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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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58
ray_tracing_rayquery/hello_vulkan.cpp
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@ -163,7 +163,7 @@ void HelloVulkan::updateDescriptorSet()
std::vector<vk::DescriptorImageInfo> diit;
for(auto& texture : m_textures)
{
diit.push_back(texture.descriptor);
diit.emplace_back(texture.descriptor);
}
writes.emplace_back(m_descSetLayoutBind.makeWriteArray(m_descSet, 3, diit.data()));
@ -201,8 +201,8 @@ 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)},
@ -220,6 +220,7 @@ 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);
@ -246,10 +247,12 @@ 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
@ -340,9 +343,10 @@ 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);
stbi_uc* stbi_pixels =
stbi_load(txtFile.c_str(), &texWidth, &texHeight, &texChannels, STBI_rgb_alpha);
std::array<stbi_uc, 4> color{255u, 0u, 255u, 255u};
@ -475,7 +479,7 @@ void HelloVulkan::createOffscreenRender()
| vk::ImageUsageFlagBits::eStorage);
nvvk::Image image = m_alloc.createImage(colorCreateInfo);
nvvk::Image image = m_alloc.createImage(colorCreateInfo);
vk::ImageViewCreateInfo ivInfo = nvvk::makeImageViewCreateInfo(image.image, colorCreateInfo);
m_offscreenColor = m_alloc.createTexture(image, ivInfo, vk::SamplerCreateInfo());
m_offscreenColor.descriptor.imageLayout = VK_IMAGE_LAYOUT_GENERAL;
@ -554,9 +558,9 @@ 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();
@ -620,55 +624,47 @@ 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)
{
// Setting up the creation info of acceleration structure
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
// Building part
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);
// Setting up the build info of the acceleration
vk::AccelerationStructureGeometryKHR asGeom;
asGeom.setGeometryType(asCreate.geometryType);
asGeom.setGeometryType(vk::GeometryTypeKHR::eTriangles);
asGeom.setFlags(vk::GeometryFlagBitsKHR::eOpaque);
asGeom.geometry.setTriangles(triangles);
// The primitive itself
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);
// Our blas is only one geometry, but could be made of many geometries
nvvk::RaytracingBuilderKHR::Blas blas;
nvvk::RaytracingBuilderKHR::BlasInput blas;
blas.asGeometry.emplace_back(asGeom);
blas.asCreateGeometryInfo.emplace_back(asCreate);
blas.asBuildOffsetInfo.emplace_back(offset);
return blas;
@ -680,7 +676,7 @@ 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)
{