vk_mini_samples/samples/ray_query/ray_query.cpp at main · nvpro-samples/vk_mini_samples · GitHub

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* 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.

* SPDX-License-Identifier: Apache-2.0

//////////////////////////////////////////////////////////////////////////

This shows the use of Ray Query, or casting rays in a compute shader

//////////////////////////////////////////////////////////////////////////

#define USE_SLANG true

#define SHADER_LANGUAGE_STR (USE_SLANG ? "Slang" : "GLSL")

#define VMA_IMPLEMENTATION

#define VMA_LEAK_LOG_FORMAT(format, ...) \

{ \

printf((format), __VA_ARGS__); \

printf("\n"); \

}

#include <array>

#include <glm/glm.hpp>

#include <vulkan/vulkan_core.h>

#include "shaders/dh_bindings.h"

#include "shaders/shaderio.h" // Shared between host and device

#include "_autogen/ray_query.comp.glsl.h"

#include "_autogen/ray_query.slang.h"

#include "_autogen/tonemapper.slang.h"

#include <nvapp/application.hpp>

#include <nvapp/elem_camera.hpp>

#include <nvapp/elem_default_menu.hpp>

#include <nvapp/elem_default_title.hpp>

#include <nvgui/camera.hpp>

#include <nvgui/property_editor.hpp>

#include <nvgui/tonemapper.hpp>

#include <nvshaders_host/tonemapper.hpp>

#include <nvutils/camera_manipulator.hpp>

#include <nvutils/file_operations.hpp>

#include <nvutils/logger.hpp>

#include <nvutils/parameter_parser.hpp>

#include <nvutils/primitives.hpp>

#include <nvvk/acceleration_structures.hpp>

#include <nvvk/check_error.hpp>

#include <nvvk/context.hpp>

#include <nvvk/debug_util.hpp>

#include <nvvk/descriptors.hpp>

#include <nvapp/imgui_texture.hpp>

#include <nvvk/render_target.hpp>

#include <nvvk/resource_allocator.hpp>

#include <nvvk/sampler_pool.hpp>

#include <nvvk/sbt_generator.hpp>

#include <nvvk/specialization.hpp>

#include <nvvk/staging.hpp>

#include "common/utils.hpp"

std::shared_ptr<nvutils::CameraManipulator> g_cameraManip{};

/// </summary> Ray trace multiple primitives using Ray Query

class RayQuery : public nvapp::IAppElement

{

enum

{

eImgTonemapped,

eImgRendered

};

public:

RayQuery() = default;

~RayQuery() override = default;

void onAttach(nvapp::Application* app) override

{

m_app = app;

m_device = m_app->getDevice();

// Create the Vulkan allocator (VMA)

m_allocator.init({

.flags = VMA_ALLOCATOR_CREATE_BUFFER_DEVICE_ADDRESS_BIT,

.physicalDevice = app->getPhysicalDevice(),

.device = app->getDevice(),

.instance = app->getInstance(),

.vulkanApiVersion = VK_API_VERSION_1_4,

}); // Allocator

// The texture sampler to use (needed to sample the rendered image in the tonemapper)

m_samplerPool.init(m_device);

NVVK_CHECK(m_samplerPool.acquireSampler(m_linearSampler));

NVVK_DBG_NAME(m_linearSampler);

// Offscreen render target for the ray tracing and tonemapping

NVVK_CHECK(m_renderTarget.init(

{.alloc = &m_allocator, .colorFormats = {VK_FORMAT_R8G8B8A8_UNORM, VK_FORMAT_R32G32B32A32_SFLOAT}, .debugName = "RayQuery"}));

// Tonemapper

{

auto code = std::span<const uint32_t>(tonemapper_slang);

m_tonemapper.init(&m_allocator, code);

}

// Requesting ray tracing properties

VkPhysicalDeviceProperties2 prop2{VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PROPERTIES_2};

m_rtProperties.pNext = &m_asProperties;

prop2.pNext = &m_rtProperties;

vkGetPhysicalDeviceProperties2(m_app->getPhysicalDevice(), &prop2);

// Create resources

createScene();

createVkBuffers();

createBottomLevelAS();

createTopLevelAS();

createCompPipelines();

}

void onDetach() override

{

vkDeviceWaitIdle(m_device);

destroyResources();

}

void onResize(VkCommandBuffer cmd, const VkExtent2D& size) override

{

NVVK_CHECK(m_renderTarget.update(cmd, size));

m_viewportImage.update(m_renderTarget.getUiImageView(eImgTonemapped));

resetFrame(); // Reset frame to restart the rendering

}

void onUIRender() override

{

{ // Setting menu

ImGui::Begin("Settings");

nvgui::CameraWidget(g_cameraManip);

namespace PE = nvgui::PropertyEditor;

bool changed{false};

if(ImGui::CollapsingHeader("Settings", ImGuiTreeNodeFlags_DefaultOpen))

{

PE::begin();

if(PE::treeNode("Light"))

{

changed |= PE::DragFloat3("Position", &m_light.position.x);

changed |= PE::SliderFloat("Intensity", &m_light.intensity, 0.0F, 1000.0F, "%.3f", ImGuiSliderFlags_Logarithmic);

changed |= PE::SliderFloat("Radius", &m_light.radius, 0.0F, 1.0F);

PE::treePop();

}

if(PE::treeNode("Ray Tracer"))

{

changed |= PE::SliderInt("Depth", &m_pushConst.maxDepth, 0, 20);

changed |= PE::SliderInt("Samples", &m_pushConst.maxSamples, 1, 10);

PE::treePop();

}

PE::end();

}

if(ImGui::CollapsingHeader("Tonemapper"))

{

nvgui::tonemapperWidget(m_tonemapperData);

}

ImGui::End();

if(changed)

resetFrame();

}

{ // Rendering Viewport

ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2(0.0F, 0.0F));

ImGui::Begin("Viewport");

// Display the G-Buffer tonemapped image

ImGui::Image(m_viewportImage, ImGui::GetContentRegionAvail());

ImGui::End();

ImGui::PopStyleVar();

}

void onRender(VkCommandBuffer cmd) override

{

NVVK_DBG_SCOPE(cmd);

if(!updateFrame())

{

return;

}

// Update Camera uniform buffer

shaderio::CameraInfo cameraInfo{.projInv = glm::inverse(g_cameraManip->getPerspectiveMatrix()),

.viewInv = glm::inverse(g_cameraManip->getViewMatrix())};

vkCmdUpdateBuffer(cmd, m_bCameraInfo.buffer, 0, sizeof(shaderio::CameraInfo), &cameraInfo);

m_pushConst.frame = m_frame;

m_pushConst.light = m_light;

// Make sure buffer is ready to be used

nvvk::cmdMemoryBarrier(cmd, VK_PIPELINE_STAGE_2_TRANSFER_BIT, VK_PIPELINE_STAGE_2_COMPUTE_SHADER_BIT);

// Ray trace

const VkExtent2D& size = m_app->getViewportSize();

vkCmdBindPipeline(cmd, VK_PIPELINE_BIND_POINT_COMPUTE, m_pipeline);

pushDescriptorSet(cmd);

vkCmdPushConstants(cmd, m_pipelineLayout, VK_SHADER_STAGE_ALL, 0, sizeof(shaderio::PushConstant), &m_pushConst);

vkCmdDispatch(cmd, (size.width + (WORKGROUP_SIZE - 1)) / WORKGROUP_SIZE,

(size.height + (WORKGROUP_SIZE - 1)) / WORKGROUP_SIZE, 1);

// Making sure the rendered image is ready to be used by tonemapper

nvvk::cmdMemoryBarrier(cmd, VK_PIPELINE_STAGE_2_COMPUTE_SHADER_BIT, VK_PIPELINE_STAGE_2_COMPUTE_SHADER_BIT);

// Tonemap

m_tonemapper.runCompute(cmd, m_renderTarget.getSize(), m_tonemapperData,

m_renderTarget.getColorSampleDescriptorImageInfo(eImgRendered, m_linearSampler),

m_renderTarget.getColorSampleDescriptorImageInfo(eImgTonemapped));

}

private:

void createScene()

{

m_materials.push_back({{0.985f, 0.862f, 0.405f}, 0.5f, 0.0f});

m_materials.push_back({{0.9622f, 0.928f, 0.9728f}, 0.0f, 0.09f, 1.0f});

m_materials.push_back({{.7F, .7F, .7F}, 0.3f, 0.0f});

m_meshes.emplace_back(nvutils::createCube(1, 1, 1));

m_meshes.emplace_back(nvutils::createSphereUv(0.5f, 100, 100));

m_meshes.emplace_back(nvutils::createPlane(10, 100, 100));

// Instance Cube

{

auto& node = m_nodes.emplace_back();

node.mesh = 0;

node.material = 0;

node.translation = {0.0f, 0.5f, 0.0F};

}

// Instance Sphere

{

auto& node = m_nodes.emplace_back();

node.mesh = 1;

node.material = 1;

node.translation = {1.0f, 1.5f, 1.0F};

}

// Adding a plane & material

{

auto& node = m_nodes.emplace_back();

node.mesh = 2;

node.material = 2;

node.translation = {0.0f, 0.0f, 0.0f};

}

// Adding a light

m_light.intensity = 100.0f;

m_light.position = {2.0f, 7.0f, 2.0f};

m_light.radius = 0.2f;

// Setting camera to see the scene

g_cameraManip->setClipPlanes({0.1F, 100.0F});

g_cameraManip->setLookat({-2.0F, 2.5F, 3.0f}, {0.4F, 0.3F, 0.2F}, {0.0F, 1.0F, 0.0F});

// Default parameters for overall material

m_pushConst.maxDepth = 5;

m_pushConst.frame = 0;

m_pushConst.fireflyClampThreshold = 10;

m_pushConst.maxSamples = 2;

m_pushConst.light = m_light;

}

// Create all Vulkan buffer data

void createVkBuffers()

{

// NVTX3_FUNC_RANGE();

VkCommandBuffer cmd = m_app->createTempCmdBuffer();

nvvk::StagingUploader uploader;

uploader.init(&m_allocator, true);

m_bMeshes.resize(m_meshes.size());

VkBufferUsageFlags rtUsageFlag = VK_BUFFER_USAGE_2_STORAGE_BUFFER_BIT | VK_BUFFER_USAGE_2_SHADER_DEVICE_ADDRESS_BIT

| VK_BUFFER_USAGE_2_ACCELERATION_STRUCTURE_BUILD_INPUT_READ_ONLY_BIT_KHR;

// Create a buffer of Vertex and Index per mesh

std::vector<shaderio::PrimMeshInfo> primInfo;

for(size_t i = 0; i < m_meshes.size(); i++)

{

auto& m = m_bMeshes[i];

NVVK_CHECK(m_allocator.createBuffer(m.vertices, std::span(m_meshes[i].vertices).size_bytes(), rtUsageFlag));

NVVK_CHECK(m_allocator.createBuffer(m.indices, std::span(m_meshes[i].triangles).size_bytes(), rtUsageFlag));

NVVK_CHECK(uploader.appendBuffer(m.vertices, 0, std::span(m_meshes[i].vertices)));

NVVK_CHECK(uploader.appendBuffer(m.indices, 0, std::span(m_meshes[i].triangles)));

NVVK_DBG_NAME(m.vertices.buffer);

NVVK_DBG_NAME(m.indices.buffer);

// To find the buffers of the mesh (buffer reference)

shaderio::PrimMeshInfo info{

.vertexAddress = m.vertices.address,

.indexAddress = m.indices.address,

};

primInfo.emplace_back(info);

}

// Creating the buffer of all primitive/mesh information

NVVK_CHECK(m_allocator.createBuffer(m_bPrimInfo, std::span(primInfo).size_bytes(), rtUsageFlag));

NVVK_CHECK(uploader.appendBuffer(m_bPrimInfo, 0, std::span(primInfo)));

NVVK_DBG_NAME(m_bPrimInfo.buffer);

// Create the buffer of the current camera transformation, changing at each frame

NVVK_CHECK(m_allocator.createBuffer(m_bCameraInfo, sizeof(shaderio::CameraInfo),

VK_BUFFER_USAGE_2_UNIFORM_BUFFER_BIT, VMA_MEMORY_USAGE_AUTO_PREFER_HOST));

NVVK_DBG_NAME(m_bCameraInfo.buffer);

// Primitive instance information

std::vector<shaderio::InstanceInfo> instInfo;

for(auto& node : m_nodes)

{

shaderio::InstanceInfo info{

.transform = node.localMatrix(),

.materialID = node.material,

};

instInfo.emplace_back(info);

}

NVVK_CHECK(m_allocator.createBuffer(m_bInstInfoBuffer, std::span(instInfo).size_bytes(),

VK_BUFFER_USAGE_2_STORAGE_BUFFER_BIT | VK_BUFFER_USAGE_2_SHADER_DEVICE_ADDRESS_BIT));

NVVK_CHECK(uploader.appendBuffer(m_bInstInfoBuffer, 0, std::span(instInfo)));

NVVK_DBG_NAME(m_bInstInfoBuffer.buffer);

NVVK_CHECK(m_allocator.createBuffer(m_bMaterials, std::span(m_materials).size_bytes(),

VK_BUFFER_USAGE_2_STORAGE_BUFFER_BIT | VK_BUFFER_USAGE_2_SHADER_DEVICE_ADDRESS_BIT));

NVVK_CHECK(uploader.appendBuffer(m_bMaterials, 0, std::span(m_materials)));

NVVK_DBG_NAME(m_bMaterials.buffer);

// Buffer references of all scene elements

shaderio::SceneInfo sceneDesc{

.materialAddress = m_bMaterials.address,

.instInfoAddress = m_bInstInfoBuffer.address,

.primInfoAddress = m_bPrimInfo.address,

.light = m_light,

};

NVVK_CHECK(m_allocator.createBuffer(m_bSceneDesc, sizeof(shaderio::SceneInfo),

VK_BUFFER_USAGE_2_UNIFORM_BUFFER_BIT | VK_BUFFER_USAGE_2_SHADER_DEVICE_ADDRESS_BIT));

NVVK_CHECK(uploader.appendBuffer(m_bSceneDesc, 0, std::span(&sceneDesc, 1)));

NVVK_DBG_NAME(m_bSceneDesc.buffer);

uploader.cmdUploadAppended(cmd);

m_app->submitAndWaitTempCmdBuffer(cmd);

uploader.deinit();

}

//--------------------------------------------------------------------------------------------------

// Converting a PrimitiveMesh as input for BLAS

nvvk::AccelerationStructureGeometryInfo primitiveToGeometry(const nvutils::PrimitiveMesh& prim,

VkDeviceAddress vertexAddress,

VkDeviceAddress indexAddress)

{

nvvk::AccelerationStructureGeometryInfo result;

uint32_t maxPrimitiveCount = static_cast<uint32_t>(prim.triangles.size());

// Describe buffer as array of VertexObj.

VkAccelerationStructureGeometryTrianglesDataKHR triangles{

.sType = VK_STRUCTURE_TYPE_ACCELERATION_STRUCTURE_GEOMETRY_TRIANGLES_DATA_KHR,

.vertexFormat = VK_FORMAT_R32G32B32_SFLOAT, // vec3 vertex position data

.vertexData = {.deviceAddress = vertexAddress},

.vertexStride = sizeof(nvutils::PrimitiveVertex),

.maxVertex = static_cast<uint32_t>(prim.vertices.size()) - 1,

.indexType = VK_INDEX_TYPE_UINT32,

.indexData = {.deviceAddress = indexAddress},

};

// Identify the above data as containing opaque triangles.

result.geometry = VkAccelerationStructureGeometryKHR{

.sType = VK_STRUCTURE_TYPE_ACCELERATION_STRUCTURE_GEOMETRY_KHR,

.geometryType = VK_GEOMETRY_TYPE_TRIANGLES_KHR,

.geometry = {.triangles = triangles},

.flags = VK_GEOMETRY_NO_DUPLICATE_ANY_HIT_INVOCATION_BIT_KHR, //| VK_GEOMETRY_OPAQUE_BIT_KHR,

};

result.rangeInfo = VkAccelerationStructureBuildRangeInfoKHR{.primitiveCount = maxPrimitiveCount};

return result;

}

//--------------------------------------------------------------------------------------------------

// Create all bottom level acceleration structures (BLAS)

void createBottomLevelAS()

{

// NVTX3_FUNC_RANGE();

std::vector<nvvk::AccelerationStructureBuildData> blasData;

blasData.resize(m_meshes.size()); // Build Information for each BLAS

m_bottomAs.resize(m_meshes.size()); // The actual BLAS

// Convert all primitives to acceleration structures geometry

VkDeviceSize maxScratchSize{0};

for(uint32_t p_idx = 0; p_idx < m_meshes.size(); p_idx++)

{

auto vertexAddress = m_bMeshes[p_idx].vertices.address;

auto indexAddress = m_bMeshes[p_idx].indices.address;

blasData[p_idx].asType = VK_ACCELERATION_STRUCTURE_TYPE_BOTTOM_LEVEL_KHR;

blasData[p_idx].addGeometry(primitiveToGeometry(m_meshes[p_idx], vertexAddress, indexAddress));

VkAccelerationStructureBuildSizesInfoKHR sizeInfo =

blasData[p_idx].finalizeGeometry(m_device, VK_BUILD_ACCELERATION_STRUCTURE_PREFER_FAST_TRACE_BIT_KHR);

maxScratchSize = std::max(maxScratchSize, sizeInfo.buildScratchSize);

}

// Scratch buffer for all BLAS

nvvk::Buffer scratchBuffer;

NVVK_CHECK(m_allocator.createBuffer(scratchBuffer, maxScratchSize,

VK_BUFFER_USAGE_2_SHADER_DEVICE_ADDRESS_BIT | VK_BUFFER_USAGE_2_STORAGE_BUFFER_BIT,

VMA_MEMORY_USAGE_AUTO, {}, m_asProperties.minAccelerationStructureScratchOffsetAlignment));

NVVK_DBG_NAME(scratchBuffer.buffer);

// Create and build all BLAS

VkCommandBuffer cmd = m_app->createTempCmdBuffer();

for(size_t i = 0; i < m_bottomAs.size(); i++)

{

VkAccelerationStructureCreateInfoKHR createInfo = blasData[i].makeCreateInfo();

NVVK_CHECK(m_allocator.createAcceleration(m_bottomAs[i], createInfo));

NVVK_DBG_NAME(m_bottomAs[i].accel);

// cmdBuildAccelerationStructure inserts a barrier for scratch reuse between builds

blasData[i].cmdBuildAccelerationStructure(cmd, m_bottomAs[i].accel, scratchBuffer.address);

}

m_app->submitAndWaitTempCmdBuffer(cmd);

m_allocator.destroyBuffer(scratchBuffer);

}

//--------------------------------------------------------------------------------------------------

// Create the top level acceleration structures, referencing all BLAS

void createTopLevelAS()

{

// NVTX3_FUNC_RANGE();

nvvk::AccelerationStructureBuildData tlasData;

tlasData.asType = VK_ACCELERATION_STRUCTURE_TYPE_TOP_LEVEL_KHR;

std::vector<VkAccelerationStructureInstanceKHR> instances;

instances.reserve(m_nodes.size());

for(auto& node : m_nodes)

{

VkAccelerationStructureInstanceKHR rayInst{.transform = nvvk::toTransformMatrixKHR(node.localMatrix()), // Position of the instance

.instanceCustomIndex = static_cast<uint32_t>(node.mesh), // gl_InstanceCustomIndexEX

.mask = 0xFF,

.flags = VK_GEOMETRY_INSTANCE_TRIANGLE_CULL_DISABLE_BIT_NV,

.accelerationStructureReference = m_bottomAs[node.mesh].address};

instances.emplace_back(rayInst);

}

VkCommandBuffer cmd = m_app->createTempCmdBuffer();

nvvk::StagingUploader uploader;

uploader.init(&m_allocator);

// Create a buffer holding the actual instance data (matrices++) for use by the AS builder

nvvk::Buffer instancesBuffer;

NVVK_CHECK(m_allocator.createBuffer(instancesBuffer, std::span(instances).size_bytes(),

VK_BUFFER_USAGE_2_SHADER_DEVICE_ADDRESS_BIT

| VK_BUFFER_USAGE_2_ACCELERATION_STRUCTURE_BUILD_INPUT_READ_ONLY_BIT_KHR));

NVVK_CHECK(uploader.appendBuffer(instancesBuffer, 0, std::span(instances)));

NVVK_DBG_NAME(instancesBuffer.buffer);

uploader.cmdUploadAppended(cmd);

// AS build reads instance data (SHADER_READ) and writes the TLAS.

nvvk::accelerationStructureBarrier(cmd, VK_ACCESS_TRANSFER_WRITE_BIT,

VK_ACCESS_ACCELERATION_STRUCTURE_WRITE_BIT_KHR | VK_ACCESS_2_SHADER_READ_BIT);

auto instGeo = tlasData.makeInstanceGeometry(instances.size(), instancesBuffer.address);

tlasData.addGeometry(instGeo);

// Create the TLAS

auto sizeInfo = tlasData.finalizeGeometry(m_device, VK_BUILD_ACCELERATION_STRUCTURE_PREFER_FAST_TRACE_BIT_KHR);

nvvk::Buffer scratchBuffer;

NVVK_CHECK(m_allocator.createBuffer(scratchBuffer, sizeInfo.buildScratchSize,

VK_BUFFER_USAGE_2_STORAGE_BUFFER_BIT | VK_BUFFER_USAGE_2_SHADER_DEVICE_ADDRESS_BIT,

VMA_MEMORY_USAGE_AUTO, {}, m_asProperties.minAccelerationStructureScratchOffsetAlignment));

NVVK_DBG_NAME(scratchBuffer.buffer);

VkAccelerationStructureCreateInfoKHR createInfo = tlasData.makeCreateInfo();

NVVK_CHECK(m_allocator.createAcceleration(m_topAs, createInfo));

NVVK_DBG_NAME(m_topAs.accel);

tlasData.cmdBuildAccelerationStructure(cmd, m_topAs.accel, scratchBuffer.address);

uploader.cmdUploadAppended(cmd);

nvvk::accelerationStructureBarrier(cmd, VK_ACCESS_ACCELERATION_STRUCTURE_WRITE_BIT_KHR, VK_ACCESS_ACCELERATION_STRUCTURE_READ_BIT_KHR);

m_app->submitAndWaitTempCmdBuffer(cmd);

uploader.deinit();

m_allocator.destroyBuffer(instancesBuffer);

m_allocator.destroyBuffer(scratchBuffer);

}

//--------------------------------------------------------------------------------------------------

// Creating the pipeline: shader ...

void createCompPipelines()

{

// This descriptor set, holds the top level acceleration structure and the output image

m_descriptorBinding.addBinding(B_tlas, VK_DESCRIPTOR_TYPE_ACCELERATION_STRUCTURE_KHR, 1, VK_SHADER_STAGE_ALL);

m_descriptorBinding.addBinding(B_outImage, VK_DESCRIPTOR_TYPE_STORAGE_IMAGE, 1, VK_SHADER_STAGE_ALL);

m_descriptorBinding.addBinding(B_cameraInfo, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 1, VK_SHADER_STAGE_ALL);

m_descriptorBinding.addBinding(B_sceneDesc, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 1, VK_SHADER_STAGE_ALL);

NVVK_CHECK(m_descriptorBinding.createDescriptorSetLayout(m_device, VK_DESCRIPTOR_SET_LAYOUT_CREATE_PUSH_DESCRIPTOR_BIT_KHR,

&m_descriptorSetLayout));

NVVK_DBG_NAME(m_descriptorSetLayout);

// pushing time

const VkPushConstantRange pushConstant{.stageFlags = VK_SHADER_STAGE_ALL, .offset = 0, .size = sizeof(shaderio::PushConstant)};

NVVK_CHECK(nvvk::createPipelineLayout(m_device, &m_pipelineLayout, {m_descriptorSetLayout}, {pushConstant}));

#if USE_SLANG

VkShaderModuleCreateInfo moduleInfo = nvsamples::getShaderModuleCreateInfo(ray_query_slang);

#else

VkShaderModuleCreateInfo moduleInfo = nvsamples::getShaderModuleCreateInfo(ray_query_comp_glsl);

#endif

VkPipelineShaderStageCreateInfo shaderStage{

.sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO,

.pNext = &moduleInfo,

.stage = VK_SHADER_STAGE_COMPUTE_BIT,

.pName = "main",

};

VkComputePipelineCreateInfo cpCreateInfo{

.sType = VK_STRUCTURE_TYPE_COMPUTE_PIPELINE_CREATE_INFO,

.stage = shaderStage,

.layout = m_pipelineLayout,

};

NVVK_CHECK(vkCreateComputePipelines(m_device, {}, 1, &cpCreateInfo, nullptr, &m_pipeline));

NVVK_DBG_NAME(m_pipeline);

}

void pushDescriptorSet(VkCommandBuffer cmd)

{

// Write to descriptors

nvvk::WriteSetContainer writes{};

writes.append(m_descriptorBinding.getWriteSet(B_tlas), m_topAs);

writes.append(m_descriptorBinding.getWriteSet(B_outImage), m_renderTarget.getColorAttachmentView(eImgRendered),

VK_IMAGE_LAYOUT_GENERAL);

writes.append(m_descriptorBinding.getWriteSet(B_cameraInfo), m_bCameraInfo);

writes.append(m_descriptorBinding.getWriteSet(B_sceneDesc), m_bSceneDesc);

vkCmdPushDescriptorSetKHR(cmd, VK_PIPELINE_BIND_POINT_COMPUTE, m_pipelineLayout, 0,

static_cast<uint32_t>(writes.size()), writes.data());

}

//--------------------------------------------------------------------------------------------------

// To be call when renderer need to re-start

void resetFrame() { m_frame = -1; }

//--------------------------------------------------------------------------------------------------

// If the camera matrix has changed, resets the frame.

// otherwise, increments frame.

bool updateFrame()

{

static double ref_fov{0};

static glm::dmat4 ref_cam_matrix;

const auto& m = g_cameraManip->getViewMatrix();

const auto fov = g_cameraManip->getFov();

if(ref_cam_matrix != m || ref_fov != fov)

{

resetFrame();

ref_cam_matrix = m;

ref_fov = fov;

}

if(m_frame >= m_maxFrames)

{

return false;

}

m_frame++;

return true;

}

void destroyResources()

{

for(auto& m : m_bMeshes)

{

m_allocator.destroyBuffer(m.vertices);

m_allocator.destroyBuffer(m.indices);

}

m_allocator.destroyBuffer(m_bCameraInfo);

m_allocator.destroyBuffer(m_bPrimInfo);

m_allocator.destroyBuffer(m_bSceneDesc);

m_allocator.destroyBuffer(m_bInstInfoBuffer);

m_allocator.destroyBuffer(m_bMaterials);

m_viewportImage.deinit();

m_renderTarget.deinit();

for(auto& b : m_bottomAs)

{

m_allocator.destroyAcceleration(b);

}

m_allocator.destroyAcceleration(m_topAs);

vkDestroyPipelineLayout(m_device, m_pipelineLayout, nullptr);

vkDestroyPipeline(m_device, m_pipeline, nullptr);

vkDestroyDescriptorSetLayout(m_device, m_descriptorSetLayout, nullptr);

m_samplerPool.deinit();

m_tonemapper.deinit();

m_allocator.deinit();

}

void onLastHeadlessFrame() override

{

m_app->saveImageToFile(m_renderTarget.getColorImage(eImgTonemapped), m_renderTarget.getSize(),

nvutils::getExecutablePath().replace_extension(".jpg").string());

}

//--------------------------------------------------------------------------------------------------

nvapp::Application* m_app{};

nvvk::ResourceAllocator m_allocator;

nvshaders::Tonemapper m_tonemapper{};

shaderio::TonemapperData m_tonemapperData;

nvvk::RenderTarget m_renderTarget; // Offscreen target: tonemapped + rendered color images

nvapp::ImTexture m_viewportImage; // ImGui texture displaying the tonemapped image

VkSampler m_linearSampler{}; // Sampler used to feed the rendered image to the tonemapper

nvvk::SamplerPool m_samplerPool{}; // Sampler pool (sampler for the tonemapper input)

VkDevice m_device{}; // Vulkan device

// Resources

struct PrimitiveMeshVk

{

nvvk::Buffer vertices; // Buffer of the vertices

nvvk::Buffer indices; // Buffer of the indices

};

std::vector<PrimitiveMeshVk> m_bMeshes;

nvvk::Buffer m_bCameraInfo; // Camera information

nvvk::Buffer m_bPrimInfo; // Buffer of all PrimitiveMeshVk

nvvk::Buffer m_bSceneDesc; // Scene description with pointers to the buffers

nvvk::Buffer m_bInstInfoBuffer; // Transformation and material per instance

nvvk::Buffer m_bMaterials; // All materials

// Data and setting

std::vector<nvutils::PrimitiveMesh> m_meshes;

std::vector<nvutils::Node> m_nodes;

std::vector<shaderio::Material> m_materials;

shaderio::Light m_light = {};

// Pipeline

shaderio::PushConstant m_pushConst{}; // Information sent to the shader

int m_frame{0};

int m_maxFrames{10000};

// Pipeline

nvvk::DescriptorBindings m_descriptorBinding{};

VkDescriptorSetLayout m_descriptorSetLayout{};

VkPipeline m_pipeline{};

VkPipelineLayout m_pipelineLayout{};

VkPhysicalDeviceRayTracingPipelinePropertiesKHR m_rtProperties{VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_RAY_TRACING_PIPELINE_PROPERTIES_KHR};

VkPhysicalDeviceAccelerationStructurePropertiesKHR m_asProperties{VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_ACCELERATION_STRUCTURE_PROPERTIES_KHR};

// Acceleration Structures

std::vector<nvvk::AccelerationStructure> m_bottomAs;

nvvk::AccelerationStructure m_topAs;

};

//////////////////////////////////////////////////////////////////////////

///

auto main(int argc, char** argv) -> int

{

nvapp::ApplicationCreateInfo appInfo;

nvutils::ParameterParser cli(nvutils::getExecutablePath().stem().string());

nvutils::ParameterRegistry reg;

bool verbose = false;

reg.add({"verbose", "Verbose output of the Vulkan context"}, &verbose);

reg.add({"headless"}, &appInfo.headless, true);

reg.add({"frames", "Number of frames to run in headless mode"}, &appInfo.headlessFrameCount);

cli.add(reg);

cli.parse(argc, argv);

// #VKRay: Activate the ray tracing extension

// Extension feature needed.

VkPhysicalDeviceAccelerationStructureFeaturesKHR accelFeature{VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_ACCELERATION_STRUCTURE_FEATURES_KHR};

VkPhysicalDeviceRayTracingPipelineFeaturesKHR rtPipelineFeature{VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_RAY_TRACING_PIPELINE_FEATURES_KHR};

VkPhysicalDeviceRayQueryFeaturesKHR rayqueryFeature{VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_RAY_QUERY_FEATURES_KHR};

VkPhysicalDeviceShaderObjectFeaturesEXT shaderObjFeature{VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SHADER_OBJECT_FEATURES_EXT};

nvvk::ContextInitInfo vkSetup{

.instanceExtensions = {VK_EXT_DEBUG_UTILS_EXTENSION_NAME},

.deviceExtensions = {{VK_KHR_PUSH_DESCRIPTOR_EXTENSION_NAME},

{VK_KHR_DEFERRED_HOST_OPERATIONS_EXTENSION_NAME},

{VK_KHR_PUSH_DESCRIPTOR_EXTENSION_NAME},

{VK_KHR_ACCELERATION_STRUCTURE_EXTENSION_NAME, &accelFeature},

{VK_KHR_RAY_TRACING_PIPELINE_EXTENSION_NAME, &rtPipelineFeature},

{VK_EXT_SHADER_OBJECT_EXTENSION_NAME, &shaderObjFeature},

{VK_KHR_RAY_QUERY_EXTENSION_NAME, &rayqueryFeature}},

};

if(!appInfo.headless)

{

nvvk::addSurfaceExtensions(vkSetup.instanceExtensions);

vkSetup.deviceExtensions.emplace_back(VK_KHR_SWAPCHAIN_EXTENSION_NAME);

}

// Create the Vulkan context

nvvk::Context vkContext;

vkSetup.verbose |= verbose;

if(vkContext.init(vkSetup) != VK_SUCCESS)

{

LOGE("Error in Vulkan context creation\n");

return 1;

}

// Application settings

appInfo.name = fmt::format("{} ({})", nvutils::getExecutablePath().stem().string(), SHADER_LANGUAGE_STR);

appInfo.vSync = false;

appInfo.instance = vkContext.getInstance();

appInfo.device = vkContext.getDevice();

appInfo.physicalDevice = vkContext.getPhysicalDevice();

appInfo.queues = vkContext.getQueueInfos();

// Create the application

nvapp::Application app;

app.init(appInfo);

// Add all application elements

auto elemCamera = std::make_shared<nvapp::ElementCamera>();

g_cameraManip = std::make_shared<nvutils::CameraManipulator>();

elemCamera->setCameraManipulator(g_cameraManip);

app.addElement(elemCamera);

app.addElement(std::make_shared<nvapp::ElementDefaultMenu>()); // Menu / Quit

app.addElement(std::make_shared<nvapp::ElementDefaultWindowTitle>("", appInfo.name)); // Window title info

app.addElement(std::make_shared<RayQuery>());

app.run();

app.deinit();

vkContext.deinit();

return 0;

}

vk_mini_samples/samples/ray_query/ray_query.cpp at main · nvpro-samples/vk_mini_samples · GitHub

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