Added samples for ray queries and callable ray tracing shaders
This commit is contained in:
Sascha Willems
parent
08be260685
commit
f79c9705b4
22 changed files with 1391 additions and 33 deletions
|
|
@ -107,9 +107,11 @@ set(EXAMPLES
|
|||
pushconstants
|
||||
pushdescriptors
|
||||
radialblur
|
||||
raytracingbasic
|
||||
rayquery
|
||||
raytracingbasic
|
||||
raytracingcallable
|
||||
raytracingreflections
|
||||
raytracingshadows
|
||||
raytracingshadows
|
||||
renderheadless
|
||||
screenshot
|
||||
shadowmapping
|
||||
|
|
|
|||
507
examples/rayquery/rayquery.cpp
Normal file
507
examples/rayquery/rayquery.cpp
Normal file
|
|
@ -0,0 +1,507 @@
|
|||
/*
|
||||
* Vulkan Example - Using ray queries for hardware accelerated ray tracing queries in a fragment shader
|
||||
*
|
||||
* Copyright (C) 2020 by Sascha Willems - www.saschawillems.de
|
||||
*
|
||||
* This code is licensed under the MIT license (MIT) (http://opensource.org/licenses/MIT)
|
||||
*/
|
||||
|
||||
#include "vulkanexamplebase.h"
|
||||
#include "VulkanglTFModel.h"
|
||||
#include "VulkanRaytracingSample.h"
|
||||
|
||||
#define ENABLE_VALIDATION false
|
||||
|
||||
class VulkanExample : public VulkanRaytracingSample
|
||||
{
|
||||
public:
|
||||
glm::vec3 lightPos = glm::vec3();
|
||||
|
||||
struct UniformData {
|
||||
glm::mat4 projection;
|
||||
glm::mat4 view;
|
||||
glm::mat4 model;
|
||||
glm::vec3 lightPos;
|
||||
} uniformData;
|
||||
vks::Buffer ubo;
|
||||
|
||||
vkglTF::Model scene;
|
||||
|
||||
VkPipeline pipeline;
|
||||
VkPipelineLayout pipelineLayout;
|
||||
|
||||
VkDescriptorSet descriptorSet;
|
||||
VkDescriptorSetLayout descriptorSetLayout;
|
||||
|
||||
VulkanRaytracingSample::AccelerationStructure bottomLevelAS{};
|
||||
VulkanRaytracingSample::AccelerationStructure topLevelAS{};
|
||||
|
||||
VkPhysicalDeviceRayQueryFeaturesKHR enabledRayQueryFeatures{};
|
||||
|
||||
VulkanExample() : VulkanRaytracingSample()
|
||||
{
|
||||
title = "Ray query";
|
||||
camera.type = Camera::CameraType::lookat;
|
||||
camera.setPosition(glm::vec3(0.0f, -0.0f, -20.0f));
|
||||
camera.setRotation(glm::vec3(-15.0f, -390.0f, 0.0f));
|
||||
camera.setPerspective(60.0f, (float)width / (float)height, 1.0f, 256.0f);
|
||||
timerSpeed *= 0.5f;
|
||||
settings.overlay = true;
|
||||
enableExtensions();
|
||||
enabledDeviceExtensions.push_back(VK_KHR_RAY_QUERY_EXTENSION_NAME);
|
||||
}
|
||||
|
||||
~VulkanExample()
|
||||
{
|
||||
vkDestroyPipeline(device, pipeline, nullptr);
|
||||
vkDestroyPipelineLayout(device, pipelineLayout, nullptr);
|
||||
vkDestroyDescriptorSetLayout(device, descriptorSetLayout, nullptr);
|
||||
ubo.destroy();
|
||||
}
|
||||
|
||||
/*
|
||||
Create the bottom level acceleration structure contains the scene's actual geometry (vertices, triangles)
|
||||
*/
|
||||
void createBottomLevelAccelerationStructure()
|
||||
{
|
||||
VkDeviceOrHostAddressConstKHR vertexBufferDeviceAddress{};
|
||||
VkDeviceOrHostAddressConstKHR indexBufferDeviceAddress{};
|
||||
|
||||
vertexBufferDeviceAddress.deviceAddress = getBufferDeviceAddress(scene.vertices.buffer);
|
||||
indexBufferDeviceAddress.deviceAddress = getBufferDeviceAddress(scene.indices.buffer);
|
||||
|
||||
uint32_t numTriangles = static_cast<uint32_t>(scene.indices.count) / 3;
|
||||
uint32_t maxVertex = scene.vertices.count;
|
||||
|
||||
// Build
|
||||
VkAccelerationStructureGeometryKHR accelerationStructureGeometry = vks::initializers::accelerationStructureGeometryKHR();
|
||||
accelerationStructureGeometry.flags = VK_GEOMETRY_OPAQUE_BIT_KHR;
|
||||
accelerationStructureGeometry.geometryType = VK_GEOMETRY_TYPE_TRIANGLES_KHR;
|
||||
accelerationStructureGeometry.geometry.triangles.sType = VK_STRUCTURE_TYPE_ACCELERATION_STRUCTURE_GEOMETRY_TRIANGLES_DATA_KHR;
|
||||
accelerationStructureGeometry.geometry.triangles.vertexFormat = VK_FORMAT_R32G32B32_SFLOAT;
|
||||
accelerationStructureGeometry.geometry.triangles.vertexData = vertexBufferDeviceAddress;
|
||||
accelerationStructureGeometry.geometry.triangles.maxVertex = maxVertex;
|
||||
accelerationStructureGeometry.geometry.triangles.vertexStride = sizeof(vkglTF::Vertex);
|
||||
accelerationStructureGeometry.geometry.triangles.indexType = VK_INDEX_TYPE_UINT32;
|
||||
accelerationStructureGeometry.geometry.triangles.indexData = indexBufferDeviceAddress;
|
||||
accelerationStructureGeometry.geometry.triangles.transformData.deviceAddress = 0;
|
||||
accelerationStructureGeometry.geometry.triangles.transformData.hostAddress = nullptr;
|
||||
|
||||
// Get size info
|
||||
VkAccelerationStructureBuildGeometryInfoKHR accelerationStructureBuildGeometryInfo = vks::initializers::accelerationStructureBuildGeometryInfoKHR();
|
||||
accelerationStructureBuildGeometryInfo.type = VK_ACCELERATION_STRUCTURE_TYPE_BOTTOM_LEVEL_KHR;
|
||||
accelerationStructureBuildGeometryInfo.flags = VK_BUILD_ACCELERATION_STRUCTURE_PREFER_FAST_TRACE_BIT_KHR;
|
||||
accelerationStructureBuildGeometryInfo.geometryCount = 1;
|
||||
accelerationStructureBuildGeometryInfo.pGeometries = &accelerationStructureGeometry;
|
||||
|
||||
VkAccelerationStructureBuildSizesInfoKHR accelerationStructureBuildSizesInfo = vks::initializers::accelerationStructureBuildSizesInfoKHR();
|
||||
vkGetAccelerationStructureBuildSizesKHR(
|
||||
device,
|
||||
VK_ACCELERATION_STRUCTURE_BUILD_TYPE_DEVICE_KHR,
|
||||
&accelerationStructureBuildGeometryInfo,
|
||||
&numTriangles,
|
||||
&accelerationStructureBuildSizesInfo);
|
||||
|
||||
createAccelerationStructure(bottomLevelAS, VK_ACCELERATION_STRUCTURE_TYPE_BOTTOM_LEVEL_KHR, accelerationStructureBuildSizesInfo);
|
||||
|
||||
// Create a small scratch buffer used during build of the bottom level acceleration structure
|
||||
ScratchBuffer scratchBuffer = createScratchBuffer(accelerationStructureBuildSizesInfo.buildScratchSize);
|
||||
|
||||
VkAccelerationStructureBuildGeometryInfoKHR accelerationBuildGeometryInfo = vks::initializers::accelerationStructureBuildGeometryInfoKHR();
|
||||
accelerationBuildGeometryInfo.type = VK_ACCELERATION_STRUCTURE_TYPE_BOTTOM_LEVEL_KHR;
|
||||
accelerationBuildGeometryInfo.flags = VK_BUILD_ACCELERATION_STRUCTURE_PREFER_FAST_TRACE_BIT_KHR;
|
||||
accelerationBuildGeometryInfo.mode = VK_BUILD_ACCELERATION_STRUCTURE_MODE_BUILD_KHR;
|
||||
accelerationBuildGeometryInfo.dstAccelerationStructure = bottomLevelAS.handle;
|
||||
accelerationBuildGeometryInfo.geometryCount = 1;
|
||||
accelerationBuildGeometryInfo.pGeometries = &accelerationStructureGeometry;
|
||||
accelerationBuildGeometryInfo.scratchData.deviceAddress = scratchBuffer.deviceAddress;
|
||||
|
||||
VkAccelerationStructureBuildRangeInfoKHR accelerationStructureBuildRangeInfo{};
|
||||
accelerationStructureBuildRangeInfo.primitiveCount = numTriangles;
|
||||
accelerationStructureBuildRangeInfo.primitiveOffset = 0;
|
||||
accelerationStructureBuildRangeInfo.firstVertex = 0;
|
||||
accelerationStructureBuildRangeInfo.transformOffset = 0;
|
||||
std::vector<VkAccelerationStructureBuildRangeInfoKHR*> accelerationBuildStructureRangeInfos = { &accelerationStructureBuildRangeInfo };
|
||||
|
||||
if (accelerationStructureFeatures.accelerationStructureHostCommands)
|
||||
{
|
||||
// Implementation supports building acceleration structure building on host
|
||||
vkBuildAccelerationStructuresKHR(
|
||||
device,
|
||||
VK_NULL_HANDLE,
|
||||
1,
|
||||
&accelerationBuildGeometryInfo,
|
||||
accelerationBuildStructureRangeInfos.data());
|
||||
}
|
||||
else
|
||||
{
|
||||
// Acceleration structure needs to be build on the device
|
||||
VkCommandBuffer commandBuffer = vulkanDevice->createCommandBuffer(VK_COMMAND_BUFFER_LEVEL_PRIMARY, true);
|
||||
vkCmdBuildAccelerationStructuresKHR(
|
||||
commandBuffer,
|
||||
1,
|
||||
&accelerationBuildGeometryInfo,
|
||||
accelerationBuildStructureRangeInfos.data());
|
||||
vulkanDevice->flushCommandBuffer(commandBuffer, queue);
|
||||
}
|
||||
|
||||
deleteScratchBuffer(scratchBuffer);
|
||||
}
|
||||
|
||||
/*
|
||||
The top level acceleration structure contains the scene's object instances
|
||||
*/
|
||||
void createTopLevelAccelerationStructure()
|
||||
{
|
||||
VkTransformMatrixKHR transformMatrix = {
|
||||
1.0f, 0.0f, 0.0f, 0.0f,
|
||||
0.0f, 1.0f, 0.0f, 0.0f,
|
||||
0.0f, 0.0f, 1.0f, 0.0f };
|
||||
|
||||
VkAccelerationStructureInstanceKHR instance{};
|
||||
instance.transform = transformMatrix;
|
||||
instance.instanceCustomIndex = 0;
|
||||
instance.mask = 0xFF;
|
||||
instance.instanceShaderBindingTableRecordOffset = 0;
|
||||
instance.flags = VK_GEOMETRY_INSTANCE_TRIANGLE_FACING_CULL_DISABLE_BIT_KHR;
|
||||
instance.accelerationStructureReference = bottomLevelAS.deviceAddress;
|
||||
|
||||
// Buffer for instance data
|
||||
vks::Buffer instancesBuffer;
|
||||
VK_CHECK_RESULT(vulkanDevice->createBuffer(
|
||||
VK_BUFFER_USAGE_SHADER_DEVICE_ADDRESS_BIT | VK_BUFFER_USAGE_ACCELERATION_STRUCTURE_BUILD_INPUT_READ_ONLY_BIT_KHR,
|
||||
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
|
||||
&instancesBuffer,
|
||||
sizeof(VkAccelerationStructureInstanceKHR),
|
||||
&instance));
|
||||
|
||||
VkDeviceOrHostAddressConstKHR instanceDataDeviceAddress{};
|
||||
instanceDataDeviceAddress.deviceAddress = getBufferDeviceAddress(instancesBuffer.buffer);
|
||||
|
||||
VkAccelerationStructureGeometryKHR accelerationStructureGeometry = vks::initializers::accelerationStructureGeometryKHR();
|
||||
accelerationStructureGeometry.geometryType = VK_GEOMETRY_TYPE_INSTANCES_KHR;
|
||||
accelerationStructureGeometry.flags = VK_GEOMETRY_OPAQUE_BIT_KHR;
|
||||
accelerationStructureGeometry.geometry.instances.sType = VK_STRUCTURE_TYPE_ACCELERATION_STRUCTURE_GEOMETRY_INSTANCES_DATA_KHR;
|
||||
accelerationStructureGeometry.geometry.instances.arrayOfPointers = VK_FALSE;
|
||||
accelerationStructureGeometry.geometry.instances.data = instanceDataDeviceAddress;
|
||||
|
||||
// Get size info
|
||||
VkAccelerationStructureBuildGeometryInfoKHR accelerationStructureBuildGeometryInfo = vks::initializers::accelerationStructureBuildGeometryInfoKHR();
|
||||
accelerationStructureBuildGeometryInfo.type = VK_ACCELERATION_STRUCTURE_TYPE_TOP_LEVEL_KHR;
|
||||
accelerationStructureBuildGeometryInfo.flags = VK_BUILD_ACCELERATION_STRUCTURE_PREFER_FAST_TRACE_BIT_KHR;
|
||||
accelerationStructureBuildGeometryInfo.geometryCount = 1;
|
||||
accelerationStructureBuildGeometryInfo.pGeometries = &accelerationStructureGeometry;
|
||||
|
||||
uint32_t primitive_count = 1;
|
||||
|
||||
VkAccelerationStructureBuildSizesInfoKHR accelerationStructureBuildSizesInfo = vks::initializers::accelerationStructureBuildSizesInfoKHR();
|
||||
vkGetAccelerationStructureBuildSizesKHR(
|
||||
device,
|
||||
VK_ACCELERATION_STRUCTURE_BUILD_TYPE_DEVICE_KHR,
|
||||
&accelerationStructureBuildGeometryInfo,
|
||||
&primitive_count,
|
||||
&accelerationStructureBuildSizesInfo);
|
||||
|
||||
createAccelerationStructure(topLevelAS, VK_ACCELERATION_STRUCTURE_TYPE_TOP_LEVEL_KHR, accelerationStructureBuildSizesInfo);
|
||||
|
||||
// Create a small scratch buffer used during build of the top level acceleration structure
|
||||
ScratchBuffer scratchBuffer = createScratchBuffer(accelerationStructureBuildSizesInfo.buildScratchSize);
|
||||
|
||||
VkAccelerationStructureBuildGeometryInfoKHR accelerationBuildGeometryInfo = vks::initializers::accelerationStructureBuildGeometryInfoKHR();
|
||||
accelerationBuildGeometryInfo.type = VK_ACCELERATION_STRUCTURE_TYPE_TOP_LEVEL_KHR;
|
||||
accelerationBuildGeometryInfo.flags = VK_BUILD_ACCELERATION_STRUCTURE_PREFER_FAST_TRACE_BIT_KHR;
|
||||
accelerationBuildGeometryInfo.mode = VK_BUILD_ACCELERATION_STRUCTURE_MODE_BUILD_KHR;
|
||||
accelerationBuildGeometryInfo.dstAccelerationStructure = topLevelAS.handle;
|
||||
accelerationBuildGeometryInfo.geometryCount = 1;
|
||||
accelerationBuildGeometryInfo.pGeometries = &accelerationStructureGeometry;
|
||||
accelerationBuildGeometryInfo.scratchData.deviceAddress = scratchBuffer.deviceAddress;
|
||||
|
||||
VkAccelerationStructureBuildRangeInfoKHR accelerationStructureBuildRangeInfo{};
|
||||
accelerationStructureBuildRangeInfo.primitiveCount = 1;
|
||||
accelerationStructureBuildRangeInfo.primitiveOffset = 0;
|
||||
accelerationStructureBuildRangeInfo.firstVertex = 0;
|
||||
accelerationStructureBuildRangeInfo.transformOffset = 0;
|
||||
std::vector<VkAccelerationStructureBuildRangeInfoKHR*> accelerationBuildStructureRangeInfos = { &accelerationStructureBuildRangeInfo };
|
||||
|
||||
if (accelerationStructureFeatures.accelerationStructureHostCommands)
|
||||
{
|
||||
// Implementation supports building acceleration structure building on host
|
||||
vkBuildAccelerationStructuresKHR(
|
||||
device,
|
||||
VK_NULL_HANDLE,
|
||||
1,
|
||||
&accelerationBuildGeometryInfo,
|
||||
accelerationBuildStructureRangeInfos.data());
|
||||
}
|
||||
else
|
||||
{
|
||||
// Acceleration structure needs to be build on the device
|
||||
VkCommandBuffer commandBuffer = vulkanDevice->createCommandBuffer(VK_COMMAND_BUFFER_LEVEL_PRIMARY, true);
|
||||
vkCmdBuildAccelerationStructuresKHR(
|
||||
commandBuffer,
|
||||
1,
|
||||
&accelerationBuildGeometryInfo,
|
||||
accelerationBuildStructureRangeInfos.data());
|
||||
vulkanDevice->flushCommandBuffer(commandBuffer, queue);
|
||||
}
|
||||
|
||||
deleteScratchBuffer(scratchBuffer);
|
||||
instancesBuffer.destroy();
|
||||
}
|
||||
|
||||
void buildCommandBuffers()
|
||||
{
|
||||
VkCommandBufferBeginInfo cmdBufInfo = vks::initializers::commandBufferBeginInfo();
|
||||
|
||||
VkClearValue clearValues[2];
|
||||
VkViewport viewport;
|
||||
VkRect2D scissor;
|
||||
|
||||
for (int32_t i = 0; i < drawCmdBuffers.size(); ++i)
|
||||
{
|
||||
VK_CHECK_RESULT(vkBeginCommandBuffer(drawCmdBuffers[i], &cmdBufInfo));
|
||||
|
||||
/*
|
||||
Note: Explicit synchronization is not required between the render pass, as this is done implicit via sub pass dependencies
|
||||
*/
|
||||
|
||||
/*
|
||||
Second pass: Scene rendering with applied shadow map
|
||||
*/
|
||||
|
||||
clearValues[0].color = defaultClearColor;
|
||||
clearValues[1].depthStencil = { 1.0f, 0 };
|
||||
|
||||
VkRenderPassBeginInfo renderPassBeginInfo = vks::initializers::renderPassBeginInfo();
|
||||
renderPassBeginInfo.renderPass = renderPass;
|
||||
renderPassBeginInfo.framebuffer = frameBuffers[i];
|
||||
renderPassBeginInfo.renderArea.extent.width = width;
|
||||
renderPassBeginInfo.renderArea.extent.height = height;
|
||||
renderPassBeginInfo.clearValueCount = 2;
|
||||
renderPassBeginInfo.pClearValues = clearValues;
|
||||
|
||||
vkCmdBeginRenderPass(drawCmdBuffers[i], &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);
|
||||
|
||||
viewport = vks::initializers::viewport((float)width, (float)height, 0.0f, 1.0f);
|
||||
vkCmdSetViewport(drawCmdBuffers[i], 0, 1, &viewport);
|
||||
|
||||
scissor = vks::initializers::rect2D(width, height, 0, 0);
|
||||
vkCmdSetScissor(drawCmdBuffers[i], 0, 1, &scissor);
|
||||
|
||||
// 3D scene
|
||||
vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSet, 0, nullptr);
|
||||
vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline);
|
||||
scene.draw(drawCmdBuffers[i]);
|
||||
|
||||
drawUI(drawCmdBuffers[i]);
|
||||
|
||||
vkCmdEndRenderPass(drawCmdBuffers[i]);
|
||||
|
||||
VK_CHECK_RESULT(vkEndCommandBuffer(drawCmdBuffers[i]));
|
||||
}
|
||||
}
|
||||
|
||||
void loadAssets()
|
||||
{
|
||||
vkglTF::memoryPropertyFlags = VK_BUFFER_USAGE_ACCELERATION_STRUCTURE_BUILD_INPUT_READ_ONLY_BIT_KHR | VK_BUFFER_USAGE_SHADER_DEVICE_ADDRESS_BIT | VK_BUFFER_USAGE_STORAGE_BUFFER_BIT;
|
||||
const uint32_t glTFLoadingFlags = vkglTF::FileLoadingFlags::PreTransformVertices | vkglTF::FileLoadingFlags::PreMultiplyVertexColors | vkglTF::FileLoadingFlags::FlipY;
|
||||
scene.loadFromFile(getAssetPath() + "models/vulkanscene_shadow.gltf", vulkanDevice, queue, glTFLoadingFlags);
|
||||
//const uint32_t glTFLoadingFlags = vkglTF::FileLoadingFlags::PreTransformVertices | vkglTF::FileLoadingFlags::PreMultiplyVertexColors | vkglTF::FileLoadingFlags::FlipY;
|
||||
//scenes.resize(2);
|
||||
//scenes[0].loadFromFile(getAssetPath() + "models/vulkanscene_shadow.gltf", vulkanDevice, queue, glTFLoadingFlags);
|
||||
//scenes[1].loadFromFile(getAssetPath() + "models/samplescene.gltf", vulkanDevice, queue, glTFLoadingFlags);
|
||||
//sceneNames = {"Vulkan scene", "Teapots and pillars" };
|
||||
}
|
||||
|
||||
void setupDescriptorPool()
|
||||
{
|
||||
std::vector<VkDescriptorPoolSize> poolSizes = {
|
||||
vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 3),
|
||||
vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 3),
|
||||
vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_ACCELERATION_STRUCTURE_KHR, 3)
|
||||
};
|
||||
VkDescriptorPoolCreateInfo descriptorPoolInfo = vks::initializers::descriptorPoolCreateInfo(poolSizes, 3);
|
||||
VK_CHECK_RESULT(vkCreateDescriptorPool(device, &descriptorPoolInfo, nullptr, &descriptorPool));
|
||||
}
|
||||
|
||||
void setupDescriptorSetLayout()
|
||||
{
|
||||
// Shared pipeline layout for all pipelines used in this sample
|
||||
std::vector<VkDescriptorSetLayoutBinding> setLayoutBindings = {
|
||||
// Binding 0 : Vertex shader uniform buffer
|
||||
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, VK_SHADER_STAGE_VERTEX_BIT, 0),
|
||||
// Binding 1 : Fragment shader image sampler (shadow map)
|
||||
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, VK_SHADER_STAGE_FRAGMENT_BIT, 1),
|
||||
// Binding 2: Acceleration structure
|
||||
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_ACCELERATION_STRUCTURE_KHR, VK_SHADER_STAGE_FRAGMENT_BIT, 2),
|
||||
};
|
||||
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()
|
||||
{
|
||||
std::vector<VkWriteDescriptorSet> writeDescriptorSets;
|
||||
|
||||
// Debug display
|
||||
VkDescriptorSetAllocateInfo allocInfo = vks::initializers::descriptorSetAllocateInfo(descriptorPool, &descriptorSetLayout, 1);
|
||||
|
||||
vkUpdateDescriptorSets(device, writeDescriptorSets.size(), writeDescriptorSets.data(), 0, nullptr);
|
||||
|
||||
// Scene rendering with shadow map applied
|
||||
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)
|
||||
};
|
||||
|
||||
VkWriteDescriptorSetAccelerationStructureKHR descriptorAccelerationStructureInfo = vks::initializers::writeDescriptorSetAccelerationStructureKHR();
|
||||
descriptorAccelerationStructureInfo.accelerationStructureCount = 1;
|
||||
descriptorAccelerationStructureInfo.pAccelerationStructures = &topLevelAS.handle;
|
||||
|
||||
VkWriteDescriptorSet accelerationStructureWrite{};
|
||||
accelerationStructureWrite.sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
|
||||
// The specialized acceleration structure descriptor has to be chained
|
||||
accelerationStructureWrite.pNext = &descriptorAccelerationStructureInfo;
|
||||
accelerationStructureWrite.dstSet = descriptorSet;
|
||||
accelerationStructureWrite.dstBinding = 2;
|
||||
accelerationStructureWrite.descriptorCount = 1;
|
||||
accelerationStructureWrite.descriptorType = VK_DESCRIPTOR_TYPE_ACCELERATION_STRUCTURE_KHR;
|
||||
|
||||
writeDescriptorSets.push_back(accelerationStructureWrite);
|
||||
vkUpdateDescriptorSets(device, writeDescriptorSets.size(), writeDescriptorSets.data(), 0, nullptr);
|
||||
}
|
||||
|
||||
void preparePipelines()
|
||||
{
|
||||
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);
|
||||
VkPipelineColorBlendStateCreateInfo colorBlendStateCI = vks::initializers::pipelineColorBlendStateCreateInfo(1, &blendAttachmentState);
|
||||
VkPipelineDepthStencilStateCreateInfo depthStencilStateCI = vks::initializers::pipelineDepthStencilStateCreateInfo(VK_TRUE, VK_TRUE, VK_COMPARE_OP_LESS_OR_EQUAL);
|
||||
VkPipelineViewportStateCreateInfo viewportStateCI = vks::initializers::pipelineViewportStateCreateInfo(1, 1, 0);
|
||||
VkPipelineMultisampleStateCreateInfo multisampleStateCI = vks::initializers::pipelineMultisampleStateCreateInfo(VK_SAMPLE_COUNT_1_BIT, 0);
|
||||
std::vector<VkDynamicState> dynamicStateEnables = { VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR };
|
||||
VkPipelineDynamicStateCreateInfo dynamicStateCI = vks::initializers::pipelineDynamicStateCreateInfo(dynamicStateEnables.data(), dynamicStateEnables.size(), 0);
|
||||
std::array<VkPipelineShaderStageCreateInfo, 2> shaderStages;
|
||||
|
||||
VkGraphicsPipelineCreateInfo pipelineCI = vks::initializers::pipelineCreateInfo(pipelineLayout, renderPass, 0);
|
||||
pipelineCI.pInputAssemblyState = &inputAssemblyStateCI;
|
||||
pipelineCI.pRasterizationState = &rasterizationStateCI;
|
||||
pipelineCI.pColorBlendState = &colorBlendStateCI;
|
||||
pipelineCI.pMultisampleState = &multisampleStateCI;
|
||||
pipelineCI.pViewportState = &viewportStateCI;
|
||||
pipelineCI.pDepthStencilState = &depthStencilStateCI;
|
||||
pipelineCI.pDynamicState = &dynamicStateCI;
|
||||
pipelineCI.stageCount = shaderStages.size();
|
||||
pipelineCI.pStages = shaderStages.data();
|
||||
|
||||
// Scene rendering with ray traced shadows applied
|
||||
pipelineCI.pVertexInputState = vkglTF::Vertex::getPipelineVertexInputState({ vkglTF::VertexComponent::Position, vkglTF::VertexComponent::UV, vkglTF::VertexComponent::Color, vkglTF::VertexComponent::Normal });
|
||||
rasterizationStateCI.cullMode = VK_CULL_MODE_BACK_BIT;
|
||||
shaderStages[0] = loadShader(getShadersPath() + "rayquery/scene.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
|
||||
shaderStages[1] = loadShader(getShadersPath() + "rayquery/scene.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
|
||||
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCI, nullptr, &pipeline));
|
||||
}
|
||||
|
||||
|
||||
// Prepare and initialize uniform buffer containing shader uniforms
|
||||
void prepareUniformBuffers()
|
||||
{
|
||||
// Scene vertex shader uniform buffer block
|
||||
VK_CHECK_RESULT(vulkanDevice->createBuffer(
|
||||
VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
|
||||
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
|
||||
&ubo,
|
||||
sizeof(UniformData)));
|
||||
|
||||
// Map persistent
|
||||
VK_CHECK_RESULT(ubo.map());
|
||||
|
||||
updateLight();
|
||||
updateUniformBuffers();
|
||||
}
|
||||
|
||||
void updateLight()
|
||||
{
|
||||
// Animate the light source
|
||||
lightPos.x = cos(glm::radians(timer * 360.0f)) * 40.0f;
|
||||
lightPos.y = -50.0f + sin(glm::radians(timer * 360.0f)) * 20.0f;
|
||||
lightPos.z = 25.0f + sin(glm::radians(timer * 360.0f)) * 5.0f;
|
||||
}
|
||||
|
||||
void updateUniformBuffers()
|
||||
{
|
||||
uniformData.projection = camera.matrices.perspective;
|
||||
uniformData.view = camera.matrices.view;
|
||||
uniformData.model = glm::mat4(1.0f);
|
||||
uniformData.lightPos = lightPos;
|
||||
memcpy(ubo.mapped, &uniformData, sizeof(UniformData));
|
||||
}
|
||||
|
||||
void getEnabledFeatures()
|
||||
{
|
||||
// Enable features required for ray tracing using feature chaining via pNext
|
||||
enabledBufferDeviceAddresFeatures.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_BUFFER_DEVICE_ADDRESS_FEATURES;
|
||||
enabledBufferDeviceAddresFeatures.bufferDeviceAddress = VK_TRUE;
|
||||
|
||||
enabledRayTracingPipelineFeatures.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_RAY_TRACING_PIPELINE_FEATURES_KHR;
|
||||
enabledRayTracingPipelineFeatures.rayTracingPipeline = VK_TRUE;
|
||||
enabledRayTracingPipelineFeatures.pNext = &enabledBufferDeviceAddresFeatures;
|
||||
|
||||
enabledAccelerationStructureFeatures.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_ACCELERATION_STRUCTURE_FEATURES_KHR;
|
||||
enabledAccelerationStructureFeatures.accelerationStructure = VK_TRUE;
|
||||
enabledAccelerationStructureFeatures.pNext = &enabledRayTracingPipelineFeatures;
|
||||
|
||||
enabledRayQueryFeatures.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_RAY_QUERY_FEATURES_KHR;
|
||||
enabledRayQueryFeatures.rayQuery = VK_TRUE;
|
||||
enabledRayQueryFeatures.pNext = &enabledAccelerationStructureFeatures;
|
||||
|
||||
deviceCreatepNextChain = &enabledRayQueryFeatures;
|
||||
}
|
||||
|
||||
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();
|
||||
}
|
||||
|
||||
void prepare()
|
||||
{
|
||||
VulkanRaytracingSample::prepare();
|
||||
loadAssets();
|
||||
prepareUniformBuffers();
|
||||
setupDescriptorSetLayout();
|
||||
preparePipelines();
|
||||
createBottomLevelAccelerationStructure();
|
||||
createTopLevelAccelerationStructure();
|
||||
setupDescriptorPool();
|
||||
setupDescriptorSets();
|
||||
buildCommandBuffers();
|
||||
prepared = true;
|
||||
}
|
||||
|
||||
virtual void render()
|
||||
{
|
||||
if (!prepared)
|
||||
return;
|
||||
draw();
|
||||
if (!paused || camera.updated)
|
||||
{
|
||||
updateLight();
|
||||
updateUniformBuffers();
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
VULKAN_EXAMPLE_MAIN()
|
||||
670
examples/raytracingcallable/raytracingcallable.cpp
Normal file
670
examples/raytracingcallable/raytracingcallable.cpp
Normal file
|
|
@ -0,0 +1,670 @@
|
|||
/*
|
||||
* Vulkan Example - Hardware accelerated ray tracing callable shaders example
|
||||
*
|
||||
* Renders a complex scene using multiple hit and miss shaders for implementing shadows
|
||||
*
|
||||
* Copyright (C) by Sascha Willems - www.saschawillems.de
|
||||
*
|
||||
* This code is licensed under the MIT license (MIT) (http://opensource.org/licenses/MIT)
|
||||
*/
|
||||
|
||||
#include "VulkanRaytracingSample.h"
|
||||
|
||||
class VulkanExample : public VulkanRaytracingSample
|
||||
{
|
||||
public:
|
||||
AccelerationStructure bottomLevelAS;
|
||||
AccelerationStructure topLevelAS;
|
||||
|
||||
std::vector<VkRayTracingShaderGroupCreateInfoKHR> shaderGroups{};
|
||||
struct ShaderBindingTables {
|
||||
ShaderBindingTable raygen;
|
||||
ShaderBindingTable miss;
|
||||
ShaderBindingTable hit;
|
||||
ShaderBindingTable callable;
|
||||
} shaderBindingTables;
|
||||
|
||||
struct UniformData {
|
||||
glm::mat4 viewInverse;
|
||||
glm::mat4 projInverse;
|
||||
} uniformData;
|
||||
vks::Buffer ubo;
|
||||
|
||||
VkPipeline pipeline;
|
||||
VkPipelineLayout pipelineLayout;
|
||||
VkDescriptorSet descriptorSet;
|
||||
VkDescriptorSetLayout descriptorSetLayout;
|
||||
|
||||
vks::Buffer vertexBuffer;
|
||||
vks::Buffer indexBuffer;
|
||||
vks::Buffer transformBuffer;
|
||||
|
||||
uint32_t objectCount = 3;
|
||||
|
||||
// This sample is derived from an extended base class that saves most of the ray tracing setup boiler plate
|
||||
VulkanExample() : VulkanRaytracingSample()
|
||||
{
|
||||
title = "Ray tracing callable shaders";
|
||||
settings.overlay = false;
|
||||
timerSpeed *= 0.25f;
|
||||
camera.type = Camera::CameraType::lookat;
|
||||
camera.setPerspective(60.0f, (float)width / (float)height, 0.1f, 512.0f);
|
||||
camera.setRotation(glm::vec3(0.0f, 0.0f, 0.0f));
|
||||
camera.setTranslation(glm::vec3(0.0f, 0.0f, -10.0f));
|
||||
enableExtensions();
|
||||
}
|
||||
|
||||
~VulkanExample()
|
||||
{
|
||||
vkDestroyPipeline(device, pipeline, nullptr);
|
||||
vkDestroyPipelineLayout(device, pipelineLayout, nullptr);
|
||||
vkDestroyDescriptorSetLayout(device, descriptorSetLayout, nullptr);
|
||||
deleteStorageImage();
|
||||
deleteAccelerationStructure(bottomLevelAS);
|
||||
deleteAccelerationStructure(topLevelAS);
|
||||
shaderBindingTables.raygen.destroy();
|
||||
shaderBindingTables.miss.destroy();
|
||||
shaderBindingTables.hit.destroy();
|
||||
shaderBindingTables.callable.destroy();
|
||||
ubo.destroy();
|
||||
}
|
||||
|
||||
/*
|
||||
Create the bottom level acceleration structure contains the scene's actual geometry (vertices, triangles)
|
||||
*/
|
||||
void createBottomLevelAccelerationStructure()
|
||||
{
|
||||
// Setup vertices for a single triangle
|
||||
struct Vertex {
|
||||
float pos[3];
|
||||
};
|
||||
std::vector<Vertex> vertices = {
|
||||
{ { 1.0f, 1.0f, 0.0f } },
|
||||
{ { -1.0f, 1.0f, 0.0f } },
|
||||
{ { 0.0f, -1.0f, 0.0f } }
|
||||
};
|
||||
|
||||
// Setup indices
|
||||
std::vector<uint32_t> indices = { 0, 1, 2 };
|
||||
uint32_t indexCount = static_cast<uint32_t>(indices.size());
|
||||
|
||||
// Setup transform matrices for the geometries in the bottom level AS
|
||||
std::vector<VkTransformMatrixKHR> transformMatrices(objectCount);
|
||||
for (uint32_t i = 0; i < objectCount; i++) {
|
||||
transformMatrices[i] = {
|
||||
1.0f, 0.0f, 0.0f, (float)i * 3.0f - 3.0f,
|
||||
0.0f, 1.0f, 0.0f, 0.0f,
|
||||
0.0f, 0.0f, 1.0f, 0.0f
|
||||
};
|
||||
}
|
||||
// Transform buffer
|
||||
VK_CHECK_RESULT(vulkanDevice->createBuffer(
|
||||
VK_BUFFER_USAGE_SHADER_DEVICE_ADDRESS_BIT | VK_BUFFER_USAGE_ACCELERATION_STRUCTURE_BUILD_INPUT_READ_ONLY_BIT_KHR,
|
||||
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
|
||||
&transformBuffer,
|
||||
objectCount * sizeof(VkTransformMatrixKHR),
|
||||
transformMatrices.data()));
|
||||
|
||||
// Create buffers
|
||||
// For the sake of simplicity we won't stage the vertex data to the GPU memory
|
||||
// Vertex buffer
|
||||
VK_CHECK_RESULT(vulkanDevice->createBuffer(
|
||||
VK_BUFFER_USAGE_SHADER_DEVICE_ADDRESS_BIT | VK_BUFFER_USAGE_ACCELERATION_STRUCTURE_BUILD_INPUT_READ_ONLY_BIT_KHR | VK_BUFFER_USAGE_STORAGE_BUFFER_BIT,
|
||||
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
|
||||
&vertexBuffer,
|
||||
vertices.size() * sizeof(Vertex),
|
||||
vertices.data()));
|
||||
// Index buffer
|
||||
VK_CHECK_RESULT(vulkanDevice->createBuffer(
|
||||
VK_BUFFER_USAGE_SHADER_DEVICE_ADDRESS_BIT | VK_BUFFER_USAGE_ACCELERATION_STRUCTURE_BUILD_INPUT_READ_ONLY_BIT_KHR | VK_BUFFER_USAGE_STORAGE_BUFFER_BIT,
|
||||
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
|
||||
&indexBuffer,
|
||||
indices.size() * sizeof(uint32_t),
|
||||
indices.data()));
|
||||
|
||||
VkDeviceOrHostAddressConstKHR vertexBufferDeviceAddress{};
|
||||
VkDeviceOrHostAddressConstKHR indexBufferDeviceAddress{};
|
||||
VkDeviceOrHostAddressConstKHR transformBufferDeviceAddress{};
|
||||
|
||||
vertexBufferDeviceAddress.deviceAddress = getBufferDeviceAddress(vertexBuffer.buffer);
|
||||
indexBufferDeviceAddress.deviceAddress = getBufferDeviceAddress(indexBuffer.buffer);
|
||||
transformBufferDeviceAddress.deviceAddress = getBufferDeviceAddress(transformBuffer.buffer);
|
||||
|
||||
uint32_t numTriangles = 1;
|
||||
|
||||
// Our scene will consist of three different triangles, that'll be distinguished in the shader via gl_GeometryIndexEXT, so we add three geometries to the bottom level AS
|
||||
std::vector<uint32_t> geometryCounts;
|
||||
std::vector<VkAccelerationStructureGeometryKHR> accelerationStructureGeometries;
|
||||
for (uint32_t i = 0; i < objectCount; i++) {
|
||||
VkAccelerationStructureGeometryKHR accelerationStructureGeometry = vks::initializers::accelerationStructureGeometryKHR();
|
||||
accelerationStructureGeometry.flags = VK_GEOMETRY_OPAQUE_BIT_KHR;
|
||||
accelerationStructureGeometry.geometryType = VK_GEOMETRY_TYPE_TRIANGLES_KHR;
|
||||
accelerationStructureGeometry.geometry.triangles.sType = VK_STRUCTURE_TYPE_ACCELERATION_STRUCTURE_GEOMETRY_TRIANGLES_DATA_KHR;
|
||||
accelerationStructureGeometry.geometry.triangles.vertexFormat = VK_FORMAT_R32G32B32_SFLOAT;
|
||||
accelerationStructureGeometry.geometry.triangles.vertexData = vertexBufferDeviceAddress;
|
||||
accelerationStructureGeometry.geometry.triangles.maxVertex = 3;
|
||||
accelerationStructureGeometry.geometry.triangles.vertexStride = sizeof(Vertex);
|
||||
accelerationStructureGeometry.geometry.triangles.indexType = VK_INDEX_TYPE_UINT32;
|
||||
accelerationStructureGeometry.geometry.triangles.indexData = indexBufferDeviceAddress;
|
||||
accelerationStructureGeometry.geometry.triangles.transformData = transformBufferDeviceAddress;
|
||||
accelerationStructureGeometries.push_back(accelerationStructureGeometry);
|
||||
geometryCounts.push_back(1);
|
||||
}
|
||||
|
||||
// Get size info
|
||||
VkAccelerationStructureBuildGeometryInfoKHR accelerationStructureBuildGeometryInfo = vks::initializers::accelerationStructureBuildGeometryInfoKHR();
|
||||
accelerationStructureBuildGeometryInfo.type = VK_ACCELERATION_STRUCTURE_TYPE_BOTTOM_LEVEL_KHR;
|
||||
accelerationStructureBuildGeometryInfo.flags = VK_BUILD_ACCELERATION_STRUCTURE_PREFER_FAST_TRACE_BIT_KHR;
|
||||
accelerationStructureBuildGeometryInfo.geometryCount = static_cast<uint32_t>(accelerationStructureGeometries.size());
|
||||
accelerationStructureBuildGeometryInfo.pGeometries = accelerationStructureGeometries.data();
|
||||
|
||||
VkAccelerationStructureBuildSizesInfoKHR accelerationStructureBuildSizesInfo = vks::initializers::accelerationStructureBuildSizesInfoKHR();
|
||||
vkGetAccelerationStructureBuildSizesKHR(
|
||||
device,
|
||||
VK_ACCELERATION_STRUCTURE_BUILD_TYPE_DEVICE_KHR,
|
||||
&accelerationStructureBuildGeometryInfo,
|
||||
geometryCounts.data(),
|
||||
&accelerationStructureBuildSizesInfo);
|
||||
|
||||
createAccelerationStructure(bottomLevelAS, VK_ACCELERATION_STRUCTURE_TYPE_BOTTOM_LEVEL_KHR, accelerationStructureBuildSizesInfo);
|
||||
|
||||
// Create a small scratch buffer used during build of the bottom level acceleration structure
|
||||
ScratchBuffer scratchBuffer = createScratchBuffer(accelerationStructureBuildSizesInfo.buildScratchSize);
|
||||
|
||||
VkAccelerationStructureBuildGeometryInfoKHR accelerationBuildGeometryInfo = vks::initializers::accelerationStructureBuildGeometryInfoKHR();
|
||||
accelerationBuildGeometryInfo.type = VK_ACCELERATION_STRUCTURE_TYPE_BOTTOM_LEVEL_KHR;
|
||||
accelerationBuildGeometryInfo.flags = VK_BUILD_ACCELERATION_STRUCTURE_PREFER_FAST_TRACE_BIT_KHR;
|
||||
accelerationBuildGeometryInfo.mode = VK_BUILD_ACCELERATION_STRUCTURE_MODE_BUILD_KHR;
|
||||
accelerationBuildGeometryInfo.dstAccelerationStructure = bottomLevelAS.handle;
|
||||
accelerationBuildGeometryInfo.geometryCount = static_cast<uint32_t>(accelerationStructureGeometries.size());
|
||||
accelerationBuildGeometryInfo.pGeometries = accelerationStructureGeometries.data();
|
||||
accelerationBuildGeometryInfo.scratchData.deviceAddress = scratchBuffer.deviceAddress;
|
||||
|
||||
std::vector<VkAccelerationStructureBuildRangeInfoKHR> accelerationStructureBuildRangeInfos{};
|
||||
for (uint32_t i = 0; i < objectCount; i++) {
|
||||
VkAccelerationStructureBuildRangeInfoKHR accelerationStructureBuildRangeInfo{};
|
||||
accelerationStructureBuildRangeInfo.primitiveCount = numTriangles;
|
||||
accelerationStructureBuildRangeInfo.primitiveOffset = 0;
|
||||
accelerationStructureBuildRangeInfo.firstVertex = 0;
|
||||
accelerationStructureBuildRangeInfo.transformOffset = i * sizeof(VkTransformMatrixKHR);
|
||||
accelerationStructureBuildRangeInfos.push_back(accelerationStructureBuildRangeInfo);
|
||||
}
|
||||
std::vector<VkAccelerationStructureBuildRangeInfoKHR*> accelerationBuildStructureRangeInfos = { &accelerationStructureBuildRangeInfos[0], &accelerationStructureBuildRangeInfos[1], &accelerationStructureBuildRangeInfos[2] };
|
||||
|
||||
if (accelerationStructureFeatures.accelerationStructureHostCommands)
|
||||
{
|
||||
// Implementation supports building acceleration structure building on host
|
||||
vkBuildAccelerationStructuresKHR(
|
||||
device,
|
||||
VK_NULL_HANDLE,
|
||||
1,
|
||||
&accelerationBuildGeometryInfo,
|
||||
accelerationBuildStructureRangeInfos.data());
|
||||
}
|
||||
else
|
||||
{
|
||||
// Acceleration structure needs to be build on the device
|
||||
VkCommandBuffer commandBuffer = vulkanDevice->createCommandBuffer(VK_COMMAND_BUFFER_LEVEL_PRIMARY, true);
|
||||
vkCmdBuildAccelerationStructuresKHR(
|
||||
commandBuffer,
|
||||
1,
|
||||
&accelerationBuildGeometryInfo,
|
||||
accelerationBuildStructureRangeInfos.data());
|
||||
vulkanDevice->flushCommandBuffer(commandBuffer, queue);
|
||||
}
|
||||
|
||||
deleteScratchBuffer(scratchBuffer);
|
||||
}
|
||||
|
||||
/*
|
||||
The top level acceleration structure contains the scene's object instances
|
||||
*/
|
||||
void createTopLevelAccelerationStructure()
|
||||
{
|
||||
VkTransformMatrixKHR transformMatrix = {
|
||||
1.0f, 0.0f, 0.0f, 0.0f,
|
||||
0.0f, 1.0f, 0.0f, 0.0f,
|
||||
0.0f, 0.0f, 1.0f, 0.0f };
|
||||
|
||||
VkAccelerationStructureInstanceKHR instance{};
|
||||
instance.transform = transformMatrix;
|
||||
instance.instanceCustomIndex = 0;
|
||||
instance.mask = 0xFF;
|
||||
instance.instanceShaderBindingTableRecordOffset = 0;
|
||||
instance.flags = VK_GEOMETRY_INSTANCE_TRIANGLE_FACING_CULL_DISABLE_BIT_KHR;
|
||||
instance.accelerationStructureReference = bottomLevelAS.deviceAddress;
|
||||
|
||||
// Buffer for instance data
|
||||
vks::Buffer instancesBuffer;
|
||||
VK_CHECK_RESULT(vulkanDevice->createBuffer(
|
||||
VK_BUFFER_USAGE_SHADER_DEVICE_ADDRESS_BIT | VK_BUFFER_USAGE_ACCELERATION_STRUCTURE_BUILD_INPUT_READ_ONLY_BIT_KHR,
|
||||
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
|
||||
&instancesBuffer,
|
||||
sizeof(VkAccelerationStructureInstanceKHR),
|
||||
&instance));
|
||||
|
||||
VkDeviceOrHostAddressConstKHR instanceDataDeviceAddress{};
|
||||
instanceDataDeviceAddress.deviceAddress = getBufferDeviceAddress(instancesBuffer.buffer);
|
||||
|
||||
VkAccelerationStructureGeometryKHR accelerationStructureGeometry = vks::initializers::accelerationStructureGeometryKHR();
|
||||
accelerationStructureGeometry.geometryType = VK_GEOMETRY_TYPE_INSTANCES_KHR;
|
||||
accelerationStructureGeometry.flags = VK_GEOMETRY_OPAQUE_BIT_KHR;
|
||||
accelerationStructureGeometry.geometry.instances.sType = VK_STRUCTURE_TYPE_ACCELERATION_STRUCTURE_GEOMETRY_INSTANCES_DATA_KHR;
|
||||
accelerationStructureGeometry.geometry.instances.arrayOfPointers = VK_FALSE;
|
||||
accelerationStructureGeometry.geometry.instances.data = instanceDataDeviceAddress;
|
||||
|
||||
// Get size info
|
||||
VkAccelerationStructureBuildGeometryInfoKHR accelerationStructureBuildGeometryInfo = vks::initializers::accelerationStructureBuildGeometryInfoKHR();
|
||||
accelerationStructureBuildGeometryInfo.type = VK_ACCELERATION_STRUCTURE_TYPE_TOP_LEVEL_KHR;
|
||||
accelerationStructureBuildGeometryInfo.flags = VK_BUILD_ACCELERATION_STRUCTURE_PREFER_FAST_TRACE_BIT_KHR;
|
||||
accelerationStructureBuildGeometryInfo.geometryCount = 1;
|
||||
accelerationStructureBuildGeometryInfo.pGeometries = &accelerationStructureGeometry;
|
||||
|
||||
uint32_t primitive_count = 1;
|
||||
|
||||
VkAccelerationStructureBuildSizesInfoKHR accelerationStructureBuildSizesInfo = vks::initializers::accelerationStructureBuildSizesInfoKHR();
|
||||
vkGetAccelerationStructureBuildSizesKHR(
|
||||
device,
|
||||
VK_ACCELERATION_STRUCTURE_BUILD_TYPE_DEVICE_KHR,
|
||||
&accelerationStructureBuildGeometryInfo,
|
||||
&primitive_count,
|
||||
&accelerationStructureBuildSizesInfo);
|
||||
|
||||
createAccelerationStructure(topLevelAS, VK_ACCELERATION_STRUCTURE_TYPE_TOP_LEVEL_KHR, accelerationStructureBuildSizesInfo);
|
||||
|
||||
// Create a small scratch buffer used during build of the top level acceleration structure
|
||||
ScratchBuffer scratchBuffer = createScratchBuffer(accelerationStructureBuildSizesInfo.buildScratchSize);
|
||||
|
||||
VkAccelerationStructureBuildGeometryInfoKHR accelerationBuildGeometryInfo = vks::initializers::accelerationStructureBuildGeometryInfoKHR();
|
||||
accelerationBuildGeometryInfo.type = VK_ACCELERATION_STRUCTURE_TYPE_TOP_LEVEL_KHR;
|
||||
accelerationBuildGeometryInfo.flags = VK_BUILD_ACCELERATION_STRUCTURE_PREFER_FAST_TRACE_BIT_KHR;
|
||||
accelerationBuildGeometryInfo.mode = VK_BUILD_ACCELERATION_STRUCTURE_MODE_BUILD_KHR;
|
||||
accelerationBuildGeometryInfo.dstAccelerationStructure = topLevelAS.handle;
|
||||
accelerationBuildGeometryInfo.geometryCount = 1;
|
||||
accelerationBuildGeometryInfo.pGeometries = &accelerationStructureGeometry;
|
||||
accelerationBuildGeometryInfo.scratchData.deviceAddress = scratchBuffer.deviceAddress;
|
||||
|
||||
VkAccelerationStructureBuildRangeInfoKHR accelerationStructureBuildRangeInfo{};
|
||||
accelerationStructureBuildRangeInfo.primitiveCount = 1;
|
||||
accelerationStructureBuildRangeInfo.primitiveOffset = 0;
|
||||
accelerationStructureBuildRangeInfo.firstVertex = 0;
|
||||
accelerationStructureBuildRangeInfo.transformOffset = 0;
|
||||
std::vector<VkAccelerationStructureBuildRangeInfoKHR*> accelerationBuildStructureRangeInfos = { &accelerationStructureBuildRangeInfo };
|
||||
|
||||
if (accelerationStructureFeatures.accelerationStructureHostCommands)
|
||||
{
|
||||
// Implementation supports building acceleration structure building on host
|
||||
vkBuildAccelerationStructuresKHR(
|
||||
device,
|
||||
VK_NULL_HANDLE,
|
||||
1,
|
||||
&accelerationBuildGeometryInfo,
|
||||
accelerationBuildStructureRangeInfos.data());
|
||||
}
|
||||
else
|
||||
{
|
||||
// Acceleration structure needs to be build on the device
|
||||
VkCommandBuffer commandBuffer = vulkanDevice->createCommandBuffer(VK_COMMAND_BUFFER_LEVEL_PRIMARY, true);
|
||||
vkCmdBuildAccelerationStructuresKHR(
|
||||
commandBuffer,
|
||||
1,
|
||||
&accelerationBuildGeometryInfo,
|
||||
accelerationBuildStructureRangeInfos.data());
|
||||
vulkanDevice->flushCommandBuffer(commandBuffer, queue);
|
||||
}
|
||||
|
||||
deleteScratchBuffer(scratchBuffer);
|
||||
instancesBuffer.destroy();
|
||||
}
|
||||
|
||||
/*
|
||||
Create the Shader Binding Tables that binds the programs and top-level acceleration structure
|
||||
|
||||
SBT Layout used in this sample:
|
||||
|
||||
/-----------\
|
||||
| raygen |
|
||||
|-----------|
|
||||
| miss |
|
||||
|-----------|
|
||||
| hit |
|
||||
|-----------|
|
||||
| callable0 |
|
||||
| callable1 |
|
||||
| callabel2 |
|
||||
\-----------/
|
||||
|
||||
*/
|
||||
void createShaderBindingTables() {
|
||||
const uint32_t handleSize = rayTracingPipelineProperties.shaderGroupHandleSize;
|
||||
const uint32_t handleAlignment = rayTracingPipelineProperties.shaderGroupHandleAlignment;
|
||||
const uint32_t groupCount = 3 + objectCount;
|
||||
const uint32_t sbtSize = handleSize * groupCount;
|
||||
|
||||
std::vector<uint8_t> shaderHandleStorage(sbtSize);
|
||||
VK_CHECK_RESULT(vkGetRayTracingShaderGroupHandlesKHR(device, pipeline, 0, groupCount, sbtSize, shaderHandleStorage.data()));
|
||||
|
||||
createShaderBindingTable(shaderBindingTables.raygen, 1);
|
||||
createShaderBindingTable(shaderBindingTables.miss, 1);
|
||||
createShaderBindingTable(shaderBindingTables.hit, 1);
|
||||
// The callable shader binding table contains one shader handle per ray traced object
|
||||
createShaderBindingTable(shaderBindingTables.callable, objectCount);
|
||||
|
||||
// Copy handles
|
||||
memcpy(shaderBindingTables.raygen.mapped, shaderHandleStorage.data(), handleSize);
|
||||
memcpy(shaderBindingTables.miss.mapped, shaderHandleStorage.data() + handleAlignment, handleSize);
|
||||
memcpy(shaderBindingTables.hit.mapped, shaderHandleStorage.data() + handleAlignment * 2, handleSize);
|
||||
memcpy(shaderBindingTables.callable.mapped, shaderHandleStorage.data() + handleAlignment * 3, handleSize * 3);
|
||||
}
|
||||
|
||||
/*
|
||||
Create the descriptor sets used for the ray tracing dispatch
|
||||
*/
|
||||
void createDescriptorSets()
|
||||
{
|
||||
std::vector<VkDescriptorPoolSize> poolSizes = {
|
||||
{ VK_DESCRIPTOR_TYPE_ACCELERATION_STRUCTURE_KHR, 1 },
|
||||
{ VK_DESCRIPTOR_TYPE_STORAGE_IMAGE, 1 },
|
||||
{ VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 1 },
|
||||
{ VK_DESCRIPTOR_TYPE_STORAGE_BUFFER, 2 }
|
||||
};
|
||||
VkDescriptorPoolCreateInfo descriptorPoolCreateInfo = vks::initializers::descriptorPoolCreateInfo(poolSizes, 1);
|
||||
VK_CHECK_RESULT(vkCreateDescriptorPool(device, &descriptorPoolCreateInfo, nullptr, &descriptorPool));
|
||||
|
||||
VkDescriptorSetAllocateInfo descriptorSetAllocateInfo = vks::initializers::descriptorSetAllocateInfo(descriptorPool, &descriptorSetLayout, 1);
|
||||
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &descriptorSetAllocateInfo, &descriptorSet));
|
||||
|
||||
VkWriteDescriptorSetAccelerationStructureKHR descriptorAccelerationStructureInfo = vks::initializers::writeDescriptorSetAccelerationStructureKHR();
|
||||
descriptorAccelerationStructureInfo.accelerationStructureCount = 1;
|
||||
descriptorAccelerationStructureInfo.pAccelerationStructures = &topLevelAS.handle;
|
||||
|
||||
VkWriteDescriptorSet accelerationStructureWrite{};
|
||||
accelerationStructureWrite.sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
|
||||
// The specialized acceleration structure descriptor has to be chained
|
||||
accelerationStructureWrite.pNext = &descriptorAccelerationStructureInfo;
|
||||
accelerationStructureWrite.dstSet = descriptorSet;
|
||||
accelerationStructureWrite.dstBinding = 0;
|
||||
accelerationStructureWrite.descriptorCount = 1;
|
||||
accelerationStructureWrite.descriptorType = VK_DESCRIPTOR_TYPE_ACCELERATION_STRUCTURE_KHR;
|
||||
|
||||
VkDescriptorImageInfo storageImageDescriptor{ VK_NULL_HANDLE, storageImage.view, VK_IMAGE_LAYOUT_GENERAL };
|
||||
VkDescriptorBufferInfo vertexBufferDescriptor{ vertexBuffer.buffer, 0, VK_WHOLE_SIZE };
|
||||
VkDescriptorBufferInfo indexBufferDescriptor{ indexBuffer.buffer, 0, VK_WHOLE_SIZE };
|
||||
|
||||
std::vector<VkWriteDescriptorSet> writeDescriptorSets = {
|
||||
// Binding 0: Top level acceleration structure
|
||||
accelerationStructureWrite,
|
||||
// Binding 0: Top level acceleration structure
|
||||
vks::initializers::writeDescriptorSet(descriptorSet, VK_DESCRIPTOR_TYPE_STORAGE_IMAGE, 1, &storageImageDescriptor),
|
||||
// Binding 1: Ray tracing result image
|
||||
vks::initializers::writeDescriptorSet(descriptorSet, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 2, &ubo.descriptor),
|
||||
// Binding 1: Ray tracing result image
|
||||
vks::initializers::writeDescriptorSet(descriptorSet, VK_DESCRIPTOR_TYPE_STORAGE_BUFFER, 3, &vertexBufferDescriptor),
|
||||
// Binding 1: Ray tracing result image
|
||||
vks::initializers::writeDescriptorSet(descriptorSet, VK_DESCRIPTOR_TYPE_STORAGE_BUFFER, 4, &indexBufferDescriptor),
|
||||
};
|
||||
vkUpdateDescriptorSets(device, static_cast<uint32_t>(writeDescriptorSets.size()), writeDescriptorSets.data(), 0, VK_NULL_HANDLE);
|
||||
}
|
||||
|
||||
/*
|
||||
Create our ray tracing pipeline
|
||||
*/
|
||||
void createRayTracingPipeline()
|
||||
{
|
||||
std::vector<VkDescriptorSetLayoutBinding> setLayoutBindings = {
|
||||
// Binding 0: Acceleration structure
|
||||
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_ACCELERATION_STRUCTURE_KHR, VK_SHADER_STAGE_RAYGEN_BIT_KHR | VK_SHADER_STAGE_CLOSEST_HIT_BIT_KHR, 0),
|
||||
// Binding 1: Storage image
|
||||
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_STORAGE_IMAGE, VK_SHADER_STAGE_RAYGEN_BIT_KHR, 1),
|
||||
// Binding 2: Uniform buffer
|
||||
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, VK_SHADER_STAGE_RAYGEN_BIT_KHR | VK_SHADER_STAGE_CLOSEST_HIT_BIT_KHR | VK_SHADER_STAGE_MISS_BIT_KHR, 2),
|
||||
// Binding 3: Vertex buffer
|
||||
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_STORAGE_BUFFER, VK_SHADER_STAGE_CLOSEST_HIT_BIT_KHR, 3),
|
||||
// Binding 4: Index buffer
|
||||
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_STORAGE_BUFFER, VK_SHADER_STAGE_CLOSEST_HIT_BIT_KHR, 4),
|
||||
};
|
||||
|
||||
VkDescriptorSetLayoutCreateInfo descriptorSetLayoutCI = vks::initializers::descriptorSetLayoutCreateInfo(setLayoutBindings);
|
||||
VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorSetLayoutCI, nullptr, &descriptorSetLayout));
|
||||
|
||||
VkPipelineLayoutCreateInfo pPipelineLayoutCI = vks::initializers::pipelineLayoutCreateInfo(&descriptorSetLayout, 1);
|
||||
VK_CHECK_RESULT(vkCreatePipelineLayout(device, &pPipelineLayoutCI, nullptr, &pipelineLayout));
|
||||
|
||||
/*
|
||||
Setup ray tracing shader groups
|
||||
*/
|
||||
std::vector<VkPipelineShaderStageCreateInfo> shaderStages;
|
||||
|
||||
// Ray generation shader group
|
||||
{
|
||||
shaderStages.push_back(loadShader(getShadersPath() + "raytracingcallable/raygen.rgen.spv", VK_SHADER_STAGE_RAYGEN_BIT_KHR));
|
||||
VkRayTracingShaderGroupCreateInfoKHR shaderGroup = vks::initializers::rayTracingShaderGroupCreateInfoKHR();
|
||||
shaderGroup.type = VK_RAY_TRACING_SHADER_GROUP_TYPE_GENERAL_KHR;
|
||||
shaderGroup.generalShader = static_cast<uint32_t>(shaderStages.size()) - 1;
|
||||
shaderGroup.closestHitShader = VK_SHADER_UNUSED_KHR;
|
||||
shaderGroup.anyHitShader = VK_SHADER_UNUSED_KHR;
|
||||
shaderGroup.intersectionShader = VK_SHADER_UNUSED_KHR;
|
||||
shaderGroups.push_back(shaderGroup);
|
||||
}
|
||||
|
||||
// Miss shader group
|
||||
{
|
||||
shaderStages.push_back(loadShader(getShadersPath() + "raytracingcallable/miss.rmiss.spv", VK_SHADER_STAGE_MISS_BIT_KHR));
|
||||
VkRayTracingShaderGroupCreateInfoKHR shaderGroup = vks::initializers::rayTracingShaderGroupCreateInfoKHR();
|
||||
shaderGroup.type = VK_RAY_TRACING_SHADER_GROUP_TYPE_GENERAL_KHR;
|
||||
shaderGroup.generalShader = static_cast<uint32_t>(shaderStages.size()) - 1;
|
||||
shaderGroup.closestHitShader = VK_SHADER_UNUSED_KHR;
|
||||
shaderGroup.anyHitShader = VK_SHADER_UNUSED_KHR;
|
||||
shaderGroup.intersectionShader = VK_SHADER_UNUSED_KHR;
|
||||
shaderGroups.push_back(shaderGroup);
|
||||
}
|
||||
|
||||
// Closest hit shader group
|
||||
{
|
||||
shaderStages.push_back(loadShader(getShadersPath() + "raytracingcallable/closesthit.rchit.spv", VK_SHADER_STAGE_CLOSEST_HIT_BIT_KHR));
|
||||
VkRayTracingShaderGroupCreateInfoKHR shaderGroup = vks::initializers::rayTracingShaderGroupCreateInfoKHR();
|
||||
shaderGroup.type = VK_RAY_TRACING_SHADER_GROUP_TYPE_TRIANGLES_HIT_GROUP_KHR;
|
||||
shaderGroup.generalShader = VK_SHADER_UNUSED_KHR;
|
||||
shaderGroup.closestHitShader = static_cast<uint32_t>(shaderStages.size()) - 1;
|
||||
shaderGroup.anyHitShader = VK_SHADER_UNUSED_KHR;
|
||||
shaderGroup.intersectionShader = VK_SHADER_UNUSED_KHR;
|
||||
shaderGroups.push_back(shaderGroup);
|
||||
}
|
||||
|
||||
// Callable shader group
|
||||
// This sample's hit shader will call different callable shaders depending on the geometry index, so as we render three different geometries, we'll also use three callable shaders
|
||||
for (uint32_t i = 0; i < objectCount; i++)
|
||||
{
|
||||
shaderStages.push_back(loadShader(getShadersPath() + "raytracingcallable/callable" + std::to_string(i+1) + ".rcall.spv", VK_SHADER_STAGE_CALLABLE_BIT_KHR));
|
||||
VkRayTracingShaderGroupCreateInfoKHR shaderGroup{};
|
||||
shaderGroup.sType = VK_STRUCTURE_TYPE_RAY_TRACING_SHADER_GROUP_CREATE_INFO_KHR;
|
||||
shaderGroup.type = VK_RAY_TRACING_SHADER_GROUP_TYPE_GENERAL_KHR;
|
||||
shaderGroup.generalShader = static_cast<uint32_t>(shaderStages.size()) - 1;
|
||||
shaderGroup.closestHitShader = VK_SHADER_UNUSED_KHR;
|
||||
shaderGroup.anyHitShader = VK_SHADER_UNUSED_KHR;
|
||||
shaderGroup.intersectionShader = VK_SHADER_UNUSED_KHR;
|
||||
shaderGroups.push_back(shaderGroup);
|
||||
}
|
||||
|
||||
VkRayTracingPipelineCreateInfoKHR rayTracingPipelineCI = vks::initializers::rayTracingPipelineCreateInfoKHR();
|
||||
rayTracingPipelineCI.stageCount = static_cast<uint32_t>(shaderStages.size());
|
||||
rayTracingPipelineCI.pStages = shaderStages.data();
|
||||
rayTracingPipelineCI.groupCount = static_cast<uint32_t>(shaderGroups.size());
|
||||
rayTracingPipelineCI.pGroups = shaderGroups.data();
|
||||
rayTracingPipelineCI.maxPipelineRayRecursionDepth = 2;
|
||||
rayTracingPipelineCI.layout = pipelineLayout;
|
||||
VK_CHECK_RESULT(vkCreateRayTracingPipelinesKHR(device, VK_NULL_HANDLE, VK_NULL_HANDLE, 1, &rayTracingPipelineCI, nullptr, &pipeline));
|
||||
}
|
||||
|
||||
/*
|
||||
Create the uniform buffer used to pass matrices to the ray tracing ray generation shader
|
||||
*/
|
||||
void createUniformBuffer()
|
||||
{
|
||||
VK_CHECK_RESULT(vulkanDevice->createBuffer(
|
||||
VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
|
||||
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
|
||||
&ubo,
|
||||
sizeof(uniformData),
|
||||
&uniformData));
|
||||
VK_CHECK_RESULT(ubo.map());
|
||||
|
||||
updateUniformBuffers();
|
||||
}
|
||||
|
||||
/*
|
||||
If the window has been resized, we need to recreate the storage image and it's descriptor
|
||||
*/
|
||||
void handleResize()
|
||||
{
|
||||
// Recreate image
|
||||
createStorageImage(swapChain.colorFormat, { width, height, 1 });
|
||||
// Update descriptor
|
||||
VkDescriptorImageInfo storageImageDescriptor{ VK_NULL_HANDLE, storageImage.view, VK_IMAGE_LAYOUT_GENERAL };
|
||||
VkWriteDescriptorSet resultImageWrite = vks::initializers::writeDescriptorSet(descriptorSet, VK_DESCRIPTOR_TYPE_STORAGE_IMAGE, 1, &storageImageDescriptor);
|
||||
vkUpdateDescriptorSets(device, 1, &resultImageWrite, 0, VK_NULL_HANDLE);
|
||||
}
|
||||
|
||||
/*
|
||||
Command buffer generation
|
||||
*/
|
||||
void buildCommandBuffers()
|
||||
{
|
||||
if (resized)
|
||||
{
|
||||
handleResize();
|
||||
}
|
||||
|
||||
VkCommandBufferBeginInfo cmdBufInfo = vks::initializers::commandBufferBeginInfo();
|
||||
|
||||
VkImageSubresourceRange subresourceRange = { VK_IMAGE_ASPECT_COLOR_BIT, 0, 1, 0, 1 };
|
||||
|
||||
for (int32_t i = 0; i < drawCmdBuffers.size(); ++i)
|
||||
{
|
||||
VK_CHECK_RESULT(vkBeginCommandBuffer(drawCmdBuffers[i], &cmdBufInfo));
|
||||
|
||||
/*
|
||||
Dispatch the ray tracing commands
|
||||
*/
|
||||
vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_RAY_TRACING_KHR, pipeline);
|
||||
vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_RAY_TRACING_KHR, pipelineLayout, 0, 1, &descriptorSet, 0, 0);
|
||||
|
||||
vkCmdTraceRaysKHR(
|
||||
drawCmdBuffers[i],
|
||||
&shaderBindingTables.raygen.stridedDeviceAddressRegion,
|
||||
&shaderBindingTables.miss.stridedDeviceAddressRegion,
|
||||
&shaderBindingTables.hit.stridedDeviceAddressRegion,
|
||||
&shaderBindingTables.callable.stridedDeviceAddressRegion,
|
||||
width,
|
||||
height,
|
||||
1);
|
||||
|
||||
/*
|
||||
Copy ray tracing output to swap chain image
|
||||
*/
|
||||
|
||||
// Prepare current swap chain image as transfer destination
|
||||
vks::tools::setImageLayout(
|
||||
drawCmdBuffers[i],
|
||||
swapChain.images[i],
|
||||
VK_IMAGE_LAYOUT_UNDEFINED,
|
||||
VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
|
||||
subresourceRange);
|
||||
|
||||
// Prepare ray tracing output image as transfer source
|
||||
vks::tools::setImageLayout(
|
||||
drawCmdBuffers[i],
|
||||
storageImage.image,
|
||||
VK_IMAGE_LAYOUT_GENERAL,
|
||||
VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL,
|
||||
subresourceRange);
|
||||
|
||||
VkImageCopy copyRegion{};
|
||||
copyRegion.srcSubresource = { VK_IMAGE_ASPECT_COLOR_BIT, 0, 0, 1 };
|
||||
copyRegion.srcOffset = { 0, 0, 0 };
|
||||
copyRegion.dstSubresource = { VK_IMAGE_ASPECT_COLOR_BIT, 0, 0, 1 };
|
||||
copyRegion.dstOffset = { 0, 0, 0 };
|
||||
copyRegion.extent = { width, height, 1 };
|
||||
vkCmdCopyImage(drawCmdBuffers[i], storageImage.image, VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL, swapChain.images[i], VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1, ©Region);
|
||||
|
||||
// Transition swap chain image back for presentation
|
||||
vks::tools::setImageLayout(
|
||||
drawCmdBuffers[i],
|
||||
swapChain.images[i],
|
||||
VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
|
||||
VK_IMAGE_LAYOUT_PRESENT_SRC_KHR,
|
||||
subresourceRange);
|
||||
|
||||
// Transition ray tracing output image back to general layout
|
||||
vks::tools::setImageLayout(
|
||||
drawCmdBuffers[i],
|
||||
storageImage.image,
|
||||
VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL,
|
||||
VK_IMAGE_LAYOUT_GENERAL,
|
||||
subresourceRange);
|
||||
|
||||
VK_CHECK_RESULT(vkEndCommandBuffer(drawCmdBuffers[i]));
|
||||
}
|
||||
}
|
||||
|
||||
void updateUniformBuffers()
|
||||
{
|
||||
uniformData.projInverse = glm::inverse(camera.matrices.perspective);
|
||||
uniformData.viewInverse = glm::inverse(camera.matrices.view);
|
||||
memcpy(ubo.mapped, &uniformData, sizeof(uniformData));
|
||||
}
|
||||
|
||||
void getEnabledFeatures()
|
||||
{
|
||||
// Enable features required for ray tracing using feature chaining via pNext
|
||||
enabledBufferDeviceAddresFeatures.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_BUFFER_DEVICE_ADDRESS_FEATURES;
|
||||
enabledBufferDeviceAddresFeatures.bufferDeviceAddress = VK_TRUE;
|
||||
|
||||
enabledRayTracingPipelineFeatures.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_RAY_TRACING_PIPELINE_FEATURES_KHR;
|
||||
enabledRayTracingPipelineFeatures.rayTracingPipeline = VK_TRUE;
|
||||
enabledRayTracingPipelineFeatures.pNext = &enabledBufferDeviceAddresFeatures;
|
||||
|
||||
enabledAccelerationStructureFeatures.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_ACCELERATION_STRUCTURE_FEATURES_KHR;
|
||||
enabledAccelerationStructureFeatures.accelerationStructure = VK_TRUE;
|
||||
enabledAccelerationStructureFeatures.pNext = &enabledRayTracingPipelineFeatures;
|
||||
|
||||
deviceCreatepNextChain = &enabledAccelerationStructureFeatures;
|
||||
}
|
||||
|
||||
void prepare()
|
||||
{
|
||||
VulkanRaytracingSample::prepare();
|
||||
|
||||
// Create the acceleration structures used to render the ray traced scene
|
||||
createBottomLevelAccelerationStructure();
|
||||
createTopLevelAccelerationStructure();
|
||||
|
||||
createStorageImage(swapChain.colorFormat, { width, height, 1 });
|
||||
createUniformBuffer();
|
||||
createRayTracingPipeline();
|
||||
createShaderBindingTables();
|
||||
createDescriptorSets();
|
||||
buildCommandBuffers();
|
||||
prepared = true;
|
||||
}
|
||||
|
||||
void draw()
|
||||
{
|
||||
VulkanExampleBase::prepareFrame();
|
||||
submitInfo.commandBufferCount = 1;
|
||||
submitInfo.pCommandBuffers = &drawCmdBuffers[currentBuffer];
|
||||
VK_CHECK_RESULT(vkQueueSubmit(queue, 1, &submitInfo, VK_NULL_HANDLE));
|
||||
VulkanExampleBase::submitFrame();
|
||||
}
|
||||
|
||||
virtual void render()
|
||||
{
|
||||
if (!prepared)
|
||||
return;
|
||||
draw();
|
||||
if (!paused || camera.updated)
|
||||
updateUniformBuffers();
|
||||
}
|
||||
};
|
||||
|
||||
VULKAN_EXAMPLE_MAIN()
|
||||
Loading…
Add table
Add a link
Reference in a new issue