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Code cleanup, additional comments

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This commit is contained in:
Sascha Willems 2024-01-20 18:48:55 +01:00
parent df24608511
commit b0719fc5a0
1 changed files with 38 additions and 40 deletions
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68
examples/rayquery/rayquery.cpp
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@ -1,5 +1,8 @@
/*
* Vulkan Example - Using ray queries for hardware accelerated ray tracing queries in a fragment shader
* Vulkan Example - Using ray queries for hardware accelerated ray tracing
*
* Ray queries (aka inline ray tracing) can be used in non-raytracing shaders. This sample makes use of that by
* doing ray traced shadows in a fragment shader
*
* Copyright (C) 2020-2023 by Sascha Willems - www.saschawillems.de
*
@ -21,15 +24,14 @@ public:
glm::mat4 model;
glm::vec3 lightPos;
} uniformData;
vks::Buffer ubo;
vks::Buffer uniformBuffer;
vkglTF::Model scene;
VkPipeline pipeline;
VkPipelineLayout pipelineLayout;
VkDescriptorSet descriptorSet;
VkDescriptorSetLayout descriptorSetLayout;
VkPipeline pipeline{ VK_NULL_HANDLE };
VkPipelineLayout pipelineLayout{ VK_NULL_HANDLE };
VkDescriptorSet descriptorSet{ VK_NULL_HANDLE };
VkDescriptorSetLayout descriptorSetLayout{ VK_NULL_HANDLE };
VulkanRaytracingSample::AccelerationStructure bottomLevelAS{};
VulkanRaytracingSample::AccelerationStructure topLevelAS{};
@ -51,13 +53,15 @@ public:
~VulkanExample()
{
if (device) {
vkDestroyPipeline(device, pipeline, nullptr);
vkDestroyPipelineLayout(device, pipelineLayout, nullptr);
vkDestroyDescriptorSetLayout(device, descriptorSetLayout, nullptr);
ubo.destroy();
uniformBuffer.destroy();
deleteAccelerationStructure(bottomLevelAS);
deleteAccelerationStructure(topLevelAS);
}
}
/*
Create the bottom level acceleration structure contains the scene's actual geometry (vertices, triangles)
@ -283,19 +287,17 @@ public:
scene.loadFromFile(getAssetPath() + "models/vulkanscene_shadow.gltf", vulkanDevice, queue, glTFLoadingFlags);
}
void setupDescriptorPool()
void setupDescriptors()
{
// Pool
std::vector<VkDescriptorPoolSize> poolSizes = {
vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 1),
vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_ACCELERATION_STRUCTURE_KHR, 1)
};
VkDescriptorPoolCreateInfo descriptorPoolInfo = vks::initializers::descriptorPoolCreateInfo(poolSizes, 1);
VK_CHECK_RESULT(vkCreateDescriptorPool(device, &descriptorPoolInfo, nullptr, &descriptorPool));
}
void setupDescriptorSetLayout()
{
// Shared pipeline layout for all pipelines used in this sample
// Layout
std::vector<VkDescriptorSetLayoutBinding> setLayoutBindings = {
// Binding 0 : Vertex shader uniform buffer
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, VK_SHADER_STAGE_VERTEX_BIT, 0),
@ -304,12 +306,8 @@ public:
};
VkDescriptorSetLayoutCreateInfo descriptorLayout = vks::initializers::descriptorSetLayoutCreateInfo(setLayoutBindings);
VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorLayout, nullptr, &descriptorSetLayout));
VkPipelineLayoutCreateInfo pPipelineLayoutCreateInfo = vks::initializers::pipelineLayoutCreateInfo(&descriptorSetLayout, 1);
VK_CHECK_RESULT(vkCreatePipelineLayout(device, &pPipelineLayoutCreateInfo, nullptr, &pipelineLayout));
}
void setupDescriptorSets()
{
// Sets
std::vector<VkWriteDescriptorSet> writeDescriptorSets;
// Debug display
@ -321,9 +319,12 @@ public:
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &allocInfo, &descriptorSet));
writeDescriptorSets = {
// Binding 0 : Vertex shader uniform buffer
vks::initializers::writeDescriptorSet(descriptorSet, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 0, &ubo.descriptor)
vks::initializers::writeDescriptorSet(descriptorSet, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 0, &uniformBuffer.descriptor)
};
// The fragment needs access to the ray tracing acceleration structure, so we pass it as a descriptor
// As this isn't part of Vulkan's core, we need to pass this informationen via pNext chaining
VkWriteDescriptorSetAccelerationStructureKHR descriptorAccelerationStructureInfo = vks::initializers::writeDescriptorSetAccelerationStructureKHR();
descriptorAccelerationStructureInfo.accelerationStructureCount = 1;
descriptorAccelerationStructureInfo.pAccelerationStructures = &topLevelAS.handle;
@ -343,6 +344,11 @@ public:
void preparePipelines()
{
// Layout
VkPipelineLayoutCreateInfo pipelineLayoutCreateInfo = vks::initializers::pipelineLayoutCreateInfo(&descriptorSetLayout, 1);
VK_CHECK_RESULT(vkCreatePipelineLayout(device, &pipelineLayoutCreateInfo, nullptr, &pipelineLayout));
// Pipeline
VkPipelineInputAssemblyStateCreateInfo inputAssemblyStateCI = vks::initializers::pipelineInputAssemblyStateCreateInfo(VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST, 0, VK_FALSE);
VkPipelineRasterizationStateCreateInfo rasterizationStateCI = vks::initializers::pipelineRasterizationStateCreateInfo(VK_POLYGON_MODE_FILL, VK_CULL_MODE_BACK_BIT, VK_FRONT_FACE_COUNTER_CLOCKWISE, 0);
VkPipelineColorBlendAttachmentState blendAttachmentState = vks::initializers::pipelineColorBlendAttachmentState(0xf, VK_FALSE);
@ -381,11 +387,11 @@ public:
VK_CHECK_RESULT(vulkanDevice->createBuffer(
VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
&ubo,
&uniformBuffer,
sizeof(UniformData)));
// Map persistent
VK_CHECK_RESULT(ubo.map());
VK_CHECK_RESULT(uniformBuffer.map());
updateLight();
updateUniformBuffers();
@ -405,7 +411,7 @@ public:
uniformData.view = camera.matrices.view;
uniformData.model = glm::mat4(1.0f);
uniformData.lightPos = lightPos;
memcpy(ubo.mapped, &uniformData, sizeof(UniformData));
memcpy(uniformBuffer.mapped, &uniformData, sizeof(UniformData));
}
void getEnabledFeatures()
@ -432,14 +438,9 @@ public:
void draw()
{
VulkanExampleBase::prepareFrame();
// Command buffer to be submitted to the queue
submitInfo.commandBufferCount = 1;
submitInfo.pCommandBuffers = &drawCmdBuffers[currentBuffer];
// Submit to queue
VK_CHECK_RESULT(vkQueueSubmit(queue, 1, &submitInfo, VK_NULL_HANDLE));
VulkanExampleBase::submitFrame();
}
@ -448,12 +449,10 @@ public:
VulkanRaytracingSample::prepare();
loadAssets();
prepareUniformBuffers();
setupDescriptorSetLayout();
preparePipelines();
createBottomLevelAccelerationStructure();
createTopLevelAccelerationStructure();
setupDescriptorPool();
setupDescriptorSets();
setupDescriptors();
preparePipelines();
buildCommandBuffers();
prepared = true;
}
@ -462,12 +461,11 @@ public:
{
if (!prepared)
return;
draw();
if (!paused || camera.updated)
{
updateLight();
updateUniformBuffers();
if (!paused || camera.updated) {
updateLight();
}
draw();
}
};