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/*
* Copyright (c) 2023-2025 Valve Corporation
* Copyright (c) 2023-2025 LunarG, Inc.
*
* 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
*/
#include "ray_tracing_helper_nv.h"
namespace nv {
namespace rt {
RayTracingPipelineHelper::RayTracingPipelineHelper(VkLayerTest &test) : layer_test_(test) { InitInfo(); }
RayTracingPipelineHelper::~RayTracingPipelineHelper() {
VkDevice device = layer_test_.device();
if (pipeline_cache_ != VK_NULL_HANDLE) {
vk::DestroyPipelineCache(device, pipeline_cache_, nullptr);
pipeline_cache_ = VK_NULL_HANDLE;
}
if (pipeline_ != VK_NULL_HANDLE) {
vk::DestroyPipeline(device, pipeline_, nullptr);
pipeline_ = VK_NULL_HANDLE;
}
}
void RayTracingPipelineHelper::InitShaderGroups() {
{
VkRayTracingShaderGroupCreateInfoNV group = vku::InitStructHelper();
group.type = VK_RAY_TRACING_SHADER_GROUP_TYPE_GENERAL_NV;
group.generalShader = 0;
group.closestHitShader = VK_SHADER_UNUSED_NV;
group.anyHitShader = VK_SHADER_UNUSED_NV;
group.intersectionShader = VK_SHADER_UNUSED_NV;
groups_.push_back(group);
}
{
VkRayTracingShaderGroupCreateInfoNV group = vku::InitStructHelper();
group.type = VK_RAY_TRACING_SHADER_GROUP_TYPE_TRIANGLES_HIT_GROUP_NV;
group.generalShader = VK_SHADER_UNUSED_NV;
group.closestHitShader = 1;
group.anyHitShader = VK_SHADER_UNUSED_NV;
group.intersectionShader = VK_SHADER_UNUSED_NV;
groups_.push_back(group);
}
{
VkRayTracingShaderGroupCreateInfoNV group = vku::InitStructHelper();
group.type = VK_RAY_TRACING_SHADER_GROUP_TYPE_GENERAL_NV;
group.generalShader = 2;
group.closestHitShader = VK_SHADER_UNUSED_NV;
group.anyHitShader = VK_SHADER_UNUSED_NV;
group.intersectionShader = VK_SHADER_UNUSED_NV;
groups_.push_back(group);
}
}
void RayTracingPipelineHelper::InitDescriptorSetInfo() {
dsl_bindings_ = {
{0, VK_DESCRIPTOR_TYPE_STORAGE_IMAGE, 1, VK_SHADER_STAGE_RAYGEN_BIT_NV, nullptr},
{1, VK_DESCRIPTOR_TYPE_ACCELERATION_STRUCTURE_NV, 1, VK_SHADER_STAGE_RAYGEN_BIT_NV, nullptr},
};
}
void RayTracingPipelineHelper::InitDescriptorSetInfoKHR() {
dsl_bindings_ = {
{0, VK_DESCRIPTOR_TYPE_STORAGE_IMAGE, 1, VK_SHADER_STAGE_RAYGEN_BIT_KHR, nullptr},
{1, VK_DESCRIPTOR_TYPE_ACCELERATION_STRUCTURE_KHR, 1, VK_SHADER_STAGE_RAYGEN_BIT_KHR, nullptr},
};
}
void RayTracingPipelineHelper::InitPipelineLayoutInfo() {
pipeline_layout_ci_ = vku::InitStructHelper();
pipeline_layout_ci_.setLayoutCount = 1; // Not really changeable because InitState() sets exactly one pSetLayout
pipeline_layout_ci_.pSetLayouts = nullptr; // must bound after it is created
}
void RayTracingPipelineHelper::InitShaderInfo() { // DONE
static const char rayGenShaderText[] = R"glsl(
#version 460 core
#extension GL_NV_ray_tracing : require
layout(set = 0, binding = 0, rgba8) uniform image2D image;
layout(set = 0, binding = 1) uniform accelerationStructureNV as;
layout(location = 0) rayPayloadNV float payload;
void main()
{
vec4 col = vec4(0, 0, 0, 1);
vec3 origin = vec3(float(gl_LaunchIDNV.x)/float(gl_LaunchSizeNV.x), float(gl_LaunchIDNV.y)/float(gl_LaunchSizeNV.y), 1.0);
vec3 dir = vec3(0.0, 0.0, -1.0);
payload = 0.5;
traceNV(as, gl_RayFlagsCullBackFacingTrianglesNV, 0xff, 0, 1, 0, origin, 0.0, dir, 1000.0, 0);
col.y = payload;
imageStore(image, ivec2(gl_LaunchIDNV.xy), col);
}
)glsl";
static char const closestHitShaderText[] = R"glsl(
#version 460 core
#extension GL_NV_ray_tracing : require
layout(location = 0) rayPayloadInNV float hitValue;
void main() {
hitValue = 1.0;
}
)glsl";
static char const missShaderText[] = R"glsl(
#version 460 core
#extension GL_NV_ray_tracing : require
layout(location = 0) rayPayloadInNV float hitValue;
void main() {
hitValue = 0.0;
}
)glsl";
rgs_ = std::make_unique<VkShaderObj>(&layer_test_, rayGenShaderText, VK_SHADER_STAGE_RAYGEN_BIT_NV);
chs_ = std::make_unique<VkShaderObj>(&layer_test_, closestHitShaderText, VK_SHADER_STAGE_CLOSEST_HIT_BIT_NV);
mis_ = std::make_unique<VkShaderObj>(&layer_test_, missShaderText, VK_SHADER_STAGE_MISS_BIT_NV);
shader_stages_ = {rgs_->GetStageCreateInfo(), chs_->GetStageCreateInfo(), mis_->GetStageCreateInfo()};
}
void RayTracingPipelineHelper::InitNVRayTracingPipelineInfo() {
rp_ci_ = vku::InitStructHelper();
rp_ci_.maxRecursionDepth = 0;
rp_ci_.stageCount = shader_stages_.size();
rp_ci_.pStages = shader_stages_.data();
rp_ci_.groupCount = groups_.size();
rp_ci_.pGroups = groups_.data();
}
void RayTracingPipelineHelper::AddLibrary(const RayTracingPipelineHelper &library) {
libraries_.emplace_back(library.Handle());
rp_library_ci_ = vku::InitStructHelper();
rp_library_ci_.libraryCount = size32(libraries_);
rp_library_ci_.pLibraries = libraries_.data();
rp_ci_KHR_.pLibraryInfo = &rp_library_ci_;
}
void RayTracingPipelineHelper::InitPipelineCacheInfo() {
pc_ci_ = vku::InitStructHelper();
pc_ci_.flags = 0;
pc_ci_.initialDataSize = 0;
pc_ci_.pInitialData = nullptr;
}
void RayTracingPipelineHelper::InitInfo() {
InitShaderGroups();
InitDescriptorSetInfo();
InitPipelineLayoutInfo();
InitShaderInfo();
InitNVRayTracingPipelineInfo();
InitPipelineCacheInfo();
}
void RayTracingPipelineHelper::InitPipelineCache() {
if (pipeline_cache_ != VK_NULL_HANDLE) {
vk::DestroyPipelineCache(layer_test_.device(), pipeline_cache_, nullptr);
}
VkResult err = vk::CreatePipelineCache(layer_test_.device(), &pc_ci_, NULL, &pipeline_cache_);
ASSERT_EQ(VK_SUCCESS, err);
}
void RayTracingPipelineHelper::LateBindPipelineInfo(bool isKHR) {
// By value or dynamically located items must be late bound
descriptor_set_.reset(new OneOffDescriptorSet(layer_test_.DeviceObj(), dsl_bindings_));
ASSERT_TRUE(descriptor_set_->Initialized());
pipeline_layout_ = vkt::PipelineLayout(*layer_test_.DeviceObj(), {&descriptor_set_->layout_});
if (isKHR) {
rp_ci_KHR_.layout = pipeline_layout_.handle();
rp_ci_KHR_.stageCount = shader_stages_.size();
rp_ci_KHR_.pStages = shader_stages_.data();
} else {
rp_ci_.layout = pipeline_layout_.handle();
rp_ci_.stageCount = shader_stages_.size();
rp_ci_.pStages = shader_stages_.data();
}
}
VkResult RayTracingPipelineHelper::CreateNVRayTracingPipeline(bool do_late_bind) {
InitPipelineCache();
if (do_late_bind) {
LateBindPipelineInfo();
}
PFN_vkCreateRayTracingPipelinesNV vkCreateRayTracingPipelinesNV =
(PFN_vkCreateRayTracingPipelinesNV)vk::GetInstanceProcAddr(layer_test_.instance(), "vkCreateRayTracingPipelinesNV");
return vkCreateRayTracingPipelinesNV(layer_test_.device(), pipeline_cache_, 1, &rp_ci_, nullptr, &pipeline_);
}
void GetSimpleGeometryForAccelerationStructureTests(const vkt::Device &device, vkt::Buffer *vbo, vkt::Buffer *ibo,
VkGeometryNV *geometry, VkDeviceSize offset, bool buffer_device_address) {
VkBufferUsageFlags usage = VK_BUFFER_USAGE_RAY_TRACING_BIT_NV;
VkMemoryAllocateFlagsInfo alloc_flags = vku::InitStructHelper();
void *alloc_pnext = nullptr;
if (buffer_device_address) {
usage |= VK_BUFFER_USAGE_SHADER_DEVICE_ADDRESS_BIT;
alloc_flags.flags = VK_MEMORY_ALLOCATE_DEVICE_ADDRESS_BIT;
alloc_pnext = &alloc_flags;
}
vbo->Init(device, 1024, usage, kHostVisibleMemProps, alloc_pnext);
ibo->Init(device, 1024, usage, kHostVisibleMemProps, alloc_pnext);
constexpr std::array vertices = {1.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, -1.0f, 0.0f, 0.0f};
constexpr std::array<uint32_t, 3> indicies = {{0, 1, 2}};
uint8_t *mapped_vbo_buffer_data = (uint8_t *)vbo->Memory().Map();
std::memcpy(mapped_vbo_buffer_data + offset, (uint8_t *)vertices.data(), sizeof(float) * vertices.size());
vbo->Memory().Unmap();
uint8_t *mapped_ibo_buffer_data = (uint8_t *)ibo->Memory().Map();
std::memcpy(mapped_ibo_buffer_data + offset, (uint8_t *)indicies.data(), sizeof(uint32_t) * indicies.size());
ibo->Memory().Unmap();
*geometry = {};
geometry->sType = VK_STRUCTURE_TYPE_GEOMETRY_NV;
geometry->geometryType = VK_GEOMETRY_TYPE_TRIANGLES_NV;
geometry->geometry.triangles.sType = VK_STRUCTURE_TYPE_GEOMETRY_TRIANGLES_NV;
geometry->geometry.triangles.vertexData = vbo->handle();
geometry->geometry.triangles.vertexOffset = 0;
geometry->geometry.triangles.vertexCount = 3;
geometry->geometry.triangles.vertexStride = 12;
geometry->geometry.triangles.vertexFormat = VK_FORMAT_R32G32B32_SFLOAT;
geometry->geometry.triangles.indexData = ibo->handle();
geometry->geometry.triangles.indexOffset = 0;
geometry->geometry.triangles.indexCount = 3;
geometry->geometry.triangles.indexType = VK_INDEX_TYPE_UINT32;
geometry->geometry.triangles.transformData = VK_NULL_HANDLE;
geometry->geometry.triangles.transformOffset = 0;
geometry->geometry.aabbs = {};
geometry->geometry.aabbs.sType = VK_STRUCTURE_TYPE_GEOMETRY_AABB_NV;
}
} // namespace rt
} // namespace nv
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