public bool DrawFrame(Action <int, int> draw, [CallerMemberName] string frameName = null)
{
int rtvIndex = BeginFrame();
// Refit the top-level acceleration structure
this.acs.CreateTopLevelAS(mpDevice, mpCmdList, this.bottomLevelBuffers, ref mTlasSize, this.mRotation, true, ref topLevelBuffers);
this.mRotation += 0.005f;
// Let's raytrace
context.ResourceBarrier(mpCmdList, mpOutputResource, ResourceStates.CopySource, ResourceStates.UnorderedAccess);
DispatchRaysDescription raytraceDesc = new DispatchRaysDescription();
raytraceDesc.Width = mSwapChainRect.Width;
raytraceDesc.Height = mSwapChainRect.Height;
raytraceDesc.Depth = 1;
// RayGen is the first entry in the shader-table
raytraceDesc.RayGenerationShaderRecord.StartAddress = mpShaderTable.GPUVirtualAddress + 0 * mShaderTableEntrySize;
raytraceDesc.RayGenerationShaderRecord.SizeInBytes = mShaderTableEntrySize;
// Miss is the second entry in the shader-table
uint missOffset = 1 * mShaderTableEntrySize;
raytraceDesc.MissShaderTable.StartAddress = mpShaderTable.GPUVirtualAddress + missOffset;
raytraceDesc.MissShaderTable.StrideInBytes = mShaderTableEntrySize;
raytraceDesc.MissShaderTable.SizeInBytes = mShaderTableEntrySize * 2; // Only a s single miss-entry
// Hit is the third entry in the shader-table
uint hitOffset = 3 * mShaderTableEntrySize;
raytraceDesc.HitGroupTable.StartAddress = mpShaderTable.GPUVirtualAddress + hitOffset;
raytraceDesc.HitGroupTable.StrideInBytes = mShaderTableEntrySize;
raytraceDesc.HitGroupTable.SizeInBytes = mShaderTableEntrySize;
// Bind the empty root signature
mpCmdList.SetComputeRootSignature(mpEmptyRootSig);
// Dispatch
mpCmdList.SetPipelineState1(mpPipelineState);
mpCmdList.DispatchRays(raytraceDesc);
// Copy the results to the back-buffer
context.ResourceBarrier(mpCmdList, mpOutputResource, ResourceStates.UnorderedAccess, ResourceStates.CopySource);
context.ResourceBarrier(mpCmdList, mFrameObjects[rtvIndex].pSwapChainBuffer, ResourceStates.Present, ResourceStates.CopyDestination);
mpCmdList.CopyResource(mFrameObjects[rtvIndex].pSwapChainBuffer, mpOutputResource);
EndFrame(rtvIndex);
return(true);
}
public bool DrawFrame(Action <int, int> draw, [CallerMemberName] string frameName = null)
{
int rtvIndex = BeginFrame();
CreateTopLevelAS(device, commandList, bottomLevelAS, ref tlasSize, true, rotation);
rotation += 0.0005f;
// Let's raytrace
InsertTransitionResourceBarrier(outputResource, ResourceStates.CopySource, ResourceStates.UnorderedAccess);
DispatchRaysDescription raytraceDesc = new DispatchRaysDescription();
raytraceDesc.Width = Window.Width;
raytraceDesc.Height = Window.Height;
raytraceDesc.Depth = 1;
// RayGen is the first entry in the shader-table
raytraceDesc.RayGenerationShaderRecord = new GpuVirtualAddressRange();
raytraceDesc.RayGenerationShaderRecord.StartAddress = shaderTable.GPUVirtualAddress + 0 * shaderTableEntrySize;
raytraceDesc.RayGenerationShaderRecord.SizeInBytes = shaderTableEntrySize;
// Miss is the second entry in the shader-table
uint missOffset = 1 * shaderTableEntrySize;
raytraceDesc.MissShaderTable = new GpuVirtualAddressRangeAndStride();
raytraceDesc.MissShaderTable.StartAddress = shaderTable.GPUVirtualAddress + missOffset;
raytraceDesc.MissShaderTable.StrideInBytes = shaderTableEntrySize;
raytraceDesc.MissShaderTable.SizeInBytes = shaderTableEntrySize * 2; // Only a s single miss-entry
// Hit is the third entry in the shader-table
uint hitOffset = 3 * shaderTableEntrySize;
raytraceDesc.HitGroupTable = new GpuVirtualAddressRangeAndStride();
raytraceDesc.HitGroupTable.StartAddress = shaderTable.GPUVirtualAddress + hitOffset;
raytraceDesc.HitGroupTable.StrideInBytes = shaderTableEntrySize;
raytraceDesc.HitGroupTable.SizeInBytes = shaderTableEntrySize * ((triangleConstantBuffers.Length + 1) * 2);
// Bind the empty root signature
commandList.SetComputeRootSignature(emptyRootSig);
// Dispatch
commandList.SetPipelineState1(pipelineState);
commandList.DispatchRays(raytraceDesc);
// Copy the results to the back-buffer
InsertTransitionResourceBarriers(outputResource,
new ResourceStates[]
{
ResourceStates.UnorderedAccess,
ResourceStates.Present
},
new ResourceStates[]
{
ResourceStates.CopySource,
ResourceStates.CopyDestination
});
commandList.CopyResource(frameObjects[rtvIndex].swapChainBuffer, outputResource);
EndFrame(rtvIndex);
frameCounter++;
if (stopwatch.ElapsedMilliseconds >= 1000)
{
Console.WriteLine("FPS: " + frameCounter);
long primaryRayCount = Window.Width * Window.Height;
long primaryRaysPerSecond = primaryRayCount * frameCounter;
Console.WriteLine((primaryRaysPerSecond / 1000000) + " MRays/second");
frameCounter = 0;
stopwatch.Restart();
}
return(true);
}
