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);
}
public TextureHandle DenoiseBufferNoHistory(RenderGraph renderGraph, HDCamera hdCamera,
TextureHandle depthBuffer, TextureHandle normalBuffer,
TextureHandle noisyBuffer,
int kernelSize, bool singleChannel)
{
using (var builder = renderGraph.AddRenderPass <SimpleDenoiserPassData>("DiffuseDenoiser", out var passData, ProfilingSampler.Get(HDProfileId.DiffuseFilter)))
{
// Cannot run in async
builder.EnableAsyncCompute(false);
// Fetch all the resources
passData.parameters = PrepareSimpleDenoiserParameters(hdCamera, singleChannel, kernelSize);
// Input buffers
passData.depthStencilBuffer = builder.UseDepthBuffer(depthBuffer, DepthAccess.Read);
passData.normalBuffer = builder.ReadTexture(normalBuffer);
passData.noisyBuffer = builder.ReadTexture(noisyBuffer);
// Temporary buffers
passData.intermediateBuffer = builder.CreateTransientTexture(new TextureDesc(Vector2.one, true, true)
{
colorFormat = GraphicsFormat.R16G16B16A16_SFloat, enableRandomWrite = true, name = "Intermediate buffer"
});
// Output buffer
passData.outputBuffer = builder.ReadWriteTexture(renderGraph.CreateTexture(new TextureDesc(Vector2.one, true, true)
{
colorFormat = GraphicsFormat.R16G16B16A16_SFloat, enableRandomWrite = true, name = "Denoised Buffer"
}));
builder.SetRenderFunc(
(SimpleDenoiserPassData data, RenderGraphContext ctx) =>
{
SimpleDenoiserResources resources = new SimpleDenoiserResources();
resources.depthStencilBuffer = data.depthStencilBuffer;
resources.normalBuffer = data.normalBuffer;
resources.noisyBuffer = data.noisyBuffer;
resources.intermediateBuffer = data.intermediateBuffer;
resources.outputBuffer = data.outputBuffer;
ExecuteSimpleDenoiser(ctx.cmd, data.parameters, resources);
});
return(passData.outputBuffer);
}
}
SimpleDenoiserResources PrepareSimpleDenoiserResources(RTHandle noisyBuffer, RTHandle intermediateBuffer, RTHandle outputBuffer)
{
SimpleDenoiserResources sdResources = new SimpleDenoiserResources();
// Input buffers
sdResources.noisyBuffer = noisyBuffer;
sdResources.depthStencilBuffer = m_SharedRTManager.GetDepthStencilBuffer();
sdResources.normalBuffer = m_SharedRTManager.GetNormalBuffer();
// Temporary buffers
sdResources.intermediateBuffer = intermediateBuffer;
// Output buffers
sdResources.outputBuffer = outputBuffer;
return(sdResources);
}
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);
}
