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Vulkan-Samples/samples/extensions/calibrated_timestamps/calibrated_timestamps.cpp
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2025-09-04 10:54:47 +08:00

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/* Copyright (c) 2023-2025, Holochip Corporation
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 the "License";
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "calibrated_timestamps.h"
std::string time_domain_to_string(VkTimeDomainEXT input_time_domain)
{
switch (input_time_domain)
{
case VK_TIME_DOMAIN_DEVICE_EXT:
return "device time domain";
case VK_TIME_DOMAIN_CLOCK_MONOTONIC_EXT:
return "clock monotonic time domain";
case VK_TIME_DOMAIN_CLOCK_MONOTONIC_RAW_EXT:
return "clock monotonic raw time domain";
case VK_TIME_DOMAIN_QUERY_PERFORMANCE_COUNTER_EXT:
return "query performance time domain";
default:
return "unknown time domain";
}
}
CalibratedTimestamps::CalibratedTimestamps() :
is_time_domain_init(false)
{
title = "Calibrated Timestamps";
// Add instance extensions required for calibrated timestamps
add_instance_extension(VK_KHR_GET_PHYSICAL_DEVICE_PROPERTIES_2_EXTENSION_NAME);
// NOTICE THAT: calibrated timestamps is a DEVICE extension!
add_device_extension(VK_EXT_CALIBRATED_TIMESTAMPS_EXTENSION_NAME);
}
CalibratedTimestamps::~CalibratedTimestamps()
{
if (has_device())
{
vkDestroyPipeline(get_device().get_handle(), pipelines.skybox, nullptr);
vkDestroyPipeline(get_device().get_handle(), pipelines.reflect, nullptr);
vkDestroyPipeline(get_device().get_handle(), pipelines.composition, nullptr);
vkDestroyPipeline(get_device().get_handle(), pipelines.bloom[0], nullptr);
vkDestroyPipeline(get_device().get_handle(), pipelines.bloom[1], nullptr);
vkDestroyPipelineLayout(get_device().get_handle(), pipeline_layouts.models, nullptr);
vkDestroyPipelineLayout(get_device().get_handle(), pipeline_layouts.composition, nullptr);
vkDestroyPipelineLayout(get_device().get_handle(), pipeline_layouts.bloom_filter, nullptr);
vkDestroyDescriptorSetLayout(get_device().get_handle(), descriptor_set_layouts.models, nullptr);
vkDestroyDescriptorSetLayout(get_device().get_handle(), descriptor_set_layouts.composition, nullptr);
vkDestroyDescriptorSetLayout(get_device().get_handle(), descriptor_set_layouts.bloom_filter, nullptr);
vkDestroyRenderPass(get_device().get_handle(), offscreen.render_pass, nullptr);
vkDestroyRenderPass(get_device().get_handle(), filter_pass.render_pass, nullptr);
vkDestroyFramebuffer(get_device().get_handle(), offscreen.framebuffer, nullptr);
vkDestroyFramebuffer(get_device().get_handle(), filter_pass.framebuffer, nullptr);
vkDestroySampler(get_device().get_handle(), offscreen.sampler, nullptr);
vkDestroySampler(get_device().get_handle(), filter_pass.sampler, nullptr);
offscreen.depth.destroy(get_device().get_handle());
offscreen.color[0].destroy(get_device().get_handle());
offscreen.color[1].destroy(get_device().get_handle());
filter_pass.color[0].destroy(get_device().get_handle());
vkDestroySampler(get_device().get_handle(), textures.environment_map.sampler, nullptr);
}
}
void CalibratedTimestamps::request_gpu_features(vkb::PhysicalDevice &gpu)
{
if (gpu.get_features().samplerAnisotropy)
{
gpu.get_mutable_requested_features().samplerAnisotropy = VK_TRUE;
}
}
void CalibratedTimestamps::build_command_buffers()
{
timestamps_begin("Build_Command_Buffers");
VkCommandBufferBeginInfo command_buffer_begin_info = vkb::initializers::command_buffer_begin_info();
std::array<VkClearValue, 3> offscreen_clear_values{};
VkClearValue filter_clear_value{};
std::array<VkClearValue, 2> bloom_clear_values{};
VkRenderPassBeginInfo offscreen_render_pass_begin_info = vkb::initializers::render_pass_begin_info();
offscreen_render_pass_begin_info.renderPass = offscreen.render_pass;
offscreen_render_pass_begin_info.framebuffer = offscreen.framebuffer;
offscreen_render_pass_begin_info.renderArea.extent.width = offscreen.width;
offscreen_render_pass_begin_info.renderArea.extent.height = offscreen.height;
offscreen_render_pass_begin_info.clearValueCount = static_cast<uint32_t>(offscreen_clear_values.size());
offscreen_render_pass_begin_info.pClearValues = offscreen_clear_values.data();
VkRenderPassBeginInfo filter_render_pass_begin_info = vkb::initializers::render_pass_begin_info();
filter_render_pass_begin_info.framebuffer = filter_pass.framebuffer;
filter_render_pass_begin_info.renderPass = filter_pass.render_pass;
filter_render_pass_begin_info.clearValueCount = 1;
filter_render_pass_begin_info.renderArea.extent.width = filter_pass.width;
filter_render_pass_begin_info.renderArea.extent.height = filter_pass.height;
filter_render_pass_begin_info.pClearValues = &filter_clear_value;
VkRenderPassBeginInfo bloom_render_pass_begin_info = vkb::initializers::render_pass_begin_info();
bloom_render_pass_begin_info.renderPass = render_pass;
bloom_render_pass_begin_info.clearValueCount = static_cast<uint32_t>(bloom_clear_values.size());
bloom_render_pass_begin_info.renderArea.extent.width = width;
bloom_render_pass_begin_info.renderArea.extent.height = height;
bloom_render_pass_begin_info.pClearValues = bloom_clear_values.data();
VkViewport offscreen_viewport = vkb::initializers::viewport(static_cast<float>(offscreen.width), static_cast<float>(offscreen.height), 0.0f, 1.0f);
VkViewport filter_viewport = vkb::initializers::viewport(static_cast<float>(filter_pass.width), static_cast<float>(filter_pass.height), 0.0f, 1.0f);
VkViewport bloom_viewport = vkb::initializers::viewport(static_cast<float>(width), static_cast<float>(height), 0.0f, 1.0f);
VkRect2D offscreen_scissor = vkb::initializers::rect2D(offscreen.width, offscreen.height, 0, 0);
VkRect2D filter_scissor = vkb::initializers::rect2D(filter_pass.width, filter_pass.height, 0, 0);
VkRect2D bloom_scissor = vkb::initializers::rect2D(static_cast<int>(width), static_cast<int>(height), 0, 0);
for (int32_t i = 0; i < draw_cmd_buffers.size(); ++i)
{
VK_CHECK(vkBeginCommandBuffer(draw_cmd_buffers[i], &command_buffer_begin_info));
{
vkCmdBeginRenderPass(draw_cmd_buffers[i], &offscreen_render_pass_begin_info, VK_SUBPASS_CONTENTS_INLINE);
vkCmdSetViewport(draw_cmd_buffers[i], 0, 1, &offscreen_viewport);
vkCmdSetScissor(draw_cmd_buffers[i], 0, 1, &offscreen_scissor);
if (display_skybox)
{
vkCmdBindPipeline(draw_cmd_buffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.skybox);
vkCmdBindDescriptorSets(draw_cmd_buffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline_layouts.models, 0, 1, &descriptor_sets.skybox, 0, nullptr);
draw_model(models.skybox, draw_cmd_buffers[i]);
}
vkCmdBindPipeline(draw_cmd_buffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.reflect);
vkCmdBindDescriptorSets(draw_cmd_buffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline_layouts.models, 0, 1, &descriptor_sets.object, 0, nullptr);
draw_model(models.objects[models.object_index], draw_cmd_buffers[i]);
vkCmdEndRenderPass(draw_cmd_buffers[i]);
}
if (bloom)
{
vkCmdBeginRenderPass(draw_cmd_buffers[i], &filter_render_pass_begin_info, VK_SUBPASS_CONTENTS_INLINE);
vkCmdSetViewport(draw_cmd_buffers[i], 0, 1, &filter_viewport);
vkCmdSetScissor(draw_cmd_buffers[i], 0, 1, &filter_scissor);
vkCmdBindDescriptorSets(draw_cmd_buffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline_layouts.bloom_filter, 0, 1, &descriptor_sets.bloom_filter, 0, nullptr);
vkCmdBindPipeline(draw_cmd_buffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.bloom[1]);
vkCmdDraw(draw_cmd_buffers[i], 3, 1, 0, 0);
vkCmdEndRenderPass(draw_cmd_buffers[i]);
}
{
bloom_render_pass_begin_info.framebuffer = framebuffers[i];
vkCmdBeginRenderPass(draw_cmd_buffers[i], &bloom_render_pass_begin_info, VK_SUBPASS_CONTENTS_INLINE);
vkCmdSetViewport(draw_cmd_buffers[i], 0, 1, &bloom_viewport);
vkCmdSetScissor(draw_cmd_buffers[i], 0, 1, &bloom_scissor);
vkCmdBindDescriptorSets(draw_cmd_buffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline_layouts.composition, 0, 1, &descriptor_sets.composition, 0, nullptr);
vkCmdBindPipeline(draw_cmd_buffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.composition);
vkCmdDraw(draw_cmd_buffers[i], 3, 1, 0, 0);
if (bloom)
{
vkCmdBindPipeline(draw_cmd_buffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.bloom[0]);
vkCmdDraw(draw_cmd_buffers[i], 3, 1, 0, 0);
}
draw_ui(draw_cmd_buffers[i]);
vkCmdEndRenderPass(draw_cmd_buffers[i]);
}
VK_CHECK(vkEndCommandBuffer(draw_cmd_buffers[i]));
}
timestamps_end("Build_Command_Buffers");
}
void CalibratedTimestamps::create_attachment(VkFormat format, VkImageUsageFlagBits usage, FrameBufferAttachment *attachment)
{
VkImageAspectFlags aspect_mask = 0;
attachment->format = format;
if (usage & VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT)
{
aspect_mask = VK_IMAGE_ASPECT_COLOR_BIT;
}
if (usage & VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT)
{
aspect_mask = VK_IMAGE_ASPECT_DEPTH_BIT;
if (format >= VK_FORMAT_D16_UNORM_S8_UINT)
{
aspect_mask |= VK_IMAGE_ASPECT_STENCIL_BIT;
}
}
assert(aspect_mask > 0);
VkImageCreateInfo image = vkb::initializers::image_create_info();
image.imageType = VK_IMAGE_TYPE_2D;
image.format = format;
image.extent.width = offscreen.width;
image.extent.height = offscreen.height;
image.extent.depth = 1;
image.mipLevels = 1;
image.arrayLayers = 1;
image.samples = VK_SAMPLE_COUNT_1_BIT;
image.tiling = VK_IMAGE_TILING_OPTIMAL;
image.usage = usage | VK_IMAGE_USAGE_SAMPLED_BIT;
VkMemoryAllocateInfo memory_allocate_info = vkb::initializers::memory_allocate_info();
VkMemoryRequirements memory_requirements;
VK_CHECK(vkCreateImage(get_device().get_handle(), &image, nullptr, &attachment->image));
vkGetImageMemoryRequirements(get_device().get_handle(), attachment->image, &memory_requirements);
memory_allocate_info.allocationSize = memory_requirements.size;
memory_allocate_info.memoryTypeIndex = get_device().get_gpu().get_memory_type(memory_requirements.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
VK_CHECK(vkAllocateMemory(get_device().get_handle(), &memory_allocate_info, nullptr, &attachment->mem));
VK_CHECK(vkBindImageMemory(get_device().get_handle(), attachment->image, attachment->mem, 0));
VkImageViewCreateInfo image_view_create_info = vkb::initializers::image_view_create_info();
image_view_create_info.viewType = VK_IMAGE_VIEW_TYPE_2D;
image_view_create_info.format = format;
image_view_create_info.subresourceRange = {};
image_view_create_info.subresourceRange.aspectMask = aspect_mask;
image_view_create_info.subresourceRange.baseMipLevel = 0;
image_view_create_info.subresourceRange.levelCount = 1;
image_view_create_info.subresourceRange.baseArrayLayer = 0;
image_view_create_info.subresourceRange.layerCount = 1;
image_view_create_info.image = attachment->image;
VK_CHECK(vkCreateImageView(get_device().get_handle(), &image_view_create_info, nullptr, &attachment->view));
}
void CalibratedTimestamps::prepare_offscreen_buffer()
{
const std::vector<VkFormat> float_format_priority_list = {
VK_FORMAT_R32G32B32A32_SFLOAT,
VK_FORMAT_R16G16B16A16_SFLOAT // Guaranteed blend support for this
};
VkFormat color_format = vkb::choose_blendable_format(get_device().get_gpu().get_handle(), float_format_priority_list);
{
offscreen.width = static_cast<int32_t>(width);
offscreen.height = static_cast<int32_t>(height);
create_attachment(color_format, VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT, &offscreen.color[0]);
create_attachment(color_format, VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT, &offscreen.color[1]);
create_attachment(depth_format, VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT, &offscreen.depth);
std::array<VkAttachmentDescription, 3> attachment_descriptions = {};
for (uint32_t i = 0; i < 3; ++i)
{
attachment_descriptions[i].samples = VK_SAMPLE_COUNT_1_BIT;
attachment_descriptions[i].loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
attachment_descriptions[i].storeOp = VK_ATTACHMENT_STORE_OP_STORE;
attachment_descriptions[i].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
attachment_descriptions[i].stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
if (i == 2)
{
attachment_descriptions[i].initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
attachment_descriptions[i].finalLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
}
else
{
attachment_descriptions[i].initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
attachment_descriptions[i].finalLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
}
}
attachment_descriptions[0].format = offscreen.color[0].format;
attachment_descriptions[1].format = offscreen.color[1].format;
attachment_descriptions[2].format = offscreen.depth.format;
std::vector<VkAttachmentReference> color_references;
color_references.push_back({0, VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL});
color_references.push_back({1, VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL});
VkAttachmentReference depth_reference = {};
depth_reference.attachment = 2;
depth_reference.layout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
VkSubpassDescription subpass = {};
subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
subpass.pColorAttachments = color_references.data();
subpass.colorAttachmentCount = static_cast<uint32_t>(color_references.size());
subpass.pDepthStencilAttachment = &depth_reference;
std::array<VkSubpassDependency, 2> dependencies{};
dependencies[0].srcSubpass = VK_SUBPASS_EXTERNAL;
dependencies[0].dstSubpass = 0;
dependencies[0].srcStageMask = VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT;
dependencies[0].dstStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
dependencies[0].srcAccessMask = VK_ACCESS_MEMORY_READ_BIT;
dependencies[0].dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_READ_BIT | VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
dependencies[0].dependencyFlags = VK_DEPENDENCY_BY_REGION_BIT;
dependencies[1].srcSubpass = 0;
dependencies[1].dstSubpass = VK_SUBPASS_EXTERNAL;
dependencies[1].srcStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
dependencies[1].dstStageMask = VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT;
dependencies[1].srcAccessMask = VK_ACCESS_COLOR_ATTACHMENT_READ_BIT | VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
dependencies[1].dstAccessMask = VK_ACCESS_MEMORY_READ_BIT;
dependencies[1].dependencyFlags = VK_DEPENDENCY_BY_REGION_BIT;
VkRenderPassCreateInfo render_pass_create_info = {};
render_pass_create_info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
render_pass_create_info.pAttachments = attachment_descriptions.data();
render_pass_create_info.attachmentCount = static_cast<uint32_t>(attachment_descriptions.size());
render_pass_create_info.subpassCount = 1;
render_pass_create_info.pSubpasses = &subpass;
render_pass_create_info.dependencyCount = static_cast<uint32_t>(dependencies.size());
render_pass_create_info.pDependencies = dependencies.data();
VK_CHECK(vkCreateRenderPass(get_device().get_handle(), &render_pass_create_info, nullptr, &offscreen.render_pass));
std::array<VkImageView, 3> attachments{};
attachments[0] = offscreen.color[0].view;
attachments[1] = offscreen.color[1].view;
attachments[2] = offscreen.depth.view;
VkFramebufferCreateInfo framebuffer_create_info = {};
framebuffer_create_info.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO;
framebuffer_create_info.pNext = nullptr;
framebuffer_create_info.renderPass = offscreen.render_pass;
framebuffer_create_info.pAttachments = attachments.data();
framebuffer_create_info.attachmentCount = static_cast<uint32_t>(attachments.size());
framebuffer_create_info.width = offscreen.width;
framebuffer_create_info.height = offscreen.height;
framebuffer_create_info.layers = 1;
VK_CHECK(vkCreateFramebuffer(get_device().get_handle(), &framebuffer_create_info, nullptr, &offscreen.framebuffer));
VkSamplerCreateInfo sampler = vkb::initializers::sampler_create_info();
sampler.magFilter = VK_FILTER_NEAREST;
sampler.minFilter = VK_FILTER_NEAREST;
sampler.mipmapMode = VK_SAMPLER_MIPMAP_MODE_LINEAR;
sampler.addressModeU = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
sampler.addressModeV = sampler.addressModeU;
sampler.addressModeW = sampler.addressModeU;
sampler.mipLodBias = 0.0f;
sampler.maxAnisotropy = 1.0f;
sampler.minLod = 0.0f;
sampler.maxLod = 1.0f;
sampler.borderColor = VK_BORDER_COLOR_FLOAT_OPAQUE_WHITE;
VK_CHECK(vkCreateSampler(get_device().get_handle(), &sampler, nullptr, &offscreen.sampler));
}
{
filter_pass.width = static_cast<int32_t>(width);
filter_pass.height = static_cast<int32_t>(height);
create_attachment(color_format, VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT, &filter_pass.color[0]);
VkAttachmentDescription attachment_description{};
attachment_description.samples = VK_SAMPLE_COUNT_1_BIT;
attachment_description.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
attachment_description.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
attachment_description.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
attachment_description.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
attachment_description.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
attachment_description.finalLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
attachment_description.format = filter_pass.color[0].format;
std::vector<VkAttachmentReference> color_references;
color_references.push_back({0, VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL});
VkSubpassDescription subpass = {};
subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
subpass.pColorAttachments = color_references.data();
subpass.colorAttachmentCount = static_cast<uint32_t>(color_references.size());
std::array<VkSubpassDependency, 2> dependencies{};
dependencies[0].srcSubpass = VK_SUBPASS_EXTERNAL;
dependencies[0].dstSubpass = 0;
dependencies[0].srcStageMask = VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT;
dependencies[0].dstStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
dependencies[0].srcAccessMask = VK_ACCESS_MEMORY_READ_BIT;
dependencies[0].dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_READ_BIT | VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
dependencies[0].dependencyFlags = VK_DEPENDENCY_BY_REGION_BIT;
dependencies[1].srcSubpass = 0;
dependencies[1].dstSubpass = VK_SUBPASS_EXTERNAL;
dependencies[1].srcStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
dependencies[1].dstStageMask = VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT;
dependencies[1].srcAccessMask = VK_ACCESS_COLOR_ATTACHMENT_READ_BIT | VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
dependencies[1].dstAccessMask = VK_ACCESS_MEMORY_READ_BIT;
dependencies[1].dependencyFlags = VK_DEPENDENCY_BY_REGION_BIT;
VkRenderPassCreateInfo render_pass_create_info = {};
render_pass_create_info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
render_pass_create_info.pAttachments = &attachment_description;
render_pass_create_info.attachmentCount = 1;
render_pass_create_info.subpassCount = 1;
render_pass_create_info.pSubpasses = &subpass;
render_pass_create_info.dependencyCount = static_cast<uint32_t>(dependencies.size());
render_pass_create_info.pDependencies = dependencies.data();
VK_CHECK(vkCreateRenderPass(get_device().get_handle(), &render_pass_create_info, nullptr, &filter_pass.render_pass));
VkImageView attachment = filter_pass.color[0].view;
VkFramebufferCreateInfo framebuffer_create_info = {};
framebuffer_create_info.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO;
framebuffer_create_info.pNext = nullptr;
framebuffer_create_info.renderPass = filter_pass.render_pass;
framebuffer_create_info.pAttachments = &attachment;
framebuffer_create_info.attachmentCount = 1;
framebuffer_create_info.width = filter_pass.width;
framebuffer_create_info.height = filter_pass.height;
framebuffer_create_info.layers = 1;
VK_CHECK(vkCreateFramebuffer(get_device().get_handle(), &framebuffer_create_info, nullptr, &filter_pass.framebuffer));
VkSamplerCreateInfo sampler = vkb::initializers::sampler_create_info();
sampler.magFilter = VK_FILTER_NEAREST;
sampler.minFilter = VK_FILTER_NEAREST;
sampler.mipmapMode = VK_SAMPLER_MIPMAP_MODE_LINEAR;
sampler.addressModeU = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
sampler.addressModeV = sampler.addressModeU;
sampler.addressModeW = sampler.addressModeU;
sampler.mipLodBias = 0.0f;
sampler.maxAnisotropy = 1.0f;
sampler.minLod = 0.0f;
sampler.maxLod = 1.0f;
sampler.borderColor = VK_BORDER_COLOR_FLOAT_OPAQUE_WHITE;
VK_CHECK(vkCreateSampler(get_device().get_handle(), &sampler, nullptr, &filter_pass.sampler));
}
}
void CalibratedTimestamps::load_assets()
{
timestamps_begin("loadAssets");
models.skybox = load_model("scenes/cube.gltf");
std::vector<std::string> filenames = {"geosphere.gltf", "teapot.gltf", "torusknot.gltf"};
object_names = {"Sphere", "Teapot", "Torusknot"};
for (const auto &file : filenames)
{
auto object = load_model("scenes/" + file);
models.objects.emplace_back(std::move(object));
}
auto geosphere_matrix = glm::mat4(1.0f);
auto teapot_matrix = glm::mat4(1.0f);
teapot_matrix = glm::scale(teapot_matrix, glm::vec3(10.0f, 10.0f, 10.0f));
teapot_matrix = glm::rotate(teapot_matrix, glm::radians(180.0f), glm::vec3(1.0f, 0.0f, 0.0f));
auto torus_matrix = glm::mat4(1.0f);
models.transforms.push_back(geosphere_matrix);
models.transforms.push_back(teapot_matrix);
models.transforms.push_back(torus_matrix);
textures.environment_map = load_texture_cubemap("textures/uffizi_rgba16f_cube.ktx", vkb::sg::Image::Color);
timestamps_end("loadAssets");
}
void CalibratedTimestamps::setup_descriptor_pool()
{
std::vector<VkDescriptorPoolSize> pool_sizes = {
vkb::initializers::descriptor_pool_size(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 4),
vkb::initializers::descriptor_pool_size(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 6)};
uint32_t num_descriptor_sets = 4;
VkDescriptorPoolCreateInfo descriptor_pool_create_info =
vkb::initializers::descriptor_pool_create_info(static_cast<uint32_t>(pool_sizes.size()), pool_sizes.data(), num_descriptor_sets);
VK_CHECK(vkCreateDescriptorPool(get_device().get_handle(), &descriptor_pool_create_info, nullptr, &descriptor_pool));
}
void CalibratedTimestamps::setup_descriptor_set_layout()
{
std::vector<VkDescriptorSetLayoutBinding> set_layout_bindings = {
vkb::initializers::descriptor_set_layout_binding(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, VK_SHADER_STAGE_VERTEX_BIT | VK_SHADER_STAGE_FRAGMENT_BIT, 0),
vkb::initializers::descriptor_set_layout_binding(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, VK_SHADER_STAGE_FRAGMENT_BIT, 1),
vkb::initializers::descriptor_set_layout_binding(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, VK_SHADER_STAGE_FRAGMENT_BIT, 2),
};
VkDescriptorSetLayoutCreateInfo descriptor_layout_create_info =
vkb::initializers::descriptor_set_layout_create_info(set_layout_bindings.data(), static_cast<uint32_t>(set_layout_bindings.size()));
VK_CHECK(vkCreateDescriptorSetLayout(get_device().get_handle(), &descriptor_layout_create_info, nullptr, &descriptor_set_layouts.models));
VkPipelineLayoutCreateInfo pipeline_layout_create_info =
vkb::initializers::pipeline_layout_create_info(
&descriptor_set_layouts.models,
1);
VK_CHECK(vkCreatePipelineLayout(get_device().get_handle(), &pipeline_layout_create_info, nullptr, &pipeline_layouts.models));
set_layout_bindings = {
vkb::initializers::descriptor_set_layout_binding(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, VK_SHADER_STAGE_FRAGMENT_BIT, 0),
vkb::initializers::descriptor_set_layout_binding(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, VK_SHADER_STAGE_FRAGMENT_BIT, 1),
};
descriptor_layout_create_info = vkb::initializers::descriptor_set_layout_create_info(set_layout_bindings.data(), static_cast<uint32_t>(set_layout_bindings.size()));
VK_CHECK(vkCreateDescriptorSetLayout(get_device().get_handle(), &descriptor_layout_create_info, nullptr, &descriptor_set_layouts.bloom_filter));
pipeline_layout_create_info = vkb::initializers::pipeline_layout_create_info(&descriptor_set_layouts.bloom_filter, 1);
VK_CHECK(vkCreatePipelineLayout(get_device().get_handle(), &pipeline_layout_create_info, nullptr, &pipeline_layouts.bloom_filter));
set_layout_bindings = {
vkb::initializers::descriptor_set_layout_binding(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, VK_SHADER_STAGE_FRAGMENT_BIT, 0),
vkb::initializers::descriptor_set_layout_binding(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, VK_SHADER_STAGE_FRAGMENT_BIT, 1),
};
descriptor_layout_create_info = vkb::initializers::descriptor_set_layout_create_info(set_layout_bindings.data(), static_cast<uint32_t>(set_layout_bindings.size()));
VK_CHECK(vkCreateDescriptorSetLayout(get_device().get_handle(), &descriptor_layout_create_info, nullptr, &descriptor_set_layouts.composition));
pipeline_layout_create_info = vkb::initializers::pipeline_layout_create_info(&descriptor_set_layouts.composition, 1);
VK_CHECK(vkCreatePipelineLayout(get_device().get_handle(), &pipeline_layout_create_info, nullptr, &pipeline_layouts.composition));
}
void CalibratedTimestamps::setup_descriptor_sets()
{
VkDescriptorSetAllocateInfo alloc_info = vkb::initializers::descriptor_set_allocate_info(descriptor_pool, &descriptor_set_layouts.models, 1);
VK_CHECK(vkAllocateDescriptorSets(get_device().get_handle(), &alloc_info, &descriptor_sets.object));
VkDescriptorBufferInfo matrix_buffer_descriptor = create_descriptor(*uniform_buffers.matrices);
VkDescriptorImageInfo environment_image_descriptor = create_descriptor(textures.environment_map);
VkDescriptorBufferInfo params_buffer_descriptor = create_descriptor(*uniform_buffers.params);
std::vector<VkWriteDescriptorSet> write_descriptor_sets = {
vkb::initializers::write_descriptor_set(descriptor_sets.object, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 0, &matrix_buffer_descriptor),
vkb::initializers::write_descriptor_set(descriptor_sets.object, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1, &environment_image_descriptor),
vkb::initializers::write_descriptor_set(descriptor_sets.object, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 2, &params_buffer_descriptor),
};
vkUpdateDescriptorSets(get_device().get_handle(), static_cast<uint32_t>(write_descriptor_sets.size()), write_descriptor_sets.data(), 0, nullptr);
VK_CHECK(vkAllocateDescriptorSets(get_device().get_handle(), &alloc_info, &descriptor_sets.skybox));
matrix_buffer_descriptor = create_descriptor(*uniform_buffers.matrices);
environment_image_descriptor = create_descriptor(textures.environment_map);
params_buffer_descriptor = create_descriptor(*uniform_buffers.params);
write_descriptor_sets = {
vkb::initializers::write_descriptor_set(descriptor_sets.skybox, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 0, &matrix_buffer_descriptor),
vkb::initializers::write_descriptor_set(descriptor_sets.skybox, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1, &environment_image_descriptor),
vkb::initializers::write_descriptor_set(descriptor_sets.skybox, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 2, &params_buffer_descriptor),
};
vkUpdateDescriptorSets(get_device().get_handle(), static_cast<uint32_t>(write_descriptor_sets.size()), write_descriptor_sets.data(), 0, nullptr);
alloc_info = vkb::initializers::descriptor_set_allocate_info(descriptor_pool, &descriptor_set_layouts.bloom_filter, 1);
VK_CHECK(vkAllocateDescriptorSets(get_device().get_handle(), &alloc_info, &descriptor_sets.bloom_filter));
std::vector<VkDescriptorImageInfo> color_descriptors = {
vkb::initializers::descriptor_image_info(offscreen.sampler, offscreen.color[0].view, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL),
vkb::initializers::descriptor_image_info(offscreen.sampler, offscreen.color[1].view, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL),
};
write_descriptor_sets = {
vkb::initializers::write_descriptor_set(descriptor_sets.bloom_filter, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 0, &color_descriptors[0]),
vkb::initializers::write_descriptor_set(descriptor_sets.bloom_filter, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1, &color_descriptors[1]),
};
vkUpdateDescriptorSets(get_device().get_handle(), static_cast<uint32_t>(write_descriptor_sets.size()), write_descriptor_sets.data(), 0, nullptr);
alloc_info = vkb::initializers::descriptor_set_allocate_info(descriptor_pool, &descriptor_set_layouts.composition, 1);
VK_CHECK(vkAllocateDescriptorSets(get_device().get_handle(), &alloc_info, &descriptor_sets.composition));
color_descriptors = {
vkb::initializers::descriptor_image_info(offscreen.sampler, offscreen.color[0].view, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL),
vkb::initializers::descriptor_image_info(offscreen.sampler, filter_pass.color[0].view, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL),
};
write_descriptor_sets = {
vkb::initializers::write_descriptor_set(descriptor_sets.composition, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 0, &color_descriptors[0]),
vkb::initializers::write_descriptor_set(descriptor_sets.composition, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1, &color_descriptors[1]),
};
vkUpdateDescriptorSets(get_device().get_handle(), static_cast<uint32_t>(write_descriptor_sets.size()), write_descriptor_sets.data(), 0, nullptr);
}
void CalibratedTimestamps::prepare_pipelines()
{
VkPipelineInputAssemblyStateCreateInfo input_assembly_state = vkb::initializers::pipeline_input_assembly_state_create_info(VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST, 0, VK_FALSE);
VkPipelineRasterizationStateCreateInfo rasterization_state = vkb::initializers::pipeline_rasterization_state_create_info(VK_POLYGON_MODE_FILL, VK_CULL_MODE_BACK_BIT, VK_FRONT_FACE_COUNTER_CLOCKWISE, 0);
VkPipelineColorBlendAttachmentState blend_attachment_state = vkb::initializers::pipeline_color_blend_attachment_state(0xf, VK_FALSE);
VkPipelineColorBlendStateCreateInfo color_blend_state = vkb::initializers::pipeline_color_blend_state_create_info(1, &blend_attachment_state);
VkPipelineDepthStencilStateCreateInfo depth_stencil_state = vkb::initializers::pipeline_depth_stencil_state_create_info(VK_FALSE, VK_FALSE, VK_COMPARE_OP_GREATER);
VkPipelineViewportStateCreateInfo viewport_state = vkb::initializers::pipeline_viewport_state_create_info(1, 1, 0);
VkPipelineMultisampleStateCreateInfo multisample_state = vkb::initializers::pipeline_multisample_state_create_info(VK_SAMPLE_COUNT_1_BIT, 0);
std::vector<VkDynamicState> dynamic_state_enables = {VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR};
VkPipelineDynamicStateCreateInfo dynamic_state = vkb::initializers::pipeline_dynamic_state_create_info(dynamic_state_enables.data(), static_cast<uint32_t>(dynamic_state_enables.size()), 0);
VkGraphicsPipelineCreateInfo pipeline_create_info = vkb::initializers::pipeline_create_info(pipeline_layouts.models, render_pass, 0);
pipeline_create_info.pInputAssemblyState = &input_assembly_state;
pipeline_create_info.pRasterizationState = &rasterization_state;
pipeline_create_info.pColorBlendState = &color_blend_state;
pipeline_create_info.pMultisampleState = &multisample_state;
pipeline_create_info.pViewportState = &viewport_state;
pipeline_create_info.pDepthStencilState = &depth_stencil_state;
pipeline_create_info.pDynamicState = &dynamic_state;
std::array<VkPipelineShaderStageCreateInfo, 2> shader_stages{};
pipeline_create_info.stageCount = static_cast<uint32_t>(shader_stages.size());
pipeline_create_info.pStages = shader_stages.data();
VkSpecializationInfo specialization_info;
std::array<VkSpecializationMapEntry, 1> specialization_map_entries{};
VkPipelineVertexInputStateCreateInfo empty_input_state = vkb::initializers::pipeline_vertex_input_state_create_info();
pipeline_create_info.pVertexInputState = &empty_input_state;
shader_stages[0] = load_shader("hdr", "composition.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
shader_stages[1] = load_shader("hdr", "composition.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
pipeline_create_info.layout = pipeline_layouts.composition;
pipeline_create_info.renderPass = render_pass;
rasterization_state.cullMode = VK_CULL_MODE_FRONT_BIT;
color_blend_state.attachmentCount = 1;
color_blend_state.pAttachments = &blend_attachment_state;
VK_CHECK(vkCreateGraphicsPipelines(get_device().get_handle(), pipeline_cache, 1, &pipeline_create_info, nullptr, &pipelines.composition));
shader_stages[0] = load_shader("hdr", "bloom.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
shader_stages[1] = load_shader("hdr", "bloom.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
color_blend_state.pAttachments = &blend_attachment_state;
blend_attachment_state.colorWriteMask = 0xF;
blend_attachment_state.blendEnable = VK_TRUE;
blend_attachment_state.colorBlendOp = VK_BLEND_OP_ADD;
blend_attachment_state.srcColorBlendFactor = VK_BLEND_FACTOR_ONE;
blend_attachment_state.dstColorBlendFactor = VK_BLEND_FACTOR_ONE;
blend_attachment_state.alphaBlendOp = VK_BLEND_OP_ADD;
blend_attachment_state.srcAlphaBlendFactor = VK_BLEND_FACTOR_SRC_ALPHA;
blend_attachment_state.dstAlphaBlendFactor = VK_BLEND_FACTOR_DST_ALPHA;
specialization_map_entries[0] = vkb::initializers::specialization_map_entry(0, 0, sizeof(uint32_t));
uint32_t dir = 1;
specialization_info = vkb::initializers::specialization_info(1, specialization_map_entries.data(), sizeof(dir), &dir);
shader_stages[1].pSpecializationInfo = &specialization_info;
VK_CHECK(vkCreateGraphicsPipelines(get_device().get_handle(), pipeline_cache, 1, &pipeline_create_info, nullptr, &pipelines.bloom[0]));
pipeline_create_info.renderPass = filter_pass.render_pass;
dir = 0;
VK_CHECK(vkCreateGraphicsPipelines(get_device().get_handle(), pipeline_cache, 1, &pipeline_create_info, nullptr, &pipelines.bloom[1]));
rasterization_state.cullMode = VK_CULL_MODE_BACK_BIT;
std::vector<VkPipelineColorBlendAttachmentState> blend_attachment_states = {
vkb::initializers::pipeline_color_blend_attachment_state(0xf, VK_FALSE),
vkb::initializers::pipeline_color_blend_attachment_state(0xf, VK_FALSE),
};
std::vector<VkVertexInputBindingDescription> vertex_input_bindings = {
vkb::initializers::vertex_input_binding_description(0, sizeof(Vertex), VK_VERTEX_INPUT_RATE_VERTEX),
};
std::vector<VkVertexInputAttributeDescription> vertex_input_attributes = {
vkb::initializers::vertex_input_attribute_description(0, 0, VK_FORMAT_R32G32B32_SFLOAT, 0),
vkb::initializers::vertex_input_attribute_description(0, 1, VK_FORMAT_R32G32B32_SFLOAT, sizeof(float) * 3)};
VkPipelineVertexInputStateCreateInfo vertex_input_state = vkb::initializers::pipeline_vertex_input_state_create_info();
vertex_input_state.vertexBindingDescriptionCount = static_cast<uint32_t>(vertex_input_bindings.size());
vertex_input_state.pVertexBindingDescriptions = vertex_input_bindings.data();
vertex_input_state.vertexAttributeDescriptionCount = static_cast<uint32_t>(vertex_input_attributes.size());
vertex_input_state.pVertexAttributeDescriptions = vertex_input_attributes.data();
pipeline_create_info.pVertexInputState = &vertex_input_state;
blend_attachment_state.blendEnable = VK_FALSE;
pipeline_create_info.layout = pipeline_layouts.models;
pipeline_create_info.renderPass = offscreen.render_pass;
color_blend_state.attachmentCount = static_cast<uint32_t>(blend_attachment_states.size());
color_blend_state.pAttachments = blend_attachment_states.data();
shader_stages[0] = load_shader("hdr", "gbuffer.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
shader_stages[1] = load_shader("hdr", "gbuffer.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
specialization_map_entries[0] = vkb::initializers::specialization_map_entry(0, 0, sizeof(uint32_t));
uint32_t shadertype = 0;
specialization_info = vkb::initializers::specialization_info(1, specialization_map_entries.data(), sizeof(shadertype), &shadertype);
shader_stages[0].pSpecializationInfo = &specialization_info;
shader_stages[1].pSpecializationInfo = &specialization_info;
VK_CHECK(vkCreateGraphicsPipelines(get_device().get_handle(), pipeline_cache, 1, &pipeline_create_info, nullptr, &pipelines.skybox));
shadertype = 1;
depth_stencil_state.depthWriteEnable = VK_TRUE;
depth_stencil_state.depthTestEnable = VK_TRUE;
rasterization_state.cullMode = VK_CULL_MODE_FRONT_BIT;
VK_CHECK(vkCreateGraphicsPipelines(get_device().get_handle(), pipeline_cache, 1, &pipeline_create_info, nullptr, &pipelines.reflect));
}
void CalibratedTimestamps::prepare_uniform_buffers()
{
uniform_buffers.matrices = std::make_unique<vkb::core::BufferC>(get_device(), sizeof(ubo_vs), VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT, VMA_MEMORY_USAGE_CPU_TO_GPU);
uniform_buffers.params = std::make_unique<vkb::core::BufferC>(get_device(), sizeof(ubo_params), VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT, VMA_MEMORY_USAGE_CPU_TO_GPU);
update_uniform_buffers();
uniform_buffers.params->convert_and_update(ubo_params);
}
void CalibratedTimestamps::update_uniform_buffers()
{
timestamps_begin("update ubo");
ubo_vs.projection = camera.matrices.perspective;
ubo_vs.model_view = camera.matrices.view * models.transforms[models.object_index];
ubo_vs.skybox_model_view = camera.matrices.view;
ubo_vs.inverse_modelview = glm::inverse(camera.matrices.view);
uniform_buffers.matrices->convert_and_update(ubo_vs);
timestamps_end("update ubo");
}
void CalibratedTimestamps::draw()
{
timestamps_begin("draw");
ApiVulkanSample::prepare_frame();
submit_info.commandBufferCount = 1;
submit_info.pCommandBuffers = &draw_cmd_buffers[current_buffer];
VK_CHECK(vkQueueSubmit(queue, 1, &submit_info, VK_NULL_HANDLE));
ApiVulkanSample::submit_frame();
timestamps_end("draw");
}
bool CalibratedTimestamps::prepare(const vkb::ApplicationOptions &options)
{
if (!ApiVulkanSample::prepare(options))
{
return false;
}
camera.type = vkb::CameraType::LookAt;
camera.set_position(glm::vec3(0.0f, 0.0f, -4.0f));
camera.set_rotation(glm::vec3(0.0f, 180.0f, 0.0f));
camera.set_perspective(60.0f, static_cast<float>(width) / static_cast<float>(height), 256.0f, 0.1f);
// Get the optimal time domain as soon as possible
get_device_time_domain();
// Preparations
load_assets();
prepare_uniform_buffers();
prepare_offscreen_buffer();
setup_descriptor_set_layout();
prepare_pipelines();
setup_descriptor_pool();
setup_descriptor_sets();
build_command_buffers();
prepared = true;
return true;
}
void CalibratedTimestamps::render(float delta_time)
{
if (!prepared)
{
return;
}
draw();
if (camera.updated)
{
update_uniform_buffers();
}
}
void CalibratedTimestamps::get_time_domains()
{
// Initialize time domain count:
uint32_t time_domain_count = 0;
// Update time domain count:
VkResult result = vkGetPhysicalDeviceCalibrateableTimeDomainsEXT(get_device().get_gpu().get_handle(), &time_domain_count, nullptr);
if (result == VK_SUCCESS)
{
// Resize time domains vector:
time_domains.resize(time_domain_count);
// Update time_domain vector:
result = vkGetPhysicalDeviceCalibrateableTimeDomainsEXT(get_device().get_gpu().get_handle(), &time_domain_count, time_domains.data());
}
if (time_domain_count > 0)
{
for (VkTimeDomainEXT time_domain : time_domains)
{
// Initialize in-scope time stamp info variable:
VkCalibratedTimestampInfoEXT timestamp_info{};
// Configure timestamp info variable:
timestamp_info.sType = VK_STRUCTURE_TYPE_CALIBRATED_TIMESTAMP_INFO_EXT;
timestamp_info.pNext = nullptr;
timestamp_info.timeDomain = time_domain;
// Push-back timestamp info to timestamps info vector:
timestamps_info.push_back(timestamp_info);
}
// Resize time stamps vector
timestamps.resize(time_domain_count);
// Resize max deviations vector
max_deviations.resize(time_domain_count);
}
is_time_domain_init = ((result == VK_SUCCESS) && (time_domain_count > 0));
}
VkResult CalibratedTimestamps::get_timestamps()
{
// Ensures that time domain exists
if (is_time_domain_init)
{
// Get calibrated timestamps:
return vkGetCalibratedTimestampsEXT(get_device().get_handle(), static_cast<uint32_t>(time_domains.size()), timestamps_info.data(), timestamps.data(), max_deviations.data());
}
return VK_ERROR_UNKNOWN;
}
void CalibratedTimestamps::get_device_time_domain()
{
get_time_domains();
if (is_time_domain_init && (time_domains.size() > 1))
{
auto iterator_device = std::ranges::find(time_domains, VK_TIME_DOMAIN_DEVICE_EXT);
int device_index = static_cast<int>(iterator_device - time_domains.begin());
selected_time_domain.index = device_index;
selected_time_domain.timeDomainEXT = time_domains[device_index];
}
}
void CalibratedTimestamps::timestamps_begin(const std::string &input_tag)
{
// Now to get timestamps
if (get_timestamps() == VK_SUCCESS)
{
std::string tag = input_tag;
if (input_tag.empty())
{
tag = "Unknown";
}
delta_timestamps[tag].tag = input_tag;
delta_timestamps[tag].begin = timestamps[selected_time_domain.index];
}
}
void CalibratedTimestamps::timestamps_end(const std::string &input_tag)
{
if (delta_timestamps.empty())
{
LOGE("Timestamps begin-to-end Fatal Error: Timestamps end is not tagged the same as its begin!")
return; // exits the function here, further calculation is meaningless
}
auto result = get_timestamps();
if (result == VK_SUCCESS)
{
if (delta_timestamps.find(input_tag) != delta_timestamps.end())
{
// Add this data to the last term of delta_timestamps vector
delta_timestamps[input_tag].end = timestamps[selected_time_domain.index];
delta_timestamps[input_tag].delta = delta_timestamps[input_tag].end - delta_timestamps[input_tag].begin;
return;
}
LOGE("timestamps_end called without a found corresponding begin timestamp for {}.", input_tag.c_str())
return;
}
LOGE("get_timestamps failed with {}", vkb::to_string(result))
}
void CalibratedTimestamps::on_update_ui_overlay(vkb::Drawer &drawer)
{
// Timestamps period extracted in runtime
float timestamp_period = get_device().get_gpu().get_properties().limits.timestampPeriod;
drawer.text("Timestamps Period:\n %.1f Nanoseconds", timestamp_period);
// Adjustment Handles:
if (drawer.header("Settings"))
{
if (drawer.combo_box("Object type", &models.object_index, object_names))
{
update_uniform_buffers();
rebuild_command_buffers();
}
if (drawer.checkbox("Bloom", &bloom))
{
rebuild_command_buffers();
}
if (drawer.checkbox("Skybox", &display_skybox))
{
rebuild_command_buffers();
}
}
if (!delta_timestamps.empty())
{
drawer.text("Time Domain Selected:\n %s", time_domain_to_string(selected_time_domain.timeDomainEXT).c_str());
for (const auto &delta_timestamp : delta_timestamps)
{
drawer.text("%s:\n %.1f Microseconds", delta_timestamp.second.tag.c_str(), static_cast<float>(delta_timestamp.second.delta) * timestamp_period * 0.001f);
}
}
}
bool CalibratedTimestamps::resize(uint32_t width, uint32_t height)
{
ApiVulkanSample::resize(width, height);
update_uniform_buffers();
return true;
}
std::unique_ptr<vkb::Application> create_calibrated_timestamps()
{
return std::make_unique<CalibratedTimestamps>();
}
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