public void DenoiseBuffer(CommandBuffer cmd, HDCamera hdCamera,
RTHandle noisySignal,
RTHandle outputSignal,
float kernelSize,
bool singleChannel = true,
bool halfResolutionFilter = false)
{
// Fetch texture dimensions
int texWidth = hdCamera.actualWidth;
int texHeight = hdCamera.actualHeight;
// Evaluate the dispatch parameters
int areaTileSize = 8;
int numTilesX = (texWidth + (areaTileSize - 1)) / areaTileSize;
int numTilesY = (texHeight + (areaTileSize - 1)) / areaTileSize;
int m_KernelFilter = m_SimpleDenoiserCS.FindKernel(singleChannel ? "BilateralFilterSingle" : "BilateralFilterColor");
cmd.SetGlobalTexture(HDShaderIDs._OwenScrambledRGTexture, m_OwenScrambleRGBA);
cmd.SetComputeFloatParam(m_SimpleDenoiserCS, HDShaderIDs._DenoiserFilterRadius, kernelSize);
cmd.SetComputeTextureParam(m_SimpleDenoiserCS, m_KernelFilter, HDShaderIDs._DenoiseInputTexture, noisySignal);
cmd.SetComputeTextureParam(m_SimpleDenoiserCS, m_KernelFilter, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetComputeTextureParam(m_SimpleDenoiserCS, m_KernelFilter, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer());
cmd.SetComputeTextureParam(m_SimpleDenoiserCS, m_KernelFilter, HDShaderIDs._DenoiseOutputTextureRW, halfResolutionFilter ? m_IntermediateBuffer0 : outputSignal);
cmd.SetComputeIntParam(m_SimpleDenoiserCS, HDShaderIDs._HalfResolutionFilter, halfResolutionFilter ? 1 : 0);
cmd.SetComputeFloatParam(m_SimpleDenoiserCS, HDShaderIDs._PixelSpreadAngleTangent, HDRenderPipeline.GetPixelSpreadTangent(hdCamera.camera.fieldOfView, hdCamera.actualWidth, hdCamera.actualHeight));
cmd.DispatchCompute(m_SimpleDenoiserCS, m_KernelFilter, numTilesX, numTilesY, hdCamera.viewCount);
if (halfResolutionFilter)
{
m_KernelFilter = m_SimpleDenoiserCS.FindKernel(singleChannel ? "GatherSingle" : "GatherColor");
cmd.SetComputeTextureParam(m_SimpleDenoiserCS, m_KernelFilter, HDShaderIDs._DenoiseInputTexture, m_IntermediateBuffer0);
cmd.SetComputeTextureParam(m_SimpleDenoiserCS, m_KernelFilter, HDShaderIDs._DenoiseOutputTextureRW, outputSignal);
cmd.DispatchCompute(m_SimpleDenoiserCS, m_KernelFilter, numTilesX, numTilesY, hdCamera.viewCount);
}
}
// Denoiser variant when history is stored in an array and the validation buffer is seperate
public void DenoiseBuffer(CommandBuffer cmd, HDCamera hdCamera,
RTHandle noisySignal, RTHandle historySignal,
RTHandle validationHistory,
RTHandle velocityBuffer,
RTHandle outputSignal,
int sliceIndex, Vector4 channelMask,
RTHandle distanceSignal, RTHandle distanceHistorySignal, RTHandle outputDistanceSignal, Vector4 distanceChannelMask,
bool singleChannel = true, float historyValidity = 1.0f)
{
// If we do not have a depth and normal history buffers, we can skip right away
var historyDepthBuffer = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.Depth);
var historyNormalBuffer = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.Normal);
if (historyDepthBuffer == null || historyNormalBuffer == null)
{
HDUtils.BlitCameraTexture(cmd, noisySignal, historySignal);
HDUtils.BlitCameraTexture(cmd, noisySignal, outputSignal);
if (distanceSignal != null && distanceHistorySignal != null && outputDistanceSignal != null)
{
HDUtils.BlitCameraTexture(cmd, distanceSignal, distanceHistorySignal);
HDUtils.BlitCameraTexture(cmd, distanceSignal, outputDistanceSignal);
}
return;
}
// Fetch texture dimensions
int texWidth = hdCamera.actualWidth;
int texHeight = hdCamera.actualHeight;
// Evaluate the dispatch parameters
int areaTileSize = 8;
int numTilesX = (texWidth + (areaTileSize - 1)) / areaTileSize;
int numTilesY = (texHeight + (areaTileSize - 1)) / areaTileSize;
// Request the intermediate buffer we need
RTHandle validationBuffer = m_RenderPipeline.GetRayTracingBuffer(InternalRayTracingBuffers.R0);
// First of all we need to validate the history to know where we can or cannot use the history signal
int m_KernelFilter = m_TemporalFilterCS.FindKernel("ValidateHistory");
var historyScale = new Vector2(hdCamera.actualWidth / (float)historySignal.rt.width, hdCamera.actualHeight / (float)historySignal.rt.height);
cmd.SetComputeVectorParam(m_TemporalFilterCS, HDShaderIDs._RTHandleScaleHistory, historyScale);
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._HistoryDepthTexture, historyDepthBuffer);
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer());
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._HistoryNormalBufferTexture, historyNormalBuffer);
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._ValidationBufferRW, validationBuffer);
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._VelocityBuffer, velocityBuffer);
cmd.SetComputeFloatParam(m_TemporalFilterCS, HDShaderIDs._HistoryValidity, historyValidity);
cmd.SetComputeFloatParam(m_TemporalFilterCS, HDShaderIDs._PixelSpreadAngleTangent, HDRenderPipeline.GetPixelSpreadTangent(hdCamera.camera.fieldOfView, hdCamera.actualWidth, hdCamera.actualHeight));
cmd.DispatchCompute(m_TemporalFilterCS, m_KernelFilter, numTilesX, numTilesY, hdCamera.viewCount);
// Now that we have validated our history, let's accumulate
m_KernelFilter = m_TemporalFilterCS.FindKernel(singleChannel ? "TemporalAccumulationSingleArray" : "TemporalAccumulationColorArray");
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._DenoiseInputTexture, noisySignal);
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._HistoryBuffer, historySignal);
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._HistoryValidityBuffer, validationHistory);
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._DenoiseOutputTextureRW, outputSignal);
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._ValidationBuffer, validationBuffer);
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._VelocityBuffer, velocityBuffer);
cmd.SetComputeIntParam(m_TemporalFilterCS, HDShaderIDs._DenoisingHistorySlice, sliceIndex);
cmd.SetComputeVectorParam(m_TemporalFilterCS, HDShaderIDs._DenoisingHistoryMask, channelMask);
cmd.DispatchCompute(m_TemporalFilterCS, m_KernelFilter, numTilesX, numTilesY, hdCamera.viewCount);
// Make sure to copy the new-accumulated signal in our history buffer
m_KernelFilter = m_TemporalFilterCS.FindKernel(singleChannel ? "CopyHistorySingleArray" : "CopyHistoryColorArray");
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._DenoiseInputTexture, outputSignal);
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._DenoiseOutputTextureRW, historySignal);
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._ValidityOutputTextureRW, validationHistory);
cmd.SetComputeIntParam(m_TemporalFilterCS, HDShaderIDs._DenoisingHistorySlice, sliceIndex);
cmd.SetComputeVectorParam(m_TemporalFilterCS, HDShaderIDs._DenoisingHistoryMask, channelMask);
cmd.DispatchCompute(m_TemporalFilterCS, m_KernelFilter, numTilesX, numTilesY, hdCamera.viewCount);
if (distanceSignal != null && distanceHistorySignal != null && outputDistanceSignal != null)
{
// Now that we have validated our history, let's accumulate
m_KernelFilter = m_TemporalFilterCS.FindKernel("TemporalAccumulationSingleArray");
// Bind the intput buffers
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._DenoiseInputTexture, distanceSignal);
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._HistoryBuffer, distanceHistorySignal);
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._HistoryValidityBuffer, validationHistory);
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._ValidationBuffer, validationBuffer);
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._VelocityBuffer, velocityBuffer);
// Bind the constant inputs
cmd.SetComputeIntParam(m_TemporalFilterCS, HDShaderIDs._DenoisingHistorySlice, sliceIndex);
cmd.SetComputeVectorParam(m_TemporalFilterCS, HDShaderIDs._DenoisingHistoryMask, distanceChannelMask);
// Bind the output buffers
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._DenoiseOutputTextureRW, outputDistanceSignal);
// Dispatch the temporal accumulation
cmd.DispatchCompute(m_TemporalFilterCS, m_KernelFilter, numTilesX, numTilesY, hdCamera.viewCount);
// Make sure to copy the new-accumulated signal in our history buffer
m_KernelFilter = m_TemporalFilterCS.FindKernel("CopyHistorySingleArrayNoValidity");
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._DenoiseInputTexture, outputDistanceSignal);
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._DenoiseOutputTextureRW, distanceHistorySignal);
cmd.SetComputeIntParam(m_TemporalFilterCS, HDShaderIDs._DenoisingHistorySlice, sliceIndex);
cmd.SetComputeVectorParam(m_TemporalFilterCS, HDShaderIDs._DenoisingHistoryMask, distanceChannelMask);
cmd.DispatchCompute(m_TemporalFilterCS, m_KernelFilter, numTilesX, numTilesY, hdCamera.viewCount);
}
}
public void DenoiseBuffer(CommandBuffer cmd, HDCamera hdCamera,
RTHandle noisySignal, RTHandle historySignal,
RTHandle outputSignal,
bool singleChannel = true, int slotIndex = -1, float historyValidity = 1.0f)
{
// If we do not have a depth and normal history buffers, we can skip right away
var historyDepthBuffer = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.Depth);
var historyNormalBuffer = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.Normal);
if (historyDepthBuffer == null || historyNormalBuffer == null)
{
HDUtils.BlitCameraTexture(cmd, noisySignal, historySignal);
HDUtils.BlitCameraTexture(cmd, noisySignal, outputSignal);
return;
}
// Fetch texture dimensions
int texWidth = hdCamera.actualWidth;
int texHeight = hdCamera.actualHeight;
// Evaluate the dispatch parameters
int areaTileSize = 8;
int numTilesX = (texWidth + (areaTileSize - 1)) / areaTileSize;
int numTilesY = (texHeight + (areaTileSize - 1)) / areaTileSize;
// First of all we need to validate the history to know where we can or cannot use the history signal
int m_KernelFilter = m_TemporalFilterCS.FindKernel("ValidateHistory");
var historyScale = new Vector2(hdCamera.actualWidth / (float)historySignal.rt.width, hdCamera.actualHeight / (float)historySignal.rt.height);
cmd.SetComputeVectorParam(m_TemporalFilterCS, HDShaderIDs._RTHandleScaleHistory, historyScale);
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._HistoryDepthTexture, historyDepthBuffer);
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer());
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._HistoryNormalBufferTexture, historyNormalBuffer);
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._ValidationBufferRW, m_ValidationBuffer);
cmd.SetComputeFloatParam(m_TemporalFilterCS, HDShaderIDs._HistoryValidity, historyValidity);
cmd.SetComputeFloatParam(m_TemporalFilterCS, HDShaderIDs._PixelSpreadAngleTangent, HDRenderPipeline.GetPixelSpreadTangent(hdCamera.camera.fieldOfView, hdCamera.actualWidth, hdCamera.actualHeight));
cmd.DispatchCompute(m_TemporalFilterCS, m_KernelFilter, numTilesX, numTilesY, hdCamera.viewCount);
// Now that we have validated our history, let's accumulate
m_KernelFilter = m_TemporalFilterCS.FindKernel(singleChannel ? (slotIndex == -1 ? "TemporalAccumulationSingle" : "TemporalAccumulationSingleArray") : "TemporalAccumulationColor");
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._DenoiseInputTexture, noisySignal);
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._HistoryBuffer, historySignal);
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._DenoiseOutputTextureRW, outputSignal);
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._ValidationBuffer, m_ValidationBuffer);
cmd.SetComputeIntParam(m_TemporalFilterCS, HDShaderIDs._DenoisingHistorySlot, slotIndex);
cmd.DispatchCompute(m_TemporalFilterCS, m_KernelFilter, numTilesX, numTilesY, hdCamera.viewCount);
m_KernelFilter = m_TemporalFilterCS.FindKernel(singleChannel ? (slotIndex == -1 ? "CopyHistorySingle" : "CopyHistorySingleArray") : "CopyHistoryColor");
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._DenoiseInputTexture, outputSignal);
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._DenoiseOutputTextureRW, historySignal);
cmd.SetComputeIntParam(m_TemporalFilterCS, HDShaderIDs._DenoisingHistorySlot, slotIndex);
cmd.DispatchCompute(m_TemporalFilterCS, m_KernelFilter, numTilesX, numTilesY, hdCamera.viewCount);
}
