>
<li><a class="el" href="general_considerations.html#general_considerations_validation_layer_warnings">Validation layer warnings</a></li>
<li><a class="el" href="general_considerations.html#general_considerations_allocation_algorithm">Allocation algorithm</a></li>
<li><a class="el" href="general_considerations.html#general_considerations_features_not_supported">Features not supported</a></li>
</ul>
</li>
</ul>
<h1><a class="anchor" id="main_see_also"></a>
See also</h1>
<ul>
<li><a href="https://gpuopen.com/gaming-product/vulkan-memory-allocator/"><b>Product page on GPUOpen</b></a></li>
<li><a href="https://github.com/GPUOpen-LibrariesAndSDKs/VulkanMemoryAllocator"><b>Source repository on GitHub</b></a> </li>
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<div class="headertitle"><div class="title">Memory mapping </div></div>
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<div class="textblock"><p >To "map memory" in Vulkan means to obtain a CPU pointer to <code>VkDeviceMemory</code>, to be able to read from it or write to it in CPU code. Mapping is possible only of memory allocated from a memory type that has <code>VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT</code> flag. Functions <code>vkMapMemory()</code>, <code>vkUnmapMemory()</code> are designed for this purpose. You can use them directly with memory allocated by this library, but it is not recommended because of following issue: Mapping the same <code>VkDeviceMemory</code> block multiple times is illegal - only one mapping at a time is allowed. This includes mapping disjoint regions. Mapping is not reference-counted internally by Vulkan. Because of this, Vulkan Memory Allocator provides following facilities:</p>
<dl class="section note"><dt>Note</dt><dd>If you want to be able to map an allocation, you need to specify one of the flags <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a9be224df3bfc1cfa06203aed689a30c5">VMA_ALLOCATION_CREATE_HOST_ACCESS_SEQUENTIAL_WRITE_BIT</a> or <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597add61238d98e20917b9a06c617763f492">VMA_ALLOCATION_CREATE_HOST_ACCESS_RANDOM_BIT</a> in <a class="el" href="struct_vma_allocation_create_info.html#add09658ac14fe290ace25470ddd6d41b" title="Use VmaAllocationCreateFlagBits enum.">VmaAllocationCreateInfo::flags</a>. These flags are required for an allocation to be mappable when using <a class="el" href="group__group__alloc.html#ggaa5846affa1e9da3800e3e78fae2305cca27cde9026a84d34d525777baa41fce6e">VMA_MEMORY_USAGE_AUTO</a> or other <code>VMA_MEMORY_USAGE_AUTO*</code> enum values. For other usage values they are ignored and every such allocation made in <code>HOST_VISIBLE</code> memory type is mappable, but they can still be used for consistency.</dd></dl>
<h1><a class="anchor" id="memory_mapping_mapping_functions"></a>
Mapping functions</h1>
<p >The library provides following functions for mapping of a specific <a class="el" href="struct_vma_allocation.html" title="Represents single memory allocation.">VmaAllocation</a>: <a class="el" href="group__group__alloc.html#gad5bd1243512d099706de88168992f069" title="Maps memory represented by given allocation and returns pointer to it.">vmaMapMemory()</a>, <a class="el" href="group__group__alloc.html#ga9bc268595cb33f6ec4d519cfce81ff45" title="Unmaps memory represented by given allocation, mapped previously using vmaMapMemory().">vmaUnmapMemory()</a>. They are safer and more convenient to use than standard Vulkan functions. You can map an allocation multiple times simultaneously - mapping is reference-counted internally. You can also map different allocations simultaneously regardless of whether they use the same <code>VkDeviceMemory</code> block. The way it is implemented is that the library always maps entire memory block, not just region of the allocation. For further details, see description of <a class="el" href="group__group__alloc.html#gad5bd1243512d099706de88168992f069" title="Maps memory represented by given allocation and returns pointer to it.">vmaMapMemory()</a> function. Example:</p>
<div class="fragment"><div class="line"><span class="comment">// Having these objects initialized:</span></div>
<div class="line"><span class="keyword">struct </span>ConstantBuffer</div>
<div class="line">{</div>
<div class="line"> ...</div>
<div class="line">};</div>
<div class="line">ConstantBuffer constantBufferData = ...</div>
<div class="line"> </div>
<div class="line">VmaAllocator allocator = ...</div>
<div class="line">VkBuffer constantBuffer = ...</div>
<div class="line">VmaAllocation constantBufferAllocation = ...</div>
<div class="line"> </div>
<div class="line"><span class="comment">// You can map and fill your buffer using following code:</span></div>
<div class="line"> </div>
<div class="line">void* mappedData;</div>
<div class="line"><a class="code hl_function" href="group__group__alloc.html#gad5bd1243512d099706de88168992f069">vmaMapMemory</a>(allocator, constantBufferAllocation, &amp;mappedData);</div>
<div class="line">memcpy(mappedData, &amp;constantBufferData, <span class="keyword">sizeof</span>(constantBufferData));</div>
<div class="line"><a class="code hl_function" href="group__group__alloc.html#ga9bc268595cb33f6ec4d519cfce81ff45">vmaUnmapMemory</a>(allocator, constantBufferAllocation);</div>
<div class="ttc" id="agroup__group__alloc_html_ga9bc268595cb33f6ec4d519cfce81ff45"><div class="ttname"><a href="group__group__alloc.html#ga9bc268595cb33f6ec4d519cfce81ff45">vmaUnmapMemory</a></div><div class="ttdeci">void vmaUnmapMemory(VmaAllocator allocator, VmaAllocation allocation)</div><div class="ttdoc">Unmaps memory represented by given allocation, mapped previously using vmaMapMemory().</div></div>
<div class="ttc" id="agroup__group__alloc_html_gad5bd1243512d099706de88168992f069"><div class="ttname"><a href="group__group__alloc.html#gad5bd1243512d099706de88168992f069">vmaMapMemory</a></div><div class="ttdeci">VkResult vmaMapMemory(VmaAllocator allocator, VmaAllocation allocation, void **ppData)</div><div class="ttdoc">Maps memory represented by given allocation and returns pointer to it.</div></div>
</div><!-- fragment --><p >When mapping, you may see a warning from Vulkan validation layer similar to this one:</p>
<p ><em>Mapping an image with layout VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL can result in undefined behavior if this memory is used by the device. Only GENERAL or PREINITIALIZED should be used.</em></p>
<p >It happens because the library maps entire <code>VkDeviceMemory</code> block, where different types of images and buffers may end up together, especially on GPUs with unified memory like Intel. You can safely ignore it if you are sure you access only memory of the intended object that you wanted to map.</p>
<h1><a class="anchor" id="memory_mapping_persistently_mapped_memory"></a>
Persistently mapped memory</h1>
<p >Kepping your memory persistently mapped is generally OK in Vulkan. You don't need to unmap it before using its data on the GPU. The library provides a special feature designed for that: Allocations made with <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a11da372cc3a82931c5e5d6146cd9dd1f" title="Set this flag to use a memory that will be persistently mapped and retrieve pointer to it.">VMA_ALLOCATION_CREATE_MAPPED_BIT</a> flag set in <a class="el" href="struct_vma_allocation_create_info.html#add09658ac14fe290ace25470ddd6d41b" title="Use VmaAllocationCreateFlagBits enum.">VmaAllocationCreateInfo::flags</a> stay mapped all the time, so you can just access CPU pointer to it any time without a need to call any "map" or "unmap" function. Example:</p>
<div class="fragment"><div class="line">VkBufferCreateInfo bufCreateInfo = { VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO };</div>
<div class="line">bufCreateInfo.size = <span class="keyword">sizeof</span>(ConstantBuffer);</div>
<div class="line">bufCreateInfo.usage = VK_BUFFER_USAGE_TRANSFER_SRC_BIT;</div>
<div class="line"> </div>
<div class="line"><a class="code hl_struct" href="struct_vma_allocation_create_info.html">VmaAllocationCreateInfo</a> allocCreateInfo = {};</div>
<div class="line">allocCreateInfo.<a class="code hl_variable" href="struct_vma_allocation_create_info.html#accb8b06b1f677d858cb9af20705fa910">usage</a> = <a class="code hl_enumvalue" href="group__group__alloc.html#ggaa5846affa1e9da3800e3e78fae2305cca27cde9026a84d34d525777baa41fce6e">VMA_MEMORY_USAGE_AUTO</a>;</div>
<div class="line">allocCreateInfo.<a class="code hl_variable" href="struct_vma_allocation_create_info.html#add09658ac14fe290ace25470ddd6d41b">flags</a> = <a class="code hl_enumvalue" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a9be224df3bfc1cfa06203aed689a30c5">VMA_ALLOCATION_CREATE_HOST_ACCESS_SEQUENTIAL_WRITE_BIT</a> |</div>
<div class="line"> <a class="code hl_enumvalue" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a11da372cc3a82931c5e5d6146cd9dd1f">VMA_ALLOCATION_CREATE_MAPPED_BIT</a>;</div>
<div class="line"> </div>
<div class="line">VkBuffer buf;</div>
<div class="line"><a class="code hl_struct" href="struct_vma_allocation.html">VmaAllocation</a> alloc;</div>
<div class="line"><a class="code hl_struct" href="struct_vma_allocation_info.html">VmaAllocationInfo</a> allocInfo;</div>
<div class="line"><a class="code hl_function" href="group__group__alloc.html#gac72ee55598617e8eecca384e746bab51">vmaCreateBuffer</a>(allocator, &amp;bufCreateInfo, &amp;allocCreateInfo, &amp;buf, &amp;alloc, &amp;allocInfo);</div>
<div class="line"> </div>
<div class="line"><span class="comment">// Buffer is already mapped. You can access its memory.</span></div>
<div class="line">memcpy(allocInfo.<a class="code hl_variable" href="struct_vma_allocation_info.html#a5eeffbe2d2f30f53370ff14aefbadbe2">pMappedData</a>, &amp;constantBufferData, <span class="keyword">sizeof</span>(constantBufferData));</div>
<div class="ttc" id="agroup__group__alloc_html_gac72ee55598617e8eecca384e746bab51"><div class="ttname"><a href="group__group__alloc.html#gac72ee55598617e8eecca384e746bab51">vmaCreateBuffer</a></div><div class="ttdeci">VkResult vmaCreateBuffer(VmaAllocator allocator, const VkBufferCreateInfo *pBufferCreateInfo, const VmaAllocationCreateInfo *pAllocationCreateInfo, VkBuffer *pBuffer, VmaAllocation *pAllocation, VmaAllocationInfo *pAllocationInfo)</div><div class="ttdoc">Creates a new VkBuffer, allocates and binds memory for it.</div></div>
<div class="ttc" id="agroup__group__alloc_html_ggaa5846affa1e9da3800e3e78fae2305cca27cde9026a84d34d525777baa41fce6e"><div class="ttname"><a href="group__group__alloc.html#ggaa5846affa1e9da3800e3e78fae2305cca27cde9026a84d34d525777baa41fce6e">VMA_MEMORY_USAGE_AUTO</a></div><div class="ttdeci">@ VMA_MEMORY_USAGE_AUTO</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:492</div></div>
<div class="ttc" id="agroup__group__alloc_html_ggad9889c10c798b040d59c92f257cae597a11da372cc3a82931c5e5d6146cd9dd1f"><div class="ttname"><a href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a11da372cc3a82931c5e5d6146cd9dd1f">VMA_ALLOCATION_CREATE_MAPPED_BIT</a></div><div class="ttdeci">@ VMA_ALLOCATION_CREATE_MAPPED_BIT</div><div class="ttdoc">Set this flag to use a memory that will be persistently mapped and retrieve pointer to it.</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:549</div></div>
<div class="ttc" id="agroup__group__alloc_html_ggad9889c10c798b040d59c92f257cae597a9be224df3bfc1cfa06203aed689a30c5"><div class="ttname"><a href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a9be224df3bfc1cfa06203aed689a30c5">VMA_ALLOCATION_CREATE_HOST_ACCESS_SEQUENTIAL_WRITE_BIT</a></div><div class="ttdeci">@ VMA_ALLOCATION_CREATE_HOST_ACCESS_SEQUENTIAL_WRITE_BIT</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:598</div></div>
<div class="ttc" id="astruct_vma_allocation_create_info_html"><div class="ttname"><a href="struct_vma_allocation_create_info.html">VmaAllocationCreateInfo</a></div><div class="ttdoc">Parameters of new VmaAllocation.</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:1222</div></div>
<div class="ttc" id="astruct_vma_allocation_create_info_html_accb8b06b1f677d858cb9af20705fa910"><div class="ttname"><a href="struct_vma_allocation_create_info.html#accb8b06b1f677d858cb9af20705fa910">VmaAllocationCreateInfo::usage</a></div><div class="ttdeci">VmaMemoryUsage usage</div><div class="ttdoc">Intended usage of memory.</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:1230</div></div>
<div class="ttc" id="astruct_vma_allocation_create_info_html_add09658ac14fe290ace25470ddd6d41b"><div class="ttname"><a href="struct_vma_allocation_create_info.html#add09658ac14fe290ace25470ddd6d41b">VmaAllocationCreateInfo::flags</a></div><div class="ttdeci">VmaAllocationCreateFlags flags</div><div class="ttdoc">Use VmaAllocationCreateFlagBits enum.</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:1224</div></div>
<div class="ttc" id="astruct_vma_allocation_html"><div class="ttname"><a href="struct_vma_allocation.html">VmaAllocation</a></div><div class="ttdoc">Represents single memory allocation.</div></div>
<div class="ttc" id="astruct_vma_allocation_info_html"><div class="ttname"><a href="struct_vma_allocation_info.html">VmaAllocationInfo</a></div><div class="ttdoc">Parameters of VmaAllocation objects, that can be retrieved using function vmaGetAllocationInfo().</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:1337</div></div>
<div class="ttc" id="astruct_vma_allocation_info_html_a5eeffbe2d2f30f53370ff14aefbadbe2"><div class="ttname"><a href="struct_vma_allocation_info.html#a5eeffbe2d2f30f53370ff14aefbadbe2">VmaAllocationInfo::pMappedData</a></div><div class="ttdeci">void * pMappedData</div><div class="ttdoc">Pointer to the beginning of this allocation as mapped data.</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:1379</div></div>
</div><!-- fragment --><dl class="section note"><dt>Note</dt><dd><a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a11da372cc3a82931c5e5d6146cd9dd1f" title="Set this flag to use a memory that will be persistently mapped and retrieve pointer to it.">VMA_ALLOCATION_CREATE_MAPPED_BIT</a> by itself doesn't guarantee that the allocation will end up in a mappable memory type. For this, you need to also specify <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a9be224df3bfc1cfa06203aed689a30c5">VMA_ALLOCATION_CREATE_HOST_ACCESS_SEQUENTIAL_WRITE_BIT</a> or <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597add61238d98e20917b9a06c617763f492">VMA_ALLOCATION_CREATE_HOST_ACCESS_RANDOM_BIT</a>. <a class="el" href="group__group__alloc.html#ggad9889c10c798b040d59c92f257cae597a11da372cc3a82931c5e5d6146cd9dd1f" title="Set this flag to use a memory that will be persistently mapped and retrieve pointer to it.">VMA_ALLOCATION_CREATE_MAPPED_BIT</a> only guarantees that if the memory is <code>HOST_VISIBLE</code>, the allocation will be mapped on creation. For an example of how to make use of this fact, see section <a class="el" href="usage_patterns.html#usage_patterns_advanced_data_uploading">Advanced data uploading</a>.</dd></dl>
<h1><a class="anchor" id="memory_mapping_cache_control"></a>
Cache flush and invalidate</h1>
<p >Memory in Vulkan doesn't need to be unmapped before using it on GPU, but unless a memory types has <code>VK_MEMORY_PROPERTY_HOST_COHERENT_BIT</code> flag set, you need to manually <b>invalidate</b> cache before reading of mapped pointer and <b>flush</b> cache after writing to mapped pointer. Map/unmap operations don't do that automatically. Vulkan provides following functions for this purpose <code>vkFlushMappedMemoryRanges()</code>, <code>vkInvalidateMappedMemoryRanges()</code>, but this library provides more convenient functions that refer to given allocation object: <a class="el" href="group__group__alloc.html#ga30c37c1eec6025f397be41644f48490f" title="Flushes memory of given allocation.">vmaFlushAllocation()</a>, <a class="el" href="group__group__alloc.html#gaaa8412919139ef413a4215ac6a290fae" title="Invalidates memory of given allocation.">vmaInvalidateAllocation()</a>, or multiple objects at once: <a class="el" href="group__group__alloc.html#gac3dd00da721875ed99fa8a881922bdfc" title="Flushes memory of given set of allocations.">vmaFlushAllocations()</a>, <a class="el" href="group__group__alloc.html#gab25b558d75f7378ec944a1522fdcc3c5" title="Invalidates memory of given set of allocations.">vmaInvalidateAllocations()</a>.</p>
<p >Regions of memory specified for flush/invalidate must be aligned to <code>VkPhysicalDeviceLimits::nonCoherentAtomSize</code>. This is automatically ensured by the library. In any memory type that is <code>HOST_VISIBLE</code> but not <code>HOST_COHERENT</code>, all allocations within blocks are aligned to this value, so their offsets are always multiply of <code>nonCoherentAtomSize</code> and two different allocations never share same "line" of this size.</p>
<p >Also, Windows drivers from all 3 PC GPU vendors (AMD, Intel, NVIDIA) currently provide <code>HOST_COHERENT</code> flag on all memory types that are <code>HOST_VISIBLE</code>, so on PC you may not need to bother. </p>
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<div class="textblock">Here is a list of all modules:</div><div class="directory">
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<tr id="row_0_" class="even"><td class="entry"><span style="width:16px;display:inline-block;">&#160;</span><a class="el" href="group__group__init.html" target="_self">Library initialization</a></td><td class="desc">API elements related to the initialization and management of the entire library, especially <a class="el" href="struct_vma_allocator.html" title="Represents main object of this library initialized.">VmaAllocator</a> object </td></tr>
<tr id="row_1_"><td class="entry"><span style="width:16px;display:inline-block;">&#160;</span><a class="el" href="group__group__alloc.html" target="_self">Memory allocation</a></td><td class="desc">API elements related to the allocation, deallocation, and management of Vulkan memory, buffers, images. Most basic ones being: <a class="el" href="group__group__alloc.html#gac72ee55598617e8eecca384e746bab51" title="Creates a new VkBuffer, allocates and binds memory for it.">vmaCreateBuffer()</a>, <a class="el" href="group__group__alloc.html#ga02a94f25679275851a53e82eacbcfc73" title="Function similar to vmaCreateBuffer().">vmaCreateImage()</a> </td></tr>
<tr id="row_2_" class="even"><td class="entry"><span style="width:16px;display:inline-block;">&#160;</span><a class="el" href="group__group__virtual.html" target="_self">Virtual allocator</a></td><td class="desc">API elements related to the mechanism of <a class="el" href="virtual_allocator.html">Virtual allocator</a> - using the core allocation algorithm for user-defined purpose without allocating any real GPU memory </td></tr>
<tr id="row_3_"><td class="entry"><span style="width:16px;display:inline-block;">&#160;</span><a class="el" href="group__group__stats.html" target="_self">Statistics</a></td><td class="desc">API elements that query current status of the allocator, from memory usage, budget, to full dump of the internal state in JSON format. See documentation chapter: <a class="el" href="statistics.html">Statistics</a> </td></tr>
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<div class="headertitle"><div class="title">OpenGL Interop </div></div>
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<div class="textblock"><p >VMA provides some features that help with interoperability with OpenGL.</p>
<h1><a class="anchor" id="opengl_interop_exporting_memory"></a>
Exporting memory</h1>
<p >If you want to attach <code>VkExportMemoryAllocateInfoKHR</code> structure to <code>pNext</code> chain of memory allocations made by the library:</p>
<p >It is recommended to create <a class="el" href="custom_memory_pools.html">Custom memory pools</a> for such allocations. Define and fill in your <code>VkExportMemoryAllocateInfoKHR</code> structure and attach it to <a class="el" href="struct_vma_pool_create_info.html#af0f8c58f51a2a7a0a389dc79565044d7" title="Additional pNext chain to be attached to VkMemoryAllocateInfo used for every allocation made by this ...">VmaPoolCreateInfo::pMemoryAllocateNext</a> while creating the custom pool. Please note that the structure must remain alive and unchanged for the whole lifetime of the <a class="el" href="struct_vma_pool.html" title="Represents custom memory pool.">VmaPool</a>, not only while creating it, as no copy of the structure is made, but its original pointer is used for each allocation instead.</p>
<p >If you want to export all memory allocated by the library from certain memory types, also dedicated allocations or other allocations made from default pools, an alternative solution is to fill in <a class="el" href="struct_vma_allocator_create_info.html#ae8f0db05e5cb4c43d7713bf4a49a736b" title="Either null or a pointer to an array of external memory handle types for each Vulkan memory type.">VmaAllocatorCreateInfo::pTypeExternalMemoryHandleTypes</a>. It should point to an array with <code>VkExternalMemoryHandleTypeFlagsKHR</code> to be automatically passed by the library through <code>VkExportMemoryAllocateInfoKHR</code> on each allocation made from a specific memory type. Please note that new versions of the library also support dedicated allocations created in custom pools.</p>
<p >You should not mix these two methods in a way that allows to apply both to the same memory type. Otherwise, <code>VkExportMemoryAllocateInfoKHR</code> structure would be attached twice to the <code>pNext</code> chain of <code>VkMemoryAllocateInfo</code>.</p>
<h1><a class="anchor" id="opengl_interop_custom_alignment"></a>
Custom alignment</h1>
<p >Buffers or images exported to a different API like OpenGL may require a different alignment, higher than the one used by the library automatically, queried from functions like <code>vkGetBufferMemoryRequirements</code>. To impose such alignment:</p>
<p >It is recommended to create <a class="el" href="custom_memory_pools.html">Custom memory pools</a> for such allocations. Set <a class="el" href="struct_vma_pool_create_info.html#ade3eca546f0c6ab4e8fbf20eb6d854cb" title="Additional minimum alignment to be used for all allocations created from this pool....">VmaPoolCreateInfo::minAllocationAlignment</a> member to the minimum alignment required for each allocation to be made out of this pool. The alignment actually used will be the maximum of this member and the alignment returned for the specific buffer or image from a function like <code>vkGetBufferMemoryRequirements</code>, which is called by VMA automatically.</p>
<p >If you want to create a buffer with a specific minimum alignment out of default pools, use special function <a class="el" href="group__group__alloc.html#gaa06a690013a0d01e60894ac378083834" title="Creates a buffer with additional minimum alignment.">vmaCreateBufferWithAlignment()</a>, which takes additional parameter <code>minAlignment</code>.</p>
<p >Note the problem of alignment affects only resources placed inside bigger <code>VkDeviceMemory</code> blocks and not dedicated allocations, as these, by definition, always have alignment = 0 because the resource is bound to the beginning of its dedicated block. Contrary to Direct3D 12, Vulkan doesn't have a concept of alignment of the entire memory block passed on its allocation. </p>
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<div class="textblock"><h1><a class="anchor" id="quick_start_project_setup"></a>
Project setup</h1>
<p >Vulkan Memory Allocator comes in form of a "stb-style" single header file. You don't need to build it as a separate library project. You can add this file directly to your project and submit it to code repository next to your other source files.</p>
<p >"Single header" doesn't mean that everything is contained in C/C++ declarations, like it tends to be in case of inline functions or C++ templates. It means that implementation is bundled with interface in a single file and needs to be extracted using preprocessor macro. If you don't do it properly, you will get linker errors.</p>
<p >To do it properly:</p>
<ol type="1">
<li>Include "vk_mem_alloc.h" file in each CPP file where you want to use the library. This includes declarations of all members of the library.</li>
<li>In exactly one CPP file define following macro before this include. It enables also internal definitions.</li>
</ol>
<div class="fragment"><div class="line"><span class="preprocessor">#define VMA_IMPLEMENTATION</span></div>
<div class="line"><span class="preprocessor">#include &quot;<a class="code" href="vk__mem__alloc_8h.html">vk_mem_alloc.h</a>&quot;</span></div>
<div class="ttc" id="avk__mem__alloc_8h_html"><div class="ttname"><a href="vk__mem__alloc_8h.html">vk_mem_alloc.h</a></div></div>
</div><!-- fragment --><p >It may be a good idea to create dedicated CPP file just for this purpose.</p>
<p >This library includes header <code>&lt;vulkan/vulkan.h&gt;</code>, which in turn includes <code>&lt;windows.h&gt;</code> on Windows. If you need some specific macros defined before including these headers (like <code>WIN32_LEAN_AND_MEAN</code> or <code>WINVER</code> for Windows, <code>VK_USE_PLATFORM_WIN32_KHR</code> for Vulkan), you must define them before every <code>#include</code> of this library.</p>
<p >This library is written in C++, but has C-compatible interface. Thus you can include and use <a class="el" href="vk__mem__alloc_8h.html">vk_mem_alloc.h</a> in C or C++ code, but full implementation with <code>VMA_IMPLEMENTATION</code> macro must be compiled as C++, NOT as C. Some features of C++14 used. STL containers, RTTI, or C++ exceptions are not used.</p>
<h1><a class="anchor" id="quick_start_initialization"></a>
Initialization</h1>
<p >At program startup:</p>
<ol type="1">
<li>Initialize Vulkan to have <code>VkPhysicalDevice</code>, <code>VkDevice</code> and <code>VkInstance</code> object.</li>
<li>Fill <a class="el" href="struct_vma_allocator_create_info.html" title="Description of a Allocator to be created.">VmaAllocatorCreateInfo</a> structure and create <a class="el" href="struct_vma_allocator.html" title="Represents main object of this library initialized.">VmaAllocator</a> object by calling <a class="el" href="group__group__init.html#ga200692051ddb34240248234f5f4c17bb" title="Creates VmaAllocator object.">vmaCreateAllocator()</a>.</li>
</ol>
<p >Only members <code>physicalDevice</code>, <code>device</code>, <code>instance</code> are required. However, you should inform the library which Vulkan version do you use by setting <a class="el" href="struct_vma_allocator_create_info.html#ae0ffc55139b54520a6bb704b29ffc285" title="Optional. The highest version of Vulkan that the application is designed to use.">VmaAllocatorCreateInfo::vulkanApiVersion</a> and which extensions did you enable by setting <a class="el" href="struct_vma_allocator_create_info.html#a392ea2ecbaff93f91a7c49f735ad4346" title="Flags for created allocator. Use VmaAllocatorCreateFlagBits enum.">VmaAllocatorCreateInfo::flags</a> (like <a class="el" href="group__group__init.html#gga4f87c9100d154a65a4ad495f7763cf7ca5f1b28b0414319d1687e1f2b30ab0089">VMA_ALLOCATOR_CREATE_BUFFER_DEVICE_ADDRESS_BIT</a> for VK_KHR_buffer_device_address). Otherwise, VMA would use only features of Vulkan 1.0 core with no extensions.</p>
<p >You may need to configure importing Vulkan functions. There are 3 ways to do this:</p>
<ol type="1">
<li><b>If you link with Vulkan static library</b> (e.g. "vulkan-1.lib" on Windows):<ul>
<li>You don't need to do anything.</li>
<li>VMA will use these, as macro <code>VMA_STATIC_VULKAN_FUNCTIONS</code> is defined to 1 by default.</li>
</ul>
</li>
<li><b>If you want VMA to fetch pointers to Vulkan functions dynamically</b> using <code>vkGetInstanceProcAddr</code>, <code>vkGetDeviceProcAddr</code> (this is the option presented in the example below):<ul>
<li>Define <code>VMA_STATIC_VULKAN_FUNCTIONS</code> to 0, <code>VMA_DYNAMIC_VULKAN_FUNCTIONS</code> to 1.</li>
<li>Provide pointers to these two functions via <a class="el" href="struct_vma_vulkan_functions.html#a3eafa102f5f8915f093f40675636b849" title="Required when using VMA_DYNAMIC_VULKAN_FUNCTIONS.">VmaVulkanFunctions::vkGetInstanceProcAddr</a>, <a class="el" href="struct_vma_vulkan_functions.html#ac383ab9af127e5e136622fa4ebea9e57" title="Required when using VMA_DYNAMIC_VULKAN_FUNCTIONS.">VmaVulkanFunctions::vkGetDeviceProcAddr</a>.</li>
<li>The library will fetch pointers to all other functions it needs internally.</li>
</ul>
</li>
<li><b>If you fetch pointers to all Vulkan functions in a custom way</b>, e.g. using some loader like <a href="https://github.com/zeux/volk">Volk</a>:<ul>
<li>Define <code>VMA_STATIC_VULKAN_FUNCTIONS</code> and <code>VMA_DYNAMIC_VULKAN_FUNCTIONS</code> to 0.</li>
<li>Pass these pointers via structure <a class="el" href="struct_vma_vulkan_functions.html" title="Pointers to some Vulkan functions - a subset used by the library.">VmaVulkanFunctions</a>.</li>
</ul>
</li>
</ol>
<div class="fragment"><div class="line"><a class="code hl_struct" href="struct_vma_vulkan_functions.html">VmaVulkanFunctions</a> vulkanFunctions = {};</div>
<div class="line">vulkanFunctions.<a class="code hl_variable" href="struct_vma_vulkan_functions.html#a3eafa102f5f8915f093f40675636b849">vkGetInstanceProcAddr</a> = &amp;vkGetInstanceProcAddr;</div>
<div class="line">vulkanFunctions.<a class="code hl_variable" href="struct_vma_vulkan_functions.html#ac383ab9af127e5e136622fa4ebea9e57">vkGetDeviceProcAddr</a> = &amp;vkGetDeviceProcAddr;</div>
<div class="line"> </div>
<div class="line"><a class="code hl_struct" href="struct_vma_allocator_create_info.html">VmaAllocatorCreateInfo</a> allocatorCreateInfo = {};</div>
<div class="line">allocatorCreateInfo.<a class="code hl_variable" href="struct_vma_allocator_create_info.html#ae0ffc55139b54520a6bb704b29ffc285">vulkanApiVersion</a> = VK_API_VERSION_1_2;</div>
<div class="line">allocatorCreateInfo.<a class="code hl_variable" href="struct_vma_allocator_create_info.html#a08230f04ae6ccf8a78150a9e829a7156">physicalDevice</a> = physicalDevice;</div>
<div class="line">allocatorCreateInfo.<a class="code hl_variable" href="struct_vma_allocator_create_info.html#ad924ddd77b04039c88d0c09b0ffcd500">device</a> = device;</div>
<div class="line">allocatorCreateInfo.<a class="code hl_variable" href="struct_vma_allocator_create_info.html#a70dd42e29b1df1d1b9b61532ae0b370b">instance</a> = instance;</div>
<div class="line">allocatorCreateInfo.<a class="code hl_variable" href="struct_vma_allocator_create_info.html#a3dc197be3227da7338b1643f70db36bd">pVulkanFunctions</a> = &amp;vulkanFunctions;</div>
<div class="line"> </div>
<div class="line"><a class="code hl_struct" href="struct_vma_allocator.html">VmaAllocator</a> allocator;</div>
<div class="line"><a class="code hl_function" href="group__group__init.html#ga200692051ddb34240248234f5f4c17bb">vmaCreateAllocator</a>(&amp;allocatorCreateInfo, &amp;allocator);</div>
<div class="ttc" id="agroup__group__init_html_ga200692051ddb34240248234f5f4c17bb"><div class="ttname"><a href="group__group__init.html#ga200692051ddb34240248234f5f4c17bb">vmaCreateAllocator</a></div><div class="ttdeci">VkResult vmaCreateAllocator(const VmaAllocatorCreateInfo *pCreateInfo, VmaAllocator *pAllocator)</div><div class="ttdoc">Creates VmaAllocator object.</div></div>
<div class="ttc" id="astruct_vma_allocator_create_info_html"><div class="ttname"><a href="struct_vma_allocator_create_info.html">VmaAllocatorCreateInfo</a></div><div class="ttdoc">Description of a Allocator to be created.</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:1001</div></div>
<div class="ttc" id="astruct_vma_allocator_create_info_html_a08230f04ae6ccf8a78150a9e829a7156"><div class="ttname"><a href="struct_vma_allocator_create_info.html#a08230f04ae6ccf8a78150a9e829a7156">VmaAllocatorCreateInfo::physicalDevice</a></div><div class="ttdeci">VkPhysicalDevice physicalDevice</div><div class="ttdoc">Vulkan physical device.</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:1006</div></div>
<div class="ttc" id="astruct_vma_allocator_create_info_html_a3dc197be3227da7338b1643f70db36bd"><div class="ttname"><a href="struct_vma_allocator_create_info.html#a3dc197be3227da7338b1643f70db36bd">VmaAllocatorCreateInfo::pVulkanFunctions</a></div><div class="ttdeci">const VmaVulkanFunctions * pVulkanFunctions</div><div class="ttdoc">Pointers to Vulkan functions. Can be null.</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:1049</div></div>
<div class="ttc" id="astruct_vma_allocator_create_info_html_a70dd42e29b1df1d1b9b61532ae0b370b"><div class="ttname"><a href="struct_vma_allocator_create_info.html#a70dd42e29b1df1d1b9b61532ae0b370b">VmaAllocatorCreateInfo::instance</a></div><div class="ttdeci">VkInstance instance</div><div class="ttdoc">Handle to Vulkan instance object.</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:1054</div></div>
<div class="ttc" id="astruct_vma_allocator_create_info_html_ad924ddd77b04039c88d0c09b0ffcd500"><div class="ttname"><a href="struct_vma_allocator_create_info.html#ad924ddd77b04039c88d0c09b0ffcd500">VmaAllocatorCreateInfo::device</a></div><div class="ttdeci">VkDevice device</div><div class="ttdoc">Vulkan device.</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:1009</div></div>
<div class="ttc" id="astruct_vma_allocator_create_info_html_ae0ffc55139b54520a6bb704b29ffc285"><div class="ttname"><a href="struct_vma_allocator_create_info.html#ae0ffc55139b54520a6bb704b29ffc285">VmaAllocatorCreateInfo::vulkanApiVersion</a></div><div class="ttdeci">uint32_t vulkanApiVersion</div><div class="ttdoc">Optional. The highest version of Vulkan that the application is designed to use.</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:1063</div></div>
<div class="ttc" id="astruct_vma_allocator_html"><div class="ttname"><a href="struct_vma_allocator.html">VmaAllocator</a></div><div class="ttdoc">Represents main object of this library initialized.</div></div>
<div class="ttc" id="astruct_vma_vulkan_functions_html"><div class="ttname"><a href="struct_vma_vulkan_functions.html">VmaVulkanFunctions</a></div><div class="ttdoc">Pointers to some Vulkan functions - a subset used by the library.</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:954</div></div>
<div class="ttc" id="astruct_vma_vulkan_functions_html_a3eafa102f5f8915f093f40675636b849"><div class="ttname"><a href="struct_vma_vulkan_functions.html#a3eafa102f5f8915f093f40675636b849">VmaVulkanFunctions::vkGetInstanceProcAddr</a></div><div class="ttdeci">PFN_vkGetInstanceProcAddr vkGetInstanceProcAddr</div><div class="ttdoc">Required when using VMA_DYNAMIC_VULKAN_FUNCTIONS.</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:956</div></div>
<div class="ttc" id="astruct_vma_vulkan_functions_html_ac383ab9af127e5e136622fa4ebea9e57"><div class="ttname"><a href="struct_vma_vulkan_functions.html#ac383ab9af127e5e136622fa4ebea9e57">VmaVulkanFunctions::vkGetDeviceProcAddr</a></div><div class="ttdeci">PFN_vkGetDeviceProcAddr vkGetDeviceProcAddr</div><div class="ttdoc">Required when using VMA_DYNAMIC_VULKAN_FUNCTIONS.</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:958</div></div>
</div><!-- fragment --><h1><a class="anchor" id="quick_start_resource_allocation"></a>
Resource allocation</h1>
<p >When you want to create a buffer or image:</p>
<ol type="1">
<li>Fill <code>VkBufferCreateInfo</code> / <code>VkImageCreateInfo</code> structure.</li>
<li>Fill <a class="el" href="struct_vma_allocation_create_info.html" title="Parameters of new VmaAllocation.">VmaAllocationCreateInfo</a> structure.</li>
<li>Call <a class="el" href="group__group__alloc.html#gac72ee55598617e8eecca384e746bab51" title="Creates a new VkBuffer, allocates and binds memory for it.">vmaCreateBuffer()</a> / <a class="el" href="group__group__alloc.html#ga02a94f25679275851a53e82eacbcfc73" title="Function similar to vmaCreateBuffer().">vmaCreateImage()</a> to get <code>VkBuffer</code>/<code>VkImage</code> with memory already allocated and bound to it, plus <a class="el" href="struct_vma_allocation.html" title="Represents single memory allocation.">VmaAllocation</a> objects that represents its underlying memory.</li>
</ol>
<div class="fragment"><div class="line">VkBufferCreateInfo bufferInfo = { VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO };</div>
<div class="line">bufferInfo.size = 65536;</div>
<div class="line">bufferInfo.usage = VK_BUFFER_USAGE_VERTEX_BUFFER_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT;</div>
<div class="line"> </div>
<div class="line"><a class="code hl_struct" href="struct_vma_allocation_create_info.html">VmaAllocationCreateInfo</a> allocInfo = {};</div>
<div class="line">allocInfo.<a class="code hl_variable" href="struct_vma_allocation_create_info.html#accb8b06b1f677d858cb9af20705fa910">usage</a> = <a class="code hl_enumvalue" href="group__group__alloc.html#ggaa5846affa1e9da3800e3e78fae2305cca27cde9026a84d34d525777baa41fce6e">VMA_MEMORY_USAGE_AUTO</a>;</div>
<div class="line"> </div>
<div class="line">VkBuffer buffer;</div>
<div class="line"><a class="code hl_struct" href="struct_vma_allocation.html">VmaAllocation</a> allocation;</div>
<div class="line"><a class="code hl_function" href="group__group__alloc.html#gac72ee55598617e8eecca384e746bab51">vmaCreateBuffer</a>(allocator, &amp;bufferInfo, &amp;allocInfo, &amp;buffer, &amp;allocation, <span class="keyword">nullptr</span>);</div>
<div class="ttc" id="agroup__group__alloc_html_gac72ee55598617e8eecca384e746bab51"><div class="ttname"><a href="group__group__alloc.html#gac72ee55598617e8eecca384e746bab51">vmaCreateBuffer</a></div><div class="ttdeci">VkResult vmaCreateBuffer(VmaAllocator allocator, const VkBufferCreateInfo *pBufferCreateInfo, const VmaAllocationCreateInfo *pAllocationCreateInfo, VkBuffer *pBuffer, VmaAllocation *pAllocation, VmaAllocationInfo *pAllocationInfo)</div><div class="ttdoc">Creates a new VkBuffer, allocates and binds memory for it.</div></div>
<div class="ttc" id="agroup__group__alloc_html_ggaa5846affa1e9da3800e3e78fae2305cca27cde9026a84d34d525777baa41fce6e"><div class="ttname"><a href="group__group__alloc.html#ggaa5846affa1e9da3800e3e78fae2305cca27cde9026a84d34d525777baa41fce6e">VMA_MEMORY_USAGE_AUTO</a></div><div class="ttdeci">@ VMA_MEMORY_USAGE_AUTO</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:492</div></div>
<div class="ttc" id="astruct_vma_allocation_create_info_html"><div class="ttname"><a href="struct_vma_allocation_create_info.html">VmaAllocationCreateInfo</a></div><div class="ttdoc">Parameters of new VmaAllocation.</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:1222</div></div>
<div class="ttc" id="astruct_vma_allocation_create_info_html_accb8b06b1f677d858cb9af20705fa910"><div class="ttname"><a href="struct_vma_allocation_create_info.html#accb8b06b1f677d858cb9af20705fa910">VmaAllocationCreateInfo::usage</a></div><div class="ttdeci">VmaMemoryUsage usage</div><div class="ttdoc">Intended usage of memory.</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:1230</div></div>
<div class="ttc" id="astruct_vma_allocation_html"><div class="ttname"><a href="struct_vma_allocation.html">VmaAllocation</a></div><div class="ttdoc">Represents single memory allocation.</div></div>
</div><!-- fragment --><p >Don't forget to destroy your objects when no longer needed:</p>
<div class="fragment"><div class="line"><a class="code hl_function" href="group__group__alloc.html#ga0d9f4e4ba5bf9aab1f1c746387753d77">vmaDestroyBuffer</a>(allocator, buffer, allocation);</div>
<div class="line"><a class="code hl_function" href="group__group__init.html#gaa8d164061c88f22fb1fd3c8f3534bc1d">vmaDestroyAllocator</a>(allocator);</div>
<div class="ttc" id="agroup__group__alloc_html_ga0d9f4e4ba5bf9aab1f1c746387753d77"><div class="ttname"><a href="group__group__alloc.html#ga0d9f4e4ba5bf9aab1f1c746387753d77">vmaDestroyBuffer</a></div><div class="ttdeci">void vmaDestroyBuffer(VmaAllocator allocator, VkBuffer buffer, VmaAllocation allocation)</div><div class="ttdoc">Destroys Vulkan buffer and frees allocated memory.</div></div>
<div class="ttc" id="agroup__group__init_html_gaa8d164061c88f22fb1fd3c8f3534bc1d"><div class="ttname"><a href="group__group__init.html#gaa8d164061c88f22fb1fd3c8f3534bc1d">vmaDestroyAllocator</a></div><div class="ttdeci">void vmaDestroyAllocator(VmaAllocator allocator)</div><div class="ttdoc">Destroys allocator object.</div></div>
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<li class="navelem"><a class="el" href="index.html">Vulkan Memory Allocator</a></li> </ul>
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<div class="headertitle"><div class="title">Resource aliasing (overlap) </div></div>
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<div class="textblock"><p >New explicit graphics APIs (Vulkan and Direct3D 12), thanks to manual memory management, give an opportunity to alias (overlap) multiple resources in the same region of memory - a feature not available in the old APIs (Direct3D 11, OpenGL). It can be useful to save video memory, but it must be used with caution.</p>
<p >For example, if you know the flow of your whole render frame in advance, you are going to use some intermediate textures or buffers only during a small range of render passes, and you know these ranges don't overlap in time, you can bind these resources to the same place in memory, even if they have completely different parameters (width, height, format etc.).</p>
<p ><img src="../gfx/Aliasing.png" alt="Resource aliasing (overlap)" class="inline"/></p>
<p >Such scenario is possible using VMA, but you need to create your images manually. Then you need to calculate parameters of an allocation to be made using formula:</p>
<ul>
<li>allocation size = max(size of each image)</li>
<li>allocation alignment = max(alignment of each image)</li>
<li>allocation memoryTypeBits = bitwise AND(memoryTypeBits of each image)</li>
</ul>
<p >Following example shows two different images bound to the same place in memory, allocated to fit largest of them.</p>
<div class="fragment"><div class="line"><span class="comment">// A 512x512 texture to be sampled.</span></div>
<div class="line">VkImageCreateInfo img1CreateInfo = { VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO };</div>
<div class="line">img1CreateInfo.imageType = VK_IMAGE_TYPE_2D;</div>
<div class="line">img1CreateInfo.extent.width = 512;</div>
<div class="line">img1CreateInfo.extent.height = 512;</div>
<div class="line">img1CreateInfo.extent.depth = 1;</div>
<div class="line">img1CreateInfo.mipLevels = 10;</div>
<div class="line">img1CreateInfo.arrayLayers = 1;</div>
<div class="line">img1CreateInfo.format = VK_FORMAT_R8G8B8A8_SRGB;</div>
<div class="line">img1CreateInfo.tiling = VK_IMAGE_TILING_OPTIMAL;</div>
<div class="line">img1CreateInfo.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;</div>
<div class="line">img1CreateInfo.usage = VK_IMAGE_USAGE_TRANSFER_DST_BIT | VK_IMAGE_USAGE_SAMPLED_BIT;</div>
<div class="line">img1CreateInfo.samples = VK_SAMPLE_COUNT_1_BIT;</div>
<div class="line"> </div>
<div class="line"><span class="comment">// A full screen texture to be used as color attachment.</span></div>
<div class="line">VkImageCreateInfo img2CreateInfo = { VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO };</div>
<div class="line">img2CreateInfo.imageType = VK_IMAGE_TYPE_2D;</div>
<div class="line">img2CreateInfo.extent.width = 1920;</div>
<div class="line">img2CreateInfo.extent.height = 1080;</div>
<div class="line">img2CreateInfo.extent.depth = 1;</div>
<div class="line">img2CreateInfo.mipLevels = 1;</div>
<div class="line">img2CreateInfo.arrayLayers = 1;</div>
<div class="line">img2CreateInfo.format = VK_FORMAT_R8G8B8A8_UNORM;</div>
<div class="line">img2CreateInfo.tiling = VK_IMAGE_TILING_OPTIMAL;</div>
<div class="line">img2CreateInfo.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;</div>
<div class="line">img2CreateInfo.usage = VK_IMAGE_USAGE_SAMPLED_BIT | VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;</div>
<div class="line">img2CreateInfo.samples = VK_SAMPLE_COUNT_1_BIT;</div>
<div class="line"> </div>
<div class="line">VkImage img1;</div>
<div class="line">res = vkCreateImage(device, &amp;img1CreateInfo, <span class="keyword">nullptr</span>, &amp;img1);</div>
<div class="line">VkImage img2;</div>
<div class="line">res = vkCreateImage(device, &amp;img2CreateInfo, <span class="keyword">nullptr</span>, &amp;img2);</div>
<div class="line"> </div>
<div class="line">VkMemoryRequirements img1MemReq;</div>
<div class="line">vkGetImageMemoryRequirements(device, img1, &amp;img1MemReq);</div>
<div class="line">VkMemoryRequirements img2MemReq;</div>
<div class="line">vkGetImageMemoryRequirements(device, img2, &amp;img2MemReq);</div>
<div class="line"> </div>
<div class="line">VkMemoryRequirements finalMemReq = {};</div>
<div class="line">finalMemReq.size = std::max(img1MemReq.size, img2MemReq.size);</div>
<div class="line">finalMemReq.alignment = std::max(img1MemReq.alignment, img2MemReq.alignment);</div>
<div class="line">finalMemReq.memoryTypeBits = img1MemReq.memoryTypeBits &amp; img2MemReq.memoryTypeBits;</div>
<div class="line"><span class="comment">// Validate if(finalMemReq.memoryTypeBits != 0)</span></div>
<div class="line"> </div>
<div class="line"><a class="code hl_struct" href="struct_vma_allocation_create_info.html">VmaAllocationCreateInfo</a> allocCreateInfo = {};</div>
<div class="line">allocCreateInfo.<a class="code hl_variable" href="struct_vma_allocation_create_info.html#a7fe8d81a1ad10b2a2faacacee5b15d6d">preferredFlags</a> = VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT;</div>
<div class="line"> </div>
<div class="line"><a class="code hl_struct" href="struct_vma_allocation.html">VmaAllocation</a> alloc;</div>
<div class="line">res = <a class="code hl_function" href="group__group__alloc.html#gabf28077dbf82d0908b8acbe8ee8dd9b8">vmaAllocateMemory</a>(allocator, &amp;finalMemReq, &amp;allocCreateInfo, &amp;alloc, <span class="keyword">nullptr</span>);</div>
<div class="line"> </div>
<div class="line">res = <a class="code hl_function" href="group__group__alloc.html#ga3d3ca45799923aa5d138e9e5f9eb2da5">vmaBindImageMemory</a>(allocator, alloc, img1);</div>
<div class="line">res = <a class="code hl_function" href="group__group__alloc.html#ga3d3ca45799923aa5d138e9e5f9eb2da5">vmaBindImageMemory</a>(allocator, alloc, img2);</div>
<div class="line"> </div>
<div class="line"><span class="comment">// You can use img1, img2 here, but not at the same time!</span></div>
<div class="line"> </div>
<div class="line"><a class="code hl_function" href="group__group__alloc.html#ga5fea5518972ae9094b1526cbcb19b05f">vmaFreeMemory</a>(allocator, alloc);</div>
<div class="line">vkDestroyImage(allocator, img2, <span class="keyword">nullptr</span>);</div>
<div class="line">vkDestroyImage(allocator, img1, <span class="keyword">nullptr</span>);</div>
<div class="ttc" id="agroup__group__alloc_html_ga3d3ca45799923aa5d138e9e5f9eb2da5"><div class="ttname"><a href="group__group__alloc.html#ga3d3ca45799923aa5d138e9e5f9eb2da5">vmaBindImageMemory</a></div><div class="ttdeci">VkResult vmaBindImageMemory(VmaAllocator allocator, VmaAllocation allocation, VkImage image)</div><div class="ttdoc">Binds image to allocation.</div></div>
<div class="ttc" id="agroup__group__alloc_html_ga5fea5518972ae9094b1526cbcb19b05f"><div class="ttname"><a href="group__group__alloc.html#ga5fea5518972ae9094b1526cbcb19b05f">vmaFreeMemory</a></div><div class="ttdeci">void vmaFreeMemory(VmaAllocator allocator, const VmaAllocation allocation)</div><div class="ttdoc">Frees memory previously allocated using vmaAllocateMemory(), vmaAllocateMemoryForBuffer(),...</div></div>
<div class="ttc" id="agroup__group__alloc_html_gabf28077dbf82d0908b8acbe8ee8dd9b8"><div class="ttname"><a href="group__group__alloc.html#gabf28077dbf82d0908b8acbe8ee8dd9b8">vmaAllocateMemory</a></div><div class="ttdeci">VkResult vmaAllocateMemory(VmaAllocator allocator, const VkMemoryRequirements *pVkMemoryRequirements, const VmaAllocationCreateInfo *pCreateInfo, VmaAllocation *pAllocation, VmaAllocationInfo *pAllocationInfo)</div><div class="ttdoc">General purpose memory allocation.</div></div>
<div class="ttc" id="astruct_vma_allocation_create_info_html"><div class="ttname"><a href="struct_vma_allocation_create_info.html">VmaAllocationCreateInfo</a></div><div class="ttdoc">Parameters of new VmaAllocation.</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:1222</div></div>
<div class="ttc" id="astruct_vma_allocation_create_info_html_a7fe8d81a1ad10b2a2faacacee5b15d6d"><div class="ttname"><a href="struct_vma_allocation_create_info.html#a7fe8d81a1ad10b2a2faacacee5b15d6d">VmaAllocationCreateInfo::preferredFlags</a></div><div class="ttdeci">VkMemoryPropertyFlags preferredFlags</div><div class="ttdoc">Flags that preferably should be set in a memory type chosen for an allocation.</div><div class="ttdef"><b>Definition:</b> vk_mem_alloc.h:1240</div></div>
<div class="ttc" id="astruct_vma_allocation_html"><div class="ttname"><a href="struct_vma_allocation.html">VmaAllocation</a></div><div class="ttdoc">Represents single memory allocation.</div></div>
</div><!-- fragment --><p >Remember that using resources that alias in memory requires proper synchronization. You need to issue a memory barrier to make sure commands that use <code>img1</code> and <code>img2</code> don't overlap on GPU timeline. You also need to treat a resource after aliasing as uninitialized - containing garbage data. For example, if you use <code>img1</code> and then want to use <code>img2</code>, you need to issue an image memory barrier for <code>img2</code> with <code>oldLayout</code> = <code>VK_IMAGE_LAYOUT_UNDEFINED</code>.</p>
<p >Additional considerations:</p>
<ul>
<li>Vulkan also allows to interpret contents of memory between aliasing resources consistently in some cases. See chapter 11.8. "Memory Aliasing" of Vulkan specification or <code>VK_IMAGE_CREATE_ALIAS_BIT</code> flag.</li>
<li>You can create more complex layout where different images and buffers are bound at different offsets inside one large allocation. For example, one can imagine a big texture used in some render passes, aliasing with a set of many small buffers used between in some further passes. To bind a resource at non-zero offset in an allocation, use <a class="el" href="group__group__alloc.html#ga927c944f45e0f2941182abb6f608e64a" title="Binds buffer to allocation with additional parameters.">vmaBindBufferMemory2()</a> / <a class="el" href="group__group__alloc.html#gaa8251ee81b0045a443e35b8e8aa021bc" title="Binds image to allocation with additional parameters.">vmaBindImageMemory2()</a>.</li>
<li>Before allocating memory for the resources you want to alias, check <code>memoryTypeBits</code> returned in memory requirements of each resource to make sure the bits overlap. Some GPUs may expose multiple memory types suitable e.g. only for buffers or images with <code>COLOR_ATTACHMENT</code> usage, so the sets of memory types supported by your resources may be disjoint. Aliasing them is not possible in that case. </li>
</ul>
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