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

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/* Copyright (c) 2023-2024, Mobica Limited
*
* 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.
*/
#pragma once
#include <memory>
#include <string>
#include <vector>
#include "api_vulkan_sample.h"
#include "scene_graph/components/pbr_material.h"
class PatchControlPoints : public ApiVulkanSample
{
public:
struct
{
bool tessellation = true;
float tess_level = 3.0f;
} gui_settings;
/* Buffer used in both pipelines */
struct UBOCOMM
{
glm::mat4 projection;
glm::mat4 view;
} ubo_common;
struct UBOTESS
{
float tessellation_level = 3.0f;
} ubo_tess;
VkDescriptorPool descriptor_pool{VK_NULL_HANDLE};
struct
{
VkDescriptorSetLayout static_tessellation{VK_NULL_HANDLE};
VkDescriptorSetLayout dynamic_tessellation{VK_NULL_HANDLE};
} descriptor_set_layouts;
struct
{
VkPipelineLayout static_tessellation{VK_NULL_HANDLE};
VkPipelineLayout dynamic_tessellation{VK_NULL_HANDLE};
} pipeline_layouts;
struct
{
VkDescriptorSet static_tessellation{VK_NULL_HANDLE};
VkDescriptorSet dynamic_tessellation{VK_NULL_HANDLE};
} descriptor_sets;
struct
{
VkPipeline static_tessellation{VK_NULL_HANDLE};
VkPipeline dynamic_tessellation{VK_NULL_HANDLE};
} pipeline;
struct
{
std::unique_ptr<vkb::core::BufferC> common;
std::unique_ptr<vkb::core::BufferC> static_tessellation;
std::unique_ptr<vkb::core::BufferC> dynamic_tessellation;
} uniform_buffers;
struct
{
glm::vec3 direction;
} push_const_block;
std::unique_ptr<vkb::sg::SubMesh> model;
PatchControlPoints();
~PatchControlPoints() override;
void render(float delta_time) override;
void build_command_buffers() override;
bool prepare(const vkb::ApplicationOptions &options) override;
void request_gpu_features(vkb::PhysicalDevice &gpu) override;
void on_update_ui_overlay(vkb::Drawer &drawer) override;
void prepare_uniform_buffers();
void update_uniform_buffers();
void create_pipelines();
void draw();
void load_assets();
void create_descriptor_pool();
void setup_descriptor_set_layout();
void create_descriptor_sets();
};
std::unique_ptr<vkb::VulkanSampleC> create_patch_control_points();