SSSAreaRayTraceParameters PrepareSSSAreaRayTraceParameters(HDCamera hdCamera, HDAdditionalLightData additionalLightData, LightData lightData, int lightIndex)
{
SSSAreaRayTraceParameters sssartParams = new SSSAreaRayTraceParameters();
// Set the camera parameters
sssartParams.texWidth = hdCamera.actualWidth;
sssartParams.texHeight = hdCamera.actualHeight;
sssartParams.viewCount = hdCamera.viewCount;
// Evaluation parameters
sssartParams.numSamples = additionalLightData.numRayTracingSamples;
sssartParams.lightIndex = lightIndex;
// We need to build the world to area light matrix
sssartParams.worldToLocalMatrix.SetColumn(0, lightData.right);
sssartParams.worldToLocalMatrix.SetColumn(1, lightData.up);
sssartParams.worldToLocalMatrix.SetColumn(2, lightData.forward);
// Compensate the relative rendering if active
Vector3 lightPositionWS = lightData.positionRWS;
if (ShaderConfig.s_CameraRelativeRendering != 0)
{
lightPositionWS += hdCamera.camera.transform.position;
}
sssartParams.worldToLocalMatrix.SetColumn(3, lightPositionWS);
sssartParams.worldToLocalMatrix.m33 = 1.0f;
sssartParams.worldToLocalMatrix = m_WorldToLocalArea.inverse;
sssartParams.historyValidity = EvaluateHistoryValidity(hdCamera);
sssartParams.filterTracedShadow = additionalLightData.filterTracedShadow;
sssartParams.areaShadowSlot = m_lightList.lights[lightIndex].screenSpaceShadowIndex;
sssartParams.filterSize = additionalLightData.filterSizeTraced;
// Kernels
sssartParams.areaRaytracingShadowPrepassKernel = m_AreaRaytracingShadowPrepassKernel;
sssartParams.areaRaytracingShadowNewSampleKernel = m_AreaRaytracingShadowNewSampleKernel;
sssartParams.areaShadowApplyTAAKernel = m_AreaShadowApplyTAAKernel;
sssartParams.areaUpdateAnalyticHistoryKernel = m_AreaUpdateAnalyticHistoryKernel;
sssartParams.areaUpdateShadowHistoryKernel = m_AreaUpdateShadowHistoryKernel;
sssartParams.areaEstimateNoiseKernel = m_AreaEstimateNoiseKernel;
sssartParams.areaFirstDenoiseKernel = m_AreaFirstDenoiseKernel;
sssartParams.areaSecondDenoiseKernel = m_AreaSecondDenoiseKernel;
sssartParams.areaShadowNoDenoiseKernel = m_AreaShadowNoDenoiseKernel;
// Other parameters
// Grab the acceleration structure for the target camera
sssartParams.accelerationStructure = RequestAccelerationStructure();
sssartParams.shaderVariablesRayTracingCB = m_ShaderVariablesRayTracingCB;
sssartParams.screenSpaceShadowsCS = m_ScreenSpaceShadowsCS;
sssartParams.screenSpaceShadowsRT = m_ScreenSpaceShadowsRT;
sssartParams.screenSpaceShadowsFilterCS = m_ScreenSpaceShadowsFilterCS;
sssartParams.scramblingTex = m_Asset.renderPipelineResources.textures.scramblingTex;
BlueNoise blueNoise = GetBlueNoiseManager();
sssartParams.ditheredTextureSet = blueNoise.DitheredTextureSet8SPP();
return(sssartParams);
}
static void ExecuteSSSAreaRayTrace(CommandBuffer cmd, SSSAreaRayTraceParameters sssartParams, SSSAreaRayTraceResources sssartResources)
{
// Inject the ray-tracing sampling data
BlueNoise.BindDitheredTextureSet(cmd, sssartParams.ditheredTextureSet);
// Evaluate the dispatch parameters
int areaTileSize = 8;
int numTilesX = (sssartParams.texWidth + (areaTileSize - 1)) / areaTileSize;
int numTilesY = (sssartParams.texHeight + (areaTileSize - 1)) / areaTileSize;
// We have noticed from extensive profiling that ray-trace shaders are not as effective for running per-pixel computation. In order to reduce that,
// we do a first prepass that compute the analytic term and probability and generates the first integration sample
// Bind the light data
cmd.SetComputeBufferParam(sssartParams.screenSpaceShadowsCS, sssartParams.areaRaytracingShadowPrepassKernel, HDShaderIDs._LightDatas, sssartResources.lightData);
cmd.SetComputeMatrixParam(sssartParams.screenSpaceShadowsCS, HDShaderIDs._RaytracingAreaWorldToLocal, sssartParams.worldToLocalMatrix);
cmd.SetComputeIntParam(sssartParams.screenSpaceShadowsCS, HDShaderIDs._RaytracingTargetAreaLight, sssartParams.lightIndex);
sssartParams.shaderVariablesRayTracingCB._RaytracingNumSamples = sssartParams.numSamples;
ConstantBuffer.PushGlobal(cmd, sssartParams.shaderVariablesRayTracingCB, HDShaderIDs._ShaderVariablesRaytracing);
// Bind the input buffers
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsCS, sssartParams.areaRaytracingShadowPrepassKernel, HDShaderIDs._DepthTexture, sssartResources.depthStencilBuffer);
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsCS, sssartParams.areaRaytracingShadowPrepassKernel, HDShaderIDs._NormalBufferTexture, sssartResources.normalBuffer);
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsCS, sssartParams.areaRaytracingShadowPrepassKernel, HDShaderIDs._GBufferTexture[0], sssartResources.gbuffer0);
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsCS, sssartParams.areaRaytracingShadowPrepassKernel, HDShaderIDs._GBufferTexture[1], sssartResources.gbuffer1);
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsCS, sssartParams.areaRaytracingShadowPrepassKernel, HDShaderIDs._GBufferTexture[2], sssartResources.gbuffer2);
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsCS, sssartParams.areaRaytracingShadowPrepassKernel, HDShaderIDs._GBufferTexture[3], sssartResources.gbuffer3);
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsCS, sssartParams.areaRaytracingShadowPrepassKernel, HDShaderIDs._CookieAtlas, sssartResources.cookieAtlasTexture);
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsCS, sssartParams.areaRaytracingShadowPrepassKernel, HDShaderIDs._StencilTexture, sssartResources.depthStencilBuffer, 0, RenderTextureSubElement.Stencil);
// Bind the output buffers
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsCS, sssartParams.areaRaytracingShadowPrepassKernel, HDShaderIDs._RaytracedAreaShadowIntegration, sssartResources.intermediateBufferRGBA0);
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsCS, sssartParams.areaRaytracingShadowPrepassKernel, HDShaderIDs._RaytracedAreaShadowSample, sssartResources.intermediateBufferRGBA1);
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsCS, sssartParams.areaRaytracingShadowPrepassKernel, HDShaderIDs._RaytracingDirectionBuffer, sssartResources.directionBuffer);
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsCS, sssartParams.areaRaytracingShadowPrepassKernel, HDShaderIDs._RayTracingLengthBuffer, sssartResources.rayLengthBuffer);
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsCS, sssartParams.areaRaytracingShadowPrepassKernel, HDShaderIDs._AnalyticProbBuffer, sssartResources.intermediateBufferRG0);
cmd.DispatchCompute(sssartParams.screenSpaceShadowsCS, sssartParams.areaRaytracingShadowPrepassKernel, numTilesX, numTilesY, sssartParams.viewCount);
// Set ray count texture
cmd.SetRayTracingTextureParam(sssartParams.screenSpaceShadowsRT, HDShaderIDs._RayCountTexture, sssartResources.rayCountTexture);
// Set the acceleration structure for the pass
cmd.SetRayTracingAccelerationStructure(sssartParams.screenSpaceShadowsRT, HDShaderIDs._RaytracingAccelerationStructureName, sssartParams.accelerationStructure);
// Define the shader pass to use for the reflection pass
cmd.SetRayTracingShaderPass(sssartParams.screenSpaceShadowsRT, "VisibilityDXR");
// Input data
cmd.SetRayTracingBufferParam(sssartParams.screenSpaceShadowsRT, HDShaderIDs._LightDatas, sssartResources.lightData);
cmd.SetRayTracingTextureParam(sssartParams.screenSpaceShadowsRT, HDShaderIDs._DepthTexture, sssartResources.depthStencilBuffer);
cmd.SetRayTracingTextureParam(sssartParams.screenSpaceShadowsRT, HDShaderIDs._NormalBufferTexture, sssartResources.normalBuffer);
cmd.SetRayTracingTextureParam(sssartParams.screenSpaceShadowsRT, HDShaderIDs._AnalyticProbBuffer, sssartResources.intermediateBufferRG0);
cmd.SetRayTracingTextureParam(sssartParams.screenSpaceShadowsRT, HDShaderIDs._RaytracedAreaShadowSample, sssartResources.intermediateBufferRGBA1);
cmd.SetRayTracingTextureParam(sssartParams.screenSpaceShadowsRT, HDShaderIDs._RaytracingDirectionBuffer, sssartResources.directionBuffer);
cmd.SetRayTracingTextureParam(sssartParams.screenSpaceShadowsRT, HDShaderIDs._RayTracingLengthBuffer, sssartResources.rayLengthBuffer);
cmd.SetRayTracingIntParam(sssartParams.screenSpaceShadowsRT, HDShaderIDs._RaytracingTargetAreaLight, sssartParams.lightIndex);
// Output data
cmd.SetRayTracingTextureParam(sssartParams.screenSpaceShadowsRT, HDShaderIDs._RaytracedAreaShadowIntegration, sssartResources.intermediateBufferRGBA0);
// Evaluate the intersection
cmd.DispatchRays(sssartParams.screenSpaceShadowsRT, m_RayGenAreaShadowSingleName, (uint)sssartParams.texWidth, (uint)sssartParams.texHeight, (uint)sssartParams.viewCount);
// Let's do the following samples (if any)
for (int sampleIndex = 1; sampleIndex < sssartParams.numSamples; ++sampleIndex)
{
// Update global Constant Buffer
sssartParams.shaderVariablesRayTracingCB._RaytracingNumSamples = sssartParams.numSamples;
sssartParams.shaderVariablesRayTracingCB._RaytracingSampleIndex = sampleIndex;
ConstantBuffer.PushGlobal(cmd, sssartParams.shaderVariablesRayTracingCB, HDShaderIDs._ShaderVariablesRaytracing);
// Bind the light data
cmd.SetComputeBufferParam(sssartParams.screenSpaceShadowsCS, sssartParams.areaRaytracingShadowNewSampleKernel, HDShaderIDs._LightDatas, sssartResources.lightData);
cmd.SetComputeIntParam(sssartParams.screenSpaceShadowsCS, HDShaderIDs._RaytracingTargetAreaLight, sssartParams.lightIndex);
cmd.SetComputeMatrixParam(sssartParams.screenSpaceShadowsCS, HDShaderIDs._RaytracingAreaWorldToLocal, sssartParams.worldToLocalMatrix);
// Input Buffers
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsCS, sssartParams.areaRaytracingShadowNewSampleKernel, HDShaderIDs._DepthTexture, sssartResources.depthStencilBuffer);
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsCS, sssartParams.areaRaytracingShadowNewSampleKernel, HDShaderIDs._NormalBufferTexture, sssartResources.normalBuffer);
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsCS, sssartParams.areaRaytracingShadowNewSampleKernel, HDShaderIDs._GBufferTexture[0], sssartResources.gbuffer0);
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsCS, sssartParams.areaRaytracingShadowNewSampleKernel, HDShaderIDs._GBufferTexture[1], sssartResources.gbuffer1);
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsCS, sssartParams.areaRaytracingShadowNewSampleKernel, HDShaderIDs._GBufferTexture[2], sssartResources.gbuffer2);
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsCS, sssartParams.areaRaytracingShadowNewSampleKernel, HDShaderIDs._GBufferTexture[3], sssartResources.gbuffer3);
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsCS, sssartParams.areaRaytracingShadowNewSampleKernel, HDShaderIDs._CookieAtlas, sssartResources.cookieAtlasTexture);
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsCS, sssartParams.areaRaytracingShadowNewSampleKernel, HDShaderIDs._StencilTexture, sssartResources.depthStencilBuffer, 0, RenderTextureSubElement.Stencil);
// Output buffers
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsCS, sssartParams.areaRaytracingShadowNewSampleKernel, HDShaderIDs._RaytracedAreaShadowSample, sssartResources.intermediateBufferRGBA1);
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsCS, sssartParams.areaRaytracingShadowNewSampleKernel, HDShaderIDs._RaytracingDirectionBuffer, sssartResources.directionBuffer);
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsCS, sssartParams.areaRaytracingShadowNewSampleKernel, HDShaderIDs._RayTracingLengthBuffer, sssartResources.rayLengthBuffer);
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsCS, sssartParams.areaRaytracingShadowNewSampleKernel, HDShaderIDs._AnalyticProbBuffer, sssartResources.intermediateBufferRG0);
cmd.DispatchCompute(sssartParams.screenSpaceShadowsCS, sssartParams.areaRaytracingShadowNewSampleKernel, numTilesX, numTilesY, sssartParams.viewCount);
// Input buffers
cmd.SetRayTracingBufferParam(sssartParams.screenSpaceShadowsRT, HDShaderIDs._LightDatas, sssartResources.lightData);
cmd.SetRayTracingTextureParam(sssartParams.screenSpaceShadowsRT, HDShaderIDs._DepthTexture, sssartResources.depthStencilBuffer);
cmd.SetRayTracingTextureParam(sssartParams.screenSpaceShadowsRT, HDShaderIDs._NormalBufferTexture, sssartResources.normalBuffer);
cmd.SetRayTracingTextureParam(sssartParams.screenSpaceShadowsRT, HDShaderIDs._RaytracedAreaShadowSample, sssartResources.intermediateBufferRGBA1);
cmd.SetRayTracingTextureParam(sssartParams.screenSpaceShadowsRT, HDShaderIDs._RaytracingDirectionBuffer, sssartResources.directionBuffer);
cmd.SetRayTracingTextureParam(sssartParams.screenSpaceShadowsRT, HDShaderIDs._RayTracingLengthBuffer, sssartResources.rayLengthBuffer);
cmd.SetRayTracingTextureParam(sssartParams.screenSpaceShadowsRT, HDShaderIDs._AnalyticProbBuffer, sssartResources.intermediateBufferRG0);
cmd.SetRayTracingIntParam(sssartParams.screenSpaceShadowsRT, HDShaderIDs._RaytracingTargetAreaLight, sssartParams.lightIndex);
// Output buffers
cmd.SetRayTracingTextureParam(sssartParams.screenSpaceShadowsRT, HDShaderIDs._RaytracedAreaShadowIntegration, sssartResources.intermediateBufferRGBA0);
// Evaluate the intersection
cmd.DispatchRays(sssartParams.screenSpaceShadowsRT, m_RayGenAreaShadowSingleName, (uint)sssartParams.texWidth, (uint)sssartParams.texHeight, (uint)sssartParams.viewCount);
}
if (sssartParams.filterTracedShadow)
{
Vector4 shadowChannelMask0 = new Vector4();
Vector4 shadowChannelMask1 = new Vector4();
Vector4 shadowChannelMask2 = new Vector4();
GetShadowChannelMask(sssartParams.areaShadowSlot, ScreenSpaceShadowType.Area, ref shadowChannelMask0);
GetShadowChannelMask(sssartParams.areaShadowSlot, ScreenSpaceShadowType.GrayScale, ref shadowChannelMask1);
GetShadowChannelMask(sssartParams.areaShadowSlot + 1, ScreenSpaceShadowType.GrayScale, ref shadowChannelMask2);
// Global parameters
cmd.SetComputeIntParam(sssartParams.screenSpaceShadowsFilterCS, HDShaderIDs._RaytracingDenoiseRadius, sssartParams.filterSize);
cmd.SetComputeIntParam(sssartParams.screenSpaceShadowsFilterCS, HDShaderIDs._DenoisingHistorySlice, sssartParams.areaShadowSlot / 4);
cmd.SetComputeVectorParam(sssartParams.screenSpaceShadowsFilterCS, HDShaderIDs._DenoisingHistoryMask, shadowChannelMask0);
cmd.SetComputeVectorParam(sssartParams.screenSpaceShadowsFilterCS, HDShaderIDs._DenoisingHistoryMaskSn, shadowChannelMask1);
cmd.SetComputeVectorParam(sssartParams.screenSpaceShadowsFilterCS, HDShaderIDs._DenoisingHistoryMaskUn, shadowChannelMask2);
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsFilterCS, sssartParams.areaShadowApplyTAAKernel, HDShaderIDs._AnalyticProbBuffer, sssartResources.intermediateBufferRG0);
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsFilterCS, sssartParams.areaShadowApplyTAAKernel, HDShaderIDs._DepthTexture, sssartResources.depthStencilBuffer);
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsFilterCS, sssartParams.areaShadowApplyTAAKernel, HDShaderIDs._AreaShadowHistory, sssartResources.shadowHistoryArray);
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsFilterCS, sssartParams.areaShadowApplyTAAKernel, HDShaderIDs._AnalyticHistoryBuffer, sssartResources.analyticHistoryArray);
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsFilterCS, sssartParams.areaShadowApplyTAAKernel, HDShaderIDs._DenoiseInputTexture, sssartResources.intermediateBufferRGBA0);
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsFilterCS, sssartParams.areaShadowApplyTAAKernel, HDShaderIDs._DenoiseOutputTextureRW, sssartResources.intermediateBufferRGBA1);
cmd.SetComputeFloatParam(sssartParams.screenSpaceShadowsFilterCS, HDShaderIDs._HistoryValidity, sssartParams.historyValidity);
cmd.DispatchCompute(sssartParams.screenSpaceShadowsFilterCS, sssartParams.areaShadowApplyTAAKernel, numTilesX, numTilesY, sssartParams.viewCount);
// Update the shadow history buffer
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsFilterCS, sssartParams.areaUpdateAnalyticHistoryKernel, HDShaderIDs._AnalyticProbBuffer, sssartResources.intermediateBufferRG0);
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsFilterCS, sssartParams.areaUpdateAnalyticHistoryKernel, HDShaderIDs._AnalyticHistoryBuffer, sssartResources.analyticHistoryArray);
cmd.DispatchCompute(sssartParams.screenSpaceShadowsFilterCS, sssartParams.areaUpdateAnalyticHistoryKernel, numTilesX, numTilesY, sssartParams.viewCount);
// Update the analytic history buffer
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsFilterCS, sssartParams.areaUpdateShadowHistoryKernel, HDShaderIDs._DenoiseInputTexture, sssartResources.intermediateBufferRGBA1);
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsFilterCS, sssartParams.areaUpdateShadowHistoryKernel, HDShaderIDs._AreaShadowHistoryRW, sssartResources.shadowHistoryArray);
cmd.DispatchCompute(sssartParams.screenSpaceShadowsFilterCS, sssartParams.areaUpdateShadowHistoryKernel, numTilesX, numTilesY, sssartParams.viewCount);
// Inject parameters for noise estimation
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsFilterCS, sssartParams.areaEstimateNoiseKernel, HDShaderIDs._DepthTexture, sssartResources.depthStencilBuffer);
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsFilterCS, sssartParams.areaEstimateNoiseKernel, HDShaderIDs._NormalBufferTexture, sssartResources.normalBuffer);
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsFilterCS, sssartParams.areaEstimateNoiseKernel, HDShaderIDs._ScramblingTexture, sssartParams.scramblingTex);
// Noise estimation pre-pass
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsFilterCS, sssartParams.areaEstimateNoiseKernel, HDShaderIDs._DenoiseInputTexture, sssartResources.intermediateBufferRGBA1);
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsFilterCS, sssartParams.areaEstimateNoiseKernel, HDShaderIDs._DenoiseOutputTextureRW, sssartResources.intermediateBufferRGBA0);
cmd.DispatchCompute(sssartParams.screenSpaceShadowsFilterCS, sssartParams.areaEstimateNoiseKernel, numTilesX, numTilesY, sssartParams.viewCount);
// Reinject parameters for denoising
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsFilterCS, sssartParams.areaFirstDenoiseKernel, HDShaderIDs._DepthTexture, sssartResources.depthStencilBuffer);
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsFilterCS, sssartParams.areaFirstDenoiseKernel, HDShaderIDs._NormalBufferTexture, sssartResources.normalBuffer);
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsFilterCS, sssartParams.areaFirstDenoiseKernel, HDShaderIDs._ScreenSpaceShadowsTextureRW, sssartResources.screenSpaceShadowTextureArray);
// First denoising pass
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsFilterCS, sssartParams.areaFirstDenoiseKernel, HDShaderIDs._DenoiseInputTexture, sssartResources.intermediateBufferRGBA0);
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsFilterCS, sssartParams.areaFirstDenoiseKernel, HDShaderIDs._DenoiseOutputTextureRW, sssartResources.intermediateBufferRGBA1);
cmd.DispatchCompute(sssartParams.screenSpaceShadowsFilterCS, sssartParams.areaFirstDenoiseKernel, numTilesX, numTilesY, sssartParams.viewCount);
// Re-inject parameters for denoising
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsFilterCS, sssartParams.areaSecondDenoiseKernel, HDShaderIDs._DepthTexture, sssartResources.depthStencilBuffer);
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsFilterCS, sssartParams.areaSecondDenoiseKernel, HDShaderIDs._NormalBufferTexture, sssartResources.normalBuffer);
// Second (and final) denoising pass
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsFilterCS, sssartParams.areaSecondDenoiseKernel, HDShaderIDs._DenoiseInputTexture, sssartResources.intermediateBufferRGBA1);
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsFilterCS, sssartParams.areaSecondDenoiseKernel, HDShaderIDs._DenoiseOutputTextureRW, sssartResources.intermediateBufferRGBA0);
cmd.DispatchCompute(sssartParams.screenSpaceShadowsFilterCS, sssartParams.areaSecondDenoiseKernel, numTilesX, numTilesY, sssartParams.viewCount);
}
else
{
Vector4 shadowChannelMask0 = new Vector4();
int areaShadowSlice = sssartParams.areaShadowSlot / 4;
GetShadowChannelMask(sssartParams.areaShadowSlot, ScreenSpaceShadowType.Area, ref shadowChannelMask0);
cmd.SetComputeVectorParam(sssartParams.screenSpaceShadowsFilterCS, HDShaderIDs._DenoisingHistoryMask, shadowChannelMask0);
cmd.SetComputeIntParam(sssartParams.screenSpaceShadowsFilterCS, HDShaderIDs._DenoisingHistorySlice, areaShadowSlice);
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsFilterCS, sssartParams.areaShadowNoDenoiseKernel, HDShaderIDs._DenoiseInputTexture, sssartResources.intermediateBufferRGBA0);
cmd.SetComputeTextureParam(sssartParams.screenSpaceShadowsFilterCS, sssartParams.areaShadowNoDenoiseKernel, HDShaderIDs._ScreenSpaceShadowsTextureRW, sssartResources.screenSpaceShadowTextureArray);
cmd.DispatchCompute(sssartParams.screenSpaceShadowsFilterCS, sssartParams.areaShadowNoDenoiseKernel, numTilesX, numTilesY, sssartParams.viewCount);
}
}