// Denoiser variant for non history array
static public void DenoiseBuffer(CommandBuffer cmd, TemporalFilterParameters tfParameters, TemporalFilterResources tfResources)
{
// Evaluate the dispatch parameters
int areaTileSize = 8;
int numTilesX = (tfParameters.texWidth + (areaTileSize - 1)) / areaTileSize;
int numTilesY = (tfParameters.texHeight + (areaTileSize - 1)) / areaTileSize;
// Now that we have validated our history, let's accumulate
// Bind the input buffers
cmd.SetComputeTextureParam(tfParameters.temporalFilterCS, tfParameters.temporalAccKernel, HDShaderIDs._DenoiseInputTexture, tfResources.noisyBuffer);
cmd.SetComputeTextureParam(tfParameters.temporalFilterCS, tfParameters.temporalAccKernel, HDShaderIDs._HistoryBuffer, tfResources.historyBuffer);
cmd.SetComputeTextureParam(tfParameters.temporalFilterCS, tfParameters.temporalAccKernel, HDShaderIDs._DepthTexture, tfResources.depthStencilBuffer);
cmd.SetComputeTextureParam(tfParameters.temporalFilterCS, tfParameters.temporalAccKernel, HDShaderIDs._ValidationBuffer, tfResources.validationBuffer);
cmd.SetComputeTextureParam(tfParameters.temporalFilterCS, tfParameters.temporalAccKernel, HDShaderIDs._VelocityBuffer, tfResources.velocityBuffer);
cmd.SetComputeTextureParam(tfParameters.temporalFilterCS, tfParameters.temporalAccKernel, HDShaderIDs._CameraMotionVectorsTexture, tfResources.motionVectorBuffer);
cmd.SetComputeFloatParam(tfParameters.temporalFilterCS, HDShaderIDs._HistoryValidity, tfParameters.historyValidity);
// Bind the output buffer
cmd.SetComputeTextureParam(tfParameters.temporalFilterCS, tfParameters.temporalAccKernel, HDShaderIDs._DenoiseOutputTextureRW, tfResources.outputBuffer);
// Combine signal with history
cmd.DispatchCompute(tfParameters.temporalFilterCS, tfParameters.temporalAccKernel, numTilesX, numTilesY, tfParameters.viewCount);
// Make sure to copy the new-accumulated signal in our history buffer
cmd.SetComputeTextureParam(tfParameters.temporalFilterCS, tfParameters.copyHistoryKernel, HDShaderIDs._DenoiseInputTexture, tfResources.outputBuffer);
cmd.SetComputeTextureParam(tfParameters.temporalFilterCS, tfParameters.copyHistoryKernel, HDShaderIDs._DenoiseOutputTextureRW, tfResources.historyBuffer);
cmd.DispatchCompute(tfParameters.temporalFilterCS, tfParameters.copyHistoryKernel, numTilesX, numTilesY, tfParameters.viewCount);
}
public void DenoiseAO(CommandBuffer cmd, HDCamera hdCamera, RTHandle outputTexture)
{
var aoSettings = hdCamera.volumeStack.GetComponent <AmbientOcclusion>();
if (aoSettings.denoise)
{
// Evaluate the history's validity
float historyValidity = historyValidity = HDRenderPipeline.ValidRayTracingHistory(hdCamera) ? 1.0f : 0.0f;
// Grab the history buffer
RTHandle aoHistory = RequestAmbientOcclusionHistoryTexture(hdCamera);
// Prepare and execute the temporal filter
HDTemporalFilter temporalFilter = m_RenderPipeline.GetTemporalFilter();
TemporalFilterParameters tfParameters = temporalFilter.PrepareTemporalFilterParameters(hdCamera, true, historyValidity);
RTHandle validationBuffer = m_RenderPipeline.GetRayTracingBuffer(InternalRayTracingBuffers.R0);
TemporalFilterResources tfResources = temporalFilter.PrepareTemporalFilterResources(hdCamera, validationBuffer, m_AOIntermediateBuffer0, aoHistory, m_AOIntermediateBuffer1);
HDTemporalFilter.DenoiseBuffer(cmd, tfParameters, tfResources);
// Apply the diffuse denoiser
HDDiffuseDenoiser diffuseDenoiser = m_RenderPipeline.GetDiffuseDenoiser();
DiffuseDenoiserParameters ddParams = diffuseDenoiser.PrepareDiffuseDenoiserParameters(hdCamera, true, aoSettings.denoiserRadius, false, false);
RTHandle intermediateBuffer = m_RenderPipeline.GetRayTracingBuffer(InternalRayTracingBuffers.RGBA0);
DiffuseDenoiserResources ddResources = diffuseDenoiser.PrepareDiffuseDenoiserResources(m_AOIntermediateBuffer1, intermediateBuffer, outputTexture);
HDDiffuseDenoiser.DenoiseBuffer(cmd, ddParams, ddResources);
}
else
{
HDUtils.BlitCameraTexture(cmd, m_AOIntermediateBuffer0, outputTexture);
}
}
// Denoiser variant for non history array
static public void DenoiseBuffer(CommandBuffer cmd, TemporalFilterParameters tfParameters, TemporalFilterResources tfResources)
{
// If we do not have a depth and normal history buffers, we can skip right away
if (tfResources.historyDepthTexture == null || tfResources.historyNormalTexture == null)
{
HDUtils.BlitCameraTexture(cmd, tfResources.noisyBuffer, tfResources.historyBuffer);
HDUtils.BlitCameraTexture(cmd, tfResources.noisyBuffer, tfResources.outputBuffer);
return;
}
// Evaluate the dispatch parameters
int areaTileSize = 8;
int numTilesX = (tfParameters.texWidth + (areaTileSize - 1)) / areaTileSize;
int numTilesY = (tfParameters.texHeight + (areaTileSize - 1)) / areaTileSize;
// First of all we need to validate the history to know where we can or cannot use the history signal
// Bind the input buffers
cmd.SetComputeTextureParam(tfParameters.temporalFilterCS, tfParameters.validateHistoryKernel, HDShaderIDs._DepthTexture, tfResources.depthStencilBuffer);
cmd.SetComputeTextureParam(tfParameters.temporalFilterCS, tfParameters.validateHistoryKernel, HDShaderIDs._HistoryDepthTexture, tfResources.historyDepthTexture);
cmd.SetComputeTextureParam(tfParameters.temporalFilterCS, tfParameters.validateHistoryKernel, HDShaderIDs._NormalBufferTexture, tfResources.normalBuffer);
cmd.SetComputeTextureParam(tfParameters.temporalFilterCS, tfParameters.validateHistoryKernel, HDShaderIDs._HistoryNormalTexture, tfResources.historyNormalTexture);
cmd.SetComputeTextureParam(tfParameters.temporalFilterCS, tfParameters.validateHistoryKernel, HDShaderIDs._VelocityBuffer, tfResources.velocityBuffer);
cmd.SetComputeTextureParam(tfParameters.temporalFilterCS, tfParameters.validateHistoryKernel, HDShaderIDs._CameraMotionVectorsTexture, tfResources.motionVectorBuffer);
// Bind the constants
cmd.SetComputeFloatParam(tfParameters.temporalFilterCS, HDShaderIDs._HistoryValidity, tfParameters.historyValidity);
cmd.SetComputeFloatParam(tfParameters.temporalFilterCS, HDShaderIDs._PixelSpreadAngleTangent, tfParameters.pixelSpreadTangent);
// Bind the output buffer
cmd.SetComputeTextureParam(tfParameters.temporalFilterCS, tfParameters.validateHistoryKernel, HDShaderIDs._ValidationBufferRW, tfResources.validationBuffer);
// Evaluate the validity
cmd.DispatchCompute(tfParameters.temporalFilterCS, tfParameters.validateHistoryKernel, numTilesX, numTilesY, tfParameters.viewCount);
// Now that we have validated our history, let's accumulate
// Bind the input buffers
cmd.SetComputeTextureParam(tfParameters.temporalFilterCS, tfParameters.temporalAccKernel, HDShaderIDs._DenoiseInputTexture, tfResources.noisyBuffer);
cmd.SetComputeTextureParam(tfParameters.temporalFilterCS, tfParameters.temporalAccKernel, HDShaderIDs._HistoryBuffer, tfResources.historyBuffer);
cmd.SetComputeTextureParam(tfParameters.temporalFilterCS, tfParameters.temporalAccKernel, HDShaderIDs._DepthTexture, tfResources.depthStencilBuffer);
cmd.SetComputeTextureParam(tfParameters.temporalFilterCS, tfParameters.temporalAccKernel, HDShaderIDs._ValidationBuffer, tfResources.validationBuffer);
cmd.SetComputeTextureParam(tfParameters.temporalFilterCS, tfParameters.temporalAccKernel, HDShaderIDs._VelocityBuffer, tfResources.velocityBuffer);
cmd.SetComputeTextureParam(tfParameters.temporalFilterCS, tfParameters.temporalAccKernel, HDShaderIDs._CameraMotionVectorsTexture, tfResources.motionVectorBuffer);
// Bind the output buffer
cmd.SetComputeTextureParam(tfParameters.temporalFilterCS, tfParameters.temporalAccKernel, HDShaderIDs._DenoiseOutputTextureRW, tfResources.outputBuffer);
// Combine signal with history
cmd.DispatchCompute(tfParameters.temporalFilterCS, tfParameters.temporalAccKernel, numTilesX, numTilesY, tfParameters.viewCount);
// Make sure to copy the new-accumulated signal in our history buffer
cmd.SetComputeTextureParam(tfParameters.temporalFilterCS, tfParameters.copyHistoryKernel, HDShaderIDs._DenoiseInputTexture, tfResources.outputBuffer);
cmd.SetComputeTextureParam(tfParameters.temporalFilterCS, tfParameters.copyHistoryKernel, HDShaderIDs._DenoiseOutputTextureRW, tfResources.historyBuffer);
cmd.DispatchCompute(tfParameters.temporalFilterCS, tfParameters.copyHistoryKernel, numTilesX, numTilesY, tfParameters.viewCount);
}
TextureHandle DenoiseRTSSS(RenderGraph renderGraph, HDCamera hdCamera, TextureHandle rayTracedSSS, TextureHandle depthPyramid, TextureHandle normalBuffer, TextureHandle motionVectorBuffer)
{
// Evaluate the history's validity
float historyValidity = HDRenderPipeline.EvaluateHistoryValidity(hdCamera);
// Run the temporal denoiser
HDTemporalFilter temporalFilter = GetTemporalFilter();
TemporalFilterParameters tfParameters = temporalFilter.PrepareTemporalFilterParameters(hdCamera, false, historyValidity);
TextureHandle historyBuffer = renderGraph.ImportTexture(RequestRayTracedSSSHistoryTexture(hdCamera));
return(temporalFilter.Denoise(renderGraph, hdCamera, tfParameters, rayTracedSSS, historyBuffer, depthPyramid, normalBuffer, motionVectorBuffer));
}
public TextureHandle Denoise(RenderGraph renderGraph, HDCamera hdCamera, TemporalFilterParameters tfParameters, TextureHandle noisyBuffer, TextureHandle historyBuffer, TextureHandle depthPyramid, TextureHandle normalBuffer, TextureHandle motionVectorBuffer)
{
using (var builder = renderGraph.AddRenderPass <TemporalFilterPassData>("TemporalDenoiser", out var passData, ProfilingSampler.Get(HDProfileId.TemporalFilter)))
{
// Cannot run in async
builder.EnableAsyncCompute(false);
// Fetch all the resources
passData.parameters = tfParameters;
// Input Buffers
passData.depthStencilBuffer = builder.ReadTexture(depthPyramid);
passData.normalBuffer = builder.ReadTexture(normalBuffer);
passData.motionVectorBuffer = builder.ReadTexture(motionVectorBuffer);
passData.velocityBuffer = renderGraph.defaultResources.blackTextureXR;
passData.noisyBuffer = builder.ReadTexture(noisyBuffer);
// Temporary buffers
passData.validationBuffer = builder.CreateTransientTexture(new TextureDesc(Vector2.one, true, true)
{
colorFormat = GraphicsFormat.R8_UNorm, enableRandomWrite = true, name = "ValidationTexture"
});
// History buffers
passData.historyDepthTexture = builder.ReadTexture(renderGraph.ImportTexture(hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.Depth)));
passData.historyNormalTexture = builder.ReadTexture(renderGraph.ImportTexture(hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.Normal)));
passData.historyBuffer = builder.ReadTexture(builder.WriteTexture(historyBuffer));
// Output buffers
passData.outputBuffer = builder.ReadTexture(builder.WriteTexture(renderGraph.CreateTexture(new TextureDesc(Vector2.one, true, true)
{
colorFormat = GraphicsFormat.R16G16B16A16_SFloat, enableRandomWrite = true, name = "Temporal Filter Output"
})));
builder.SetRenderFunc(
(TemporalFilterPassData data, RenderGraphContext ctx) =>
{
TemporalFilterResources tfResources = new TemporalFilterResources();
tfResources.depthStencilBuffer = data.depthStencilBuffer;
tfResources.normalBuffer = data.normalBuffer;
tfResources.velocityBuffer = data.velocityBuffer;
tfResources.motionVectorBuffer = data.motionVectorBuffer;
tfResources.historyDepthTexture = data.historyDepthTexture;
tfResources.historyNormalTexture = data.historyNormalTexture;
tfResources.noisyBuffer = data.noisyBuffer;
tfResources.validationBuffer = data.validationBuffer;
tfResources.historyBuffer = data.historyBuffer;
tfResources.outputBuffer = data.outputBuffer;
DenoiseBuffer(ctx.cmd, data.parameters, tfResources);
});
return(passData.outputBuffer);
}
}
void DenoiseIndirectDiffuseBuffer(HDCamera hdCamera, CommandBuffer cmd, GlobalIllumination settings)
{
// Grab the high frequency history buffer
RTHandle indirectDiffuseHistoryHF = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.RaytracedIndirectDiffuseHF)
?? hdCamera.AllocHistoryFrameRT((int)HDCameraFrameHistoryType.RaytracedIndirectDiffuseHF, IndirectDiffuseHistoryBufferAllocatorFunction, 1);
// Request the intermediate textures we will be using
RTHandle intermediateBuffer1 = GetRayTracingBuffer(InternalRayTracingBuffers.RGBA1);
RTHandle validationBuffer = GetRayTracingBuffer(InternalRayTracingBuffers.R0);
// Evaluate the history validity
float historyValidity0 = EvaluateIndirectDiffuseHistoryValidity0(hdCamera, settings.fullResolution, true);
// Grab the temporal denoiser
HDTemporalFilter temporalFilter = GetTemporalFilter();
// Temporal denoising
TemporalFilterParameters tfParameters = temporalFilter.PrepareTemporalFilterParameters(hdCamera, false, historyValidity0);
TemporalFilterResources tfResources = temporalFilter.PrepareTemporalFilterResources(hdCamera, validationBuffer, m_IndirectDiffuseBuffer0, indirectDiffuseHistoryHF, intermediateBuffer1);
HDTemporalFilter.DenoiseBuffer(cmd, tfParameters, tfResources);
// Apply the first pass of our denoiser
HDDiffuseDenoiser diffuseDenoiser = GetDiffuseDenoiser();
DiffuseDenoiserParameters ddParams = diffuseDenoiser.PrepareDiffuseDenoiserParameters(hdCamera, false, settings.denoiserRadius, settings.halfResolutionDenoiser, settings.secondDenoiserPass);
RTHandle intermediateBuffer = GetRayTracingBuffer(InternalRayTracingBuffers.RGBA0);
DiffuseDenoiserResources ddResources = diffuseDenoiser.PrepareDiffuseDenoiserResources(intermediateBuffer1, intermediateBuffer, m_IndirectDiffuseBuffer0);
HDDiffuseDenoiser.DenoiseBuffer(cmd, ddParams, ddResources);
// If the second pass is requested, do it otherwise blit
if (settings.secondDenoiserPass)
{
float historyValidity1 = EvaluateIndirectDiffuseHistoryValidity1(hdCamera, settings.fullResolution, true);
// Grab the low frequency history buffer
RTHandle indirectDiffuseHistoryLF = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.RaytracedIndirectDiffuseLF)
?? hdCamera.AllocHistoryFrameRT((int)HDCameraFrameHistoryType.RaytracedIndirectDiffuseLF, IndirectDiffuseHistoryBufferAllocatorFunction, 1);
// Run the temporal denoiser
tfParameters = temporalFilter.PrepareTemporalFilterParameters(hdCamera, false, historyValidity1);
tfResources = temporalFilter.PrepareTemporalFilterResources(hdCamera, validationBuffer, m_IndirectDiffuseBuffer0, indirectDiffuseHistoryLF, intermediateBuffer1);
HDTemporalFilter.DenoiseBuffer(cmd, tfParameters, tfResources);
// Run the spatial denoiser
ddParams = diffuseDenoiser.PrepareDiffuseDenoiserParameters(hdCamera, false, settings.denoiserRadius * 0.5f, settings.halfResolutionDenoiser, false);
ddResources = diffuseDenoiser.PrepareDiffuseDenoiserResources(intermediateBuffer1, intermediateBuffer, m_IndirectDiffuseBuffer0);
HDDiffuseDenoiser.DenoiseBuffer(cmd, ddParams, ddResources);
PropagateIndirectDiffuseHistoryValidity1(hdCamera, settings.fullResolution, true);
}
// Propagate the history
PropagateIndirectDiffuseHistoryValidity0(hdCamera, settings.fullResolution, true);
}
public TextureHandle Denoise(RenderGraph renderGraph, HDCamera hdCamera, TemporalFilterParameters tfParameters,
TextureHandle noisyBuffer, TextureHandle velocityBuffer,
TextureHandle historyBuffer,
TextureHandle depthBuffer, TextureHandle normalBuffer, TextureHandle motionVectorBuffer, TextureHandle historyValidationBuffer)
{
using (var builder = renderGraph.AddRenderPass <TemporalFilterPassData>("TemporalDenoiser", out var passData, ProfilingSampler.Get(HDProfileId.TemporalFilter)))
{
// Cannot run in async
builder.EnableAsyncCompute(false);
// Fetch all the resources
passData.parameters = tfParameters;
// Prepass Buffers
passData.depthStencilBuffer = builder.ReadTexture(depthBuffer);
passData.normalBuffer = builder.ReadTexture(normalBuffer);
passData.motionVectorBuffer = builder.ReadTexture(motionVectorBuffer);
// Effect buffers
passData.velocityBuffer = builder.ReadTexture(velocityBuffer);
passData.noisyBuffer = builder.ReadTexture(noisyBuffer);
passData.validationBuffer = builder.ReadTexture(historyValidationBuffer);
// History buffer
passData.historyBuffer = builder.ReadWriteTexture(historyBuffer);
// Output buffers
passData.outputBuffer = builder.ReadWriteTexture(renderGraph.CreateTexture(new TextureDesc(Vector2.one, true, true)
{
colorFormat = GraphicsFormat.R16G16B16A16_SFloat, enableRandomWrite = true, name = "Temporal Filter Output"
}));
builder.SetRenderFunc(
(TemporalFilterPassData data, RenderGraphContext ctx) =>
{
TemporalFilterResources tfResources = new TemporalFilterResources();
tfResources.depthStencilBuffer = data.depthStencilBuffer;
tfResources.normalBuffer = data.normalBuffer;
tfResources.velocityBuffer = data.velocityBuffer;
tfResources.motionVectorBuffer = data.motionVectorBuffer;
tfResources.noisyBuffer = data.noisyBuffer;
tfResources.validationBuffer = data.validationBuffer;
tfResources.historyBuffer = data.historyBuffer;
tfResources.outputBuffer = data.outputBuffer;
DenoiseBuffer(ctx.cmd, data.parameters, tfResources);
});
return(passData.outputBuffer);
}
}
void RenderSubsurfaceScatteringRT(HDCamera hdCamera, CommandBuffer cmd, RTHandle colorBufferRT,
RTHandle diffuseBufferRT, RTHandle depthStencilBufferRT, RTHandle depthTextureRT)
{
using (new ProfilingScope(cmd, ProfilingSampler.Get(HDProfileId.SubsurfaceScattering)))
{
// Grab the SSS params
var settings = hdCamera.volumeStack.GetComponent <SubSurfaceScattering>();
// Fetch all the intermediate buffers that we need (too much of them to be fair)
RTHandle intermediateBuffer0 = GetRayTracingBuffer(InternalRayTracingBuffers.RGBA0);
RTHandle intermediateBuffer1 = GetRayTracingBuffer(InternalRayTracingBuffers.RGBA1);
RTHandle intermediateBuffer2 = GetRayTracingBuffer(InternalRayTracingBuffers.RGBA2);
RTHandle intermediateBuffer3 = GetRayTracingBuffer(InternalRayTracingBuffers.RGBA3);
RTHandle intermediateBuffer4 = GetRayTracingBuffer(InternalRayTracingBuffers.RGBA4);
RTHandle directionBuffer = GetRayTracingBuffer(InternalRayTracingBuffers.Direction);
// Evaluate the lighting for the samples that we need to
SSSRayTracingParameters sssrtParams = PrepareSSSRayTracingParameters(hdCamera, settings);
SSSRayTracingResources sssrtResources = PrepareSSSRayTracingResources(m_SSSColor,
intermediateBuffer0, intermediateBuffer1,
intermediateBuffer2, intermediateBuffer3, directionBuffer,
intermediateBuffer4);
ExecuteRTSubsurfaceScattering(cmd, sssrtParams, sssrtResources);
// Grab the history buffer
RTHandle subsurfaceHistory = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.RayTracedSubSurface)
?? hdCamera.AllocHistoryFrameRT((int)HDCameraFrameHistoryType.RayTracedSubSurface, SubSurfaceHistoryBufferAllocatorFunction, 1);
// Check if we need to invalidate the history
float historyValidity = EvaluateHistoryValidity(hdCamera);
// Apply temporal filtering to the signal
HDTemporalFilter temporalFilter = GetTemporalFilter();
TemporalFilterParameters tfParameters = temporalFilter.PrepareTemporalFilterParameters(hdCamera, false, historyValidity);
RTHandle validationBuffer = GetRayTracingBuffer(InternalRayTracingBuffers.R0);
TemporalFilterResources tfResources = temporalFilter.PrepareTemporalFilterResources(hdCamera, validationBuffer, intermediateBuffer4, subsurfaceHistory, intermediateBuffer0);
HDTemporalFilter.DenoiseBuffer(cmd, tfParameters, tfResources);
// Combine the result with the rest of the lighting
SSSCombineParameters ssscParams = PrepareSSSCombineParameters(hdCamera);
SSSCombineResources ssscResources = PrepareSSSCombineResources(m_SSSColor, colorBufferRT, diffuseBufferRT, intermediateBuffer0, ssscParams.validSSGI);
ExecuteCombineSubsurfaceScattering(cmd, ssscParams, ssscResources);
// Push this version of the texture for debug
PushFullScreenDebugTexture(hdCamera, cmd, diffuseBufferRT, FullScreenDebugMode.RayTracedSubSurface);
}
}
public TemporalFilterParameters PrepareTemporalFilterParameters(HDCamera hdCamera, bool singleChannel, float historyValidity)
{
TemporalFilterParameters temporalFilterParameters = new TemporalFilterParameters();
// Camera parameters
temporalFilterParameters.texWidth = hdCamera.actualWidth;
temporalFilterParameters.texHeight = hdCamera.actualHeight;
temporalFilterParameters.viewCount = hdCamera.viewCount;
// Denoising parameters
temporalFilterParameters.pixelSpreadTangent = HDRenderPipeline.GetPixelSpreadTangent(hdCamera.camera.fieldOfView, hdCamera.actualWidth, hdCamera.actualHeight);
temporalFilterParameters.historyValidity = historyValidity;
// Kernels
temporalFilterParameters.temporalAccKernel = singleChannel ? m_TemporalAccumulationSingleKernel : m_TemporalAccumulationColorKernel;
temporalFilterParameters.copyHistoryKernel = singleChannel ? m_CopyHistorySingleKernel : m_CopyHistoryColorKernel;
// Other parameters
temporalFilterParameters.temporalFilterCS = m_TemporalFilterCS;
return(temporalFilterParameters);
}
public void DenoiseAO(CommandBuffer cmd, HDCamera hdCamera, AmbientOcclusionDenoiseParameters aoDenoiseParameters, AmbientOcclusionDenoiseResources aoDenoiseResources)
{
if (aoDenoiseParameters.denoise)
{
// Prepare and execute the temporal filter
HDTemporalFilter temporalFilter = m_RenderPipeline.GetTemporalFilter();
TemporalFilterParameters tfParameters = temporalFilter.PrepareTemporalFilterParameters(hdCamera, true, aoDenoiseParameters.historyValidity);
RTHandle validationBuffer = m_RenderPipeline.GetRayTracingBuffer(InternalRayTracingBuffers.R0);
TemporalFilterResources tfResources = temporalFilter.PrepareTemporalFilterResources(hdCamera, validationBuffer, aoDenoiseResources.inputTexture, aoDenoiseResources.ambientOcclusionHistory, aoDenoiseResources.intermediateBuffer);
HDTemporalFilter.DenoiseBuffer(cmd, tfParameters, tfResources);
// Apply the diffuse denoiser
HDDiffuseDenoiser diffuseDenoiser = m_RenderPipeline.GetDiffuseDenoiser();
DiffuseDenoiserParameters ddParams = diffuseDenoiser.PrepareDiffuseDenoiserParameters(hdCamera, true, aoDenoiseParameters.denoiserRadius, false);
RTHandle intermediateBuffer = m_RenderPipeline.GetRayTracingBuffer(InternalRayTracingBuffers.RGBA0);
DiffuseDenoiserResources ddResources = diffuseDenoiser.PrepareDiffuseDenoiserResources(aoDenoiseResources.intermediateBuffer, intermediateBuffer, aoDenoiseResources.outputTexture);
HDDiffuseDenoiser.DenoiseBuffer(cmd, ddParams, ddResources);
}
else
{
HDUtils.BlitCameraTexture(cmd, aoDenoiseResources.inputTexture, aoDenoiseResources.outputTexture);
}
}
// Denoiser variant for non history array
internal TextureHandle Denoise(RenderGraph renderGraph, HDCamera hdCamera, TemporalFilterParameters filterParams,
TextureHandle noisyBuffer, TextureHandle velocityBuffer,
TextureHandle historyBuffer,
TextureHandle depthBuffer, TextureHandle normalBuffer, TextureHandle motionVectorBuffer, TextureHandle historyValidationBuffer)
{
using (var builder = renderGraph.AddRenderPass <TemporalFilterPassData>("TemporalDenoiser", out var passData, ProfilingSampler.Get(HDProfileId.TemporalFilter)))
{
// Cannot run in async
builder.EnableAsyncCompute(false);
// Camera parameters
passData.texWidth = hdCamera.actualWidth;
passData.texHeight = hdCamera.actualHeight;
passData.viewCount = hdCamera.viewCount;
// Denoising parameters
passData.pixelSpreadTangent = HDRenderPipeline.GetPixelSpreadTangent(hdCamera.camera.fieldOfView, hdCamera.actualWidth, hdCamera.actualHeight);
passData.historyValidity = filterParams.historyValidity;
passData.receiverMotionRejection = filterParams.receiverMotionRejection;
passData.occluderMotionRejection = filterParams.occluderMotionRejection;
passData.exposureControl = filterParams.exposureControl;
// Kernels
passData.temporalAccKernel = filterParams.singleChannel ? m_TemporalAccumulationSingleKernel : m_TemporalAccumulationColorKernel;
passData.copyHistoryKernel = m_CopyHistoryKernel;
// Other parameters
passData.temporalFilterCS = m_TemporalFilterCS;
// Prepass Buffers
passData.depthStencilBuffer = builder.ReadTexture(depthBuffer);
passData.normalBuffer = builder.ReadTexture(normalBuffer);
passData.motionVectorBuffer = builder.ReadTexture(motionVectorBuffer);
// Effect buffers
passData.velocityBuffer = builder.ReadTexture(velocityBuffer);
passData.noisyBuffer = builder.ReadTexture(noisyBuffer);
passData.validationBuffer = builder.ReadTexture(historyValidationBuffer);
// History buffer
passData.historyBuffer = builder.ReadWriteTexture(historyBuffer);
// Output buffers
passData.outputBuffer = builder.ReadWriteTexture(renderGraph.CreateTexture(new TextureDesc(Vector2.one, true, true)
{
colorFormat = GraphicsFormat.R16G16B16A16_SFloat, enableRandomWrite = true, name = "Temporal Filter Output"
}));
builder.SetRenderFunc(
(TemporalFilterPassData data, RenderGraphContext ctx) =>
{
// Evaluate the dispatch parameters
int areaTileSize = 8;
int numTilesX = (data.texWidth + (areaTileSize - 1)) / areaTileSize;
int numTilesY = (data.texHeight + (areaTileSize - 1)) / areaTileSize;
// Now that we have validated our history, let's accumulate
// Bind the input buffers
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.temporalAccKernel, HDShaderIDs._DenoiseInputTexture, data.noisyBuffer);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.temporalAccKernel, HDShaderIDs._HistoryBuffer, data.historyBuffer);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.temporalAccKernel, HDShaderIDs._DepthTexture, data.depthStencilBuffer);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.temporalAccKernel, HDShaderIDs._ValidationBuffer, data.validationBuffer);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.temporalAccKernel, HDShaderIDs._VelocityBuffer, data.velocityBuffer);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.temporalAccKernel, HDShaderIDs._CameraMotionVectorsTexture, data.motionVectorBuffer);
ctx.cmd.SetComputeFloatParam(data.temporalFilterCS, HDShaderIDs._HistoryValidity, data.historyValidity);
ctx.cmd.SetComputeIntParam(data.temporalFilterCS, HDShaderIDs._ReceiverMotionRejection, data.receiverMotionRejection ? 1 : 0);
ctx.cmd.SetComputeIntParam(data.temporalFilterCS, HDShaderIDs._OccluderMotionRejection, data.occluderMotionRejection ? 1 : 0);
ctx.cmd.SetComputeFloatParam(data.temporalFilterCS, HDShaderIDs._PixelSpreadAngleTangent, data.pixelSpreadTangent);
ctx.cmd.SetComputeFloatParam(data.temporalFilterCS, HDShaderIDs._EnableExposureControl, data.exposureControl);
// Bind the output buffer
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.temporalAccKernel, HDShaderIDs._AccumulationOutputTextureRW, data.outputBuffer);
// Combine signal with history
ctx.cmd.DispatchCompute(data.temporalFilterCS, data.temporalAccKernel, numTilesX, numTilesY, data.viewCount);
// Make sure to copy the new-accumulated signal in our history buffer
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.copyHistoryKernel, HDShaderIDs._DenoiseInputTexture, data.outputBuffer);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.copyHistoryKernel, HDShaderIDs._DenoiseOutputTextureRW, data.historyBuffer);
ctx.cmd.DispatchCompute(data.temporalFilterCS, data.copyHistoryKernel, numTilesX, numTilesY, data.viewCount);
});
return(passData.outputBuffer);
}
}