public void DenoiseBufferNoHistory(CommandBuffer cmd, HDCamera hdCamera, RTHandle noisyBuffer, RTHandle outputBuffer, int kernelSize, bool singleChannel = true)
{
// Request the intermediate buffers that we need
RTHandle intermediateBuffer = m_RenderPipeline.GetRayTracingBuffer(InternalRayTracingBuffers.RGBA3);
SimpleDenoiserParameters sdParams = PrepareSimpleDenoiserParameters(hdCamera, singleChannel, kernelSize);
SimpleDenoiserResources sdResources = PrepareSimpleDenoiserResources(noisyBuffer, intermediateBuffer, outputBuffer);
ExecuteSimpleDenoiser(cmd, sdParams, sdResources);
}
SimpleDenoiserParameters PrepareSimpleDenoiserParameters(HDCamera hdCamera, bool singleChannel, int kernelSize)
{
SimpleDenoiserParameters sdParams = new SimpleDenoiserParameters();
// Camera parameters
sdParams.texWidth = hdCamera.actualWidth;
sdParams.texHeight = hdCamera.actualHeight;
sdParams.viewCount = hdCamera.viewCount;
// Evaluation parameters
sdParams.kernelSize = kernelSize;
// Kernels
sdParams.bilateralHKernel = singleChannel ? m_BilateralFilterHSingleKernel : m_BilateralFilterHColorKernel;
sdParams.bilateralVKernel = singleChannel ? m_BilateralFilterVSingleKernel : m_BilateralFilterVColorKernel;
// Other parameters
sdParams.simpleDenoiserCS = m_SimpleDenoiserCS;
return(sdParams);
}
static void ExecuteSimpleDenoiser(CommandBuffer cmd, SimpleDenoiserParameters sdParams, SimpleDenoiserResources sdResources)
{
// Evaluate the dispatch parameters
int sdTileSize = 8;
int numTilesX = (sdParams.texWidth + (sdTileSize - 1)) / sdTileSize;
int numTilesY = (sdParams.texHeight + (sdTileSize - 1)) / sdTileSize;
// Horizontal pass of the bilateral filter
cmd.SetComputeIntParam(sdParams.simpleDenoiserCS, HDShaderIDs._DenoiserFilterRadius, sdParams.kernelSize);
cmd.SetComputeTextureParam(sdParams.simpleDenoiserCS, sdParams.bilateralHKernel, HDShaderIDs._DenoiseInputTexture, sdResources.noisyBuffer);
cmd.SetComputeTextureParam(sdParams.simpleDenoiserCS, sdParams.bilateralHKernel, HDShaderIDs._DepthTexture, sdResources.depthStencilBuffer);
cmd.SetComputeTextureParam(sdParams.simpleDenoiserCS, sdParams.bilateralHKernel, HDShaderIDs._NormalBufferTexture, sdResources.normalBuffer);
cmd.SetComputeTextureParam(sdParams.simpleDenoiserCS, sdParams.bilateralHKernel, HDShaderIDs._DenoiseOutputTextureRW, sdResources.intermediateBuffer);
cmd.DispatchCompute(sdParams.simpleDenoiserCS, sdParams.bilateralHKernel, numTilesX, numTilesY, sdParams.viewCount);
// Horizontal pass of the bilateral filter
cmd.SetComputeIntParam(sdParams.simpleDenoiserCS, HDShaderIDs._DenoiserFilterRadius, sdParams.kernelSize);
cmd.SetComputeTextureParam(sdParams.simpleDenoiserCS, sdParams.bilateralVKernel, HDShaderIDs._DenoiseInputTexture, sdResources.intermediateBuffer);
cmd.SetComputeTextureParam(sdParams.simpleDenoiserCS, sdParams.bilateralVKernel, HDShaderIDs._DepthTexture, sdResources.depthStencilBuffer);
cmd.SetComputeTextureParam(sdParams.simpleDenoiserCS, sdParams.bilateralVKernel, HDShaderIDs._NormalBufferTexture, sdResources.normalBuffer);
cmd.SetComputeTextureParam(sdParams.simpleDenoiserCS, sdParams.bilateralVKernel, HDShaderIDs._DenoiseOutputTextureRW, sdResources.outputBuffer);
cmd.DispatchCompute(sdParams.simpleDenoiserCS, sdParams.bilateralVKernel, numTilesX, numTilesY, sdParams.viewCount);
}