diff --git a/projects/rtx_ambient_occlusion/LICENSE b/projects/rtx_ambient_occlusion/LICENSE
deleted file mode 100644
index bf55b8c6d9548ccb8fce4cce9dd5d81983a2ae70..0000000000000000000000000000000000000000
--- a/projects/rtx_ambient_occlusion/LICENSE
+++ /dev/null
@@ -1,13 +0,0 @@
-Copyright 2021 NVIDIA Corporation
-
- Licensed under the Apache License, Version 2.0 (the "License");
- you may not use the files in this directory except in compliance with the License.
-
- You may obtain a copy of the License at
- http://www.apache.org/licenses/LICENSE-2.0
-
- Unless required by applicable law or agreed to in writing, software
- distributed under the License is distributed on an "AS IS" BASIS,
- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- See the License for the specific language governing permissions and
- limitations under the License.
\ No newline at end of file
diff --git a/projects/rtx_ambient_occlusion/src/RTX/ASManager.cpp b/projects/rtx_ambient_occlusion/src/RTX/ASManager.cpp
index 826910abf0d00d0b95057ac26f6505e749802861..c09e669dc94b05235dbb2f6e5f0b40d274e1c182 100644
--- a/projects/rtx_ambient_occlusion/src/RTX/ASManager.cpp
+++ b/projects/rtx_ambient_occlusion/src/RTX/ASManager.cpp
@@ -56,7 +56,7 @@ namespace vkcv::rtx {
return commandPool;
};
- vk::CommandBuffer ASManager::allocateAndBeginCommandBuffer(vk::CommandPool commandPool)
+ vk::CommandBuffer ASManager::createAndBeginCommandBuffer(vk::CommandPool commandPool)
{
vk::CommandBufferAllocateInfo commandBufferAllocateInfo{};
commandBufferAllocateInfo.setLevel(vk::CommandBufferLevel::ePrimary);
@@ -148,7 +148,7 @@ namespace vkcv::rtx {
submitInfo.queueType = QueueType::Graphics;
vk::CommandPool commandPool= createCommandPool();
- vk::CommandBuffer commandBuffer= allocateAndBeginCommandBuffer(commandPool);
+ vk::CommandBuffer commandBuffer= createAndBeginCommandBuffer(commandPool);
vk::BufferCopy bufferCopy;
bufferCopy.size = cpuBuffer.deviceSize;
commandBuffer.copyBuffer(cpuBuffer.vulkanHandle, gpuBuffer.vulkanHandle, 1, &bufferCopy);
@@ -165,7 +165,7 @@ namespace vkcv::rtx {
vk::DeviceAddress vertexBufferAddress = getBufferDeviceAddress(vertexBuffer.vulkanHandle);
vk::DeviceAddress indexBufferAddress = getBufferDeviceAddress(indexBuffer.vulkanHandle);
- // Specify triangle mesh data
+ // triangle mesh data
vk::AccelerationStructureGeometryTrianglesDataKHR asTriangles(
vk::Format::eR32G32B32Sfloat, // vertex format
vertexBufferAddress, // vertex buffer address (vk::DeviceOrHostAddressConstKHR)
@@ -176,14 +176,14 @@ namespace vkcv::rtx {
{} // transformData (vk::DeviceOrHostAddressConstKHR)
);
- // Encapsulate geometry data
+ // 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
);
- // List ranges of data for access
+ // Ranges for data lists
vk::AccelerationStructureBuildRangeInfoKHR asRangeInfo(
uint32_t(indexCount / 3), // the primitiveCount (uint32_t)
0, // primitiveOffset (uint32_t)
@@ -191,8 +191,7 @@ namespace vkcv::rtx {
0 // transformOffset (uint32_t)
);
- // This struct points to an array of geometries to be built into the
- // BLAS, as well as build settings.
+ // 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
@@ -203,7 +202,7 @@ namespace vkcv::rtx {
&asGeometry // the next input entry would be a pointer to a pointer to geometries. Maybe geometryCount depends on the next entry?
);
- // Query the worst-case amount of memory needed for the AS
+ // Calculate memory needed for AS
vk::AccelerationStructureBuildSizesInfoKHR asBuildSizesInfo;
m_device->getAccelerationStructureBuildSizesKHR(
vk::AccelerationStructureBuildTypeKHR::eDevice, // build on device instead of host
@@ -246,7 +245,7 @@ namespace vkcv::rtx {
}
asBuildInfo.setDstAccelerationStructure(blasKHR);
- // Allocate the scratch buffer holding temporary build data.
+ // Create temporary scratch buffer used for building the AS
RTXBuffer scratchBuffer;
scratchBuffer.bufferType = RTXBufferType::SCRATCH;
scratchBuffer.deviceSize = asBuildSizesInfo.buildScratchSize;
@@ -258,13 +257,11 @@ namespace vkcv::rtx {
asBuildInfo.setScratchData(getBufferDeviceAddress(scratchBuffer.vulkanHandle));
- // Since Vulkan requries an array of pointers to
- // VkAccelerationStructureBuildRangeInfoKHR objects, get a pointer to
- // rangeInfo:
+ // Pointer to rangeInfo, used later for build
vk::AccelerationStructureBuildRangeInfoKHR* pointerToRangeInfo = &asRangeInfo;
vk::CommandPool commandPool = createCommandPool();
- vk::CommandBuffer commandBuffer = allocateAndBeginCommandBuffer(commandPool);
+ vk::CommandBuffer commandBuffer = createAndBeginCommandBuffer(commandPool);
commandBuffer.buildAccelerationStructuresKHR(1, &asBuildInfo, &pointerToRangeInfo, m_rtxDispatcher);
@@ -336,7 +333,7 @@ namespace vkcv::rtx {
barrier.setSrcAccessMask(vk::AccessFlagBits::eTransferWrite);
barrier.setDstAccessMask(vk::AccessFlagBits::eAccelerationStructureWriteKHR);
vk::CommandPool commandPool = createCommandPool();
- vk::CommandBuffer commandBuffer = allocateAndBeginCommandBuffer(commandPool);
+ vk::CommandBuffer commandBuffer = createAndBeginCommandBuffer(commandPool);
commandBuffer.pipelineBarrier(
vk::PipelineStageFlagBits::eTransfer,
vk::PipelineStageFlagBits::eAccelerationStructureBuildKHR,
@@ -359,7 +356,7 @@ namespace vkcv::rtx {
bufferInstancesAddress // vk::DeviceOrHostAddressConstKHR data_ = {}
);
- // Like creating the BLAS, point to the geometry (in this case, the instances) in a polymorphic object.
+ // Geometry, in this case instances of BLAS
vk::AccelerationStructureGeometryKHR asGeometry(
vk::GeometryTypeKHR::eInstances, // vk::GeometryTypeKHR geometryType_ = vk::GeometryTypeKHR::eTriangles
asInstances, // vk::AccelerationStructureGeometryDataKHR geometry_ = {}
@@ -377,7 +374,7 @@ namespace vkcv::rtx {
&asGeometry // the next input entry would be a pointer to a pointer to geometries. Maybe geometryCount depends on the next entry?
);
- // Query the worst-case AS size and scratch space size based on the number of instances (in this case, 1).
+ // AS size and scratch space size, given by count of instances (1)
vk::AccelerationStructureBuildSizesInfoKHR asSizeInfo;
m_core->getContext().getDevice().getAccelerationStructureBuildSizesKHR(
vk::AccelerationStructureBuildTypeKHR::eDevice,
@@ -387,7 +384,7 @@ namespace vkcv::rtx {
m_rtxDispatcher
);
- // Allocate a buffer for the acceleration structure.
+ // Create buffer for the TLAS
RTXBuffer tlasBuffer;
tlasBuffer.bufferType = RTXBufferType::ACCELERATION;
tlasBuffer.deviceSize = asSizeInfo.accelerationStructureSize;
@@ -397,7 +394,7 @@ namespace vkcv::rtx {
createBuffer(tlasBuffer);
- // Create the acceleration structure object. (Data has not yet been set.)
+ // Create empty TLAS object
vk::AccelerationStructureCreateInfoKHR asCreateInfo(
{}, // creation flags
tlasBuffer.vulkanHandle, // allocated AS buffer.
@@ -413,7 +410,7 @@ namespace vkcv::rtx {
}
asBuildInfo.setDstAccelerationStructure(tlas);
- // Allocate the scratch buffer holding temporary build data.
+ // Create temporary scratch buffer used for building the AS
RTXBuffer tlasScratchBuffer; // scratch buffer
tlasScratchBuffer.bufferType = RTXBufferType::ACCELERATION;
tlasScratchBuffer.deviceSize = asSizeInfo.buildScratchSize;
@@ -426,13 +423,13 @@ namespace vkcv::rtx {
vk::DeviceAddress tempBuildBufferDataAddress = m_core->getContext().getDevice().getBufferAddressKHR(tempBuildDataBufferDeviceAddressInfo, m_rtxDispatcher);
asBuildInfo.setScratchData(tempBuildBufferDataAddress);
- // Create a one-element array of pointers to range info objects.
+ // Pointer to rangeInfo, used later for build
vk::AccelerationStructureBuildRangeInfoKHR* pointerToRangeInfo = &asRangeInfo;
// Build the TLAS.
vk::CommandPool commandPool2 = createCommandPool();
- vk::CommandBuffer commandBuffer2 = allocateAndBeginCommandBuffer(commandPool2);
+ vk::CommandBuffer commandBuffer2 = createAndBeginCommandBuffer(commandPool2);
commandBuffer2.buildAccelerationStructuresKHR(1, &asBuildInfo, &pointerToRangeInfo, m_rtxDispatcher);
submitCommandBuffer(commandPool2, commandBuffer2);
diff --git a/projects/rtx_ambient_occlusion/src/RTX/ASManager.hpp b/projects/rtx_ambient_occlusion/src/RTX/ASManager.hpp
index 0cdb14d110982845b8106707ad845baac493094d..42ef7fc03c58a223b510e2a41d710f463dba0c6b 100644
--- a/projects/rtx_ambient_occlusion/src/RTX/ASManager.hpp
+++ b/projects/rtx_ambient_occlusion/src/RTX/ASManager.hpp
@@ -69,10 +69,10 @@ namespace vkcv::rtx {
* @param cmdPool The command pool.
* @return The allocated command buffer.
*/
- vk::CommandBuffer allocateAndBeginCommandBuffer( vk::CommandPool cmdPool);
+ vk::CommandBuffer createAndBeginCommandBuffer( vk::CommandPool cmdPool);
/**
- * @brief Ends recording, submits, waits, and then frees the @p commandBuffer.
+ * @brief Ends the @p commandBuffer,submits it and waits. Afterwards frees the @p commandBuffer.
* @param commandPool The command pool.
* @param commandBuffer The command buffer.
*/
diff --git a/projects/rtx_ambient_occlusion/src/main.cpp b/projects/rtx_ambient_occlusion/src/main.cpp
index dcabe95a2977afe4cdc6fb24cc8499c4b459785c..bac1fe367031e43cf2fc53d4be23c208f4fb682d 100644
--- a/projects/rtx_ambient_occlusion/src/main.cpp
+++ b/projects/rtx_ambient_occlusion/src/main.cpp
@@ -8,8 +8,8 @@
/**
* Note: This project is based on the following tutorial https://github.com/Apress/Ray-Tracing-Gems-II/tree/main/Chapter_16.
- * Some code was taken from the tutorial, some code was adjusted to our framework. This includes the shader files as well.
*/
+
int main(int argc, const char** argv) {
const char* applicationName = "RTX Ambient Occlusion";