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Using final KHR ray tracing extension: VK_KHR_acceleration_structure, VK_KHR_ray_tracing_pipeline and VK_KHR_ray_query

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This commit is contained in:
mklefrancois 2020-11-23 11:33:51 +01:00
parent 7179569ec3
commit b26ff92473
80 changed files with 2446 additions and 2351 deletions
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136
ray_tracing_manyhits/hello_vulkan.cpp
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@ -39,16 +39,12 @@ extern std::vector<std::string> defaultSearchPaths;
#include "nvvk/descriptorsets_vk.hpp"
#include "nvvk/pipeline_vk.hpp"
#include "nvh/alignment.hpp"
#include "nvh/fileoperations.hpp"
#include "nvvk/commands_vk.hpp"
#include "nvvk/renderpasses_vk.hpp"
#include "nvvk/shaders_vk.hpp"
#ifndef ROUND_UP
#define ROUND_UP(v, powerOf2Alignment) (((v) + (powerOf2Alignment)-1) & ~((powerOf2Alignment)-1))
#endif
// Holding the camera matrices
struct CameraMatrices
{
@ -197,8 +193,8 @@ void HelloVulkan::createGraphicsPipeline()
std::vector<std::string> paths = defaultSearchPaths;
nvvk::GraphicsPipelineGeneratorCombined gpb(m_device, m_pipelineLayout, m_offscreenRenderPass);
gpb.depthStencilState.depthTestEnable = true;
gpb.addShader(nvh::loadFile("shaders/vert_shader.vert.spv", true, paths), vkSS::eVertex);
gpb.addShader(nvh::loadFile("shaders/frag_shader.frag.spv", true, paths), vkSS::eFragment);
gpb.addShader(nvh::loadFile("shaders/vert_shader.vert.spv", true, paths, true), vkSS::eVertex);
gpb.addShader(nvh::loadFile("shaders/frag_shader.frag.spv", true, paths, true), vkSS::eFragment);
gpb.addBindingDescription({0, sizeof(VertexObj)});
gpb.addAttributeDescriptions({{0, 0, vk::Format::eR32G32B32Sfloat, offsetof(VertexObj, pos)},
{1, 0, vk::Format::eR32G32B32Sfloat, offsetof(VertexObj, nrm)},
@ -216,6 +212,7 @@ void HelloVulkan::loadModel(const std::string& filename, nvmath::mat4f transform
{
using vkBU = vk::BufferUsageFlagBits;
LOGI("Loading File: %s \n", filename.c_str());
ObjLoader loader;
loader.loadModel(filename);
@ -242,10 +239,12 @@ void HelloVulkan::loadModel(const std::string& filename, nvmath::mat4f transform
vk::CommandBuffer cmdBuf = cmdBufGet.createCommandBuffer();
model.vertexBuffer =
m_alloc.createBuffer(cmdBuf, loader.m_vertices,
vkBU::eVertexBuffer | vkBU::eStorageBuffer | vkBU::eShaderDeviceAddress);
vkBU::eVertexBuffer | vkBU::eStorageBuffer | vkBU::eShaderDeviceAddress
| vkBU::eAccelerationStructureBuildInputReadOnlyKHR);
model.indexBuffer =
m_alloc.createBuffer(cmdBuf, loader.m_indices,
vkBU::eIndexBuffer | vkBU::eStorageBuffer | vkBU::eShaderDeviceAddress);
vkBU::eIndexBuffer | vkBU::eStorageBuffer | vkBU::eShaderDeviceAddress
| vkBU::eAccelerationStructureBuildInputReadOnlyKHR);
model.matColorBuffer = m_alloc.createBuffer(cmdBuf, loader.m_materials, vkBU::eStorageBuffer);
model.matIndexBuffer = m_alloc.createBuffer(cmdBuf, loader.m_matIndx, vkBU::eStorageBuffer);
// Creates all textures found
@ -318,7 +317,7 @@ void HelloVulkan::createTextureImages(const vk::CommandBuffer& cmdBuf,
auto imgSize = vk::Extent2D(1, 1);
auto imageCreateInfo = nvvk::makeImage2DCreateInfo(imgSize, format);
// Creating the dummy texure
// Creating the dummy texture
nvvk::Image image = m_alloc.createImage(cmdBuf, bufferSize, color.data(), imageCreateInfo);
vk::ImageViewCreateInfo ivInfo = nvvk::makeImageViewCreateInfo(image.image, imageCreateInfo);
texture = m_alloc.createTexture(image, ivInfo, samplerCreateInfo);
@ -336,7 +335,7 @@ void HelloVulkan::createTextureImages(const vk::CommandBuffer& cmdBuf,
std::stringstream o;
int texWidth, texHeight, texChannels;
o << "media/textures/" << texture;
std::string txtFile = nvh::findFile(o.str(), defaultSearchPaths);
std::string txtFile = nvh::findFile(o.str(), defaultSearchPaths, true);
stbi_uc* stbi_pixels =
stbi_load(txtFile.c_str(), &texWidth, &texHeight, &texChannels, STBI_rgb_alpha);
@ -558,9 +557,9 @@ void HelloVulkan::createPostPipeline()
nvvk::GraphicsPipelineGeneratorCombined pipelineGenerator(m_device, m_postPipelineLayout,
m_renderPass);
pipelineGenerator.addShader(nvh::loadFile("shaders/passthrough.vert.spv", true, paths),
pipelineGenerator.addShader(nvh::loadFile("shaders/passthrough.vert.spv", true, paths, true),
vk::ShaderStageFlagBits::eVertex);
pipelineGenerator.addShader(nvh::loadFile("shaders/post.frag.spv", true, paths),
pipelineGenerator.addShader(nvh::loadFile("shaders/post.frag.spv", true, paths, true),
vk::ShaderStageFlagBits::eFragment);
pipelineGenerator.rasterizationState.setCullMode(vk::CullModeFlagBits::eNone);
m_postPipeline = pipelineGenerator.createPipeline();
@ -624,47 +623,43 @@ void HelloVulkan::drawPost(vk::CommandBuffer cmdBuf)
void HelloVulkan::initRayTracing()
{
// Requesting ray tracing properties
auto properties = m_physicalDevice.getProperties2<vk::PhysicalDeviceProperties2,
vk::PhysicalDeviceRayTracingPropertiesKHR>();
m_rtProperties = properties.get<vk::PhysicalDeviceRayTracingPropertiesKHR>();
auto properties =
m_physicalDevice.getProperties2<vk::PhysicalDeviceProperties2,
vk::PhysicalDeviceRayTracingPipelinePropertiesKHR>();
m_rtProperties = properties.get<vk::PhysicalDeviceRayTracingPipelinePropertiesKHR>();
m_rtBuilder.setup(m_device, &m_alloc, m_graphicsQueueIndex);
}
//--------------------------------------------------------------------------------------------------
// Converting a OBJ primitive to the ray tracing geometry used for the BLAS
//
nvvk::RaytracingBuilderKHR::Blas HelloVulkan::objectToVkGeometryKHR(const ObjModel& model)
nvvk::RaytracingBuilderKHR::BlasInput HelloVulkan::objectToVkGeometryKHR(const ObjModel& model)
{
nvvk::RaytracingBuilderKHR::Blas blas;
vk::AccelerationStructureCreateGeometryTypeInfoKHR asCreate;
asCreate.setGeometryType(vk::GeometryTypeKHR::eTriangles);
asCreate.setIndexType(vk::IndexType::eUint32);
asCreate.setVertexFormat(vk::Format::eR32G32B32Sfloat);
asCreate.setMaxPrimitiveCount(model.nbIndices / 3); // Nb triangles
asCreate.setMaxVertexCount(model.nbVertices);
asCreate.setAllowsTransforms(VK_FALSE); // No adding transformation matrices
vk::DeviceAddress vertexAddress = m_device.getBufferAddress({model.vertexBuffer.buffer});
vk::DeviceAddress indexAddress = m_device.getBufferAddress({model.indexBuffer.buffer});
vk::AccelerationStructureGeometryTrianglesDataKHR triangles;
triangles.setVertexFormat(asCreate.vertexFormat);
triangles.setVertexFormat(vk::Format::eR32G32B32Sfloat);
triangles.setVertexData(vertexAddress);
triangles.setVertexStride(sizeof(VertexObj));
triangles.setIndexType(asCreate.indexType);
triangles.setIndexType(vk::IndexType::eUint32);
triangles.setIndexData(indexAddress);
triangles.setTransformData({});
triangles.setMaxVertex(model.nbVertices);
vk::AccelerationStructureGeometryKHR asGeom;
asGeom.setGeometryType(asCreate.geometryType);
// Consider the geometry opaque for optimization
asGeom.setGeometryType(vk::GeometryTypeKHR::eTriangles);
asGeom.setFlags(vk::GeometryFlagBitsKHR::eOpaque);
asGeom.geometry.setTriangles(triangles);
vk::AccelerationStructureBuildOffsetInfoKHR offset;
vk::AccelerationStructureBuildRangeInfoKHR offset;
offset.setFirstVertex(0);
offset.setPrimitiveCount(asCreate.maxPrimitiveCount);
offset.setPrimitiveCount(model.nbIndices / 3); // Nb triangles
offset.setPrimitiveOffset(0);
offset.setTransformOffset(0);
nvvk::RaytracingBuilderKHR::BlasInput blas;
blas.asGeometry.emplace_back(asGeom);
blas.asCreateGeometryInfo.emplace_back(asCreate);
blas.asBuildOffsetInfo.emplace_back(offset);
return blas;
}
@ -672,7 +667,7 @@ nvvk::RaytracingBuilderKHR::Blas HelloVulkan::objectToVkGeometryKHR(const ObjMod
void HelloVulkan::createBottomLevelAS()
{
// BLAS - Storing each primitive in a geometry
std::vector<nvvk::RaytracingBuilderKHR::Blas> allBlas;
std::vector<nvvk::RaytracingBuilderKHR::BlasInput> allBlas;
allBlas.reserve(m_objModel.size());
for(const auto& obj : m_objModel)
{
@ -758,16 +753,15 @@ void HelloVulkan::createRtPipeline()
vk::ShaderModule raygenSM =
nvvk::createShaderModule(m_device, //
nvh::loadFile("shaders/raytrace.rgen.spv", true, paths));
nvh::loadFile("shaders/raytrace.rgen.spv", true, paths, true));
vk::ShaderModule missSM =
nvvk::createShaderModule(m_device, //
nvh::loadFile("shaders/raytrace.rmiss.spv", true, paths));
nvh::loadFile("shaders/raytrace.rmiss.spv", true, paths, true));
// The second miss shader is invoked when a shadow ray misses the geometry. It
// simply indicates that no occlusion has been found
vk::ShaderModule shadowmissSM =
nvvk::createShaderModule(m_device,
nvh::loadFile("shaders/raytraceShadow.rmiss.spv", true, paths));
vk::ShaderModule shadowmissSM = nvvk::createShaderModule(
m_device, nvh::loadFile("shaders/raytraceShadow.rmiss.spv", true, paths, true));
std::vector<vk::PipelineShaderStageCreateInfo> stages;
@ -794,10 +788,10 @@ void HelloVulkan::createRtPipeline()
// Hit Group - Closest Hit + AnyHit
vk::ShaderModule chitSM =
nvvk::createShaderModule(m_device, //
nvh::loadFile("shaders/raytrace.rchit.spv", true, paths));
nvh::loadFile("shaders/raytrace.rchit.spv", true, paths, true));
vk::ShaderModule chit2SM =
nvvk::createShaderModule(m_device, //
nvh::loadFile("shaders/raytrace2.rchit.spv", true, paths));
nvh::loadFile("shaders/raytrace2.rchit.spv", true, paths, true));
vk::RayTracingShaderGroupCreateInfoKHR hg{vk::RayTracingShaderGroupTypeKHR::eTrianglesHitGroup,
VK_SHADER_UNUSED_KHR, VK_SHADER_UNUSED_KHR,
@ -836,10 +830,10 @@ void HelloVulkan::createRtPipeline()
m_rtShaderGroups.size())); // 1-raygen, n-miss, n-(hit[+anyhit+intersect])
rayPipelineInfo.setPGroups(m_rtShaderGroups.data());
rayPipelineInfo.setMaxRecursionDepth(2); // Ray depth
rayPipelineInfo.setMaxPipelineRayRecursionDepth(2); // Ray depth
rayPipelineInfo.setLayout(m_rtPipelineLayout);
m_rtPipeline =
static_cast<const vk::Pipeline&>(m_device.createRayTracingPipelineKHR({}, rayPipelineInfo));
m_rtPipeline = static_cast<const vk::Pipeline&>(
m_device.createRayTracingPipelineKHR({}, {}, rayPipelineInfo));
m_device.destroy(raygenSM);
m_device.destroy(missSM);
@ -857,16 +851,17 @@ void HelloVulkan::createRtPipeline()
void HelloVulkan::createRtShaderBindingTable()
{
auto groupCount =
static_cast<uint32_t>(m_rtShaderGroups.size()); // 3 shaders: raygen, miss, chit
uint32_t groupHandleSize = m_rtProperties.shaderGroupHandleSize; // Size of a program identifier
uint32_t groupAlignSize = m_rtProperties.shaderGroupBaseAlignment;
static_cast<uint32_t>(m_rtShaderGroups.size()); // 3 shaders: raygen, miss, chit
uint32_t groupHandleSize = m_rtProperties.shaderGroupHandleSize; // Size of a program identifier
uint32_t groupSizeAligned = m_rtProperties.shaderGroupBaseAlignment;
// Fetch all the shader handles used in the pipeline, so that they can be written in the SBT
uint32_t sbtSize = groupCount * groupAlignSize;
uint32_t sbtSize = groupCount * groupSizeAligned;
std::vector<uint8_t> shaderHandleStorage(sbtSize);
m_device.getRayTracingShaderGroupHandlesKHR(m_rtPipeline, 0, groupCount, sbtSize,
shaderHandleStorage.data());
auto result = m_device.getRayTracingShaderGroupHandlesKHR(m_rtPipeline, 0, groupCount, sbtSize,
shaderHandleStorage.data());
assert(result == vk::Result::eSuccess);
// Retrieve the handle pointers
std::vector<uint8_t*> handles(groupCount);
@ -876,10 +871,10 @@ void HelloVulkan::createRtShaderBindingTable()
}
// Sizes
uint32_t rayGenSize = groupAlignSize;
uint32_t missSize = groupAlignSize;
uint32_t rayGenSize = groupSizeAligned;
uint32_t missSize = groupSizeAligned;
uint32_t hitSize =
ROUND_UP(groupHandleSize + static_cast<int>(sizeof(HitRecordBuffer)), groupAlignSize);
nvh::align_up(groupHandleSize + static_cast<int>(sizeof(HitRecordBuffer)), groupSizeAligned);
uint32_t newSbtSize = rayGenSize + 2 * missSize + 3 * hitSize;
std::vector<uint8_t> sbtBuffer(newSbtSize);
@ -915,7 +910,9 @@ void HelloVulkan::createRtShaderBindingTable()
nvvk::CommandPool genCmdBuf(m_device, m_graphicsQueueIndex);
vk::CommandBuffer cmdBuf = genCmdBuf.createCommandBuffer();
m_rtSBTBuffer = m_alloc.createBuffer(cmdBuf, sbtBuffer, vk::BufferUsageFlagBits::eRayTracingKHR);
m_rtSBTBuffer = m_alloc.createBuffer(cmdBuf, sbtBuffer,
vk::BufferUsageFlagBits::eShaderDeviceAddressKHR
| vk::BufferUsageFlagBits::eShaderBindingTableKHR);
m_debug.setObjectName(m_rtSBTBuffer.buffer, "SBT");
@ -946,26 +943,25 @@ void HelloVulkan::raytrace(const vk::CommandBuffer& cmdBuf, const nvmath::vec4f&
| vk::ShaderStageFlagBits::eMissKHR,
0, m_rtPushConstants);
vk::DeviceSize handleSize = m_rtProperties.shaderGroupHandleSize;
vk::DeviceSize alignSize = m_rtProperties.shaderGroupBaseAlignment;
vk::DeviceSize rayGenOffset = 0u * alignSize; // Start at the beginning of m_sbtBuffer
vk::DeviceSize missOffset = 1u * alignSize; // Jump over raygen
vk::DeviceSize hitGroupOffset = 3u * alignSize; // Jump over the previous shaders
vk::DeviceSize sbtSize = alignSize * (vk::DeviceSize)m_rtShaderGroups.size();
// Size of a program identifier
uint32_t groupSize =
nvh::align_up(m_rtProperties.shaderGroupHandleSize, m_rtProperties.shaderGroupBaseAlignment);
uint32_t groupStride = groupSize;
vk::DeviceSize hitGroupSize =
nvh::align_up(m_rtProperties.shaderGroupHandleSize + sizeof(HitRecordBuffer),
m_rtProperties.shaderGroupBaseAlignment);
vk::DeviceAddress sbtAddress = m_device.getBufferAddress({m_rtSBTBuffer.buffer});
vk::DeviceSize hitGroupStride = ROUND_UP(handleSize + sizeof(HitRecordBuffer), alignSize);
using Stride = vk::StridedDeviceAddressRegionKHR;
std::array<Stride, 4> strideAddresses{
Stride{sbtAddress + 0u * groupSize, groupStride, groupSize * 1}, // raygen
Stride{sbtAddress + 1u * groupSize, groupStride, groupSize * 2}, // miss
Stride{sbtAddress + 3u * groupSize, hitGroupSize, hitGroupSize * 3}, // hit
Stride{0u, 0u, 0u}}; // callable
// m_sbtBuffer holds all the shader handles: raygen, n-miss, hit...
const vk::StridedBufferRegionKHR raygenShaderBindingTable = {m_rtSBTBuffer.buffer, rayGenOffset,
handleSize, sbtSize};
const vk::StridedBufferRegionKHR missShaderBindingTable = {m_rtSBTBuffer.buffer, missOffset,
handleSize, sbtSize};
const vk::StridedBufferRegionKHR hitShaderBindingTable = {m_rtSBTBuffer.buffer, hitGroupOffset,
hitGroupStride, sbtSize};
const vk::StridedBufferRegionKHR callableShaderBindingTable;
cmdBuf.traceRaysKHR(&raygenShaderBindingTable, &missShaderBindingTable, &hitShaderBindingTable,
&callableShaderBindingTable, //
cmdBuf.traceRaysKHR(&strideAddresses[0], &strideAddresses[1], &strideAddresses[2],
&strideAddresses[3], //
m_size.width, m_size.height, 1); //