diff --git a/include/vkcv/Core.hpp b/include/vkcv/Core.hpp
index c24d4c7cc435389c739bf47f7316586b5d6c676c..028f8bcc10c3483c417462bc9382e45ae24e74d6 100644
--- a/include/vkcv/Core.hpp
+++ b/include/vkcv/Core.hpp
@@ -339,6 +339,33 @@ namespace vkcv
const std::vector<MeshShaderDrawcall>& drawcalls,
const std::vector<ImageHandle>& renderTargets,
const WindowHandle& windowHandle);
+
+
+ /**
+ * Records the rtx ray generation to the @p cmdStreamHandle.
+ * Currently only supports @p closestHit, @p rayGen and @c miss shaderstages @c.
+ * @param cmdStreamHandle The command stream handle which receives relevant commands for drawing.
+ * @param rtxPipeline The raytracing pipeline from the RTXModule.
+ * @param rtxPipelineLayout The raytracing pipeline layout from the RTXModule.
+ * @param rgenRegion The shader binding table region for ray generation shaders.
+ * @param rmissRegion The shader binding table region for ray miss shaders.
+ * @param rchitRegion The shader binding table region for ray closest hit shaders.
+ * @param rcallRegion The shader binding table region for callable shaders.
+ * @param descriptorSetUsages The descriptor set usages.
+ * @param pushConstants The push constants.
+ * @param windowHandle The window handle defining in which window to render.
+ */
+ void recordRayGenerationToCmdStream(
+ CommandStreamHandle cmdStreamHandle,
+ vk::Pipeline rtxPipeline,
+ vk::PipelineLayout rtxPipelineLayout,
+ vk::StridedDeviceAddressRegionKHR rgenRegion,
+ vk::StridedDeviceAddressRegionKHR rmissRegion,
+ vk::StridedDeviceAddressRegionKHR rchitRegion,
+ vk::StridedDeviceAddressRegionKHR rcallRegion,
+ const std::vector<DescriptorSetUsage>& descriptorSetUsages,
+ const PushConstants& pushConstants,
+ const WindowHandle windowHandle);
void recordComputeDispatchToCmdStream(
CommandStreamHandle cmdStream,
diff --git a/include/vkcv/DescriptorConfig.hpp b/include/vkcv/DescriptorConfig.hpp
index 2fac0a24e24260fee9b5936243535110cb228dbe..735f973777a6ef41951c7ef52350f9ddc5b1200c 100644
--- a/include/vkcv/DescriptorConfig.hpp
+++ b/include/vkcv/DescriptorConfig.hpp
@@ -19,7 +19,8 @@ namespace vkcv
IMAGE_SAMPLED,
IMAGE_STORAGE,
UNIFORM_BUFFER_DYNAMIC,
- STORAGE_BUFFER_DYNAMIC
+ STORAGE_BUFFER_DYNAMIC,
+ ACCELERATION_STRUCTURE_KHR
};
/**
@@ -44,6 +45,8 @@ namespace vkcv
return vk::DescriptorType::eSampledImage;
case DescriptorType::IMAGE_STORAGE:
return vk::DescriptorType::eStorageImage;
+ case DescriptorType::ACCELERATION_STRUCTURE_KHR:
+ return vk::DescriptorType::eAccelerationStructureKHR;
default:
return vk::DescriptorType::eMutableVALVE;
}
diff --git a/include/vkcv/DescriptorWrites.hpp b/include/vkcv/DescriptorWrites.hpp
index 28de2ed7fa6b7e71bfa49b67a337f80f2e05ddcf..457e8952d0fcb2dbe0ad281f6f8018575c4f4ede 100644
--- a/include/vkcv/DescriptorWrites.hpp
+++ b/include/vkcv/DescriptorWrites.hpp
@@ -37,11 +37,20 @@ namespace vkcv {
SamplerHandle sampler;
};
+ /**
+ * @brief Only used for RTX. Used to bind the Acceleration Structure.
+ */
+ struct AccelerationDescriptorWrite {
+ inline AccelerationDescriptorWrite(uint32_t binding) : binding(binding) {};
+ uint32_t binding;
+ };
+
struct DescriptorWrites {
std::vector<SampledImageDescriptorWrite> sampledImageWrites;
std::vector<StorageImageDescriptorWrite> storageImageWrites;
std::vector<BufferDescriptorWrite> uniformBufferWrites;
std::vector<BufferDescriptorWrite> storageBufferWrites;
std::vector<SamplerDescriptorWrite> samplerWrites;
+ std::vector<AccelerationDescriptorWrite> accelerationWrites;
};
}
\ No newline at end of file
diff --git a/include/vkcv/FeatureManager.hpp b/include/vkcv/FeatureManager.hpp
index 600abc9e975ca9ed902fbc27c285315d0d6c0a9a..e9abd69009da1120284aefeb375dd380abd20201 100644
--- a/include/vkcv/FeatureManager.hpp
+++ b/include/vkcv/FeatureManager.hpp
@@ -78,6 +78,42 @@ namespace vkcv {
[[nodiscard]]
bool checkSupport(const vk::PhysicalDeviceMeshShaderFeaturesNV& features, bool required) const;
+
+ /**
+ * @brief Currently used for RTX. Checks support of the @p vk::PhysicalDeviceVulkan12Features.
+ * @param features The features.
+ * @param required True, if the @p features are required, else false.
+ * @return @p True, if the @p features are supported, else @p false.
+ */
+ [[nodiscard]]
+ bool checkSupport(const vk::PhysicalDeviceVulkan12Features& features, bool required) const;
+
+ /**
+ * @brief Currently used for RTX. Checks support of the @p vk::PhysicalDeviceVulkan11Features.
+ * @param features The features.
+ * @param required True, if the @p features are required, else false.
+ * @return @p True, if the @p features are supported, else @p false.
+ */
+ [[nodiscard]]
+ bool checkSupport(const vk::PhysicalDeviceVulkan11Features& features, bool required) const;
+
+ /**
+ * @brief Only used for RTX. Checks support of the @p vk::PhysicalDeviceAccelerationStructureFeaturesKHR.
+ * @param features The features.
+ * @param required True, if the @p features are required, else false.
+ * @return @p True, if the @p features are supported, else @p false.
+ */
+ [[nodiscard]]
+ bool checkSupport(const vk::PhysicalDeviceAccelerationStructureFeaturesKHR& features, bool required) const;
+
+ /**
+ * @brief Only used for RTX. Checks support of the @p vk::PhysicalDeviceRayTracingPipelineFeaturesKHR.
+ * @param features The features.
+ * @param required True, if the @p features are required, else false.
+ * @return @p True, if the @p features are supported, else @p false.
+ */
+ [[nodiscard]]
+ bool checkSupport(const vk::PhysicalDeviceRayTracingPipelineFeaturesKHR& features, bool required) const;
vk::BaseOutStructure* findFeatureStructure(vk::StructureType type) const;
diff --git a/include/vkcv/ShaderStage.hpp b/include/vkcv/ShaderStage.hpp
index 52ba5a7e56ed40efda96c27dfd92734880b88f18..0baaaf5b57fcc510159b8620e3119e4749467093 100644
--- a/include/vkcv/ShaderStage.hpp
+++ b/include/vkcv/ShaderStage.hpp
@@ -12,7 +12,13 @@ namespace vkcv {
FRAGMENT = static_cast<VkShaderStageFlags>(vk::ShaderStageFlagBits::eFragment),
COMPUTE = static_cast<VkShaderStageFlags>(vk::ShaderStageFlagBits::eCompute),
TASK = static_cast<VkShaderStageFlags>(vk::ShaderStageFlagBits::eTaskNV),
- MESH = static_cast<VkShaderStageFlags>(vk::ShaderStageFlagBits::eMeshNV)
+ MESH = static_cast<VkShaderStageFlags>(vk::ShaderStageFlagBits::eMeshNV),
+ RAY_GEN = static_cast<VkShaderStageFlags>(vk::ShaderStageFlagBits::eRaygenKHR), // RTX
+ RAY_ANY_HIT = static_cast<VkShaderStageFlags>(vk::ShaderStageFlagBits::eAnyHitKHR), // RTX
+ RAY_CLOSEST_HIT = static_cast<VkShaderStageFlags>(vk::ShaderStageFlagBits::eClosestHitKHR), // RTX
+ RAY_MISS = static_cast<VkShaderStageFlags>(vk::ShaderStageFlagBits::eMissKHR), // RTX
+ RAY_INTERSECTION = static_cast<VkShaderStageFlags>(vk::ShaderStageFlagBits::eIntersectionKHR), // RTX
+ RAY_CALLABLE = static_cast<VkShaderStageFlags>(vk::ShaderStageFlagBits::eCallableKHR) // RTX
};
using ShaderStages = vk::Flags<ShaderStage>;
diff --git a/modules/camera/include/vkcv/camera/CameraManager.hpp b/modules/camera/include/vkcv/camera/CameraManager.hpp
index 409f9196599be02e4215f3924c1102f0b8c72899..c0777b09544893aa38cf11396c1cf60bd800a837 100644
--- a/modules/camera/include/vkcv/camera/CameraManager.hpp
+++ b/modules/camera/include/vkcv/camera/CameraManager.hpp
@@ -117,7 +117,7 @@ namespace vkcv::camera {
* @brief The constructor of the #CameraManager.
* @param[in] window The window.
*/
- CameraManager(Window &window);
+ explicit CameraManager(Window &window);
/**
* @brief The destructor of the #CameraManager. Destroying the #CameraManager leads to deletion of all stored
diff --git a/modules/camera/src/vkcv/camera/Camera.cpp b/modules/camera/src/vkcv/camera/Camera.cpp
index 87d09aa9a6e3e7dc80d5de9a95f3e1e3b72e9205..25b2a7339a46de8ced171c8ee9c10f962c3c0399 100644
--- a/modules/camera/src/vkcv/camera/Camera.cpp
+++ b/modules/camera/src/vkcv/camera/Camera.cpp
@@ -164,4 +164,4 @@ namespace vkcv::camera {
setAngles(glm::radians(getPitch()), glm::radians(yaw));
}
-}
\ No newline at end of file
+}
diff --git a/modules/shader_compiler/src/vkcv/shader/GLSLCompiler.cpp b/modules/shader_compiler/src/vkcv/shader/GLSLCompiler.cpp
index 16067aebedfda8793a0096803ba5344275bcbbcd..c639118f5a4482eb9db2cee46057e5662b472181 100644
--- a/modules/shader_compiler/src/vkcv/shader/GLSLCompiler.cpp
+++ b/modules/shader_compiler/src/vkcv/shader/GLSLCompiler.cpp
@@ -56,6 +56,18 @@ namespace vkcv::shader {
return EShLangTaskNV;
case ShaderStage::MESH:
return EShLangMeshNV;
+ case ShaderStage::RAY_GEN: // for RTX
+ return EShLangRayGen;
+ case ShaderStage::RAY_CLOSEST_HIT: // for RTX
+ return EShLangClosestHit;
+ case ShaderStage::RAY_MISS: // for RTX
+ return EShLangMiss;
+ case ShaderStage::RAY_INTERSECTION: // for RTX
+ return EShLangIntersect;
+ case ShaderStage::RAY_ANY_HIT: // for RTX
+ return EShLangAnyHit;
+ case ShaderStage::RAY_CALLABLE: // for RTX
+ return EShLangCallable;
default:
return EShLangCount;
}
@@ -214,6 +226,16 @@ namespace vkcv::shader {
}
glslang::TShader shader (language);
+
+ // configure environment for rtx shaders by adjusting versions of Vulkan and SPIR-V, else rtx shader cannot be compiled.
+ if((shaderStage == ShaderStage::RAY_GEN) || (shaderStage == ShaderStage::RAY_ANY_HIT)
+ || (shaderStage == ShaderStage::RAY_CLOSEST_HIT) || (shaderStage == ShaderStage::RAY_MISS)
+ || (shaderStage == ShaderStage::RAY_INTERSECTION) || (shaderStage == ShaderStage::RAY_CALLABLE)){
+
+ shader.setEnvClient(glslang::EShClientVulkan,glslang::EShTargetVulkan_1_2);
+ shader.setEnvTarget(glslang::EShTargetSpv,glslang::EShTargetSpv_1_4);
+ }
+
glslang::TProgram program;
std::string source (shaderSource);
diff --git a/projects/CMakeLists.txt b/projects/CMakeLists.txt
index 460766ad31045c5ac37d6aa8ccffc614a8921fdc..52d4a4a21f001b9feaab917fcdac4d52c6bf7e63 100644
--- a/projects/CMakeLists.txt
+++ b/projects/CMakeLists.txt
@@ -4,6 +4,7 @@ add_subdirectory(first_triangle)
add_subdirectory(first_mesh)
add_subdirectory(first_scene)
add_subdirectory(particle_simulation)
+add_subdirectory(rtx_ambient_occlusion)
add_subdirectory(sph)
add_subdirectory(voxelization)
add_subdirectory(mesh_shader)
diff --git a/projects/path_tracer/src/main.cpp b/projects/path_tracer/src/main.cpp
index c3b21f78cea479a463fb6224605a202d35d8e581..6da36cd6ad03bb7e54e7a57bbf7d4d992607ed52 100644
--- a/projects/path_tracer/src/main.cpp
+++ b/projects/path_tracer/src/main.cpp
@@ -44,21 +44,22 @@ int main(int argc, const char** argv) {
const char* applicationName = "Path Tracer";
- const int initialWidth = 1280;
- const int initialHeight = 720;
- vkcv::Window window = vkcv::Window::create(
- applicationName,
- initialWidth,
- initialHeight,
- true);
-
vkcv::Core core = vkcv::Core::create(
- window,
applicationName,
VK_MAKE_VERSION(0, 0, 1),
{ vk::QueueFlagBits::eTransfer,vk::QueueFlagBits::eGraphics, vk::QueueFlagBits::eCompute },
{ "VK_KHR_swapchain" }
);
+
+ const int initialWidth = 1280;
+ const int initialHeight = 720;
+
+ vkcv::WindowHandle windowHandle = core.createWindow(
+ applicationName,
+ initialWidth,
+ initialHeight,
+ true
+ );
// images
vkcv::ImageHandle outputImage = core.createImage(
@@ -100,9 +101,10 @@ int main(int argc, const char** argv) {
const vkcv::DescriptorBindings& imageCombineDescriptorBindings = imageCombineShaderProgram.getReflectedDescriptors().at(0);
vkcv::DescriptorSetLayoutHandle imageCombineDescriptorSetLayout = core.createDescriptorSetLayout(imageCombineDescriptorBindings);
vkcv::DescriptorSetHandle imageCombineDescriptorSet = core.createDescriptorSet(imageCombineDescriptorSetLayout);
- vkcv::PipelineHandle imageCombinePipeline = core.createComputePipeline(
+ vkcv::ComputePipelineHandle imageCombinePipeline = core.createComputePipeline({
imageCombineShaderProgram,
- { core.getDescriptorSetLayout(imageCombineDescriptorSetLayout).vulkanHandle });
+ { core.getDescriptorSetLayout(imageCombineDescriptorSetLayout).vulkanHandle }
+ });
vkcv::DescriptorWrites imageCombineDescriptorWrites;
imageCombineDescriptorWrites.storageImageWrites = {
@@ -121,9 +123,10 @@ int main(int argc, const char** argv) {
const vkcv::DescriptorBindings& presentDescriptorBindings = presentShaderProgram.getReflectedDescriptors().at(0);
vkcv::DescriptorSetLayoutHandle presentDescriptorSetLayout = core.createDescriptorSetLayout(presentDescriptorBindings);
vkcv::DescriptorSetHandle presentDescriptorSet = core.createDescriptorSet(presentDescriptorSetLayout);
- vkcv::PipelineHandle presentPipeline = core.createComputePipeline(
+ vkcv::ComputePipelineHandle presentPipeline = core.createComputePipeline({
presentShaderProgram,
- { core.getDescriptorSetLayout(presentDescriptorSetLayout).vulkanHandle });
+ { core.getDescriptorSetLayout(presentDescriptorSetLayout).vulkanHandle }
+ });
// clear shader
vkcv::ShaderProgram clearShaderProgram{};
@@ -135,9 +138,10 @@ int main(int argc, const char** argv) {
const vkcv::DescriptorBindings& imageClearDescriptorBindings = clearShaderProgram.getReflectedDescriptors().at(0);
vkcv::DescriptorSetLayoutHandle imageClearDescriptorSetLayout = core.createDescriptorSetLayout(imageClearDescriptorBindings);
vkcv::DescriptorSetHandle imageClearDescriptorSet = core.createDescriptorSet(imageClearDescriptorSetLayout);
- vkcv::PipelineHandle imageClearPipeline = core.createComputePipeline(
+ vkcv::ComputePipelineHandle imageClearPipeline = core.createComputePipeline({
clearShaderProgram,
- { core.getDescriptorSetLayout(imageClearDescriptorSetLayout).vulkanHandle });
+ { core.getDescriptorSetLayout(imageClearDescriptorSetLayout).vulkanHandle }
+ });
vkcv::DescriptorWrites imageClearDescriptorWrites;
imageClearDescriptorWrites.storageImageWrites = {
@@ -197,9 +201,10 @@ int main(int argc, const char** argv) {
vkcv::StorageImageDescriptorWrite(3, outputImage)};
core.writeDescriptorSet(traceDescriptorSet, traceDescriptorWrites);
- vkcv::PipelineHandle tracePipeline = core.createComputePipeline(
- traceShaderProgram,
- { core.getDescriptorSetLayout(traceDescriptorSetLayout).vulkanHandle });
+ vkcv::ComputePipelineHandle tracePipeline = core.createComputePipeline({
+ traceShaderProgram,
+ { core.getDescriptorSetLayout(traceDescriptorSetLayout).vulkanHandle }
+ });
if (!tracePipeline)
{
@@ -207,7 +212,7 @@ int main(int argc, const char** argv) {
return EXIT_FAILURE;
}
- vkcv::camera::CameraManager cameraManager(window);
+ vkcv::camera::CameraManager cameraManager(core.getWindow(windowHandle));
uint32_t camIndex0 = cameraManager.addCamera(vkcv::camera::ControllerType::PILOT);
cameraManager.getCamera(camIndex0).setPosition(glm::vec3(0, 0, -2));
@@ -225,10 +230,10 @@ int main(int argc, const char** argv) {
uint32_t widthPrevious = initialWidth;
uint32_t heightPrevious = initialHeight;
- vkcv::gui::GUI gui(core, window);
+ vkcv::gui::GUI gui(core, windowHandle);
bool renderUI = true;
- window.e_key.add([&renderUI](int key, int scancode, int action, int mods) {
+ core.getWindow(windowHandle).e_key.add([&renderUI](int key, int scancode, int action, int mods) {
if (key == GLFW_KEY_I && action == GLFW_PRESS) {
renderUI = !renderUI;
}
@@ -237,12 +242,12 @@ int main(int argc, const char** argv) {
glm::vec3 skyColor = glm::vec3(0.2, 0.7, 0.8);
float skyColorMultiplier = 1;
- while (window.isWindowOpen())
+ while (vkcv::Window::hasOpenWindow())
{
vkcv::Window::pollEvents();
uint32_t swapchainWidth, swapchainHeight; // No resizing = No problem
- if (!core.beginFrame(swapchainWidth, swapchainHeight)) {
+ if (!core.beginFrame(swapchainWidth, swapchainHeight, windowHandle)) {
continue;
}
@@ -443,7 +448,7 @@ int main(int argc, const char** argv) {
gui.endGUI();
}
- core.endFrame();
+ core.endFrame(windowHandle);
frameIndex++;
}
diff --git a/projects/rtx_ambient_occlusion/.gitignore b/projects/rtx_ambient_occlusion/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..61b2ff94710af817f199d848e4253062c024a6bf
--- /dev/null
+++ b/projects/rtx_ambient_occlusion/.gitignore
@@ -0,0 +1 @@
+rtx_ambient_occlusion
\ No newline at end of file
diff --git a/projects/rtx_ambient_occlusion/CMakeLists.txt b/projects/rtx_ambient_occlusion/CMakeLists.txt
new file mode 100644
index 0000000000000000000000000000000000000000..414279c3fead126a7c7f581f0dc7c42c11158a9e
--- /dev/null
+++ b/projects/rtx_ambient_occlusion/CMakeLists.txt
@@ -0,0 +1,41 @@
+cmake_minimum_required(VERSION 3.16)
+project(rtx_ambient_occlusion)
+
+# setting c++ standard for the project
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+# this should fix the execution path to load local files from the project
+set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
+
+set(rtx_source ${PROJECT_SOURCE_DIR}/src/RTX)
+
+set(rtx_sources
+ ${rtx_source}/RTX.hpp
+ ${rtx_source}/RTX.cpp
+
+ ${rtx_source}/ASManager.hpp
+ ${rtx_source}/ASManager.cpp
+
+ ${rtx_source}/RTXExtensions.hpp
+ ${rtx_source}/RTXExtensions.cpp
+ )
+
+# adding source files to the project
+add_executable(rtx_ambient_occlusion src/main.cpp src/teapot.hpp ${rtx_sources})
+
+# this should fix the execution path to load local files from the project (for MSVC)
+if(MSVC)
+ set_target_properties(rtx_ambient_occlusion PROPERTIES RUNTIME_OUTPUT_DIRECTORY_DEBUG ${CMAKE_RUNTIME_OUTPUT_DIRECTORY})
+ set_target_properties(rtx_ambient_occlusion PROPERTIES RUNTIME_OUTPUT_DIRECTORY_RELEASE ${CMAKE_RUNTIME_OUTPUT_DIRECTORY})
+
+ # in addition to setting the output directory, the working directory has to be set
+ # by default visual studio sets the working directory to the build directory, when using the debugger
+ set_target_properties(rtx_ambient_occlusion PROPERTIES VS_DEBUGGER_WORKING_DIRECTORY ${CMAKE_RUNTIME_OUTPUT_DIRECTORY})
+endif()
+
+# including headers of dependencies and the VkCV framework
+target_include_directories(rtx_ambient_occlusion SYSTEM BEFORE PRIVATE ${vkcv_include} ${vkcv_includes} ${vkcv_asset_loader_include} ${vkcv_camera_include} ${vkcv_scene_include} ${vkcv_shader_compiler_include})
+
+# linking with libraries from all dependencies and the VkCV framework
+target_link_libraries(rtx_ambient_occlusion vkcv ${vkcv_libraries} vkcv_asset_loader ${vkcv_asset_loader_libraries} vkcv_camera vkcv_scene vkcv_shader_compiler)
diff --git a/projects/rtx_ambient_occlusion/resources/shaders/ambientOcclusion.rchit b/projects/rtx_ambient_occlusion/resources/shaders/ambientOcclusion.rchit
new file mode 100644
index 0000000000000000000000000000000000000000..b073916e4eaf992d5e6ae4186013478634263fbd
--- /dev/null
+++ b/projects/rtx_ambient_occlusion/resources/shaders/ambientOcclusion.rchit
@@ -0,0 +1,48 @@
+#version 460
+#extension GL_EXT_ray_tracing : require
+#extension GL_EXT_scalar_block_layout : require
+
+hitAttributeEXT vec2 attributes;
+
+layout(location = 0) rayPayloadInEXT Payload {
+ float hitSky;
+ vec3 worldPosition;
+ vec3 worldNormal;
+} payload;
+
+layout(binding = 2, set = 0) uniform accelerationStructureEXT tlas; // top level acceleration structure
+
+layout(binding = 3, set = 0, scalar) buffer rtxVertices
+{
+ float vertices[];
+};
+
+layout(binding = 4, set = 0, scalar) buffer rtxIndices
+{
+ uint indices[];
+};
+
+void main() {
+ payload.worldPosition = vec3(1.0, 0.0, 0.5);
+
+ ivec3 indicesVec = ivec3(indices[3 * gl_PrimitiveID + 0], indices[3 * gl_PrimitiveID + 1], indices[3 * gl_PrimitiveID + 2]);
+
+ // current triangle
+ const vec3 v0 = vec3(vertices[3 * indicesVec.x + 0],vertices[3 * indicesVec.x + 1],vertices[3 * indicesVec.x + 2]);
+ const vec3 v1 = vec3(vertices[3 * indicesVec.y + 0],vertices[3 * indicesVec.y + 1],vertices[3 * indicesVec.y + 2]);
+ const vec3 v2 = vec3(vertices[3 * indicesVec.z + 0],vertices[3 * indicesVec.z + 1],vertices[3 * indicesVec.z + 2]);
+
+ // use barycentric coordinates to compute intersection
+ const vec3 barycentrics = vec3(1.0 - attributes.x - attributes.y, attributes.xy);
+ const vec3 objectPosition = v0 * barycentrics.x + v1 * barycentrics.y + v2 * barycentrics.z;
+
+ payload.worldPosition = gl_ObjectToWorldEXT * vec4(objectPosition, 1.0);
+
+ const vec3 objectNormal = cross(v1 - v0, v2 - v0);
+
+ payload.worldNormal = normalize((objectNormal * gl_WorldToObjectEXT).xyz);
+
+ payload.worldNormal = faceforward(payload.worldNormal, gl_WorldRayDirectionEXT, payload.worldNormal);
+
+ payload.hitSky = 0.0f;
+}
diff --git a/projects/rtx_ambient_occlusion/resources/shaders/ambientOcclusion.rgen b/projects/rtx_ambient_occlusion/resources/shaders/ambientOcclusion.rgen
new file mode 100644
index 0000000000000000000000000000000000000000..711070fcf1eec18253f331cbd133330791fa6be6
--- /dev/null
+++ b/projects/rtx_ambient_occlusion/resources/shaders/ambientOcclusion.rgen
@@ -0,0 +1,158 @@
+#version 460
+#extension GL_EXT_ray_tracing : require
+
+#define M_PI 3.1415926535897932384626433832795
+
+// A location for a ray payload (we can have multiple of these)
+layout(location = 0) rayPayloadEXT Payload {
+ float hitSky;
+ vec3 worldPosition;
+ vec3 worldNormal;
+} payload;
+
+layout(binding = 0, set = 0, rgba16) uniform image2D outImg; // the output image -> maybe use 16 bit values?
+layout(binding = 1, set = 0) uniform accelerationStructureEXT tlas; // top level acceleration structure
+
+layout( push_constant ) uniform constants {
+ vec4 camera_position; // as origin for ray generation
+ vec4 camera_right; // for computing ray direction
+ vec4 camera_up; // for computing ray direction
+ vec4 camera_forward; // for computing ray direction
+} camera;
+
+// random() and helpers from: https://www.shadertoy.com/view/XlycWh
+float g_seed = 0;
+
+uint base_hash(uvec2 p) {
+ p = 1103515245U*((p >> 1U)^(p.yx));
+ uint h32 = 1103515245U*((p.x)^(p.y>>3U));
+ return h32^(h32 >> 16);
+}
+
+vec2 hash2(inout float seed) {
+ uint n = base_hash(floatBitsToUint(vec2(seed+=.1,seed+=.1)));
+ uvec2 rz = uvec2(n, n*48271U);
+ return vec2(rz.xy & uvec2(0x7fffffffU))/float(0x7fffffff);
+}
+
+void initRandom(uvec2 coord){
+ g_seed = float(base_hash(coord)/float(0xffffffffU));
+}
+
+vec2 random(){
+ return hash2(g_seed);
+}
+
+/**
+ * Traces the ray from the camera and provides the intersection information.
+ * @param[in,out] hitSky Defines if the ray has hit the sky
+ * @param[in,out] pos The position of intersection
+ * @param[in,out] norm The normal at the position of intersection
+ */
+void TraceCameraRay(out bool hitSky, out vec3 pos, out vec3 norm){
+ // Use a camera model to generate a ray for this pixel.
+ vec2 uv = gl_LaunchIDEXT.xy + vec2(random()); // random breaks up aliasing
+ uv /= vec2(gl_LaunchSizeEXT.xy);
+ uv = (uv * 2.0 - 1.0) // normalize uv coordinates into Vulkan viewport space
+ * vec2(1.0, -1.0); // flips y-axis
+ const vec3 orig = camera.camera_position.xyz;
+ const vec3 dir = normalize(uv.x * camera.camera_right + uv.y * camera.camera_up + camera.camera_forward).xyz;
+
+ // Trace a ray into the scene; get back data in the payload.
+ traceRayEXT(tlas, // Acceleration structure
+ gl_RayFlagsOpaqueEXT, // Ray flags, here saying "ignore intersection shaders"
+ 0xFF, // 8-bit instance mask, here saying "trace against all instances"
+ 0, // SBT record offset
+ 0, // SBT record stride for offset
+ 0, // Miss index
+ orig, // Ray origin
+ 0.0, // Minimum t-value
+ dir, // Ray direction
+ 1000.0, // Maximum t-value
+ 0); // Location of payload
+
+ // Read the values from the payload:
+ hitSky = (payload.hitSky > 0.0);
+ pos = payload.worldPosition;
+ norm = payload.worldNormal;
+}
+
+/**
+ * @brief Casts a shadow ray. Returns @p true, if the shadow ray hit the sky.
+ * @param[in] orig The point of origin of the shadow ray.
+ * @param[in] dir The direction of the shadow ray.
+ */
+float CastShadowRay(vec3 orig, vec3 dir){
+ payload.hitSky = 0.0f; // Assume ray is occluded
+ traceRayEXT(tlas, // Acceleration structure
+ gl_RayFlagsOpaqueEXT | gl_RayFlagsSkipClosestHitShaderEXT | gl_RayFlagsTerminateOnFirstHitEXT, // Ray flags, here saying "ignore any hit shaders and closest hit shaders, and terminate the ray on the first found intersection"
+ 0xFF, // 8-bit instance mask, here saying "trace against all instances"
+ 0, // SBT record offset
+ 0, // SBT record stride for offset
+ 0, // Miss index
+ orig, // Ray origin
+ 0.0001, // Minimum t-value - avoid self intersection
+ dir, // Ray direction
+ 1000.0, // Maximum t-value
+ 0); // Location of payload
+ return payload.hitSky;
+}
+
+vec3 sampleCosineDistribution(vec2 xi){
+ float phi = 2 * M_PI * xi.y;
+ return vec3(
+ sqrt(xi.x) * cos(phi),
+ sqrt(1 - xi.x),
+ sqrt(xi.x) * sin(phi));
+}
+
+struct Basis{
+ vec3 right;
+ vec3 up;
+ vec3 forward;
+};
+
+Basis buildBasisAroundNormal(vec3 N){
+ Basis basis;
+ basis.up = N;
+ basis.right = abs(basis.up.x) < 0.99 ? vec3(1, 0, 0) : vec3(0, 0, 1);
+ basis.forward = normalize(cross(basis.up, basis.right));
+ basis.right = cross(basis.up, basis.forward);
+ return basis;
+}
+
+vec3 sampleTangentToWorldSpace(vec3 tangentSpaceSample, vec3 N){
+ Basis tangentBasis = buildBasisAroundNormal(N);
+ return
+ tangentBasis.right * tangentSpaceSample.x +
+ tangentBasis.up * tangentSpaceSample.y +
+ tangentBasis.forward * tangentSpaceSample.z;
+}
+
+void main(){
+ uint rayCount = 64; // the amount of rays to be casted
+
+ initRandom(gl_LaunchIDEXT.xy);
+
+ uvec2 pixel = gl_LaunchIDEXT.xy;
+ bool pixelIsSky; // Does the pixel show the sky (not an object)?
+ vec3 pos, norm; // AO rays from where?
+ TraceCameraRay(pixelIsSky, pos, norm);
+
+ if(pixelIsSky){
+ // Don't compute ambient occlusion for the sky
+ imageStore(outImg, ivec2(pixel), vec4(0.8,0.8,0.8,1.0));
+ return;
+ }
+
+ // Compute ambient occlusion
+ float aoValue = 0.0;
+ for(uint i = 0; i < rayCount; i++){
+ vec3 sampleTangentSpace = sampleCosineDistribution(random());
+ vec3 sampleWorldSpace = sampleTangentToWorldSpace(sampleTangentSpace, norm);
+ aoValue += CastShadowRay(pos, sampleWorldSpace);
+ }
+ aoValue /= rayCount;
+
+ imageStore(outImg, ivec2(pixel), vec4(vec3(aoValue), 1));
+}
diff --git a/projects/rtx_ambient_occlusion/resources/shaders/ambientOcclusion.rmiss b/projects/rtx_ambient_occlusion/resources/shaders/ambientOcclusion.rmiss
new file mode 100644
index 0000000000000000000000000000000000000000..c107dbd03e6a8fdfdd84d2b8d280cb6264307c14
--- /dev/null
+++ b/projects/rtx_ambient_occlusion/resources/shaders/ambientOcclusion.rmiss
@@ -0,0 +1,12 @@
+#version 460
+#extension GL_EXT_ray_tracing : require
+
+layout(location = 0) rayPayloadInEXT Payload {
+ float hitSky;
+ vec3 worldPosition;
+ vec3 worldNormal;
+} payload;
+
+void main() {
+ payload.hitSky = 1.0f;
+}
diff --git a/projects/rtx_ambient_occlusion/src/RTX/ASManager.cpp b/projects/rtx_ambient_occlusion/src/RTX/ASManager.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..c09e669dc94b05235dbb2f6e5f0b40d274e1c182
--- /dev/null
+++ b/projects/rtx_ambient_occlusion/src/RTX/ASManager.cpp
@@ -0,0 +1,460 @@
+#include "ASManager.hpp"
+#include <array>
+
+namespace vkcv::rtx {
+
+
+ ASManager::ASManager(vkcv::Core *core) :
+ m_core(core),
+ m_device(&(core->getContext().getDevice())){
+ // INFO: Using RTX extensions implies that we cannot use the standard dispatcher from Vulkan because using RTX
+ // specific functions via vk::Device will result in validation errors. Instead we need to use a
+ // vk::DispatchLoaderDynamic which is used as dispatcher parameter of the device functions.
+ m_rtxDispatcher = vk::DispatchLoaderDynamic( (PFN_vkGetInstanceProcAddr) m_core->getContext().getInstance().getProcAddr("vkGetInstanceProcAddr") );
+ m_rtxDispatcher.init(m_core->getContext().getInstance());
+
+ // TODO: Recursive call of buildBLAS for bigger scenes. Currently, the RTX module only supports one mesh.
+ }
+
+ ASManager::~ASManager() noexcept {
+ m_rtxDispatcher = vk::DispatchLoaderDynamic( (PFN_vkGetInstanceProcAddr) m_core->getContext().getInstance().getProcAddr("vkGetInstanceProcAddr") );
+ m_rtxDispatcher.init(m_core->getContext().getInstance());
+
+ // destroy every BLAS, its data containers and free used memory blocks
+ for (size_t i=0; i < m_bottomLevelAccelerationStructures.size(); i++) {
+ BottomLevelAccelerationStructure blas = m_bottomLevelAccelerationStructures[i];
+ m_core->getContext().getDevice().destroyAccelerationStructureKHR(blas.vulkanHandle, nullptr, m_rtxDispatcher);
+ m_core->getContext().getDevice().destroy(blas.accelerationBuffer.vulkanHandle);
+ m_core->getContext().getDevice().destroy(blas.indexBuffer.vulkanHandle);
+ m_core->getContext().getDevice().destroy(blas.vertexBuffer.vulkanHandle);
+
+ m_core->getContext().getDevice().freeMemory(blas.accelerationBuffer.deviceMemory);
+ m_core->getContext().getDevice().freeMemory(blas.indexBuffer.deviceMemory);
+ m_core->getContext().getDevice().freeMemory(blas.vertexBuffer.deviceMemory);
+ }
+
+ // destroy the TLAS, its data containers and free used memory blocks
+ TopLevelAccelerationStructure tlas = m_topLevelAccelerationStructure;
+ m_core->getContext().getDevice().destroyAccelerationStructureKHR(tlas.vulkanHandle, nullptr, m_rtxDispatcher);
+ m_core->getContext().getDevice().destroy(tlas.tlasBuffer.vulkanHandle);
+ m_core->getContext().getDevice().destroy(tlas.gpuBufferInstances.vulkanHandle);
+
+ m_core->getContext().getDevice().freeMemory(tlas.tlasBuffer.deviceMemory);
+ m_core->getContext().getDevice().freeMemory(tlas.gpuBufferInstances.deviceMemory);
+ }
+
+
+
+ vk::CommandPool ASManager::createCommandPool() {
+ vk::CommandPool commandPool;
+ vk::CommandPoolCreateInfo commandPoolCreateInfo;
+ commandPoolCreateInfo.setQueueFamilyIndex(m_core->getContext().getQueueManager().getComputeQueues()[0].familyIndex);
+ vk::Result res = m_device->createCommandPool(&commandPoolCreateInfo, nullptr, &commandPool);
+ if (res != vk::Result::eSuccess) {
+ vkcv_log(LogLevel::ERROR, "ASManager: command pool could not be created! (%s)", vk::to_string(res).c_str());
+ }
+ return commandPool;
+ };
+
+ vk::CommandBuffer ASManager::createAndBeginCommandBuffer(vk::CommandPool commandPool)
+ {
+ vk::CommandBufferAllocateInfo commandBufferAllocateInfo{};
+ commandBufferAllocateInfo.setLevel(vk::CommandBufferLevel::ePrimary);
+ commandBufferAllocateInfo.setCommandPool(commandPool);
+ commandBufferAllocateInfo.setCommandBufferCount(1);
+ vk::CommandBuffer commandBuffer;
+ vk::Result result = m_device->allocateCommandBuffers(&commandBufferAllocateInfo, &commandBuffer);
+ if (result != vk::Result::eSuccess) {
+ vkcv_log(LogLevel::ERROR, "ASManager: command buffer for Acceleration Strucutre Build could not be allocated! (%s)", vk::to_string(result).c_str());
+ }
+
+ beginCommandBuffer(commandBuffer, vk::CommandBufferUsageFlagBits::eOneTimeSubmit);
+ return commandBuffer;
+ }
+
+ void ASManager::submitCommandBuffer(vk::CommandPool commandPool, vk::CommandBuffer& commandBuffer)
+ {
+ commandBuffer.end();
+
+ vk::SubmitInfo submitInfo;
+ submitInfo.setCommandBufferCount(1);
+ submitInfo.setPCommandBuffers(&commandBuffer);
+
+ vkcv::Queue queue = m_core->getContext().getQueueManager().getComputeQueues()[0];
+
+ queue.handle.submit(submitInfo);
+ queue.handle.waitIdle();
+
+ m_device->freeCommandBuffers(commandPool, 1, &commandBuffer);
+ m_device->destroyCommandPool(commandPool);
+ }
+
+ vk::DeviceAddress ASManager::getBufferDeviceAddress(vk::Buffer buffer)
+ {
+ vk::BufferDeviceAddressInfo bufferDeviceAddressInfo(buffer);
+ return m_device->getBufferAddress(bufferDeviceAddressInfo);
+ }
+
+ void ASManager::createBuffer(RTXBuffer& buffer) {
+
+ vk::BufferCreateInfo bufferCreateInfo;
+ bufferCreateInfo.setFlags(vk::BufferCreateFlags());
+ bufferCreateInfo.setUsage(buffer.bufferUsageFlagBits);
+ bufferCreateInfo.setSize(buffer.deviceSize);
+
+ buffer.vulkanHandle = m_device->createBuffer(bufferCreateInfo);
+ vk::MemoryRequirements2 memoryRequirements2;
+ vk::MemoryDedicatedRequirements dedicatedRequirements;
+ vk::BufferMemoryRequirementsInfo2 bufferRequirements;
+
+ bufferRequirements.setBuffer(buffer.vulkanHandle);
+ memoryRequirements2.pNext = &dedicatedRequirements;
+ m_device->getBufferMemoryRequirements2(&bufferRequirements, &memoryRequirements2);
+
+ vk::PhysicalDeviceMemoryProperties physicalDeviceMemoryProperties = m_core->getContext().getPhysicalDevice().getMemoryProperties();
+
+ uint32_t memoryTypeIndex = -1;
+ for (int i = 0; i < physicalDeviceMemoryProperties.memoryTypeCount; i++) {
+ if ((memoryRequirements2.memoryRequirements.memoryTypeBits & (1 << i))
+ && (physicalDeviceMemoryProperties.memoryTypes[i].propertyFlags & buffer.memoryPropertyFlagBits) == buffer.memoryPropertyFlagBits) {
+ memoryTypeIndex = i;
+ break;
+ }
+ }
+
+ vk::MemoryAllocateInfo memoryAllocateInfo(
+ memoryRequirements2.memoryRequirements.size, // size of allocation in bytes
+ memoryTypeIndex // index identifying a memory type from the memoryTypes array of the vk::PhysicalDeviceMemoryProperties structure.
+ );
+ vk::MemoryAllocateFlagsInfo allocateFlagsInfo(
+ vk::MemoryAllocateFlagBits::eDeviceAddress // vk::MemoryAllocateFlags
+ );
+ memoryAllocateInfo.setPNext(&allocateFlagsInfo); // extend memory allocate info with allocate flag info
+ buffer.deviceMemory = m_device->allocateMemory(memoryAllocateInfo);
+
+ uint32_t memoryOffset = 0;
+ m_device->bindBufferMemory(buffer.vulkanHandle, buffer.deviceMemory, memoryOffset);
+
+ // only fill data in case of CPU buffer
+ if (buffer.bufferType == RTXBufferType::STAGING) {
+ void* mapped = m_device->mapMemory(buffer.deviceMemory, memoryOffset, buffer.deviceSize);
+ std::memcpy(mapped, buffer.data, buffer.deviceSize);
+ m_device->unmapMemory(buffer.deviceMemory);
+ }
+ }
+
+ void ASManager::copyFromCPUToGPU(RTXBuffer& cpuBuffer, RTXBuffer& gpuBuffer) {
+ SubmitInfo submitInfo;
+ submitInfo.queueType = QueueType::Graphics;
+
+ vk::CommandPool commandPool= createCommandPool();
+ vk::CommandBuffer commandBuffer= createAndBeginCommandBuffer(commandPool);
+ vk::BufferCopy bufferCopy;
+ bufferCopy.size = cpuBuffer.deviceSize;
+ commandBuffer.copyBuffer(cpuBuffer.vulkanHandle, gpuBuffer.vulkanHandle, 1, &bufferCopy);
+
+ submitCommandBuffer(commandPool,commandBuffer);
+
+ m_device->destroyBuffer(cpuBuffer.vulkanHandle);
+ m_device->freeMemory(cpuBuffer.deviceMemory);
+ }
+
+ void ASManager::buildBLAS(RTXBuffer vertexBuffer, uint32_t vertexCount, RTXBuffer indexBuffer, uint32_t indexCount) {
+ // TODO: organize hierarchical structure of multiple BLAS
+
+ vk::DeviceAddress vertexBufferAddress = getBufferDeviceAddress(vertexBuffer.vulkanHandle);
+ vk::DeviceAddress indexBufferAddress = getBufferDeviceAddress(indexBuffer.vulkanHandle);
+
+ // triangle mesh data
+ vk::AccelerationStructureGeometryTrianglesDataKHR asTriangles(
+ vk::Format::eR32G32B32Sfloat, // vertex format
+ vertexBufferAddress, // vertex buffer address (vk::DeviceOrHostAddressConstKHR)
+ 3 * sizeof(float), // vertex stride (vk::DeviceSize)
+ uint32_t(vertexCount - 1), // maxVertex (uint32_t)
+ vk::IndexType::eUint32, // indexType (vk::IndexType) --> INFO: UINT16 oder UINT32!
+ indexBufferAddress, // indexData (vk::DeviceOrHostAddressConstKHR)
+ {} // transformData (vk::DeviceOrHostAddressConstKHR)
+ );
+
+ // Geometry data
+ vk::AccelerationStructureGeometryKHR asGeometry(
+ vk::GeometryTypeKHR::eTriangles, // The geometry type, e.g. triangles, AABBs, instances
+ asTriangles, // the geometry data
+ vk::GeometryFlagBitsKHR::eOpaque // This flag disables any-hit shaders to increase ray tracing performance
+ );
+
+ // Ranges for data lists
+ vk::AccelerationStructureBuildRangeInfoKHR asRangeInfo(
+ uint32_t(indexCount / 3), // the primitiveCount (uint32_t)
+ 0, // primitiveOffset (uint32_t)
+ 0, // firstVertex (uint32_t)
+ 0 // transformOffset (uint32_t)
+ );
+
+ // Settings and array of geometries to build into BLAS
+ vk::AccelerationStructureBuildGeometryInfoKHR asBuildInfo(
+ vk::AccelerationStructureTypeKHR::eBottomLevel, // type of the AS: bottom vs. top
+ vk::BuildAccelerationStructureFlagBitsKHR::ePreferFastTrace, // some flags for different purposes, e.g. efficiency
+ vk::BuildAccelerationStructureModeKHR::eBuild, // AS mode: build vs. update
+ {}, // src AS (this seems to be for copying AS)
+ {}, // dst AS (this seems to be for copying AS)
+ 1, // the geometryCount. TODO: how many do we need?
+ &asGeometry // the next input entry would be a pointer to a pointer to geometries. Maybe geometryCount depends on the next entry?
+ );
+
+ // Calculate memory needed for AS
+ vk::AccelerationStructureBuildSizesInfoKHR asBuildSizesInfo;
+ m_device->getAccelerationStructureBuildSizesKHR(
+ vk::AccelerationStructureBuildTypeKHR::eDevice, // build on device instead of host
+ &asBuildInfo, // pointer to build info
+ &asRangeInfo.primitiveCount, // array of number of primitives per geometry
+ &asBuildSizesInfo, // output pointer to store sizes
+ m_rtxDispatcher
+ );
+
+ // create buffer for acceleration structure
+ RTXBuffer blasBuffer;
+ blasBuffer.bufferType = RTXBufferType::ACCELERATION;
+ blasBuffer.deviceSize = asBuildSizesInfo.accelerationStructureSize;
+ blasBuffer.bufferUsageFlagBits = vk::BufferUsageFlagBits::eAccelerationStructureStorageKHR
+ | vk::BufferUsageFlagBits::eShaderDeviceAddress
+ | vk::BufferUsageFlagBits::eStorageBuffer;
+ blasBuffer.memoryPropertyFlagBits = { vk::MemoryPropertyFlagBits::eDeviceLocal };
+
+ createBuffer(blasBuffer);
+
+ // Create an empty AS object
+ vk::AccelerationStructureCreateInfoKHR asCreateInfo(
+ vk::AccelerationStructureCreateFlagsKHR(), // creation flags
+ blasBuffer.vulkanHandle, // allocated AS buffer.
+ 0,
+ asBuildSizesInfo.accelerationStructureSize, // size of the AS
+ asBuildInfo.type // type of the AS
+ );
+
+ // Create the intended AS object
+ vk::AccelerationStructureKHR blasKHR;
+ vk::Result res = m_device->createAccelerationStructureKHR(
+ &asCreateInfo, // AS create info
+ nullptr, // allocator callbacks
+ &blasKHR, // the AS
+ m_rtxDispatcher
+ );
+ if (res != vk::Result::eSuccess) {
+ vkcv_log(vkcv::LogLevel::ERROR, "The Bottom Level Acceleration Structure could not be build! (%s)", vk::to_string(res).c_str());
+ }
+ asBuildInfo.setDstAccelerationStructure(blasKHR);
+
+ // Create temporary scratch buffer used for building the AS
+ RTXBuffer scratchBuffer;
+ scratchBuffer.bufferType = RTXBufferType::SCRATCH;
+ scratchBuffer.deviceSize = asBuildSizesInfo.buildScratchSize;
+ scratchBuffer.bufferUsageFlagBits = vk::BufferUsageFlagBits::eShaderDeviceAddress
+ | vk::BufferUsageFlagBits::eStorageBuffer;
+ scratchBuffer.memoryPropertyFlagBits = { vk::MemoryPropertyFlagBits::eDeviceLocal };
+
+ createBuffer(scratchBuffer);
+
+ asBuildInfo.setScratchData(getBufferDeviceAddress(scratchBuffer.vulkanHandle));
+
+ // Pointer to rangeInfo, used later for build
+ vk::AccelerationStructureBuildRangeInfoKHR* pointerToRangeInfo = &asRangeInfo;
+
+ vk::CommandPool commandPool = createCommandPool();
+ vk::CommandBuffer commandBuffer = createAndBeginCommandBuffer(commandPool);
+
+ commandBuffer.buildAccelerationStructuresKHR(1, &asBuildInfo, &pointerToRangeInfo, m_rtxDispatcher);
+
+ submitCommandBuffer(commandPool, commandBuffer);
+
+ m_core->getContext().getDevice().destroyBuffer(scratchBuffer.vulkanHandle, nullptr, m_rtxDispatcher);
+ m_core->getContext().getDevice().freeMemory(scratchBuffer.deviceMemory, nullptr, m_rtxDispatcher);
+
+ BottomLevelAccelerationStructure blas = {
+ vertexBuffer,
+ indexBuffer,
+ blasBuffer,
+ blasKHR
+ };
+ m_bottomLevelAccelerationStructures.push_back(blas);
+ }
+
+ void ASManager::buildTLAS() {
+ // TODO: organize hierarchical structure of multiple BLAS
+
+ // We need an the device address of each BLAS --> TODO: for loop for bigger scenes
+ vk::AccelerationStructureDeviceAddressInfoKHR addressInfo(
+ m_bottomLevelAccelerationStructures[0].vulkanHandle
+ );
+ vk::DeviceAddress blasAddress = m_device->getAccelerationStructureAddressKHR(&addressInfo, m_rtxDispatcher);
+
+ std::array<std::array<float, 4>, 3> transformMatrix = {
+ std::array<float, 4>{1.f, 0.f, 0.f, 0.f},
+ std::array<float, 4>{0.f, 1.f, 0.f, 0.f},
+ std::array<float, 4>{0.f, 0.f, 1.f, 0.f},
+ };
+
+ vk::TransformMatrixKHR transformMatrixKhr(
+ transformMatrix // std::array<std::array<float,4>,3> const&
+ );
+
+ vk::AccelerationStructureInstanceKHR accelerationStructureInstanceKhr(
+ transformMatrixKhr, // vk::TransformMatrixKHR transform_ = {},
+ 0, // uint32_t instanceCustomIndex,
+ 0xFF, //uint32_t mask_ = {},
+ 0, // uint32_t instanceShaderBindingTableRecordOffset,
+ vk::GeometryInstanceFlagBitsKHR::eTriangleFacingCullDisable, // vk::GeometryInstanceFlagsKHR
+ blasAddress // uint64_t accelerationStructureReference (the device address of the BLAS)
+ );
+
+ // create a buffer of instances on the device and upload the array of instances to it
+ RTXBuffer stagingBufferInstances;
+ stagingBufferInstances.bufferType = RTXBufferType::STAGING;
+ stagingBufferInstances.deviceSize = sizeof(accelerationStructureInstanceKhr);
+ stagingBufferInstances.data = &accelerationStructureInstanceKhr;
+ stagingBufferInstances.bufferUsageFlagBits = vk::BufferUsageFlagBits::eShaderDeviceAddress
+ | vk::BufferUsageFlagBits::eTransferSrc;
+ stagingBufferInstances.memoryPropertyFlagBits = vk::MemoryPropertyFlagBits::eHostCoherent
+ | vk::MemoryPropertyFlagBits::eHostVisible;
+
+ createBuffer(stagingBufferInstances);
+
+ RTXBuffer bufferInstances;
+ bufferInstances.bufferType = RTXBufferType::GPU;
+ bufferInstances.deviceSize = sizeof(accelerationStructureInstanceKhr);
+ bufferInstances.bufferUsageFlagBits = vk::BufferUsageFlagBits::eShaderDeviceAddress
+ | vk::BufferUsageFlagBits::eTransferDst | vk::BufferUsageFlagBits::eTransferSrc;
+ bufferInstances.memoryPropertyFlagBits = vk::MemoryPropertyFlagBits::eDeviceLocal;
+
+ createBuffer(bufferInstances);
+ copyFromCPUToGPU(stagingBufferInstances, bufferInstances); // automatically deletes and frees memory of stagingBufferInstances
+
+ vk::MemoryBarrier barrier;
+ barrier.setSrcAccessMask(vk::AccessFlagBits::eTransferWrite);
+ barrier.setDstAccessMask(vk::AccessFlagBits::eAccelerationStructureWriteKHR);
+ vk::CommandPool commandPool = createCommandPool();
+ vk::CommandBuffer commandBuffer = createAndBeginCommandBuffer(commandPool);
+ commandBuffer.pipelineBarrier(
+ vk::PipelineStageFlagBits::eTransfer,
+ vk::PipelineStageFlagBits::eAccelerationStructureBuildKHR,
+ {},1,&barrier,0, nullptr,0,nullptr);
+ submitCommandBuffer(commandPool, commandBuffer);
+
+
+ // ranging information for TLAS build
+ vk::AccelerationStructureBuildRangeInfoKHR asRangeInfo(
+ 1, // primitiveCount -> number of instances
+ 0, // primitiveOffset
+ 0, // firstVertex
+ 0 //transformOffset
+ );
+
+ vk::DeviceAddress bufferInstancesAddress = getBufferDeviceAddress(bufferInstances.vulkanHandle);
+
+ vk::AccelerationStructureGeometryInstancesDataKHR asInstances(
+ false, // vk::Bool32 arrayOfPointers
+ bufferInstancesAddress // vk::DeviceOrHostAddressConstKHR data_ = {}
+ );
+
+ // Geometry, in this case instances of BLAS
+ vk::AccelerationStructureGeometryKHR asGeometry(
+ vk::GeometryTypeKHR::eInstances, // vk::GeometryTypeKHR geometryType_ = vk::GeometryTypeKHR::eTriangles
+ asInstances, // vk::AccelerationStructureGeometryDataKHR geometry_ = {}
+ {} // vk::GeometryFlagsKHR flags_ = {}
+ );
+
+ // Finally, create the TLAS
+ vk::AccelerationStructureBuildGeometryInfoKHR asBuildInfo(
+ vk::AccelerationStructureTypeKHR::eTopLevel, // type of the AS: bottom vs. top
+ vk::BuildAccelerationStructureFlagBitsKHR::ePreferFastTrace, // some flags for different purposes, e.g. efficiency
+ vk::BuildAccelerationStructureModeKHR::eBuild, // AS mode: build vs. update
+ {}, // src AS (this seems to be for copying AS)
+ {}, // dst AS (this seems to be for copying AS)
+ 1, // the geometryCount.
+ &asGeometry // the next input entry would be a pointer to a pointer to geometries. Maybe geometryCount depends on the next entry?
+ );
+
+ // AS size and scratch space size, given by count of instances (1)
+ vk::AccelerationStructureBuildSizesInfoKHR asSizeInfo;
+ m_core->getContext().getDevice().getAccelerationStructureBuildSizesKHR(
+ vk::AccelerationStructureBuildTypeKHR::eDevice,
+ &asBuildInfo,
+ &asRangeInfo.primitiveCount,
+ &asSizeInfo,
+ m_rtxDispatcher
+ );
+
+ // Create buffer for the TLAS
+ RTXBuffer tlasBuffer;
+ tlasBuffer.bufferType = RTXBufferType::ACCELERATION;
+ tlasBuffer.deviceSize = asSizeInfo.accelerationStructureSize;
+ tlasBuffer.bufferUsageFlagBits = vk::BufferUsageFlagBits::eAccelerationStructureStorageKHR
+ | vk::BufferUsageFlagBits::eShaderDeviceAddress
+ | vk::BufferUsageFlagBits::eStorageBuffer;
+
+ createBuffer(tlasBuffer);
+
+ // Create empty TLAS object
+ vk::AccelerationStructureCreateInfoKHR asCreateInfo(
+ {}, // creation flags
+ tlasBuffer.vulkanHandle, // allocated AS buffer.
+ 0,
+ asSizeInfo.accelerationStructureSize, // size of the AS
+ asBuildInfo.type // type of the AS
+ );
+
+ vk::AccelerationStructureKHR tlas;
+ vk::Result res = m_device->createAccelerationStructureKHR(&asCreateInfo, nullptr, &tlas, m_rtxDispatcher);
+ if (res != vk::Result::eSuccess) {
+ vkcv_log(LogLevel::ERROR, "Top Level Acceleration Structure could not be created! (%s)", vk::to_string(res).c_str());
+ }
+ asBuildInfo.setDstAccelerationStructure(tlas);
+
+ // Create temporary scratch buffer used for building the AS
+ RTXBuffer tlasScratchBuffer; // scratch buffer
+ tlasScratchBuffer.bufferType = RTXBufferType::ACCELERATION;
+ tlasScratchBuffer.deviceSize = asSizeInfo.buildScratchSize;
+ tlasScratchBuffer.bufferUsageFlagBits = vk::BufferUsageFlagBits::eShaderDeviceAddressKHR
+ | vk::BufferUsageFlagBits::eStorageBuffer;
+
+ createBuffer(tlasScratchBuffer);
+
+ vk::BufferDeviceAddressInfo tempBuildDataBufferDeviceAddressInfo(tlasScratchBuffer.vulkanHandle);
+ vk::DeviceAddress tempBuildBufferDataAddress = m_core->getContext().getDevice().getBufferAddressKHR(tempBuildDataBufferDeviceAddressInfo, m_rtxDispatcher);
+ asBuildInfo.setScratchData(tempBuildBufferDataAddress);
+
+ // Pointer to rangeInfo, used later for build
+ vk::AccelerationStructureBuildRangeInfoKHR* pointerToRangeInfo = &asRangeInfo;
+
+ // Build the TLAS.
+
+ vk::CommandPool commandPool2 = createCommandPool();
+ vk::CommandBuffer commandBuffer2 = createAndBeginCommandBuffer(commandPool2);
+ commandBuffer2.buildAccelerationStructuresKHR(1, &asBuildInfo, &pointerToRangeInfo, m_rtxDispatcher);
+ submitCommandBuffer(commandPool2, commandBuffer2);
+
+ m_device->destroyBuffer(tlasScratchBuffer.vulkanHandle, nullptr, m_rtxDispatcher);
+ m_device->freeMemory(tlasScratchBuffer.deviceMemory, nullptr, m_rtxDispatcher);
+
+ m_topLevelAccelerationStructure = {
+ bufferInstances,
+ tlasBuffer,
+ tlasScratchBuffer,
+ tlas
+ };
+ }
+
+ TopLevelAccelerationStructure ASManager::getTLAS()
+ {
+ return m_topLevelAccelerationStructure;
+ }
+
+ BottomLevelAccelerationStructure ASManager::getBLAS(uint32_t id)
+ {
+ return m_bottomLevelAccelerationStructures[id];
+ }
+
+ const vk::DispatchLoaderDynamic& ASManager::getDispatcher() {
+ return m_rtxDispatcher;
+ }
+}
\ No newline at end of file
diff --git a/projects/rtx_ambient_occlusion/src/RTX/ASManager.hpp b/projects/rtx_ambient_occlusion/src/RTX/ASManager.hpp
new file mode 100644
index 0000000000000000000000000000000000000000..42ef7fc03c58a223b510e2a41d710f463dba0c6b
--- /dev/null
+++ b/projects/rtx_ambient_occlusion/src/RTX/ASManager.hpp
@@ -0,0 +1,188 @@
+#pragma once
+
+#include <vkcv/Core.hpp>
+
+namespace vkcv::rtx {
+
+ /**
+ * @brief Used for @#RTXBuffer creation depending on the @#RTXBufferType.
+ */
+ enum class RTXBufferType {
+ STAGING,
+ GPU,
+ ACCELERATION,
+ SHADER_BINDING,
+ SCRATCH
+ };
+
+ /**
+ * @brief Used as a container to handle buffer creation and destruction in RTX-specific use cases.
+ */
+ struct RTXBuffer {
+ RTXBufferType bufferType;
+ void* data;
+ vk::DeviceSize deviceSize;
+ vk::DeviceMemory deviceMemory;
+ vk::BufferUsageFlags bufferUsageFlagBits;
+ vk::MemoryPropertyFlags memoryPropertyFlagBits;
+ vk::Buffer vulkanHandle;
+ };
+
+ /**
+ * @brief Used as a container to handle bottom-level acceleration structure (BLAS) construction and destruction.
+ */
+ struct BottomLevelAccelerationStructure {
+ RTXBuffer vertexBuffer;
+ RTXBuffer indexBuffer;
+ RTXBuffer accelerationBuffer;
+ vk::AccelerationStructureKHR vulkanHandle;
+ };
+
+ /**
+ * @brief Used as a container to handle top-level acceleration structure (TLAS) construction and destruction.
+ */
+ struct TopLevelAccelerationStructure {
+ RTXBuffer gpuBufferInstances;
+ RTXBuffer tlasBuffer;
+ RTXBuffer tempBuildDataBuffer; // scratch buffer
+ vk::AccelerationStructureKHR vulkanHandle;
+ };
+
+ /**
+ * @brief A class for managing acceleration structures (bottom, top).
+ */
+ class ASManager {
+ private:
+ Core* m_core;
+ const vk::Device* m_device;
+ std::vector<BottomLevelAccelerationStructure> m_bottomLevelAccelerationStructures;
+ TopLevelAccelerationStructure m_topLevelAccelerationStructure;
+ vk::DispatchLoaderDynamic m_rtxDispatcher;
+
+ /**
+ * Creates a command pool.
+ */
+ vk::CommandPool createCommandPool();
+
+ /**
+ * @brief Takes a @p cmdPool, allocates a command buffer and starts recording it.
+ * @param cmdPool The command pool.
+ * @return The allocated command buffer.
+ */
+ vk::CommandBuffer createAndBeginCommandBuffer( vk::CommandPool cmdPool);
+
+ /**
+ * @brief Ends the @p commandBuffer,submits it and waits. Afterwards frees the @p commandBuffer.
+ * @param commandPool The command pool.
+ * @param commandBuffer The command buffer.
+ */
+ void submitCommandBuffer(vk::CommandPool commandPool, vk::CommandBuffer& commandBuffer);
+
+ /**
+ * @brief Gets the device address of a @p buffer.
+ * @param buffer The buffer.
+ * @return The device address of the @p buffer.
+ */
+ vk::DeviceAddress getBufferDeviceAddress(vk::Buffer buffer);
+
+ /**
+ * @brief Copies @p cpuBuffer data into a @p gpuBuffer. Typical use case is a staging buffer (namely,
+ * @p cpuBuffer) used to fill a @p gpuBuffer with @p vk::MemoryPropertyFlagBits::eDeviceLocal flag set.
+ * @p cpuBuffer is destroyed and freed after copying.
+ * @param cpuBuffer
+ * @param gpuBuffer
+ */
+ void copyFromCPUToGPU(RTXBuffer &cpuBuffer, RTXBuffer &gpuBuffer);
+
+ public:
+
+ /**
+ * @brief Constructor of @#ASManager .
+ * @param core
+ */
+ ASManager(vkcv::Core *core);
+
+ /**
+ * @brief Default destructor of @#ASManager.
+ */
+ ~ASManager();
+
+ /**
+ * @brief Returns a @#RTXBuffer object holding data of type @p T.
+ * @param data The input data of type @p T.
+ * @return A @#RTXBuffer object holding @p data of type @p T.
+ */
+ template<class T>
+ RTXBuffer makeBufferFromData(std::vector<T>& data) {
+
+ // first: Staging Buffer creation
+ RTXBuffer stagingBuffer;
+ stagingBuffer.bufferType = RTXBufferType::STAGING;
+ stagingBuffer.deviceSize = sizeof(T) * data.size();
+ stagingBuffer.data = data.data();
+ stagingBuffer.bufferUsageFlagBits = vk::BufferUsageFlagBits::eTransferSrc;
+ stagingBuffer.memoryPropertyFlagBits = vk::MemoryPropertyFlagBits::eHostCoherent | vk::MemoryPropertyFlagBits::eHostVisible;
+
+ createBuffer(stagingBuffer);
+
+ // second: create AS Buffer
+ RTXBuffer targetBuffer;
+ targetBuffer.bufferType = RTXBufferType::GPU;
+ targetBuffer.deviceSize = sizeof(T) * data.size();
+ targetBuffer.bufferUsageFlagBits = vk::BufferUsageFlagBits::eAccelerationStructureBuildInputReadOnlyKHR
+ | vk::BufferUsageFlagBits::eTransferDst
+ | vk::BufferUsageFlagBits::eStorageBuffer
+ | vk::BufferUsageFlagBits::eShaderDeviceAddress;
+ targetBuffer.memoryPropertyFlagBits = vk::MemoryPropertyFlagBits::eDeviceLocal;
+
+ createBuffer(targetBuffer);
+
+ // copy from CPU to GPU
+ copyFromCPUToGPU(stagingBuffer, targetBuffer);
+
+ return targetBuffer;
+ };
+
+ /**
+ * @brief A helper function used by @#ASManager::makeBufferFromData. Creates a fully initialized @#RTXBuffer object
+ * from partially specified @p buffer. All missing data of @p buffer will be completed by this function.
+ * @param buffer The partially specified @#RTXBuffer holding that part of information which is required for
+ * successfully creating a @p vk::Buffer object.
+ */
+ void createBuffer(RTXBuffer& buffer);
+
+ /**
+ * @brief Build a Bottom Level Acceleration Structure (BLAS) object from given @p vertexBuffer and @p indexBuffer.
+ * @param[in] vertexBuffer The vertex data.
+ * @param[in] vertexCount The amount of vertices in @p vertexBuffer.
+ * @param[in] indexBuffer The index data.
+ * @param[in] indexCount The amount of indices in @p indexBuffer.
+ */
+ void buildBLAS(RTXBuffer vertexBuffer, uint32_t vertexCount, RTXBuffer indexBuffer, uint32_t indexCount);
+
+ /**
+ * @brief Build a Top Level Acceleration Structure (TLAS) object from the created
+ * @#ASManager::m_accelerationStructures objects.
+ */
+ void buildTLAS();
+
+ /**
+ * @brief Returns the top-level acceleration structure (TLAS) buffer.
+ * @return A @#TopLevelAccelerationStructure object holding the TLAS.
+ */
+ TopLevelAccelerationStructure getTLAS();
+
+ /**
+ * @brief Returns the bottom-level acceleration structure at @p id.
+ * @param id The ID used for indexing.
+ * @return The specified @#BottomLevelAccelerationStructure object.
+ */
+ BottomLevelAccelerationStructure getBLAS(uint32_t id);
+
+ /**
+ * @brief Returns the dispatcher member variable for access in the @#RTXModule.
+ * @return The dispatcher member variable.
+ */
+ const vk::DispatchLoaderDynamic& getDispatcher();
+ };
+}
\ No newline at end of file
diff --git a/projects/rtx_ambient_occlusion/src/RTX/RTX.cpp b/projects/rtx_ambient_occlusion/src/RTX/RTX.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..59f3da21409993bf6a460000a49c2ed67cb6d178
--- /dev/null
+++ b/projects/rtx_ambient_occlusion/src/RTX/RTX.cpp
@@ -0,0 +1,331 @@
+#include "RTX.hpp"
+
+namespace vkcv::rtx {
+
+ RTXModule::RTXModule(Core* core, ASManager* asManager, std::vector<float>& vertices,
+ std::vector<uint32_t>& indices, std::vector<vkcv::DescriptorSetHandle>& descriptorSetHandles){
+ m_core = core;
+ m_asManager = asManager;
+ // build acceleration structures BLAS then TLAS --> see ASManager
+ RTXBuffer vertexBuffer = m_asManager->makeBufferFromData(vertices);
+ RTXBuffer indexBuffer = m_asManager->makeBufferFromData(indices);
+ m_asManager->buildBLAS(vertexBuffer, vertices.size(), indexBuffer,indices.size());
+ m_asManager->buildTLAS();
+ RTXDescriptors(descriptorSetHandles);
+ }
+
+
+ RTXModule::~RTXModule()
+ {
+ m_core->getContext().getDevice().destroy(m_pipeline);
+ m_core->getContext().getDevice().destroy(m_pipelineLayout);
+ m_core->getContext().getDevice().destroy(m_shaderBindingTableBuffer.vulkanHandle);
+ m_core->getContext().getDevice().freeMemory(m_shaderBindingTableBuffer.deviceMemory);
+ }
+
+ void RTXModule::createShaderBindingTable(uint32_t shaderCount) {
+ vk::PhysicalDeviceRayTracingPipelinePropertiesKHR rayTracingProperties;
+
+ vk::PhysicalDeviceProperties2 physicalProperties;
+ physicalProperties.pNext = &rayTracingProperties;
+
+ m_core->getContext().getPhysicalDevice().getProperties2(&physicalProperties);
+
+ vk::DeviceSize shaderBindingTableSize = rayTracingProperties.shaderGroupHandleSize * shaderCount;
+
+
+ m_shaderBindingTableBuffer.bufferType = RTXBufferType::SHADER_BINDING;
+ m_shaderBindingTableBuffer.bufferUsageFlagBits = vk::BufferUsageFlagBits::eShaderBindingTableKHR | vk::BufferUsageFlagBits::eShaderDeviceAddressKHR;
+ m_shaderBindingTableBuffer.memoryPropertyFlagBits = vk::MemoryPropertyFlagBits::eHostVisible;
+ m_shaderBindingTableBuffer.deviceSize = shaderBindingTableSize;
+
+ m_asManager->createBuffer(m_shaderBindingTableBuffer);
+
+ void* shaderHandleStorage = (void*)malloc(sizeof(uint8_t) * shaderBindingTableSize);
+
+ if (m_core->getContext().getDevice().getRayTracingShaderGroupHandlesKHR(m_pipeline, 0, shaderCount, shaderBindingTableSize,
+ shaderHandleStorage, m_asManager->getDispatcher()) != vk::Result::eSuccess) {
+ vkcv_log(LogLevel::ERROR, "Could not retrieve shader binding table group handles.");
+ }
+
+ m_shaderGroupBaseAlignment = rayTracingProperties.shaderGroupBaseAlignment;
+ uint8_t* mapped = (uint8_t*) m_core->getContext().getDevice().mapMemory(m_shaderBindingTableBuffer.deviceMemory, 0, shaderBindingTableSize);
+ for (int i = 0; i < shaderCount; i++) {
+ memcpy(mapped, (uint8_t*)shaderHandleStorage + (i * rayTracingProperties.shaderGroupHandleSize), rayTracingProperties.shaderGroupHandleSize);
+ mapped += m_shaderGroupBaseAlignment;
+ }
+
+ m_core->getContext().getDevice().unmapMemory(m_shaderBindingTableBuffer.deviceMemory);
+ free(shaderHandleStorage);
+ }
+
+ ShaderBindingTableRegions RTXModule::createRegions() {
+ // Define offsets for the RTX shaders. RayGen is the first allocated shader. Each following shader is
+ // shifted by shaderGroupBaseAlignment.
+ // Offset Calculation: offset = count of previous shaders * m_shaderGroupBaseAlignment
+ // Regions are hard coded
+ vk::DeviceSize rayGenOffset = 0; //First Shader group -> offset 0 * m_shaderGroupBaseAlignment =0
+ vk::DeviceSize missOffset = m_shaderGroupBaseAlignment;//Second group, offset = 1 * m_shaderGroupBaseAlignment
+ vk::DeviceSize closestHitOffset = 2 * m_shaderGroupBaseAlignment; //Third group, offset = 2 * m_shaderGroupBaseAlignment
+ vk::DeviceSize shaderBindingTableSize = m_shaderGroupBaseAlignment * 3; // 3 hardcoded to rtx-shader count
+
+ auto m_rtxDispatcher = vk::DispatchLoaderDynamic((PFN_vkGetInstanceProcAddr)m_core->getContext().getInstance().getProcAddr("vkGetInstanceProcAddr"));
+ m_rtxDispatcher.init(m_core->getContext().getInstance());
+
+
+ // Create regions for the shader binding table buffer which are used for vk::CommandBuffer::traceRaysKHR
+ vk::StridedDeviceAddressRegionKHR rgenRegion;
+ vk::BufferDeviceAddressInfoKHR shaderBindingTableAddressInfo(m_shaderBindingTableBuffer.vulkanHandle);
+ rgenRegion.deviceAddress = m_core->getContext().getDevice().getBufferAddressKHR(shaderBindingTableAddressInfo, m_rtxDispatcher) + rayGenOffset;
+ rgenRegion.setStride(shaderBindingTableSize);
+ rgenRegion.setSize(shaderBindingTableSize);
+ vk::StridedDeviceAddressRegionKHR rmissRegion;
+ rmissRegion.deviceAddress = m_core->getContext().getDevice().getBufferAddressKHR(shaderBindingTableAddressInfo, m_rtxDispatcher) + missOffset;
+ rmissRegion.setStride(shaderBindingTableSize);
+ rmissRegion.setSize(shaderBindingTableSize);
+ vk::StridedDeviceAddressRegionKHR rchitRegion;
+ rchitRegion.deviceAddress = m_core->getContext().getDevice().getBufferAddressKHR(shaderBindingTableAddressInfo, m_rtxDispatcher) + closestHitOffset;
+ rchitRegion.setStride(shaderBindingTableSize);
+ rchitRegion.setSize(shaderBindingTableSize);
+ vk::StridedDeviceAddressRegionKHR rcallRegion = {};
+
+ return ShaderBindingTableRegions{ rgenRegion, rmissRegion, rchitRegion, rcallRegion };
+ }
+
+
+ void RTXModule::RTXDescriptors(std::vector<vkcv::DescriptorSetHandle>& descriptorSetHandles)
+ {
+ //TLAS-Descriptor-Write
+ TopLevelAccelerationStructure tlas = m_asManager->getTLAS();
+ RTXBuffer tlasBuffer = tlas.tlasBuffer;
+ vk::WriteDescriptorSetAccelerationStructureKHR AccelerationDescriptor = {};
+ AccelerationDescriptor.accelerationStructureCount = 1;
+ const TopLevelAccelerationStructure constTLAS = tlas;
+ AccelerationDescriptor.pAccelerationStructures = &constTLAS.vulkanHandle;
+
+ vk::WriteDescriptorSet tlasWrite;
+ tlasWrite.setPNext(&AccelerationDescriptor);
+ tlasWrite.setDstSet(m_core->getDescriptorSet(descriptorSetHandles[0]).vulkanHandle);
+ tlasWrite.setDstBinding(1);
+ tlasWrite.setDstArrayElement(0);
+ tlasWrite.setDescriptorCount(1);
+ tlasWrite.setDescriptorType(vk::DescriptorType::eAccelerationStructureKHR);
+ m_core->getContext().getDevice().updateDescriptorSets(tlasWrite, nullptr);
+ tlasWrite.setDstBinding(2);
+ m_core->getContext().getDevice().updateDescriptorSets(tlasWrite, nullptr);
+
+ //INDEX & VERTEX BUFFER
+ BottomLevelAccelerationStructure blas = m_asManager->getBLAS(0);//HARD CODED
+
+ //VERTEX BUFFER
+ vk::DescriptorBufferInfo vertexInfo = {};
+ vertexInfo.setBuffer(blas.vertexBuffer.vulkanHandle);
+ vertexInfo.setOffset(0);
+ vertexInfo.setRange(blas.vertexBuffer.deviceSize); //maybe check if size is correct
+
+ vk::WriteDescriptorSet vertexWrite;
+ vertexWrite.setDstSet(m_core->getDescriptorSet(descriptorSetHandles[0]).vulkanHandle);
+ vertexWrite.setDstBinding(3);
+ vertexWrite.setDescriptorCount(1);
+ vertexWrite.setDescriptorType(vk::DescriptorType::eStorageBuffer);
+ vertexWrite.setPBufferInfo(&vertexInfo);
+ m_core->getContext().getDevice().updateDescriptorSets(vertexWrite, nullptr);
+
+ //INDEXBUFFER
+ vk::DescriptorBufferInfo indexInfo = {};
+ indexInfo.setBuffer(blas.indexBuffer.vulkanHandle);
+ indexInfo.setOffset(0);
+ indexInfo.setRange(blas.indexBuffer.deviceSize); //maybe check if size is correct
+
+ vk::WriteDescriptorSet indexWrite;
+ indexWrite.setDstSet(m_core->getDescriptorSet(descriptorSetHandles[0]).vulkanHandle);
+ indexWrite.setDstBinding(4);
+ indexWrite.setDescriptorCount(1);
+ indexWrite.setDescriptorType(vk::DescriptorType::eStorageBuffer);
+ indexWrite.setPBufferInfo(&indexInfo);
+ m_core->getContext().getDevice().updateDescriptorSets(indexWrite, nullptr);
+ }
+
+ void RTXModule::createRTXPipelineAndLayout(uint32_t pushConstantSize, std::vector<DescriptorSetLayoutHandle> descriptorSetLayouts, ShaderProgram &rtxShader) {
+ // -- process vkcv::ShaderProgram into vk::ShaderModule
+ std::vector<char> rayGenShaderCode = rtxShader.getShader(ShaderStage::RAY_GEN).shaderCode;
+
+ vk::ShaderModuleCreateInfo rayGenShaderModuleInfo(
+ vk::ShaderModuleCreateFlags(), // vk::ShaderModuleCreateFlags flags_,
+ rayGenShaderCode.size(), // size_t codeSize
+ (const uint32_t*)rayGenShaderCode.data() // const uint32_t* pCode
+ );
+ vk::ShaderModule rayGenShaderModule = m_core->getContext().getDevice().createShaderModule(rayGenShaderModuleInfo);
+ if (!rayGenShaderModule) {
+ vkcv_log(LogLevel::ERROR, "The Ray Generation Shader Module could not be created!");
+ }
+
+ std::vector<char> rayMissShaderCode = rtxShader.getShader(ShaderStage::RAY_MISS).shaderCode;
+ vk::ShaderModuleCreateInfo rayMissShaderModuleInfo(
+ vk::ShaderModuleCreateFlags(), // vk::ShaderModuleCreateFlags flags_,
+ rayMissShaderCode.size(), //size_t codeSize
+ (const uint32_t*)rayMissShaderCode.data() // const uint32_t* pCode
+ );
+
+ vk::ShaderModule rayMissShaderModule = m_core->getContext().getDevice().createShaderModule(rayMissShaderModuleInfo);
+ if (!rayMissShaderModule) {
+ vkcv_log(LogLevel::ERROR, "The Ray Miss Shader Module could not be created!");
+ }
+
+ std::vector<char> rayClosestHitShaderCode = rtxShader.getShader(ShaderStage::RAY_CLOSEST_HIT).shaderCode;
+ vk::ShaderModuleCreateInfo rayClosestHitShaderModuleInfo(
+ vk::ShaderModuleCreateFlags(), // vk::ShaderModuleCreateFlags flags_,
+ rayClosestHitShaderCode.size(), //size_t codeSize
+ (const uint32_t*)rayClosestHitShaderCode.data() // const uint32_t* pCode_
+ );
+ vk::ShaderModule rayClosestHitShaderModule = m_core->getContext().getDevice().createShaderModule(rayClosestHitShaderModuleInfo);
+ if (!rayClosestHitShaderModule) {
+ vkcv_log(LogLevel::ERROR, "The Ray Closest Hit Shader Module could not be created!");
+ }
+
+ // -- PipelineShaderStages
+
+ // ray generation
+ vk::PipelineShaderStageCreateInfo rayGenShaderStageInfo(
+ vk::PipelineShaderStageCreateFlags(), // vk::PipelineShaderStageCreateFlags flags_ = {}
+ vk::ShaderStageFlagBits::eRaygenKHR, // vk::ShaderStageFlagBits stage_ = vk::ShaderStageFlagBits::eVertex,
+ rayGenShaderModule, // vk::ShaderModule module_ = {},
+ "main" // const char* pName_ = {},
+ );
+
+ // ray miss
+ vk::PipelineShaderStageCreateInfo rayMissShaderStageInfo(
+ vk::PipelineShaderStageCreateFlags(), // vk::PipelineShaderStageCreateFlags flags_ = {}
+ vk::ShaderStageFlagBits::eMissKHR, // vk::ShaderStageFlagBits stage_ = vk::ShaderStageFlagBits::eVertex,
+ rayMissShaderModule, // vk::ShaderModule module_ = {},
+ "main" // const char* pName_ = {},
+ );
+
+ // ray closest hit
+ vk::PipelineShaderStageCreateInfo rayClosestHitShaderStageInfo(
+ vk::PipelineShaderStageCreateFlags(), // vk::PipelineShaderStageCreateFlags flags_ = {}
+ vk::ShaderStageFlagBits::eClosestHitKHR, // vk::ShaderStageFlagBits stage_ = vk::ShaderStageFlagBits::eVertex,
+ rayClosestHitShaderModule, // vk::ShaderModule module_ = {},
+ "main" // const char* pName_ = {},
+ );
+
+ std::vector<vk::PipelineShaderStageCreateInfo> shaderStages = { // HARD CODED. TODO: Support more shader stages.
+ rayGenShaderStageInfo, rayMissShaderStageInfo, rayClosestHitShaderStageInfo
+ };
+
+ // -- PipelineLayouts
+
+ std::vector<vk::RayTracingShaderGroupCreateInfoKHR> shaderGroups(shaderStages.size());
+ // Ray Gen
+ shaderGroups[0] = vk::RayTracingShaderGroupCreateInfoKHR(
+ vk::RayTracingShaderGroupTypeKHR::eGeneral, // vk::RayTracingShaderGroupTypeKHR type_ = vk::RayTracingShaderGroupTypeKHR::eGeneral
+ 0, // uint32_t generalShader_ = {}
+ VK_SHADER_UNUSED_KHR, // uint32_t closestHitShader_ = {}
+ VK_SHADER_UNUSED_KHR, // uint32_t anyHitShader_ = {}
+ VK_SHADER_UNUSED_KHR, // uint32_t intersectionShader_ = {}
+ nullptr // const void* pShaderGroupCaptureReplayHandle_ = {}
+ );
+ // Ray Miss
+ shaderGroups[1] = vk::RayTracingShaderGroupCreateInfoKHR(
+ vk::RayTracingShaderGroupTypeKHR::eGeneral, // vk::RayTracingShaderGroupTypeKHR type_ = vk::RayTracingShaderGroupTypeKHR::eGeneral
+ 1, // uint32_t generalShader_ = {}
+ VK_SHADER_UNUSED_KHR, // uint32_t closestHitShader_ = {}
+ VK_SHADER_UNUSED_KHR, // uint32_t anyHitShader_ = {}
+ VK_SHADER_UNUSED_KHR, // uint32_t intersectionShader_ = {}
+ nullptr // const void* pShaderGroupCaptureReplayHandle_ = {}
+ );
+ // Ray Closest Hit
+ shaderGroups[2] = vk::RayTracingShaderGroupCreateInfoKHR(
+ vk::RayTracingShaderGroupTypeKHR::eTrianglesHitGroup, // vk::RayTracingShaderGroupTypeKHR type_ = vk::RayTracingShaderGroupTypeKHR::eGeneral
+ VK_SHADER_UNUSED_KHR, // uint32_t generalShader_ = {}
+ 2, // uint32_t closestHitShader_ = {}
+ VK_SHADER_UNUSED_KHR, // uint32_t anyHitShader_ = {}
+ VK_SHADER_UNUSED_KHR, // uint32_t intersectionShader_ = {}
+ nullptr // const void* pShaderGroupCaptureReplayHandle_ = {}
+ );
+
+ std::vector<vk::DescriptorSetLayout> descriptorSetLayoutsVulkan;
+ for (size_t i=0; i<descriptorSetLayouts.size(); i++) {
+ descriptorSetLayoutsVulkan.push_back(m_core->getDescriptorSetLayout(descriptorSetLayouts[i]).vulkanHandle);
+ }
+
+ vk::PushConstantRange pushConstant(
+ vk::ShaderStageFlagBits::eRaygenKHR | vk::ShaderStageFlagBits::eClosestHitKHR | vk::ShaderStageFlagBits::eMissKHR, // vk::ShaderStageFlags stageFlags_ = {},
+ 0, // uint32_t offset_ = {},
+ pushConstantSize // uint32_t size_ = {}
+ );
+
+ vk::PipelineLayoutCreateInfo rtxPipelineLayoutCreateInfo(
+ vk::PipelineLayoutCreateFlags(), // vk::PipelineLayoutCreateFlags flags_ = {}
+ (uint32_t) descriptorSetLayoutsVulkan.size(), // uint32_t setLayoutCount_ = {} HARD CODED (2)
+ descriptorSetLayoutsVulkan.data(), // const vk::DescriptorSetLayout* pSetLayouts_ = {}
+ 1, // 0, // uint32_t pushConstantRangeCount_ = {}
+ &pushConstant // nullptr // const vk::PushConstantRange* pPushConstantRanges_ = {}
+ );
+
+ m_pipelineLayout = m_core->getContext().getDevice().createPipelineLayout(rtxPipelineLayoutCreateInfo);
+ if (!m_pipelineLayout) {
+ vkcv_log(LogLevel::ERROR, "The RTX Pipeline Layout could not be created!");
+ }
+
+ vk::PipelineLibraryCreateInfoKHR rtxPipelineLibraryCreateInfo(
+ 0, // uint32_t libraryCount_ = {}
+ nullptr // const vk::Pipeline* pLibraries_ = {}
+ );
+
+ // -- RTX Pipeline
+
+ vk::RayTracingPipelineCreateInfoKHR rtxPipelineInfo(
+ vk::PipelineCreateFlags(), // vk::PipelineCreateFlags flags_ = {}
+ (uint32_t) shaderStages.size(), // uint32_t stageCount_ = {}
+ shaderStages.data(), // const vk::PipelineShaderStageCreateInfo* pStages_ = {}
+ (uint32_t) shaderGroups.size(), // uint32_t groupCount_ = {}
+ shaderGroups.data(), // const vk::RayTracingShaderGroupCreateInfoKHR* pGroups_ = {}
+ 16, // uint32_t maxPipelineRayRecursionDepth_ = {}
+ &rtxPipelineLibraryCreateInfo, // const vk::PipelineLibraryCreateInfoKHR* pLibraryInfo_ = {}
+ nullptr, // const vk::RayTracingPipelineInterfaceCreateInfoKHR* pLibraryInterface_ = {}
+ nullptr, // const vk::PipelineDynamicStateCreateInfo* pDynamicState_ = {}
+ m_pipelineLayout // vk::PipelineLayout layout_ = {}
+ );
+
+ auto pipelineResult = m_core->getContext().getDevice().createRayTracingPipelineKHR(
+ vk::DeferredOperationKHR(),
+ vk::PipelineCache(),
+ rtxPipelineInfo,
+ nullptr,
+ m_asManager->getDispatcher()
+ );
+
+ if (pipelineResult.result != vk::Result::eSuccess) {
+ vkcv_log(LogLevel::ERROR, "The RTX Pipeline could not be created!");
+ }
+
+ m_pipeline = pipelineResult.value;
+
+ m_core->getContext().getDevice().destroy(rayGenShaderModule);
+ m_core->getContext().getDevice().destroy(rayMissShaderModule);
+ m_core->getContext().getDevice().destroy(rayClosestHitShaderModule);
+
+ // TODO: add possibility of more than one shader per stage
+ createShaderBindingTable(shaderStages.size());
+ }
+
+ vk::Pipeline RTXModule::getPipeline() {
+ return m_pipeline;
+ }
+
+ vk::Buffer RTXModule::getShaderBindingTableBuffer()
+ {
+ return m_shaderBindingTableBuffer.vulkanHandle;
+ }
+
+ vk::DeviceSize RTXModule::getShaderGroupBaseAlignment()
+ {
+ return m_shaderGroupBaseAlignment;
+ }
+
+ vk::PipelineLayout RTXModule::getPipelineLayout() {
+ return m_pipelineLayout;
+ }
+
+}
\ No newline at end of file
diff --git a/projects/rtx_ambient_occlusion/src/RTX/RTX.hpp b/projects/rtx_ambient_occlusion/src/RTX/RTX.hpp
new file mode 100644
index 0000000000000000000000000000000000000000..ece4ac8e6707039ab3fe166750140a8040aed924
--- /dev/null
+++ b/projects/rtx_ambient_occlusion/src/RTX/RTX.hpp
@@ -0,0 +1,100 @@
+#pragma once
+
+#include <vector>
+#include "vulkan/vulkan.hpp"
+#include <vkcv/Core.hpp>
+#include "ASManager.hpp"
+
+namespace vkcv::rtx {
+
+ //struct that holds all shader binding table regions
+ struct ShaderBindingTableRegions {
+ vk::StridedDeviceAddressRegionKHR rgenRegion;
+ vk::StridedDeviceAddressRegionKHR rmissRegion;
+ vk::StridedDeviceAddressRegionKHR rchitRegion;
+ vk::StridedDeviceAddressRegionKHR rcallRegion;
+ };
+
+ class RTXModule {
+ private:
+
+ Core* m_core;
+ ASManager* m_asManager;
+ vk::Pipeline m_pipeline;
+ vk::PipelineLayout m_pipelineLayout;
+ RTXBuffer m_shaderBindingTableBuffer;
+ vk::DeviceSize m_shaderGroupBaseAlignment;
+
+ public:
+
+ /**
+ * @brief Initializes the @#RTXModule with scene data.
+ * @param core The reference to the @#Core.
+ * @param asManager The reference to the @#ASManager.
+ * @param vertices The vertex data of the scene.
+ * @param indices The index data of the scene.
+ * @param descriptorSetHandles The descriptor set handles for RTX.
+ */
+ RTXModule(Core* core, ASManager* asManager, std::vector<float>& vertices,
+ std::vector<uint32_t>& indices, std::vector<vkcv::DescriptorSetHandle>& descriptorSetHandles);
+
+ /**
+ * @brief Default #RTXModule destructor.
+ */
+ ~RTXModule();
+
+ /**
+ * @brief Returns the RTX pipeline.
+ * @return The RTX pipeline.
+ */
+ vk::Pipeline getPipeline();
+
+ /**
+ * @brief Returns the shader binding table buffer.
+ * @return The shader binding table buffer.
+ */
+ vk::Buffer getShaderBindingTableBuffer();
+
+ /**
+ * @brief Returns the shader group base alignment for partitioning the shader binding table buffer.
+ * @return The shader group base alignment.
+ */
+ vk::DeviceSize getShaderGroupBaseAlignment();
+
+ /**
+ * @brief Returns the RTX pipeline layout.
+ * @return The RTX pipeline layout.
+ */
+ vk::PipelineLayout getPipelineLayout();
+
+ /**
+ * @brief Sets the shader group base alignment and creates the shader binding table by allocating a shader
+ * binding table buffer. The allocation depends on @p shaderCount and the shader group base alignment.
+ * @param shaderCount The amount of shaders to be used for RTX.
+ */
+ void createShaderBindingTable(uint32_t shaderCount);
+
+ /**
+ * @brief Divides the shader binding table into regions for each shader type
+ * (ray generation, ray miss, ray closest hit, callable) and returns them as a struct.
+ * @return The struct holding all four regions of type vk::StridedDeviceAddressRegionKHR.
+ */
+ ShaderBindingTableRegions createRegions();
+
+ /**
+ * @brief Creates Descriptor-Writes for RTX
+ * @param descriptorSetHandles The descriptorSetHandles for RTX.
+ */
+ void RTXDescriptors(std::vector<vkcv::DescriptorSetHandle>& descriptorSetHandles);
+
+ /**
+ * @brief Creates the RTX pipeline and the RTX pipeline layout. Currently, only RayGen, RayClosestHit and
+ * RayMiss are supported.
+ * @param pushConstantSize The size of the push constant used in the RTX shaders.
+ * @param descriptorSetLayouts The descriptor set layout handles.
+ * @param rtxShader The RTX shader program.
+ */
+ void createRTXPipelineAndLayout(uint32_t pushConstantSize, std::vector<DescriptorSetLayoutHandle> descriptorSetLayouts, ShaderProgram &rtxShader);
+ };
+
+}
diff --git a/projects/rtx_ambient_occlusion/src/RTX/RTXExtensions.cpp b/projects/rtx_ambient_occlusion/src/RTX/RTXExtensions.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..133bd8b888f62a56a35c997d2ea75374fbf203a7
--- /dev/null
+++ b/projects/rtx_ambient_occlusion/src/RTX/RTXExtensions.cpp
@@ -0,0 +1,129 @@
+#include "RTXExtensions.hpp"
+
+namespace vkcv::rtx{
+
+RTXExtensions::RTXExtensions()
+{
+
+ // prepare needed raytracing extensions
+ m_instanceExtensions = {
+ VK_KHR_GET_PHYSICAL_DEVICE_PROPERTIES_2_EXTENSION_NAME
+ };
+ m_deviceExtensions = {
+ VK_KHR_MAINTENANCE3_EXTENSION_NAME,
+ VK_EXT_DESCRIPTOR_INDEXING_EXTENSION_NAME,
+ VK_KHR_BUFFER_DEVICE_ADDRESS_EXTENSION_NAME,
+ VK_KHR_DEFERRED_HOST_OPERATIONS_EXTENSION_NAME,
+ VK_KHR_ACCELERATION_STRUCTURE_EXTENSION_NAME,
+ VK_KHR_SPIRV_1_4_EXTENSION_NAME,
+ VK_KHR_RAY_TRACING_PIPELINE_EXTENSION_NAME,
+ VK_KHR_PIPELINE_LIBRARY_EXTENSION_NAME
+ };
+
+ // get all features required by the device extensions
+ for (auto deviceExtension : m_deviceExtensions) {
+ m_features.requireExtension(deviceExtension);
+ }
+
+ /* FIXME: We must disable features that will be mentioned as "not supported" by the FeatureManager. If every unsupported feature is disabled, this should work.
+ * Maybe we find a better workaround...
+ */
+ m_features.requireFeature<vk::PhysicalDeviceVulkan12Features>(
+ [](vk::PhysicalDeviceVulkan12Features& features) {
+ features.setSamplerMirrorClampToEdge(true);
+ features.setDrawIndirectCount(true);
+ features.setStorageBuffer8BitAccess(true);
+ features.setUniformAndStorageBuffer8BitAccess(true);
+ features.setStoragePushConstant8(true);
+ features.setShaderBufferInt64Atomics(true);
+ features.setShaderSharedInt64Atomics(true);
+ features.setShaderFloat16(true);
+ features.setShaderInt8(true);
+ features.setDescriptorIndexing(true);
+ features.setShaderInputAttachmentArrayDynamicIndexing(true);
+ features.setShaderUniformTexelBufferArrayDynamicIndexing(true);
+ features.setShaderStorageTexelBufferArrayDynamicIndexing(true);
+ features.setShaderUniformBufferArrayNonUniformIndexing(true);
+ features.setShaderSampledImageArrayNonUniformIndexing(true);
+ features.setShaderStorageBufferArrayNonUniformIndexing(true);
+ features.setShaderStorageImageArrayNonUniformIndexing(true);
+ features.setShaderInputAttachmentArrayNonUniformIndexing(true);
+ features.setShaderUniformTexelBufferArrayNonUniformIndexing(true);
+ features.setShaderStorageTexelBufferArrayNonUniformIndexing(true);
+ features.setDescriptorBindingUniformBufferUpdateAfterBind(true);
+ features.setDescriptorBindingSampledImageUpdateAfterBind(true);
+ features.setDescriptorBindingStorageImageUpdateAfterBind(true);
+ features.setDescriptorBindingStorageBufferUpdateAfterBind(true);
+ features.setDescriptorBindingUniformTexelBufferUpdateAfterBind(true);
+ features.setDescriptorBindingStorageTexelBufferUpdateAfterBind(true);
+ features.setDescriptorBindingUpdateUnusedWhilePending(true);
+ features.setDescriptorBindingPartiallyBound(true);
+ features.setDescriptorBindingVariableDescriptorCount(true);
+ features.setRuntimeDescriptorArray(true);
+ features.setSamplerFilterMinmax(true);
+ features.setScalarBlockLayout(true);
+ features.setImagelessFramebuffer(true);
+ features.setUniformBufferStandardLayout(true);
+ features.setShaderSubgroupExtendedTypes(true);
+ features.setSeparateDepthStencilLayouts(true);
+ features.setHostQueryReset(true);
+ features.setTimelineSemaphore(true);
+ features.setBufferDeviceAddress(true);
+ features.setBufferDeviceAddressCaptureReplay(true);
+ features.setBufferDeviceAddressMultiDevice(true);
+ features.setVulkanMemoryModel(true);
+ features.setVulkanMemoryModelDeviceScope(true);
+ features.setVulkanMemoryModelAvailabilityVisibilityChains(true);
+ features.setShaderOutputViewportIndex(true);
+ features.setShaderOutputLayer(true);
+ features.setSubgroupBroadcastDynamicId(true);
+ });
+ m_features.requireFeature<vk::PhysicalDeviceVulkan11Features>(
+ [](vk::PhysicalDeviceVulkan11Features& features) {
+ features.setMultiview(true);
+ features.setMultiviewGeometryShader(true);
+ features.setMultiviewTessellationShader(true);
+ // features.setProtectedMemory(true); // not supported
+ features.setSamplerYcbcrConversion(true);
+ features.setShaderDrawParameters(true);
+ features.setStorageBuffer16BitAccess(true);
+ // features.setStorageInputOutput16(true); // not supported
+ features.setStoragePushConstant16(true);
+ features.setUniformAndStorageBuffer16BitAccess(true);
+ features.setVariablePointers(true);
+ features.setVariablePointersStorageBuffer(true);
+ });
+ m_features.requireFeature<vk::PhysicalDeviceAccelerationStructureFeaturesKHR>(
+ [](vk::PhysicalDeviceAccelerationStructureFeaturesKHR& features) {
+ features.setAccelerationStructure(true);
+ features.setAccelerationStructureCaptureReplay(true);
+ // features.setAccelerationStructureIndirectBuild(true); // not supported
+ // features.setAccelerationStructureHostCommands(true); // not supported
+ features.setDescriptorBindingAccelerationStructureUpdateAfterBind(true);
+ });
+ m_features.requireExtensionFeature<vk::PhysicalDeviceRayTracingPipelineFeaturesKHR>(
+ VK_KHR_RAY_TRACING_PIPELINE_EXTENSION_NAME, [](vk::PhysicalDeviceRayTracingPipelineFeaturesKHR& features) {
+ features.setRayTracingPipeline(true);
+ // features.setRayTracingPipelineShaderGroupHandleCaptureReplay(true); // not supported
+ // features.setRayTracingPipelineShaderGroupHandleCaptureReplayMixed(true); // not supported
+ features.setRayTracingPipelineTraceRaysIndirect(true);
+ features.setRayTraversalPrimitiveCulling(true);
+ });
+}
+
+std::vector<const char*> RTXExtensions::getInstanceExtensions()
+{
+ return m_instanceExtensions;
+}
+
+std::vector<const char*> RTXExtensions::getDeviceExtensions()
+{
+ return m_deviceExtensions;
+}
+
+vkcv::Features RTXExtensions::getFeatures()
+{
+ return m_features;
+}
+
+}
\ No newline at end of file
diff --git a/projects/rtx_ambient_occlusion/src/RTX/RTXExtensions.hpp b/projects/rtx_ambient_occlusion/src/RTX/RTXExtensions.hpp
new file mode 100644
index 0000000000000000000000000000000000000000..5ad5ae0769b75aa18672648b5eb3cb598b6f8d47
--- /dev/null
+++ b/projects/rtx_ambient_occlusion/src/RTX/RTXExtensions.hpp
@@ -0,0 +1,36 @@
+#pragma once
+#include <vector>
+#include <vkcv/Core.hpp>
+
+namespace vkcv::rtx{
+
+class RTXExtensions {
+private:
+ std::vector<const char*> m_instanceExtensions; // the instance extensions needed for using RTX
+ std::vector<const char*> m_deviceExtensions; // the device extensions needed for using RTX
+ vkcv::Features m_features; // the features needed to be enabled for using RTX
+public:
+
+ RTXExtensions();
+ ~RTXExtensions()=default;
+ /**
+ * @brief Returns the raytracing instance extensions.
+ * @return The raytracing instance extensions.
+ */
+ std::vector<const char*> getInstanceExtensions();
+
+ /**
+ * @brief Returns the raytracing device extensions.
+ * @return The raytracing device extensions.
+ */
+ std::vector<const char*> getDeviceExtensions();
+
+ /**
+ * @brief Returns the raytracing features.
+ * @return The raytracing features.
+ */
+ vkcv::Features getFeatures();
+
+
+};
+}
\ No newline at end of file
diff --git a/projects/rtx_ambient_occlusion/src/main.cpp b/projects/rtx_ambient_occlusion/src/main.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..bac1fe367031e43cf2fc53d4be23c208f4fb682d
--- /dev/null
+++ b/projects/rtx_ambient_occlusion/src/main.cpp
@@ -0,0 +1,161 @@
+#include <vkcv/Core.hpp>
+#include <vkcv/camera/CameraManager.hpp>
+#include <chrono>
+#include <vkcv/shader/GLSLCompiler.hpp>
+#include "RTX/RTX.hpp"
+#include "RTX/RTXExtensions.hpp"
+#include "teapot.hpp"
+
+/**
+ * Note: This project is based on the following tutorial https://github.com/Apress/Ray-Tracing-Gems-II/tree/main/Chapter_16.
+ */
+
+int main(int argc, const char** argv) {
+ const char* applicationName = "RTX Ambient Occlusion";
+
+ uint32_t windowWidth = 800;
+ uint32_t windowHeight = 600;
+
+ // prepare raytracing extensions. IMPORTANT: configure compiler to build in 64 bit mode
+ vkcv::rtx::RTXExtensions rtxExtensions;
+ std::vector<const char*> raytracingInstanceExtensions = rtxExtensions.getInstanceExtensions();
+
+ std::vector<const char*> instanceExtensions = {}; // add some more instance extensions, if needed
+ instanceExtensions.insert(instanceExtensions.end(), raytracingInstanceExtensions.begin(), raytracingInstanceExtensions.end()); // merge together all instance extensions
+
+ vkcv::Features features = rtxExtensions.getFeatures(); // all features required by the RTX device extensions
+ features.requireExtension(VK_KHR_SWAPCHAIN_EXTENSION_NAME);
+ vkcv::Core core = vkcv::Core::create(
+ applicationName,
+ VK_MAKE_VERSION(0, 0, 1),
+ { vk::QueueFlagBits::eGraphics ,vk::QueueFlagBits::eCompute , vk::QueueFlagBits::eTransfer },
+ features,
+ instanceExtensions
+ );
+
+ vkcv::rtx::ASManager asManager(&core);
+
+ vkcv::WindowHandle windowHandle = core.createWindow(applicationName, windowWidth, windowHeight, false);
+
+ vkcv::camera::CameraManager cameraManager(core.getWindow(windowHandle));
+ uint32_t camIndex = cameraManager.addCamera(vkcv::camera::ControllerType::TRACKBALL);
+ cameraManager.getCamera(camIndex).setNearFar(0.1f, 30.0f);
+
+ // get Teapot vertices and indices
+ Teapot teapot;
+ std::vector<float> vertices = teapot.getVertices();
+ std::vector<uint32_t> indices = teapot.getIndices();
+
+ vkcv::shader::GLSLCompiler compiler;
+
+ vkcv::ShaderProgram rtxShaderProgram;
+ compiler.compile(vkcv::ShaderStage::RAY_GEN, std::filesystem::path("resources/shaders/ambientOcclusion.rgen"),
+ [&rtxShaderProgram](vkcv::ShaderStage shaderStage, const std::filesystem::path& path) {
+ rtxShaderProgram.addShader(shaderStage, path);
+ });
+
+ compiler.compile(vkcv::ShaderStage::RAY_CLOSEST_HIT, std::filesystem::path("resources/shaders/ambientOcclusion.rchit"),
+ [&rtxShaderProgram](vkcv::ShaderStage shaderStage, const std::filesystem::path& path) {
+ rtxShaderProgram.addShader(shaderStage, path);
+ });
+
+ compiler.compile(vkcv::ShaderStage::RAY_MISS, std::filesystem::path("resources/shaders/ambientOcclusion.rmiss"),
+ [&rtxShaderProgram](vkcv::ShaderStage shaderStage, const std::filesystem::path& path) {
+ rtxShaderProgram.addShader(shaderStage, path);
+ });
+
+ std::vector<vkcv::DescriptorSetHandle> descriptorSetHandles;
+ std::vector<vkcv::DescriptorSetLayoutHandle> descriptorSetLayoutHandles;
+
+ vkcv::DescriptorSetLayoutHandle rtxShaderDescriptorSetLayout = core.createDescriptorSetLayout(rtxShaderProgram.getReflectedDescriptors().at(0));
+ vkcv::DescriptorSetHandle rtxShaderDescriptorSet = core.createDescriptorSet(rtxShaderDescriptorSetLayout);
+ descriptorSetHandles.push_back(rtxShaderDescriptorSet);
+ descriptorSetLayoutHandles.push_back(rtxShaderDescriptorSetLayout);
+
+ // init RTXModule
+ vkcv::rtx::RTXModule rtxModule(&core, &asManager, vertices, indices,descriptorSetHandles);
+
+ struct RaytracingPushConstantData {
+ glm::vec4 camera_position; // as origin for ray generation
+ glm::vec4 camera_right; // for computing ray direction
+ glm::vec4 camera_up; // for computing ray direction
+ glm::vec4 camera_forward; // for computing ray direction
+ };
+
+ uint32_t pushConstantSize = sizeof(RaytracingPushConstantData);
+
+ rtxModule.createRTXPipelineAndLayout(pushConstantSize, descriptorSetLayoutHandles, rtxShaderProgram);
+
+ vk::Pipeline rtxPipeline = rtxModule.getPipeline();
+ vk::PipelineLayout rtxPipelineLayout = rtxModule.getPipelineLayout();
+
+ vkcv::rtx::ShaderBindingTableRegions rtxRegions = rtxModule.createRegions();
+
+ vkcv::ImageHandle depthBuffer = core.createImage(vk::Format::eD32Sfloat, windowWidth, windowHeight).getHandle();
+
+ const vkcv::ImageHandle swapchainInput = vkcv::ImageHandle::createSwapchainImageHandle();
+
+ vkcv::DescriptorWrites rtxWrites;
+
+ auto start = std::chrono::system_clock::now();
+ while (vkcv::Window::hasOpenWindow()) {
+ vkcv::Window::pollEvents();
+
+ if(core.getWindow(windowHandle).getHeight() == 0 || core.getWindow(windowHandle).getWidth() == 0)
+ continue;
+
+ uint32_t swapchainWidth, swapchainHeight;
+ if (!core.beginFrame(swapchainWidth, swapchainHeight,windowHandle)) {
+ continue;
+ }
+
+ if ((swapchainWidth != windowWidth) || ((swapchainHeight != windowHeight))) {
+ depthBuffer = core.createImage(vk::Format::eD32Sfloat, swapchainWidth, swapchainHeight).getHandle();
+
+ windowWidth = swapchainWidth;
+ windowHeight = swapchainHeight;
+ }
+
+ auto end = std::chrono::system_clock::now();
+ auto deltatime = std::chrono::duration_cast<std::chrono::microseconds>(end - start);
+
+ start = end;
+ cameraManager.update(0.000001 * static_cast<double>(deltatime.count()));
+
+ const std::vector<vkcv::ImageHandle> renderTargets = { swapchainInput, depthBuffer };
+
+ RaytracingPushConstantData raytracingPushData;
+ raytracingPushData.camera_position = glm::vec4(cameraManager.getActiveCamera().getPosition(),0);
+ raytracingPushData.camera_right = glm::vec4(glm::cross(cameraManager.getActiveCamera().getUp(), cameraManager.getActiveCamera().getFront()), 0);
+ raytracingPushData.camera_up = glm::vec4(cameraManager.getActiveCamera().getUp(),0);
+ raytracingPushData.camera_forward = glm::vec4(cameraManager.getActiveCamera().getFront(),0);
+
+ vkcv::PushConstants pushConstantsRTX(sizeof(RaytracingPushConstantData));
+ pushConstantsRTX.appendDrawcall(raytracingPushData);
+
+ auto cmdStream = core.createCommandStream(vkcv::QueueType::Graphics);
+
+ rtxWrites.storageImageWrites = { vkcv::StorageImageDescriptorWrite(0, swapchainInput) };
+ core.writeDescriptorSet(rtxShaderDescriptorSet, rtxWrites);
+
+ core.prepareImageForStorage(cmdStream, swapchainInput);
+
+ core.recordRayGenerationToCmdStream(
+ cmdStream,
+ rtxPipeline,
+ rtxPipelineLayout,
+ rtxRegions.rgenRegion,
+ rtxRegions.rmissRegion,
+ rtxRegions.rchitRegion,
+ rtxRegions.rcallRegion,
+ { vkcv::DescriptorSetUsage(0, core.getDescriptorSet(rtxShaderDescriptorSet).vulkanHandle)},
+ pushConstantsRTX,
+ windowHandle);
+
+ core.prepareSwapchainImageForPresent(cmdStream);
+ core.submitCommandStream(cmdStream);
+ core.endFrame(windowHandle);
+ }
+
+ return 0;
+}
diff --git a/projects/rtx_ambient_occlusion/src/teapot.hpp b/projects/rtx_ambient_occlusion/src/teapot.hpp
new file mode 100644
index 0000000000000000000000000000000000000000..1f35400a313b230f92098fa2ef59cc3c8f3a30df
--- /dev/null
+++ b/projects/rtx_ambient_occlusion/src/teapot.hpp
@@ -0,0 +1,7114 @@
+#pragma once
+#include <vector>
+
+class Teapot {
+public:
+ /**
+ * @brief The default constructor.
+ */
+ Teapot() = default;
+
+ /**
+ * default destructor
+ */
+ ~Teapot() = default;
+
+ /**
+ * @brief Returns the vertex data of the teapot.
+ * @return The vertex data of the teapot.
+ */
+ std::vector<float> getVertices() {
+ return m_teapotVertices;
+ }
+
+ /**
+ * @brief Returns the index data of the teapot.
+ * @return The index data of the teapot.
+ */
+ std::vector<uint32_t> getIndices() {
+ return m_teapotIndices;
+ }
+
+private:
+
+ std::vector<float> m_teapotVertices =
+ {
+ 0.69999999f, 0.45000005f, 0.00000001f,
+ 0.69098389f, 0.44999996f, 0.11485600f,
+ 0.66483200f, 0.45000011f, 0.22332802f,
+ 0.62288797f, 0.45000002f, 0.32407200f,
+ 0.56649601f, 0.45000008f, 0.41574404f,
+ 0.49699998f, 0.45000005f, 0.49700001f,
+ 0.41574395f, 0.45000005f, 0.56649601f,
+ 0.32407200f, 0.45000008f, 0.62288797f,
+ 0.22332799f, 0.45000005f, 0.66483200f,
+ 0.11485596f, 0.45000005f, 0.69098401f,
+ 0.00000000f, 0.45000005f, 0.69999999f,
+ 0.69296241f, 0.46771872f, 0.00000001f,
+ 0.68403697f, 0.46771869f, 0.11370128f,
+ 0.65814799f, 0.46771878f, 0.22108276f,
+ 0.61662567f, 0.46771872f, 0.32081389f,
+ 0.56080067f, 0.46771872f, 0.41156429f,
+ 0.49200332f, 0.46771872f, 0.49200332f,
+ 0.41156423f, 0.46771872f, 0.56080067f,
+ 0.32081389f, 0.46771872f, 0.61662567f,
+ 0.22108275f, 0.46771872f, 0.65814799f,
+ 0.11370124f, 0.46771872f, 0.68403703f,
+ 0.00000000f, 0.46771872f, 0.69296241f,
+ 0.69020003f, 0.48150003f, 0.00000001f,
+ 0.68131018f, 0.48149997f, 0.11324803f,
+ 0.65552443f, 0.48150006f, 0.22020143f,
+ 0.61416763f, 0.48150000f, 0.31953502f,
+ 0.55856514f, 0.48150009f, 0.40992361f,
+ 0.49004203f, 0.48150003f, 0.49004203f,
+ 0.40992361f, 0.48150006f, 0.55856514f,
+ 0.31953505f, 0.48150003f, 0.61416763f,
+ 0.22020143f, 0.48150003f, 0.65552437f,
+ 0.11324799f, 0.48150003f, 0.68131030f,
+ 0.00000000f, 0.48150003f, 0.69020003f,
+ 0.69111252f, 0.49134374f, 0.00000001f,
+ 0.68221092f, 0.49134374f, 0.11339775f,
+ 0.65639102f, 0.49134377f, 0.22049254f,
+ 0.61497957f, 0.49134377f, 0.31995746f,
+ 0.55930358f, 0.49134377f, 0.41046557f,
+ 0.49068987f, 0.49134374f, 0.49068987f,
+ 0.41046554f, 0.49134374f, 0.55930358f,
+ 0.31995746f, 0.49134374f, 0.61497957f,
+ 0.22049253f, 0.49134377f, 0.65639102f,
+ 0.11339770f, 0.49134374f, 0.68221098f,
+ 0.00000000f, 0.49134374f, 0.69111252f,
+ 0.69510001f, 0.49725008f, 0.00000001f,
+ 0.68614709f, 0.49725005f, 0.11405202f,
+ 0.66017824f, 0.49725014f, 0.22176473f,
+ 0.61852777f, 0.49725008f, 0.32180351f,
+ 0.56253058f, 0.49725008f, 0.41283381f,
+ 0.49352103f, 0.49725008f, 0.49352100f,
+ 0.41283381f, 0.49725008f, 0.56253058f,
+ 0.32180351f, 0.49725008f, 0.61852777f,
+ 0.22176471f, 0.49725008f, 0.66017818f,
+ 0.11405198f, 0.49725008f, 0.68614715f,
+ 0.00000000f, 0.49725008f, 0.69510001f,
+ 0.70156252f, 0.49921876f, 0.00000001f,
+ 0.69252634f, 0.49921870f, 0.11511238f,
+ 0.66631603f, 0.49921876f, 0.22382653f,
+ 0.62427837f, 0.49921873f, 0.32479537f,
+ 0.56776059f, 0.49921879f, 0.41667202f,
+ 0.49810940f, 0.49921876f, 0.49810940f,
+ 0.41667199f, 0.49921879f, 0.56776053f,
+ 0.32479542f, 0.49921876f, 0.62427843f,
+ 0.22382650f, 0.49921876f, 0.66631603f,
+ 0.11511234f, 0.49921876f, 0.69252640f,
+ 0.00000000f, 0.49921876f, 0.70156252f,
+ 0.70989996f, 0.49725002f, 0.00000001f,
+ 0.70075637f, 0.49724996f, 0.11648039f,
+ 0.67423457f, 0.49725008f, 0.22648652f,
+ 0.63169742f, 0.49724999f, 0.32865530f,
+ 0.57450789f, 0.49725002f, 0.42162383f,
+ 0.50402898f, 0.49725002f, 0.50402898f,
+ 0.42162377f, 0.49725002f, 0.57450783f,
+ 0.32865530f, 0.49725002f, 0.63169742f,
+ 0.22648649f, 0.49725005f, 0.67423463f,
+ 0.11648035f, 0.49725002f, 0.70075643f,
+ 0.00000000f, 0.49725002f, 0.70989996f,
+ 0.71951252f, 0.49134377f, 0.00000001f,
+ 0.71024513f, 0.49134374f, 0.11805762f,
+ 0.68336421f, 0.49134380f, 0.22955328f,
+ 0.64025098f, 0.49134377f, 0.33310553f,
+ 0.58228713f, 0.49134383f, 0.42733288f,
+ 0.51085389f, 0.49134377f, 0.51085389f,
+ 0.42733288f, 0.49134377f, 0.58228713f,
+ 0.33310553f, 0.49134377f, 0.64025104f,
+ 0.22955328f, 0.49134380f, 0.68336427f,
+ 0.11805756f, 0.49134377f, 0.71024519f,
+ 0.00000000f, 0.49134377f, 0.71951252f,
+ 0.72979999f, 0.48150003f, 0.00000001f,
+ 0.72040009f, 0.48149997f, 0.11974559f,
+ 0.69313490f, 0.48150006f, 0.23283541f,
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+ 1.26874995f, 0.06093749f, -0.17062500f,
+ 1.24654996f, 0.08730000f, -0.16380000f,
+ 1.22615004f, 0.11152498f, -0.14332500f,
+ 1.20935011f, 0.13147499f, -0.10920000f,
+ 1.19795001f, 0.14501248f, -0.06142498f,
+ 1.19375002f, 0.14999998f, 0.00000000f,
+ 1.37559998f, 0.08460006f, 0.00000000f,
+ 1.37116480f, 0.08821206f, -0.05323320f,
+ 1.35912645f, 0.09801605f, -0.09463680f,
+ 1.34138560f, 0.11246406f, -0.12421079f,
+ 1.31984317f, 0.13000806f, -0.14195520f,
+ 1.29639995f, 0.14910004f, -0.14786999f,
+ 1.27295685f, 0.16819203f, -0.14195520f,
+ 1.25141430f, 0.18573603f, -0.12421080f,
+ 1.23367357f, 0.20018402f, -0.09463680f,
+ 1.22163510f, 0.20998801f, -0.05323318f,
+ 1.21719992f, 0.21360001f, 0.00000000f,
+ 1.41105008f, 0.19417503f, 0.00000000f,
+ 1.40622830f, 0.19653751f, -0.04570560f,
+ 1.39314139f, 0.20295003f, -0.08125441f,
+ 1.37385488f, 0.21240002f, -0.10664640f,
+ 1.35043585f, 0.22387503f, -0.12188162f,
+ 1.32494998f, 0.23636252f, -0.12696001f,
+ 1.29946434f, 0.24885002f, -0.12188160f,
+ 1.27604532f, 0.26032501f, -0.10664640f,
+ 1.25675893f, 0.26977503f, -0.08125440f,
+ 1.24367166f, 0.27618751f, -0.04570558f,
+ 1.23885000f, 0.27855000f, 0.00000000f,
+ 1.46120000f, 0.29520005f, 0.00000000f,
+ 1.45568943f, 0.29650205f, -0.03950639f,
+ 1.44073284f, 0.30003604f, -0.07023360f,
+ 1.41869116f, 0.30524403f, -0.09218159f,
+ 1.39192653f, 0.31156805f, -0.10535039f,
+ 1.36280012f, 0.31845003f, -0.10973999f,
+ 1.33367360f, 0.32533202f, -0.10535039f,
+ 1.30690885f, 0.33165604f, -0.09218159f,
+ 1.28486729f, 0.33686402f, -0.07023359f,
+ 1.26991045f, 0.34039801f, -0.03950638f,
+ 1.26440001f, 0.34170002f, 0.00000000f,
+ 1.53715003f, 0.38227507f, 0.00000000f,
+ 1.53049695f, 0.38276854f, -0.03529979f,
+ 1.51243961f, 0.38410810f, -0.06275519f,
+ 1.48582840f, 0.38608205f, -0.08236619f,
+ 1.45351493f, 0.38847908f, -0.09413280f,
+ 1.41835010f, 0.39108753f, -0.09805499f,
+ 1.38318527f, 0.39369607f, -0.09413280f,
+ 1.35087168f, 0.39609307f, -0.08236620f,
+ 1.32426047f, 0.39806706f, -0.06275519f,
+ 1.30620289f, 0.39940655f, -0.03529978f,
+ 1.29955006f, 0.39990005f, 0.00000000f,
+ 1.64999998f, 0.45000005f, 0.00000001f,
+ 1.64159989f, 0.44999996f, -0.03374999f,
+ 1.61880016f, 0.45000011f, -0.05999999f,
+ 1.58519995f, 0.45000002f, -0.07874999f,
+ 1.54440010f, 0.45000008f, -0.09000000f,
+ 1.50000000f, 0.45000005f, -0.09374999f,
+ 1.45560002f, 0.45000005f, -0.08999999f,
+ 1.41480005f, 0.45000008f, -0.07875000f,
+ 1.38120008f, 0.45000005f, -0.05999999f,
+ 1.35839999f, 0.45000005f, -0.03374998f,
+ 1.35000002f, 0.45000005f, 0.00000001f,
+ 1.35000002f, 0.45000005f, 0.00000001f,
+ 1.35839975f, 0.44999996f, 0.03375000f,
+ 1.38120008f, 0.45000011f, 0.06000001f,
+ 1.41480005f, 0.45000002f, 0.07875000f,
+ 1.45560014f, 0.45000008f, 0.09000000f,
+ 1.50000000f, 0.45000005f, 0.09375000f,
+ 1.54439998f, 0.45000005f, 0.09000000f,
+ 1.58520007f, 0.45000008f, 0.07875000f,
+ 1.61880004f, 0.45000005f, 0.06000000f,
+ 1.64159989f, 0.45000005f, 0.03374999f,
+ 1.64999998f, 0.45000005f, 0.00000001f,
+ 1.36489987f, 0.46012494f, 0.00000001f,
+ 1.37370336f, 0.46020287f, 0.03337200f,
+ 1.39759886f, 0.46041453f, 0.05932800f,
+ 1.43281305f, 0.46072635f, 0.07786799f,
+ 1.47557306f, 0.46110505f, 0.08899199f,
+ 1.52210617f, 0.46151716f, 0.09269999f,
+ 1.56863928f, 0.46192923f, 0.08899198f,
+ 1.61139929f, 0.46230793f, 0.07786799f,
+ 1.64661360f, 0.46261978f, 0.05932799f,
+ 1.67050874f, 0.46283138f, 0.03337199f,
+ 1.67931235f, 0.46290934f, 0.00000001f,
+ 1.37919998f, 0.46800002f, 0.00000001f,
+ 1.38818228f, 0.46815118f, 0.03234600f,
+ 1.41256332f, 0.46856162f, 0.05750401f,
+ 1.44849277f, 0.46916643f, 0.07547401f,
+ 1.49212170f, 0.46990088f, 0.08625601f,
+ 1.53960001f, 0.47070009f, 0.08985001f,
+ 1.58707845f, 0.47149926f, 0.08625601f,
+ 1.63070726f, 0.47223371f, 0.07547401f,
+ 1.66663694f, 0.47283852f, 0.05750401f,
+ 1.69101763f, 0.47324890f, 0.03234600f,
+ 1.70000005f, 0.47340012f, 0.00000001f,
+ 1.39230001f, 0.47362497f, 0.00000001f,
+ 1.40126371f, 0.47383994f, 0.03083400f,
+ 1.42559445f, 0.47442356f, 0.05481601f,
+ 1.46144974f, 0.47528344f, 0.07194600f,
+ 1.50498855f, 0.47632772f, 0.08222401f,
+ 1.55236876f, 0.47746408f, 0.08565000f,
+ 1.59974909f, 0.47860044f, 0.08222400f,
+ 1.64328790f, 0.47964469f, 0.07194600f,
+ 1.67914319f, 0.48050463f, 0.05481600f,
+ 1.70347357f, 0.48108816f, 0.03083399f,
+ 1.71243751f, 0.48130316f, 0.00000001f,
+ 1.40359998f, 0.47700000f, 0.00000001f,
+ 1.41237509f, 0.47726458f, 0.02899800f,
+ 1.43619370f, 0.47798279f, 0.05155201f,
+ 1.47129452f, 0.47904122f, 0.06766201f,
+ 1.51391697f, 0.48032647f, 0.07732801f,
+ 1.56030011f, 0.48172504f, 0.08055001f,
+ 1.60668325f, 0.48312366f, 0.07732800f,
+ 1.64930582f, 0.48440886f, 0.06766201f,
+ 1.68440676f, 0.48546728f, 0.05155201f,
+ 1.70822501f, 0.48618549f, 0.02899799f,
+ 1.71700025f, 0.48645008f, 0.00000001f,
+ 1.41249990f, 0.47812498f, 0.00000001f,
+ 1.42094362f, 0.47842023f, 0.02700000f,
+ 1.44386256f, 0.47922191f, 0.04800001f,
+ 1.47763753f, 0.48040313f, 0.06300000f,
+ 1.51865005f, 0.48183754f, 0.07200000f,
+ 1.56328130f, 0.48339847f, 0.07500000f,
+ 1.60791266f, 0.48495942f, 0.07200000f,
+ 1.64892507f, 0.48639381f, 0.06300000f,
+ 1.68270016f, 0.48757505f, 0.04800000f,
+ 1.70561898f, 0.48837662f, 0.02700000f,
+ 1.71406269f, 0.48867193f, 0.00000001f,
+ 1.41839993f, 0.47700000f, 0.00000001f,
+ 1.42639649f, 0.47730237f, 0.02500200f,
+ 1.44810247f, 0.47812322f, 0.04444801f,
+ 1.48008955f, 0.47933280f, 0.05833800f,
+ 1.51893127f, 0.48080164f, 0.06667200f,
+ 1.56120014f, 0.48240003f, 0.06945001f,
+ 1.60346889f, 0.48399845f, 0.06667200f,
+ 1.64231050f, 0.48546726f, 0.05833801f,
+ 1.67429769f, 0.48667687f, 0.04444801f,
+ 1.69600332f, 0.48749766f, 0.02500200f,
+ 1.70400012f, 0.48780006f, 0.00000001f,
+ 1.42070007f, 0.47362500f, 0.00000001f,
+ 1.42816150f, 0.47390610f, 0.02316600f,
+ 1.44841480f, 0.47466925f, 0.04118401f,
+ 1.47826135f, 0.47579375f, 0.05405401f,
+ 1.51450372f, 0.47715935f, 0.06177600f,
+ 1.55394375f, 0.47864535f, 0.06435001f,
+ 1.59338403f, 0.48013136f, 0.06177600f,
+ 1.62962627f, 0.48149687f, 0.05405401f,
+ 1.65947294f, 0.48262146f, 0.04118400f,
+ 1.67972589f, 0.48338455f, 0.02316600f,
+ 1.68718755f, 0.48366567f, 0.00000001f,
+ 1.41880012f, 0.46799999f, 0.00000001f,
+ 1.42566562f, 0.46822673f, 0.02165400f,
+ 1.44430101f, 0.46884245f, 0.03849601f,
+ 1.47176325f, 0.46974963f, 0.05052601f,
+ 1.50511050f, 0.47085124f, 0.05774401f,
+ 1.54139996f, 0.47205001f, 0.06015000f,
+ 1.57768965f, 0.47324884f, 0.05774400f,
+ 1.61103690f, 0.47435045f, 0.05052601f,
+ 1.63849926f, 0.47525764f, 0.03849601f,
+ 1.65713453f, 0.47587326f, 0.02165400f,
+ 1.66400003f, 0.47610006f, 0.00000001f,
+ 1.41209996f, 0.46012503f, 0.00000001f,
+ 1.41833580f, 0.46025965f, 0.02062801f,
+ 1.43526208f, 0.46062523f, 0.03667201f,
+ 1.46020591f, 0.46116382f, 0.04813201f,
+ 1.49049485f, 0.46181795f, 0.05500801f,
+ 1.52345622f, 0.46252972f, 0.05730001f,
+ 1.55641770f, 0.46324152f, 0.05500801f,
+ 1.58670676f, 0.46389559f, 0.04813201f,
+ 1.61165047f, 0.46443427f, 0.03667201f,
+ 1.62857664f, 0.46479973f, 0.02062800f,
+ 1.63481259f, 0.46493441f, 0.00000001f,
+ 1.39999998f, 0.45000005f, 0.00000001f,
+ 1.40559983f, 0.44999996f, 0.02025001f,
+ 1.42079997f, 0.45000011f, 0.03600001f,
+ 1.44319999f, 0.45000002f, 0.04725001f,
+ 1.47040009f, 0.45000008f, 0.05400001f,
+ 1.50000000f, 0.45000005f, 0.05625001f,
+ 1.52960002f, 0.45000005f, 0.05400001f,
+ 1.55680001f, 0.45000008f, 0.04725001f,
+ 1.57920003f, 0.45000005f, 0.03600001f,
+ 1.59440005f, 0.45000005f, 0.02025000f,
+ 1.60000002f, 0.45000005f, 0.00000001f,
+ 1.64999998f, 0.45000005f, 0.00000001f,
+ 1.64159989f, 0.44999996f, -0.03374999f,
+ 1.61880016f, 0.45000011f, -0.05999999f,
+ 1.58519995f, 0.45000002f, -0.07874999f,
+ 1.54440010f, 0.45000008f, -0.09000000f,
+ 1.50000000f, 0.45000005f, -0.09374999f,
+ 1.45560002f, 0.45000005f, -0.08999999f,
+ 1.41480005f, 0.45000008f, -0.07875000f,
+ 1.38120008f, 0.45000005f, -0.05999999f,
+ 1.35839999f, 0.45000005f, -0.03374998f,
+ 1.35000002f, 0.45000005f, 0.00000001f,
+ 1.67931235f, 0.46290934f, 0.00000001f,
+ 1.67050874f, 0.46283132f, -0.03337199f,
+ 1.64661360f, 0.46261978f, -0.05932799f,
+ 1.61139941f, 0.46230793f, -0.07786798f,
+ 1.56863928f, 0.46192926f, -0.08899198f,
+ 1.52210605f, 0.46151716f, -0.09269998f,
+ 1.47557306f, 0.46110505f, -0.08899198f,
+ 1.43281293f, 0.46072638f, -0.07786798f,
+ 1.39759874f, 0.46041453f, -0.05932799f,
+ 1.37370336f, 0.46020290f, -0.03337198f,
+ 1.36489987f, 0.46012494f, 0.00000001f,
+ 1.70000005f, 0.47340012f, 0.00000001f,
+ 1.69101751f, 0.47324887f, -0.03234600f,
+ 1.66663706f, 0.47283855f, -0.05750400f,
+ 1.63070726f, 0.47223368f, -0.07547399f,
+ 1.58707845f, 0.47149929f, -0.08625600f,
+ 1.53960001f, 0.47070006f, -0.08985000f,
+ 1.49212158f, 0.46990088f, -0.08625600f,
+ 1.44849288f, 0.46916646f, -0.07547400f,
+ 1.41256320f, 0.46856165f, -0.05750399f,
+ 1.38818240f, 0.46815124f, -0.03234598f,
+ 1.37919998f, 0.46800002f, 0.00000001f,
+ 1.71243751f, 0.48130316f, 0.00000001f,
+ 1.70347345f, 0.48108810f, -0.03083399f,
+ 1.67914343f, 0.48050466f, -0.05481599f,
+ 1.64328778f, 0.47964469f, -0.07194599f,
+ 1.59974921f, 0.47860047f, -0.08222400f,
+ 1.55236864f, 0.47746405f, -0.08564999f,
+ 1.50498843f, 0.47632769f, -0.08222400f,
+ 1.46144986f, 0.47528344f, -0.07194600f,
+ 1.42559433f, 0.47442353f, -0.05481599f,
+ 1.40126395f, 0.47383997f, -0.03083398f,
+ 1.39230001f, 0.47362497f, 0.00000001f,
+ 1.71700025f, 0.48645008f, 0.00000001f,
+ 1.70822489f, 0.48618543f, -0.02899799f,
+ 1.68440676f, 0.48546731f, -0.05155200f,
+ 1.64930582f, 0.48440889f, -0.06766199f,
+ 1.60668337f, 0.48312369f, -0.07732800f,
+ 1.56030011f, 0.48172504f, -0.08055000f,
+ 1.51391685f, 0.48032641f, -0.07732800f,
+ 1.47129452f, 0.47904122f, -0.06766200f,
+ 1.43619370f, 0.47798282f, -0.05155200f,
+ 1.41237521f, 0.47726461f, -0.02899799f,
+ 1.40359998f, 0.47700000f, 0.00000001f,
+ 1.71406269f, 0.48867193f, 0.00000001f,
+ 1.70561886f, 0.48837656f, -0.02699999f,
+ 1.68270016f, 0.48757505f, -0.04800000f,
+ 1.64892519f, 0.48639381f, -0.06299999f,
+ 1.60791278f, 0.48495948f, -0.07200000f,
+ 1.56328130f, 0.48339844f, -0.07500000f,
+ 1.51865005f, 0.48183751f, -0.07200000f,
+ 1.47763753f, 0.48040313f, -0.06299999f,
+ 1.44386244f, 0.47922188f, -0.04799999f,
+ 1.42094362f, 0.47842029f, -0.02699998f,
+ 1.41249990f, 0.47812498f, 0.00000001f,
+ 1.70400012f, 0.48780006f, 0.00000001f,
+ 1.69600320f, 0.48749760f, -0.02500199f,
+ 1.67429769f, 0.48667687f, -0.04444800f,
+ 1.64231050f, 0.48546728f, -0.05833799f,
+ 1.60346901f, 0.48399848f, -0.06667200f,
+ 1.56120002f, 0.48240003f, -0.06944999f,
+ 1.51893127f, 0.48080158f, -0.06667199f,
+ 1.48008966f, 0.47933280f, -0.05833799f,
+ 1.44810236f, 0.47812319f, -0.04444799f,
+ 1.42639661f, 0.47730240f, -0.02500199f,
+ 1.41839993f, 0.47700000f, 0.00000001f,
+ 1.68718755f, 0.48366567f, 0.00000001f,
+ 1.67972589f, 0.48338449f, -0.02316599f,
+ 1.65947306f, 0.48262149f, -0.04118400f,
+ 1.62962627f, 0.48149690f, -0.05405399f,
+ 1.59338415f, 0.48013139f, -0.06177600f,
+ 1.55394387f, 0.47864535f, -0.06434999f,
+ 1.51450372f, 0.47715932f, -0.06177600f,
+ 1.47826147f, 0.47579378f, -0.05405399f,
+ 1.44841480f, 0.47466925f, -0.04118399f,
+ 1.42816162f, 0.47390613f, -0.02316599f,
+ 1.42070007f, 0.47362500f, 0.00000001f,
+ 1.66400003f, 0.47610006f, 0.00000001f,
+ 1.65713418f, 0.47587320f, -0.02165399f,
+ 1.63849938f, 0.47525769f, -0.03849600f,
+ 1.61103702f, 0.47435045f, -0.05052599f,
+ 1.57768977f, 0.47324887f, -0.05774400f,
+ 1.54140007f, 0.47205001f, -0.06015000f,
+ 1.50511050f, 0.47085121f, -0.05774400f,
+ 1.47176337f, 0.46974963f, -0.05052600f,
+ 1.44430089f, 0.46884239f, -0.03849599f,
+ 1.42566574f, 0.46822679f, -0.02165399f,
+ 1.41880012f, 0.46799999f, 0.00000001f,
+ 1.63481259f, 0.46493441f, 0.00000001f,
+ 1.62857652f, 0.46479967f, -0.02062799f,
+ 1.61165059f, 0.46443427f, -0.03667200f,
+ 1.58670664f, 0.46389559f, -0.04813199f,
+ 1.55641782f, 0.46324155f, -0.05500800f,
+ 1.52345634f, 0.46252972f, -0.05730000f,
+ 1.49049485f, 0.46181795f, -0.05500799f,
+ 1.46020591f, 0.46116385f, -0.04813200f,
+ 1.43526220f, 0.46062523f, -0.03667200f,
+ 1.41833591f, 0.46025968f, -0.02062799f,
+ 1.41209996f, 0.46012503f, 0.00000001f,
+ 1.60000002f, 0.45000005f, 0.00000001f,
+ 1.59439981f, 0.44999996f, -0.02024999f,
+ 1.57920015f, 0.45000011f, -0.03600000f,
+ 1.55680001f, 0.45000002f, -0.04725000f,
+ 1.52960002f, 0.45000008f, -0.05400000f,
+ 1.50000000f, 0.45000005f, -0.05625000f,
+ 1.47039998f, 0.45000005f, -0.05400000f,
+ 1.44320011f, 0.45000008f, -0.04725000f,
+ 1.42079997f, 0.45000005f, -0.03599999f,
+ 1.40559995f, 0.45000005f, -0.02024999f,
+ 1.39999998f, 0.45000005f, 0.00000001f,
+ };
+
+ std::vector<uint32_t> m_teapotIndices =
+ {
+ 0, 1, 11, 11, 1, 12,
+ 1, 2, 12, 12, 2, 13,
+ 2, 3, 13, 13, 3, 14,
+ 3, 4, 14, 14, 4, 15,
+ 4, 5, 15, 15, 5, 16,
+ 5, 6, 16, 16, 6, 17,
+ 6, 7, 17, 17, 7, 18,
+ 7, 8, 18, 18, 8, 19,
+ 8, 9, 19, 19, 9, 20,
+ 9, 10, 20, 20, 10, 21,
+ 11, 12, 22, 22, 12, 23,
+ 12, 13, 23, 23, 13, 24,
+ 13, 14, 24, 24, 14, 25,
+ 14, 15, 25, 25, 15, 26,
+ 15, 16, 26, 26, 16, 27,
+ 16, 17, 27, 27, 17, 28,
+ 17, 18, 28, 28, 18, 29,
+ 18, 19, 29, 29, 19, 30,
+ 19, 20, 30, 30, 20, 31,
+ 20, 21, 31, 31, 21, 32,
+ 22, 23, 33, 33, 23, 34,
+ 23, 24, 34, 34, 24, 35,
+ 24, 25, 35, 35, 25, 36,
+ 25, 26, 36, 36, 26, 37,
+ 26, 27, 37, 37, 27, 38,
+ 27, 28, 38, 38, 28, 39,
+ 28, 29, 39, 39, 29, 40,
+ 29, 30, 40, 40, 30, 41,
+ 30, 31, 41, 41, 31, 42,
+ 31, 32, 42, 42, 32, 43,
+ 33, 34, 44, 44, 34, 45,
+ 34, 35, 45, 45, 35, 46,
+ 35, 36, 46, 46, 36, 47,
+ 36, 37, 47, 47, 37, 48,
+ 37, 38, 48, 48, 38, 49,
+ 38, 39, 49, 49, 39, 50,
+ 39, 40, 50, 50, 40, 51,
+ 40, 41, 51, 51, 41, 52,
+ 41, 42, 52, 52, 42, 53,
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+ 3547, 3548, 3558, 3558, 3548, 3559,
+ 3548, 3549, 3559, 3559, 3549, 3560,
+ 3549, 3550, 3560, 3560, 3550, 3561,
+ 3550, 3551, 3561, 3561, 3551, 3562,
+ 3551, 3552, 3562, 3562, 3552, 3563,
+ 3553, 3554, 3564, 3564, 3554, 3565,
+ 3554, 3555, 3565, 3565, 3555, 3566,
+ 3555, 3556, 3566, 3566, 3556, 3567,
+ 3556, 3557, 3567, 3567, 3557, 3568,
+ 3557, 3558, 3568, 3568, 3558, 3569,
+ 3558, 3559, 3569, 3569, 3559, 3570,
+ 3559, 3560, 3570, 3570, 3560, 3571,
+ 3560, 3561, 3571, 3571, 3561, 3572,
+ 3561, 3562, 3572, 3572, 3562, 3573,
+ 3562, 3563, 3573, 3573, 3563, 3574,
+ 3564, 3565, 3575, 3575, 3565, 3576,
+ 3565, 3566, 3576, 3576, 3566, 3577,
+ 3566, 3567, 3577, 3577, 3567, 3578,
+ 3567, 3568, 3578, 3578, 3568, 3579,
+ 3568, 3569, 3579, 3579, 3569, 3580,
+ 3569, 3570, 3580, 3580, 3570, 3581,
+ 3570, 3571, 3581, 3581, 3571, 3582,
+ 3571, 3572, 3582, 3582, 3572, 3583,
+ 3572, 3573, 3583, 3583, 3573, 3584,
+ 3573, 3574, 3584, 3584, 3574, 3585,
+ 3575, 3576, 3586, 3586, 3576, 3587,
+ 3576, 3577, 3587, 3587, 3577, 3588,
+ 3577, 3578, 3588, 3588, 3578, 3589,
+ 3578, 3579, 3589, 3589, 3579, 3590,
+ 3579, 3580, 3590, 3590, 3580, 3591,
+ 3580, 3581, 3591, 3591, 3581, 3592,
+ 3581, 3582, 3592, 3592, 3582, 3593,
+ 3582, 3583, 3593, 3593, 3583, 3594,
+ 3583, 3584, 3594, 3594, 3584, 3595,
+ 3584, 3585, 3595, 3595, 3585, 3596,
+ 3586, 3587, 3597, 3597, 3587, 3598,
+ 3587, 3588, 3598, 3598, 3588, 3599,
+ 3588, 3589, 3599, 3599, 3589, 3600,
+ 3589, 3590, 3600, 3600, 3590, 3601,
+ 3590, 3591, 3601, 3601, 3591, 3602,
+ 3591, 3592, 3602, 3602, 3592, 3603,
+ 3592, 3593, 3603, 3603, 3593, 3604,
+ 3593, 3594, 3604, 3604, 3594, 3605,
+ 3594, 3595, 3605, 3605, 3595, 3606,
+ 3595, 3596, 3606, 3606, 3596, 3607,
+ 3597, 3598, 3608, 3608, 3598, 3609,
+ 3598, 3599, 3609, 3609, 3599, 3610,
+ 3599, 3600, 3610, 3610, 3600, 3611,
+ 3600, 3601, 3611, 3611, 3601, 3612,
+ 3601, 3602, 3612, 3612, 3602, 3613,
+ 3602, 3603, 3613, 3613, 3603, 3614,
+ 3603, 3604, 3614, 3614, 3604, 3615,
+ 3604, 3605, 3615, 3615, 3605, 3616,
+ 3605, 3606, 3616, 3616, 3606, 3617,
+ 3606, 3607, 3617, 3617, 3607, 3618,
+ 3608, 3609, 3619, 3619, 3609, 3620,
+ 3609, 3610, 3620, 3620, 3610, 3621,
+ 3610, 3611, 3621, 3621, 3611, 3622,
+ 3611, 3612, 3622, 3622, 3612, 3623,
+ 3612, 3613, 3623, 3623, 3613, 3624,
+ 3613, 3614, 3624, 3624, 3614, 3625,
+ 3614, 3615, 3625, 3625, 3615, 3626,
+ 3615, 3616, 3626, 3626, 3616, 3627,
+ 3616, 3617, 3627, 3627, 3617, 3628,
+ 3617, 3618, 3628, 3628, 3618, 3629,
+ 3630, 3631, 3641, 3641, 3631, 3642,
+ 3631, 3632, 3642, 3642, 3632, 3643,
+ 3632, 3633, 3643, 3643, 3633, 3644,
+ 3633, 3634, 3644, 3644, 3634, 3645,
+ 3634, 3635, 3645, 3645, 3635, 3646,
+ 3635, 3636, 3646, 3646, 3636, 3647,
+ 3636, 3637, 3647, 3647, 3637, 3648,
+ 3637, 3638, 3648, 3648, 3638, 3649,
+ 3638, 3639, 3649, 3649, 3639, 3650,
+ 3639, 3640, 3650, 3650, 3640, 3651,
+ 3641, 3642, 3652, 3652, 3642, 3653,
+ 3642, 3643, 3653, 3653, 3643, 3654,
+ 3643, 3644, 3654, 3654, 3644, 3655,
+ 3644, 3645, 3655, 3655, 3645, 3656,
+ 3645, 3646, 3656, 3656, 3646, 3657,
+ 3646, 3647, 3657, 3657, 3647, 3658,
+ 3647, 3648, 3658, 3658, 3648, 3659,
+ 3648, 3649, 3659, 3659, 3649, 3660,
+ 3649, 3650, 3660, 3660, 3650, 3661,
+ 3650, 3651, 3661, 3661, 3651, 3662,
+ 3652, 3653, 3663, 3663, 3653, 3664,
+ 3653, 3654, 3664, 3664, 3654, 3665,
+ 3654, 3655, 3665, 3665, 3655, 3666,
+ 3655, 3656, 3666, 3666, 3656, 3667,
+ 3656, 3657, 3667, 3667, 3657, 3668,
+ 3657, 3658, 3668, 3668, 3658, 3669,
+ 3658, 3659, 3669, 3669, 3659, 3670,
+ 3659, 3660, 3670, 3670, 3660, 3671,
+ 3660, 3661, 3671, 3671, 3661, 3672,
+ 3661, 3662, 3672, 3672, 3662, 3673,
+ 3663, 3664, 3674, 3674, 3664, 3675,
+ 3664, 3665, 3675, 3675, 3665, 3676,
+ 3665, 3666, 3676, 3676, 3666, 3677,
+ 3666, 3667, 3677, 3677, 3667, 3678,
+ 3667, 3668, 3678, 3678, 3668, 3679,
+ 3668, 3669, 3679, 3679, 3669, 3680,
+ 3669, 3670, 3680, 3680, 3670, 3681,
+ 3670, 3671, 3681, 3681, 3671, 3682,
+ 3671, 3672, 3682, 3682, 3672, 3683,
+ 3672, 3673, 3683, 3683, 3673, 3684,
+ 3674, 3675, 3685, 3685, 3675, 3686,
+ 3675, 3676, 3686, 3686, 3676, 3687,
+ 3676, 3677, 3687, 3687, 3677, 3688,
+ 3677, 3678, 3688, 3688, 3678, 3689,
+ 3678, 3679, 3689, 3689, 3679, 3690,
+ 3679, 3680, 3690, 3690, 3680, 3691,
+ 3680, 3681, 3691, 3691, 3681, 3692,
+ 3681, 3682, 3692, 3692, 3682, 3693,
+ 3682, 3683, 3693, 3693, 3683, 3694,
+ 3683, 3684, 3694, 3694, 3684, 3695,
+ 3685, 3686, 3696, 3696, 3686, 3697,
+ 3686, 3687, 3697, 3697, 3687, 3698,
+ 3687, 3688, 3698, 3698, 3688, 3699,
+ 3688, 3689, 3699, 3699, 3689, 3700,
+ 3689, 3690, 3700, 3700, 3690, 3701,
+ 3690, 3691, 3701, 3701, 3691, 3702,
+ 3691, 3692, 3702, 3702, 3692, 3703,
+ 3692, 3693, 3703, 3703, 3693, 3704,
+ 3693, 3694, 3704, 3704, 3694, 3705,
+ 3694, 3695, 3705, 3705, 3695, 3706,
+ 3696, 3697, 3707, 3707, 3697, 3708,
+ 3697, 3698, 3708, 3708, 3698, 3709,
+ 3698, 3699, 3709, 3709, 3699, 3710,
+ 3699, 3700, 3710, 3710, 3700, 3711,
+ 3700, 3701, 3711, 3711, 3701, 3712,
+ 3701, 3702, 3712, 3712, 3702, 3713,
+ 3702, 3703, 3713, 3713, 3703, 3714,
+ 3703, 3704, 3714, 3714, 3704, 3715,
+ 3704, 3705, 3715, 3715, 3705, 3716,
+ 3705, 3706, 3716, 3716, 3706, 3717,
+ 3707, 3708, 3718, 3718, 3708, 3719,
+ 3708, 3709, 3719, 3719, 3709, 3720,
+ 3709, 3710, 3720, 3720, 3710, 3721,
+ 3710, 3711, 3721, 3721, 3711, 3722,
+ 3711, 3712, 3722, 3722, 3712, 3723,
+ 3712, 3713, 3723, 3723, 3713, 3724,
+ 3713, 3714, 3724, 3724, 3714, 3725,
+ 3714, 3715, 3725, 3725, 3715, 3726,
+ 3715, 3716, 3726, 3726, 3716, 3727,
+ 3716, 3717, 3727, 3727, 3717, 3728,
+ 3718, 3719, 3729, 3729, 3719, 3730,
+ 3719, 3720, 3730, 3730, 3720, 3731,
+ 3720, 3721, 3731, 3731, 3721, 3732,
+ 3721, 3722, 3732, 3732, 3722, 3733,
+ 3722, 3723, 3733, 3733, 3723, 3734,
+ 3723, 3724, 3734, 3734, 3724, 3735,
+ 3724, 3725, 3735, 3735, 3725, 3736,
+ 3725, 3726, 3736, 3736, 3726, 3737,
+ 3726, 3727, 3737, 3737, 3727, 3738,
+ 3727, 3728, 3738, 3738, 3728, 3739,
+ 3729, 3730, 3740, 3740, 3730, 3741,
+ 3730, 3731, 3741, 3741, 3731, 3742,
+ 3731, 3732, 3742, 3742, 3732, 3743,
+ 3732, 3733, 3743, 3743, 3733, 3744,
+ 3733, 3734, 3744, 3744, 3734, 3745,
+ 3734, 3735, 3745, 3745, 3735, 3746,
+ 3735, 3736, 3746, 3746, 3736, 3747,
+ 3736, 3737, 3747, 3747, 3737, 3748,
+ 3737, 3738, 3748, 3748, 3738, 3749,
+ 3738, 3739, 3749, 3749, 3739, 3750,
+ 3751, 3752, 3762, 3762, 3752, 3763,
+ 3752, 3753, 3763, 3763, 3753, 3764,
+ 3753, 3754, 3764, 3764, 3754, 3765,
+ 3754, 3755, 3765, 3765, 3755, 3766,
+ 3755, 3756, 3766, 3766, 3756, 3767,
+ 3756, 3757, 3767, 3767, 3757, 3768,
+ 3757, 3758, 3768, 3768, 3758, 3769,
+ 3758, 3759, 3769, 3769, 3759, 3770,
+ 3759, 3760, 3770, 3770, 3760, 3771,
+ 3760, 3761, 3771, 3771, 3761, 3772,
+ 3762, 3763, 3773, 3773, 3763, 3774,
+ 3763, 3764, 3774, 3774, 3764, 3775,
+ 3764, 3765, 3775, 3775, 3765, 3776,
+ 3765, 3766, 3776, 3776, 3766, 3777,
+ 3766, 3767, 3777, 3777, 3767, 3778,
+ 3767, 3768, 3778, 3778, 3768, 3779,
+ 3768, 3769, 3779, 3779, 3769, 3780,
+ 3769, 3770, 3780, 3780, 3770, 3781,
+ 3770, 3771, 3781, 3781, 3771, 3782,
+ 3771, 3772, 3782, 3782, 3772, 3783,
+ 3773, 3774, 3784, 3784, 3774, 3785,
+ 3774, 3775, 3785, 3785, 3775, 3786,
+ 3775, 3776, 3786, 3786, 3776, 3787,
+ 3776, 3777, 3787, 3787, 3777, 3788,
+ 3777, 3778, 3788, 3788, 3778, 3789,
+ 3778, 3779, 3789, 3789, 3779, 3790,
+ 3779, 3780, 3790, 3790, 3780, 3791,
+ 3780, 3781, 3791, 3791, 3781, 3792,
+ 3781, 3782, 3792, 3792, 3782, 3793,
+ 3782, 3783, 3793, 3793, 3783, 3794,
+ 3784, 3785, 3795, 3795, 3785, 3796,
+ 3785, 3786, 3796, 3796, 3786, 3797,
+ 3786, 3787, 3797, 3797, 3787, 3798,
+ 3787, 3788, 3798, 3798, 3788, 3799,
+ 3788, 3789, 3799, 3799, 3789, 3800,
+ 3789, 3790, 3800, 3800, 3790, 3801,
+ 3790, 3791, 3801, 3801, 3791, 3802,
+ 3791, 3792, 3802, 3802, 3792, 3803,
+ 3792, 3793, 3803, 3803, 3793, 3804,
+ 3793, 3794, 3804, 3804, 3794, 3805,
+ 3795, 3796, 3806, 3806, 3796, 3807,
+ 3796, 3797, 3807, 3807, 3797, 3808,
+ 3797, 3798, 3808, 3808, 3798, 3809,
+ 3798, 3799, 3809, 3809, 3799, 3810,
+ 3799, 3800, 3810, 3810, 3800, 3811,
+ 3800, 3801, 3811, 3811, 3801, 3812,
+ 3801, 3802, 3812, 3812, 3802, 3813,
+ 3802, 3803, 3813, 3813, 3803, 3814,
+ 3803, 3804, 3814, 3814, 3804, 3815,
+ 3804, 3805, 3815, 3815, 3805, 3816,
+ 3806, 3807, 3817, 3817, 3807, 3818,
+ 3807, 3808, 3818, 3818, 3808, 3819,
+ 3808, 3809, 3819, 3819, 3809, 3820,
+ 3809, 3810, 3820, 3820, 3810, 3821,
+ 3810, 3811, 3821, 3821, 3811, 3822,
+ 3811, 3812, 3822, 3822, 3812, 3823,
+ 3812, 3813, 3823, 3823, 3813, 3824,
+ 3813, 3814, 3824, 3824, 3814, 3825,
+ 3814, 3815, 3825, 3825, 3815, 3826,
+ 3815, 3816, 3826, 3826, 3816, 3827,
+ 3817, 3818, 3828, 3828, 3818, 3829,
+ 3818, 3819, 3829, 3829, 3819, 3830,
+ 3819, 3820, 3830, 3830, 3820, 3831,
+ 3820, 3821, 3831, 3831, 3821, 3832,
+ 3821, 3822, 3832, 3832, 3822, 3833,
+ 3822, 3823, 3833, 3833, 3823, 3834,
+ 3823, 3824, 3834, 3834, 3824, 3835,
+ 3824, 3825, 3835, 3835, 3825, 3836,
+ 3825, 3826, 3836, 3836, 3826, 3837,
+ 3826, 3827, 3837, 3837, 3827, 3838,
+ 3828, 3829, 3839, 3839, 3829, 3840,
+ 3829, 3830, 3840, 3840, 3830, 3841,
+ 3830, 3831, 3841, 3841, 3831, 3842,
+ 3831, 3832, 3842, 3842, 3832, 3843,
+ 3832, 3833, 3843, 3843, 3833, 3844,
+ 3833, 3834, 3844, 3844, 3834, 3845,
+ 3834, 3835, 3845, 3845, 3835, 3846,
+ 3835, 3836, 3846, 3846, 3836, 3847,
+ 3836, 3837, 3847, 3847, 3837, 3848,
+ 3837, 3838, 3848, 3848, 3838, 3849,
+ 3839, 3840, 3850, 3850, 3840, 3851,
+ 3840, 3841, 3851, 3851, 3841, 3852,
+ 3841, 3842, 3852, 3852, 3842, 3853,
+ 3842, 3843, 3853, 3853, 3843, 3854,
+ 3843, 3844, 3854, 3854, 3844, 3855,
+ 3844, 3845, 3855, 3855, 3845, 3856,
+ 3845, 3846, 3856, 3856, 3846, 3857,
+ 3846, 3847, 3857, 3857, 3847, 3858,
+ 3847, 3848, 3858, 3858, 3848, 3859,
+ 3848, 3849, 3859, 3859, 3849, 3860,
+ 3850, 3851, 3861, 3861, 3851, 3862,
+ 3851, 3852, 3862, 3862, 3852, 3863,
+ 3852, 3853, 3863, 3863, 3853, 3864,
+ 3853, 3854, 3864, 3864, 3854, 3865,
+ 3854, 3855, 3865, 3865, 3855, 3866,
+ 3855, 3856, 3866, 3866, 3856, 3867,
+ 3856, 3857, 3867, 3867, 3857, 3868,
+ 3857, 3858, 3868, 3868, 3858, 3869,
+ 3858, 3859, 3869, 3869, 3859, 3870,
+ 3859, 3860, 3870, 3870, 3860, 3871,
+ };
+
+};
diff --git a/projects/voxelization/src/ShadowMapping.hpp b/projects/voxelization/src/ShadowMapping.hpp
index 7de83b800ce073f5541a889b87a7f0cd763ffa69..3067307b444d4cee18caccaf58a94a13584dc774 100644
--- a/projects/voxelization/src/ShadowMapping.hpp
+++ b/projects/voxelization/src/ShadowMapping.hpp
@@ -3,6 +3,7 @@
#include <vkcv/camera/Camera.hpp>
#include <glm/glm.hpp>
+#define GLM_ENABLE_EXPERIMENTAL // use this before inclusion, else error!
#include <glm/gtx/transform.hpp>
struct LightInfo {
diff --git a/projects/voxelization/src/main.cpp b/projects/voxelization/src/main.cpp
index 0f9e9fb870cb1277f43ea204f351103d1072f8b8..a4ffb668e74d0a0829bb3c436ed5b992695b6ecf 100644
--- a/projects/voxelization/src/main.cpp
+++ b/projects/voxelization/src/main.cpp
@@ -20,8 +20,19 @@ int main(int argc, const char** argv) {
vkcv::Features features;
features.requireExtension(VK_KHR_SWAPCHAIN_EXTENSION_NAME);
- features.requireExtension(VK_KHR_SHADER_FLOAT16_INT8_EXTENSION_NAME);
- features.requireExtension(VK_KHR_16BIT_STORAGE_EXTENSION_NAME);
+ features.tryExtensionFeature<vk::PhysicalDevice16BitStorageFeatures>(
+ VK_KHR_SHADER_FLOAT16_INT8_EXTENSION_NAME,
+ [](vk::PhysicalDevice16BitStorageFeatures& features) {
+ features.setStorageBuffer16BitAccess(true);
+ }
+ );
+
+ features.tryExtensionFeature<vk::PhysicalDeviceShaderFloat16Int8Features>(
+ VK_KHR_16BIT_STORAGE_EXTENSION_NAME,
+ [](vk::PhysicalDeviceShaderFloat16Int8Features& features) {
+ features.setShaderFloat16(true);
+ }
+ );
const uint32_t windowWidth = 1280;
const uint32_t windowHeight = 720;
diff --git a/src/vkcv/BufferManager.cpp b/src/vkcv/BufferManager.cpp
index 84529dbd019e2bee6e6a2eaa142dbd25d064b06c..9bb9e67166013a8d1c2f7eb22a2ea867ddc9da32 100644
--- a/src/vkcv/BufferManager.cpp
+++ b/src/vkcv/BufferManager.cpp
@@ -48,7 +48,7 @@ namespace vkcv {
case BufferType::INDEX:
usageFlags = vk::BufferUsageFlagBits::eIndexBuffer;
break;
- default:
+ default:
vkcv_log(LogLevel::WARNING, "Unknown buffer type");
break;
}
@@ -86,7 +86,7 @@ namespace vkcv {
if (type == BufferType::STAGING) {
memoryUsage = vma::MemoryUsage::eCpuToGpu;
}
-
+
auto bufferAllocation = allocator.createBuffer(
vk::BufferCreateInfo(createFlags, size, usageFlags),
vma::AllocationCreateInfo(
diff --git a/src/vkcv/Context.cpp b/src/vkcv/Context.cpp
index 01f6039eba5646bc99780415b7c41f0a02d65fe6..60ee35629dd54c16f40762861667de5054defc12 100644
--- a/src/vkcv/Context.cpp
+++ b/src/vkcv/Context.cpp
@@ -273,21 +273,6 @@ namespace vkcv
#ifdef __APPLE__
featureManager.useExtension("VK_KHR_portability_subset", true);
#endif
-
- if (featureManager.useExtension(VK_KHR_SHADER_FLOAT16_INT8_EXTENSION_NAME, false)) {
- featureManager.useFeatures<vk::PhysicalDeviceShaderFloat16Int8Features>(
- [](vk::PhysicalDeviceShaderFloat16Int8Features& features) {
- features.setShaderFloat16(true);
- }, false);
- }
-
- if (featureManager.useExtension(VK_KHR_16BIT_STORAGE_EXTENSION_NAME, false)) {
- featureManager.useFeatures<vk::PhysicalDevice16BitStorageFeatures>(
- [](vk::PhysicalDevice16BitStorageFeatures& features) {
- features.setStorageBuffer16BitAccess(true);
- }, false);
- }
-
featureManager.useFeatures([](vk::PhysicalDeviceFeatures& features) {
features.setFragmentStoresAndAtomics(true);
features.setGeometryShader(true);
@@ -340,7 +325,8 @@ namespace vkcv
queuePairsCompute,
queuePairsTransfer
);
-
+
+ vma::AllocatorCreateFlags vmaFlags;
const vma::AllocatorCreateInfo allocatorCreateInfo (
vma::AllocatorCreateFlags(),
physicalDevice,
diff --git a/src/vkcv/Core.cpp b/src/vkcv/Core.cpp
index a07d25836e4b541a023665e12b902b2880027eb4..efba11ec2a95d8b08c9c9ddc646ec471f4f7adce 100644
--- a/src/vkcv/Core.cpp
+++ b/src/vkcv/Core.cpp
@@ -405,6 +405,50 @@ namespace vkcv
recordCommandsToStream(cmdStreamHandle, submitFunction, finishFunction);
}
+
+ void Core::recordRayGenerationToCmdStream(
+ CommandStreamHandle cmdStreamHandle,
+ vk::Pipeline rtxPipeline,
+ vk::PipelineLayout rtxPipelineLayout,
+ vk::StridedDeviceAddressRegionKHR rgenRegion,
+ vk::StridedDeviceAddressRegionKHR rmissRegion,
+ vk::StridedDeviceAddressRegionKHR rchitRegion,
+ vk::StridedDeviceAddressRegionKHR rcallRegion,
+ const std::vector<DescriptorSetUsage>& descriptorSetUsages,
+ const PushConstants& pushConstants,
+ const WindowHandle windowHandle) {
+
+ auto submitFunction = [&](const vk::CommandBuffer& cmdBuffer) {
+ cmdBuffer.bindPipeline(vk::PipelineBindPoint::eRayTracingKHR, rtxPipeline);
+ for (const auto& usage : descriptorSetUsages) {
+ cmdBuffer.bindDescriptorSets(
+ vk::PipelineBindPoint::eRayTracingKHR,
+ rtxPipelineLayout,
+ usage.setLocation,
+ { usage.vulkanHandle },
+ usage.dynamicOffsets
+ );
+ }
+
+ if (pushConstants.getSizePerDrawcall() > 0) {
+ cmdBuffer.pushConstants(
+ rtxPipelineLayout,
+ (vk::ShaderStageFlagBits::eClosestHitKHR | vk::ShaderStageFlagBits::eMissKHR | vk::ShaderStageFlagBits::eRaygenKHR), // TODO: add Support for eAnyHitKHR, eCallableKHR, eIntersectionKHR
+ 0,
+ pushConstants.getSizePerDrawcall(),
+ pushConstants.getData());
+ }
+
+ auto m_rtxDispatcher = vk::DispatchLoaderDynamic((PFN_vkGetInstanceProcAddr)m_Context.getInstance().getProcAddr("vkGetInstanceProcAddr"));
+ m_rtxDispatcher.init(m_Context.getInstance());
+
+ cmdBuffer.traceRaysKHR(&rgenRegion,&rmissRegion,&rchitRegion,&rcallRegion,
+ getWindow(windowHandle).getWidth(), getWindow(windowHandle).getHeight(),1, m_rtxDispatcher);
+
+ };
+ recordCommandsToStream(cmdStreamHandle, submitFunction, nullptr);
+ }
+
void Core::recordComputeDispatchToCmdStream(
CommandStreamHandle cmdStreamHandle,
ComputePipelineHandle computePipeline,
diff --git a/src/vkcv/DescriptorManager.cpp b/src/vkcv/DescriptorManager.cpp
index 8c8238f25fb159b7cc665013e9fc3de9b2fda15a..7480289b1f2a0b1db194db3a06c52f7050888afe 100644
--- a/src/vkcv/DescriptorManager.cpp
+++ b/src/vkcv/DescriptorManager.cpp
@@ -15,7 +15,8 @@ namespace vkcv
vk::DescriptorPoolSize(vk::DescriptorType::eUniformBuffer, 1000),
vk::DescriptorPoolSize(vk::DescriptorType::eStorageBuffer, 1000),
vk::DescriptorPoolSize(vk::DescriptorType::eUniformBufferDynamic, 1000),
- vk::DescriptorPoolSize(vk::DescriptorType::eStorageBufferDynamic, 1000)
+ vk::DescriptorPoolSize(vk::DescriptorType::eStorageBufferDynamic, 1000), // for RTX
+ vk::DescriptorPoolSize(vk::DescriptorType::eAccelerationStructureKHR, 1000) // for RTX
};
m_PoolInfo = vk::DescriptorPoolCreateInfo(
diff --git a/src/vkcv/FeatureManager.cpp b/src/vkcv/FeatureManager.cpp
index cfe8464d3fe3d0eedda2182e8e678e93c13dbf7a..2dd5585d0f3b01c9741e8e52da6a7b45b24d37e5 100644
--- a/src/vkcv/FeatureManager.cpp
+++ b/src/vkcv/FeatureManager.cpp
@@ -156,7 +156,7 @@ m_physicalDevice.getFeatures2(&query)
vkcv_check_init_features2(vk::PhysicalDeviceHostQueryResetFeatures);
vkcv_check_feature(hostQueryReset);
-
+
return true;
}
@@ -258,7 +258,7 @@ m_physicalDevice.getFeatures2(&query)
vkcv_check_init_features2(vk::PhysicalDeviceUniformBufferStandardLayoutFeatures);
vkcv_check_feature(uniformBufferStandardLayout);
-
+
return true;
}
@@ -291,6 +291,103 @@ m_physicalDevice.getFeatures2(&query)
return true;
}
+
+ bool FeatureManager::checkSupport(const vk::PhysicalDeviceVulkan12Features &features, bool required) const {
+ vkcv_check_init_features2(vk::PhysicalDeviceVulkan12Features);
+
+ vkcv_check_feature(samplerMirrorClampToEdge);
+ vkcv_check_feature(drawIndirectCount);
+ vkcv_check_feature(storageBuffer8BitAccess);
+ vkcv_check_feature(uniformAndStorageBuffer8BitAccess);
+ vkcv_check_feature(storagePushConstant8);
+ vkcv_check_feature(shaderBufferInt64Atomics);
+ vkcv_check_feature(shaderSharedInt64Atomics);
+ vkcv_check_feature(shaderFloat16);
+ vkcv_check_feature(shaderInt8);
+ vkcv_check_feature(descriptorIndexing);
+ vkcv_check_feature(shaderInputAttachmentArrayDynamicIndexing);
+ vkcv_check_feature(shaderUniformTexelBufferArrayDynamicIndexing);
+ vkcv_check_feature(shaderStorageTexelBufferArrayDynamicIndexing);
+ vkcv_check_feature(shaderUniformBufferArrayNonUniformIndexing);
+ vkcv_check_feature(shaderSampledImageArrayNonUniformIndexing);
+ vkcv_check_feature(shaderStorageBufferArrayNonUniformIndexing);
+ vkcv_check_feature(shaderStorageImageArrayNonUniformIndexing);
+ vkcv_check_feature(shaderInputAttachmentArrayNonUniformIndexing);
+ vkcv_check_feature(shaderUniformTexelBufferArrayNonUniformIndexing);
+ vkcv_check_feature(shaderStorageTexelBufferArrayNonUniformIndexing);
+ vkcv_check_feature(descriptorBindingUniformBufferUpdateAfterBind);
+ vkcv_check_feature(descriptorBindingSampledImageUpdateAfterBind);
+ vkcv_check_feature(descriptorBindingStorageImageUpdateAfterBind);
+ vkcv_check_feature(descriptorBindingStorageBufferUpdateAfterBind);
+ vkcv_check_feature(descriptorBindingUniformTexelBufferUpdateAfterBind);
+ vkcv_check_feature(descriptorBindingStorageTexelBufferUpdateAfterBind);
+ vkcv_check_feature(descriptorBindingUpdateUnusedWhilePending);
+ vkcv_check_feature(descriptorBindingPartiallyBound);
+ vkcv_check_feature(descriptorBindingVariableDescriptorCount);
+ vkcv_check_feature(runtimeDescriptorArray);
+ vkcv_check_feature(samplerFilterMinmax);
+ vkcv_check_feature(scalarBlockLayout);
+ vkcv_check_feature(imagelessFramebuffer);
+ vkcv_check_feature(uniformBufferStandardLayout);
+ vkcv_check_feature(shaderSubgroupExtendedTypes);
+ vkcv_check_feature(separateDepthStencilLayouts);
+ vkcv_check_feature(hostQueryReset);
+ vkcv_check_feature(timelineSemaphore);
+ vkcv_check_feature(bufferDeviceAddress);
+ vkcv_check_feature(bufferDeviceAddressCaptureReplay);
+ vkcv_check_feature(bufferDeviceAddressMultiDevice);
+ vkcv_check_feature(vulkanMemoryModel);
+ vkcv_check_feature(vulkanMemoryModelDeviceScope);
+ vkcv_check_feature(vulkanMemoryModelAvailabilityVisibilityChains);
+ vkcv_check_feature(shaderOutputViewportIndex);
+ vkcv_check_feature(shaderOutputLayer);
+ vkcv_check_feature(subgroupBroadcastDynamicId);
+
+ return true;
+ }
+
+ bool FeatureManager::checkSupport(const vk::PhysicalDeviceVulkan11Features &features, bool required) const {
+ vkcv_check_init_features2(vk::PhysicalDeviceVulkan11Features);
+
+ vkcv_check_feature(multiview);
+ vkcv_check_feature(multiviewGeometryShader);
+ vkcv_check_feature(multiviewTessellationShader);
+ vkcv_check_feature(protectedMemory);
+ vkcv_check_feature(samplerYcbcrConversion);
+ vkcv_check_feature(shaderDrawParameters);
+ vkcv_check_feature(storageBuffer16BitAccess);
+ vkcv_check_feature(storageInputOutput16);
+ vkcv_check_feature(storagePushConstant16);
+ vkcv_check_feature(uniformAndStorageBuffer16BitAccess);
+ vkcv_check_feature(variablePointers);
+ vkcv_check_feature(variablePointersStorageBuffer);
+
+ return true;
+ }
+
+ bool FeatureManager::checkSupport(const vk::PhysicalDeviceAccelerationStructureFeaturesKHR &features, bool required) const {
+ vkcv_check_init_features2(vk::PhysicalDeviceAccelerationStructureFeaturesKHR);
+
+ vkcv_check_feature(accelerationStructure);
+ vkcv_check_feature(accelerationStructureCaptureReplay);
+ vkcv_check_feature(accelerationStructureIndirectBuild);
+ vkcv_check_feature(accelerationStructureHostCommands);
+ vkcv_check_feature(descriptorBindingAccelerationStructureUpdateAfterBind);
+
+ return true;
+ }
+
+ bool FeatureManager::checkSupport(const vk::PhysicalDeviceRayTracingPipelineFeaturesKHR &features, bool required) const {
+ vkcv_check_init_features2(vk::PhysicalDeviceRayTracingPipelineFeaturesKHR);
+
+ vkcv_check_feature(rayTracingPipeline);
+ vkcv_check_feature(rayTracingPipelineShaderGroupHandleCaptureReplay);
+ vkcv_check_feature(rayTracingPipelineShaderGroupHandleCaptureReplayMixed);
+ vkcv_check_feature(rayTracingPipelineTraceRaysIndirect);
+ vkcv_check_feature(rayTraversalPrimitiveCulling);
+
+ return true;
+ }
vk::BaseOutStructure* FeatureManager::findFeatureStructure(vk::StructureType type) const {
for (auto& base : m_featuresExtensions) {
diff --git a/src/vkcv/ShaderProgram.cpp b/src/vkcv/ShaderProgram.cpp
index a1634c230907ffa741101710613aff73e1fb7b06..4d2165aa22eb5f53dcc3067273721543edd309e4 100644
--- a/src/vkcv/ShaderProgram.cpp
+++ b/src/vkcv/ShaderProgram.cpp
@@ -254,6 +254,29 @@ namespace vkcv {
}
}
+ // Used to reflect acceleration structure bindings for RTX.
+ for (uint32_t i = 0; i < resources.acceleration_structures.size(); i++) {
+ auto& u = resources.acceleration_structures[i];
+ const spirv_cross::SPIRType& base_type = comp.get_type(u.base_type_id);
+
+ uint32_t setID = comp.get_decoration(u.id, spv::DecorationDescriptorSet);
+ uint32_t bindingID = comp.get_decoration(u.id, spv::DecorationBinding);
+ auto binding = DescriptorBinding(
+ bindingID,
+ DescriptorType::ACCELERATION_STRUCTURE_KHR,
+ base_type.vecsize,
+ shaderStage);
+
+ auto insertionResult = m_DescriptorSets[setID].insert(std::make_pair(bindingID, binding));
+ if (!insertionResult.second)
+ {
+ vkcv_log(LogLevel::WARNING,
+ "Attempting to overwrite already existing binding %u at set ID %u.",
+ bindingID,
+ setID);
+ }
+ }
+
//reflect push constants
for (const auto &pushConstantBuffer : resources.push_constant_buffers)
{