public void RenderReflectionsT1(HDCamera hdCamera, CommandBuffer cmd, RTHandleSystem.RTHandle outputTexture, ScriptableRenderContext renderContext, int frameCount)
{
// First thing to check is: Do we have a valid ray-tracing environment?
HDRaytracingEnvironment rtEnvironment = m_RayTracingManager.CurrentEnvironment();
// If no ray tracing environment, then we do not want to evaluate this effect
if (rtEnvironment == null)
{
return;
}
// Fetch the required resources
BlueNoise blueNoise = m_RayTracingManager.GetBlueNoiseManager();
RayTracingShader reflectionShaderRT = m_Asset.renderPipelineRayTracingResources.reflectionRaytracingRT;
ComputeShader reflectionShaderCS = m_Asset.renderPipelineRayTracingResources.reflectionRaytracingCS;
ComputeShader reflectionFilter = m_Asset.renderPipelineRayTracingResources.reflectionBilateralFilterCS;
// Fetch all the settings
var settings = VolumeManager.instance.stack.GetComponent <ScreenSpaceReflection>();
LightCluster lightClusterSettings = VolumeManager.instance.stack.GetComponent <LightCluster>();
if (settings.deferredMode.value)
{
// Fetch the new sample kernel
int currentKernel = reflectionShaderCS.FindKernel(settings.fullResolution.value ? "RaytracingReflectionsFullRes" : "RaytracingReflectionsHalfRes");
// Bind all the required textures
cmd.SetComputeTextureParam(reflectionShaderCS, currentKernel, HDShaderIDs._OwenScrambledTexture, m_Asset.renderPipelineResources.textures.owenScrambledTex);
cmd.SetComputeTextureParam(reflectionShaderCS, currentKernel, HDShaderIDs._ScramblingTexture, m_Asset.renderPipelineResources.textures.scramblingTex);
cmd.SetComputeTextureParam(reflectionShaderCS, currentKernel, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetComputeTextureParam(reflectionShaderCS, currentKernel, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer());
RenderTargetIdentifier clearCoatMaskTexture = hdCamera.frameSettings.litShaderMode == LitShaderMode.Deferred ? m_GbufferManager.GetBuffersRTI()[2] : TextureXR.GetBlackTexture();
cmd.SetComputeTextureParam(reflectionShaderCS, currentKernel, HDShaderIDs._SsrClearCoatMaskTexture, clearCoatMaskTexture);
// Bind all the required scalars
cmd.SetComputeFloatParam(reflectionShaderCS, HDShaderIDs._RaytracingIntensityClamp, settings.clampValue.value);
cmd.SetComputeFloatParam(reflectionShaderCS, HDShaderIDs._RaytracingReflectionMinSmoothness, settings.minSmoothness.value);
cmd.SetComputeIntParam(reflectionShaderCS, HDShaderIDs._RaytracingReflectSky, settings.reflectSky.value ? 1 : 0);
// Bind the sampling data
int frameIndex = hdCamera.IsTAAEnabled() ? hdCamera.taaFrameIndex : (int)m_FrameCount % 8;
cmd.SetComputeIntParam(reflectionShaderCS, HDShaderIDs._RaytracingFrameIndex, frameIndex);
// Bind the output buffers
cmd.SetComputeTextureParam(reflectionShaderCS, currentKernel, HDShaderIDs._RaytracingDirectionBuffer, m_ReflIntermediateTexture1);
// Texture dimensions
int texWidth = hdCamera.actualWidth;
int texHeight = hdCamera.actualHeight;
if (settings.fullResolution.value)
{
// Evaluate the dispatch parameters
int areaTileSize = 8;
int numTilesXHR = (texWidth + (areaTileSize - 1)) / areaTileSize;
int numTilesYHR = (texHeight + (areaTileSize - 1)) / areaTileSize;
// Compute the directions
cmd.DispatchCompute(reflectionShaderCS, currentKernel, numTilesXHR, numTilesYHR, 1);
}
else
{
// Evaluate the dispatch parameters
int areaTileSize = 8;
int numTilesXHR = (texWidth / 2 + (areaTileSize - 1)) / areaTileSize;
int numTilesYHR = (texHeight / 2 + (areaTileSize - 1)) / areaTileSize;
// Compute the directions
cmd.DispatchCompute(reflectionShaderCS, currentKernel, numTilesXHR, numTilesYHR, 1);
}
// Evaluate the deferred lighting
cmd.SetGlobalInt(HDShaderIDs._RaytracingReflectSky, settings.reflectSky.value ? 1 : 0);
RenderRaytracingDeferredLighting(cmd, hdCamera, rtEnvironment, m_ReflIntermediateTexture1, settings.rayBinning.value, rtEnvironment.reflLayerMask, settings.rayLength.value, m_ReflIntermediateTexture0, disableSpecularLighting: true, halfResolution: !settings.fullResolution.value);
}
else
{
// Bind all the required data for ray tracing
BindRayTracedReflectionData(cmd, hdCamera, rtEnvironment, reflectionShaderRT, settings, lightClusterSettings);
// Set the data for the ray miss
cmd.SetRayTracingTextureParam(reflectionShaderRT, HDShaderIDs._SkyTexture, m_SkyManager.skyReflection);
// Force to disable specular lighting
cmd.SetGlobalInt(HDShaderIDs._EnableSpecularLighting, 0);
// Run the computation
if (settings.fullResolution.value)
{
cmd.DispatchRays(reflectionShaderRT, m_RayGenReflectionFullResName, (uint)hdCamera.actualWidth, (uint)hdCamera.actualHeight, 1);
}
else
{
// Run the computation
cmd.DispatchRays(reflectionShaderRT, m_RayGenReflectionHalfResName, (uint)(hdCamera.actualWidth / 2), (uint)(hdCamera.actualHeight / 2), 1);
}
// Restore the previous state of specular lighting
cmd.SetGlobalInt(HDShaderIDs._EnableSpecularLighting, hdCamera.frameSettings.IsEnabled(FrameSettingsField.SpecularLighting) ? 1 : 0);
}
using (new ProfilingSample(cmd, "Filter Reflection", CustomSamplerId.RaytracingFilterReflection.GetSampler()))
{
// Fetch the right filter to use
int currentKernel = 0;
if (settings.fullResolution.value)
{
currentKernel = reflectionFilter.FindKernel("ReflectionIntegrationUpscaleFullRes");
}
else
{
currentKernel = reflectionFilter.FindKernel("ReflectionIntegrationUpscaleHalfRes");
}
// Inject all the parameters for the compute
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._SsrLightingTextureRW, m_ReflIntermediateTexture0);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._SsrHitPointTexture, m_ReflIntermediateTexture1);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer());
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, "_NoiseTexture", blueNoise.textureArray16RGB);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, "_RaytracingReflectionTexture", outputTexture);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._ScramblingTexture, m_Asset.renderPipelineResources.textures.scramblingTex);
cmd.SetComputeIntParam(reflectionFilter, HDShaderIDs._SpatialFilterRadius, settings.spatialFilterRadius.value);
cmd.SetComputeIntParam(reflectionFilter, HDShaderIDs._RaytracingDenoiseRadius, settings.enableFilter.value ? settings.filterRadius.value : 0);
cmd.SetComputeFloatParam(reflectionFilter, HDShaderIDs._RaytracingReflectionMinSmoothness, settings.minSmoothness.value);
// Texture dimensions
int texWidth = hdCamera.actualWidth;
int texHeight = hdCamera.actualHeight;
// Evaluate the dispatch parameters
int areaTileSize = 8;
int numTilesXHR = (texWidth + (areaTileSize - 1)) / areaTileSize;
int numTilesYHR = (texHeight + (areaTileSize - 1)) / areaTileSize;
// Bind the right texture for clear coat support
RenderTargetIdentifier clearCoatMaskTexture = hdCamera.frameSettings.litShaderMode == LitShaderMode.Deferred ? m_GbufferManager.GetBuffersRTI()[2] : TextureXR.GetBlackTexture();
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._SsrClearCoatMaskTexture, clearCoatMaskTexture);
// Compute the texture
cmd.DispatchCompute(reflectionFilter, currentKernel, numTilesXHR, numTilesYHR, 1);
using (new ProfilingSample(cmd, "Filter Reflection", CustomSamplerId.RaytracingFilterReflection.GetSampler()))
{
if (settings.enableFilter.value)
{
// Grab the history buffer
RTHandleSystem.RTHandle reflectionHistory = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.RaytracedReflection)
?? hdCamera.AllocHistoryFrameRT((int)HDCameraFrameHistoryType.RaytracedReflection, ReflectionHistoryBufferAllocatorFunction, 1);
HDSimpleDenoiser simpleDenoiser = m_RayTracingManager.GetSimpleDenoiser();
simpleDenoiser.DenoiseBuffer(cmd, hdCamera, outputTexture, reflectionHistory, m_ReflIntermediateTexture0, settings.filterRadius.value, singleChannel: false);
HDUtils.BlitCameraTexture(cmd, m_ReflIntermediateTexture0, outputTexture);
}
}
}
}
public void RenderReflections(HDCamera hdCamera, CommandBuffer cmd, RTHandleSystem.RTHandle outputTexture, ScriptableRenderContext renderContext, uint frameCount)
{
// First thing to check is: Do we have a valid ray-tracing environment?
HDRaytracingEnvironment rtEnvironement = m_RaytracingManager.CurrentEnvironment();
BlueNoise blueNoise = m_RaytracingManager.GetBlueNoiseManager();
ComputeShader bilateralFilter = m_PipelineAsset.renderPipelineResources.shaders.reflectionBilateralFilterCS;
RaytracingShader reflectionShader = m_PipelineAsset.renderPipelineResources.shaders.reflectionRaytracing;
bool missingResources = rtEnvironement == null || blueNoise == null || bilateralFilter == null || reflectionShader == null ||
m_PipelineResources.textures.owenScrambledTex == null || m_PipelineResources.textures.scramblingTex == null;
// Try to grab the acceleration structure and the list of HD lights for the target camera
RaytracingAccelerationStructure accelerationStructure = m_RaytracingManager.RequestAccelerationStructure(hdCamera);
HDRaytracingLightCluster lightCluster = m_RaytracingManager.RequestLightCluster(hdCamera);
// If no acceleration structure available, end it now
if (accelerationStructure == null || lightCluster == null || missingResources)
{
return;
}
// Compute the actual resolution that is needed base on the quality
string targetRayGen = "";
switch (rtEnvironement.reflQualityMode)
{
case HDRaytracingEnvironment.ReflectionsQuality.QuarterRes:
{
targetRayGen = m_RayGenHalfResName;
};
break;
case HDRaytracingEnvironment.ReflectionsQuality.Integration:
{
targetRayGen = m_RayGenIntegrationName;
};
break;
}
// Define the shader pass to use for the reflection pass
cmd.SetRaytracingShaderPass(reflectionShader, "ReflectionDXR");
// Set the acceleration structure for the pass
cmd.SetRaytracingAccelerationStructure(reflectionShader, HDShaderIDs._RaytracingAccelerationStructureName, accelerationStructure);
// Inject the ray-tracing sampling data
cmd.SetRaytracingTextureParam(reflectionShader, targetRayGen, HDShaderIDs._OwenScrambledTexture, m_PipelineResources.textures.owenScrambledTex);
cmd.SetRaytracingTextureParam(reflectionShader, targetRayGen, HDShaderIDs._ScramblingTexture, m_PipelineResources.textures.scramblingTex);
// Global reflection parameters
cmd.SetRaytracingFloatParams(reflectionShader, HDShaderIDs._RaytracingIntensityClamp, rtEnvironement.reflClampValue);
cmd.SetRaytracingFloatParams(reflectionShader, HDShaderIDs._RaytracingReflectionMinSmoothness, rtEnvironement.reflMinSmoothness);
cmd.SetRaytracingFloatParams(reflectionShader, HDShaderIDs._RaytracingReflectionMaxDistance, rtEnvironement.reflBlendDistance);
// Inject the ray generation data
cmd.SetGlobalFloat(HDShaderIDs._RaytracingRayBias, rtEnvironement.rayBias);
cmd.SetGlobalFloat(HDShaderIDs._RaytracingRayMaxLength, rtEnvironement.reflRayLength);
cmd.SetRaytracingIntParams(reflectionShader, HDShaderIDs._RaytracingNumSamples, rtEnvironement.reflNumMaxSamples);
int frameIndex = hdCamera.IsTAAEnabled() ? hdCamera.taaFrameIndex : (int)frameCount % 8;
cmd.SetGlobalInt(HDShaderIDs._RaytracingFrameIndex, frameIndex);
// Set the data for the ray generation
cmd.SetRaytracingTextureParam(reflectionShader, targetRayGen, HDShaderIDs._SsrLightingTextureRW, m_LightingTexture);
cmd.SetRaytracingTextureParam(reflectionShader, targetRayGen, HDShaderIDs._SsrHitPointTexture, m_HitPdfTexture);
cmd.SetRaytracingTextureParam(reflectionShader, targetRayGen, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetRaytracingTextureParam(reflectionShader, targetRayGen, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer());
// Set ray count tex
cmd.SetRaytracingIntParam(reflectionShader, HDShaderIDs._RayCountEnabled, m_RaytracingManager.rayCountManager.rayCountEnabled);
cmd.SetRaytracingTextureParam(reflectionShader, targetRayGen, HDShaderIDs._RayCountTexture, m_RaytracingManager.rayCountManager.rayCountTex);
// Compute the pixel spread value
float pixelSpreadAngle = Mathf.Atan(2.0f * Mathf.Tan(hdCamera.camera.fieldOfView * Mathf.PI / 360.0f) / Mathf.Min(hdCamera.actualWidth, hdCamera.actualHeight));
cmd.SetRaytracingFloatParam(reflectionShader, HDShaderIDs._RaytracingPixelSpreadAngle, pixelSpreadAngle);
// LightLoop data
cmd.SetGlobalBuffer(HDShaderIDs._RaytracingLightCluster, lightCluster.GetCluster());
cmd.SetGlobalBuffer(HDShaderIDs._LightDatasRT, lightCluster.GetLightDatas());
cmd.SetGlobalVector(HDShaderIDs._MinClusterPos, lightCluster.GetMinClusterPos());
cmd.SetGlobalVector(HDShaderIDs._MaxClusterPos, lightCluster.GetMaxClusterPos());
cmd.SetGlobalInt(HDShaderIDs._LightPerCellCount, rtEnvironement.maxNumLightsPercell);
cmd.SetGlobalInt(HDShaderIDs._PunctualLightCountRT, lightCluster.GetPunctualLightCount());
cmd.SetGlobalInt(HDShaderIDs._AreaLightCountRT, lightCluster.GetAreaLightCount());
// Evaluate the clear coat mask texture based on the lit shader mode
RenderTargetIdentifier clearCoatMaskTexture = hdCamera.frameSettings.litShaderMode == LitShaderMode.Deferred ? m_GbufferManager.GetBuffersRTI()[2] : Texture2D.blackTexture;
cmd.SetRaytracingTextureParam(reflectionShader, targetRayGen, HDShaderIDs._SsrClearCoatMaskTexture, clearCoatMaskTexture);
// Set the data for the ray miss
cmd.SetRaytracingTextureParam(reflectionShader, m_MissShaderName, HDShaderIDs._SkyTexture, m_SkyManager.skyReflection);
// Compute the actual resolution that is needed base on the quality
uint widthResolution = 1, heightResolution = 1;
switch (rtEnvironement.reflQualityMode)
{
case HDRaytracingEnvironment.ReflectionsQuality.QuarterRes:
{
widthResolution = (uint)hdCamera.actualWidth / 2;
heightResolution = (uint)hdCamera.actualHeight / 2;
};
break;
case HDRaytracingEnvironment.ReflectionsQuality.Integration:
{
widthResolution = (uint)hdCamera.actualWidth;
heightResolution = (uint)hdCamera.actualHeight;
};
break;
}
// Run the calculus
cmd.DispatchRays(reflectionShader, targetRayGen, widthResolution, heightResolution, 1);
using (new ProfilingSample(cmd, "Filter Reflection", CustomSamplerId.RaytracingFilterReflection.GetSampler()))
{
switch (rtEnvironement.reflQualityMode)
{
case HDRaytracingEnvironment.ReflectionsQuality.QuarterRes:
{
// Fetch the right filter to use
int currentKernel = bilateralFilter.FindKernel("RaytracingReflectionFilter");
// Inject all the parameters for the compute
cmd.SetComputeTextureParam(bilateralFilter, currentKernel, HDShaderIDs._SsrLightingTextureRW, m_LightingTexture);
cmd.SetComputeTextureParam(bilateralFilter, currentKernel, HDShaderIDs._SsrHitPointTexture, m_HitPdfTexture);
cmd.SetComputeTextureParam(bilateralFilter, currentKernel, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetComputeTextureParam(bilateralFilter, currentKernel, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer());
cmd.SetComputeTextureParam(bilateralFilter, currentKernel, "_NoiseTexture", blueNoise.textureArray16RGB);
cmd.SetComputeTextureParam(bilateralFilter, currentKernel, "_VarianceTexture", m_VarianceBuffer);
cmd.SetComputeTextureParam(bilateralFilter, currentKernel, "_MinColorRangeTexture", m_MinBoundBuffer);
cmd.SetComputeTextureParam(bilateralFilter, currentKernel, "_MaxColorRangeTexture", m_MaxBoundBuffer);
cmd.SetComputeTextureParam(bilateralFilter, currentKernel, "_RaytracingReflectionTexture", outputTexture);
cmd.SetComputeTextureParam(bilateralFilter, currentKernel, HDShaderIDs._ScramblingTexture, m_PipelineResources.textures.scramblingTex);
cmd.SetComputeIntParam(bilateralFilter, HDShaderIDs._SpatialFilterRadius, rtEnvironement.reflSpatialFilterRadius);
// Texture dimensions
int texWidth = outputTexture.rt.width;
int texHeight = outputTexture.rt.width;
// Evaluate the dispatch parameters
int areaTileSize = 8;
int numTilesXHR = (texWidth / 2 + (areaTileSize - 1)) / areaTileSize;
int numTilesYHR = (texHeight / 2 + (areaTileSize - 1)) / areaTileSize;
// Bind the right texture for clear coat support
cmd.SetComputeTextureParam(bilateralFilter, currentKernel, HDShaderIDs._SsrClearCoatMaskTexture, clearCoatMaskTexture);
// Compute the texture
cmd.DispatchCompute(bilateralFilter, currentKernel, numTilesXHR, numTilesYHR, 1);
int numTilesXFR = (texWidth + (areaTileSize - 1)) / areaTileSize;
int numTilesYFR = (texHeight + (areaTileSize - 1)) / areaTileSize;
RTHandleSystem.RTHandle history = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.RaytracedReflection)
?? hdCamera.AllocHistoryFrameRT((int)HDCameraFrameHistoryType.RaytracedReflection, ReflectionHistoryBufferAllocatorFunction, 1);
// Fetch the right filter to use
currentKernel = bilateralFilter.FindKernel("TemporalAccumulationFilter");
cmd.SetComputeFloatParam(bilateralFilter, HDShaderIDs._TemporalAccumuationWeight, rtEnvironement.reflTemporalAccumulationWeight);
cmd.SetComputeTextureParam(bilateralFilter, currentKernel, HDShaderIDs._AccumulatedFrameTexture, history);
cmd.SetComputeTextureParam(bilateralFilter, currentKernel, HDShaderIDs._CurrentFrameTexture, outputTexture);
cmd.SetComputeTextureParam(bilateralFilter, currentKernel, "_MinColorRangeTexture", m_MinBoundBuffer);
cmd.SetComputeTextureParam(bilateralFilter, currentKernel, "_MaxColorRangeTexture", m_MaxBoundBuffer);
cmd.DispatchCompute(bilateralFilter, currentKernel, numTilesXFR, numTilesYFR, 1);
}
break;
case HDRaytracingEnvironment.ReflectionsQuality.Integration:
{
HDUtils.BlitCameraTexture(cmd, hdCamera, m_LightingTexture, outputTexture);
}
break;
}
}
}
public bool RenderIndirectDiffuse(HDCamera hdCamera, CommandBuffer cmd, ScriptableRenderContext renderContext, uint frameCount)
{
// Bind the indirect diffuse texture
BindIndirectDiffuseTexture(cmd);
// First thing to check is: Do we have a valid ray-tracing environment?
HDRaytracingEnvironment rtEnvironement = m_RaytracingManager.CurrentEnvironment();
RaytracingShader indirectDiffuseShader = m_PipelineAsset.renderPipelineResources.shaders.indirectDiffuseRaytracing;
ComputeShader indirectDiffuseAccumulation = m_PipelineAsset.renderPipelineResources.shaders.indirectDiffuseAccumulation;
bool invalidState = rtEnvironement == null || !rtEnvironement.raytracedIndirectDiffuse ||
indirectDiffuseShader == null || indirectDiffuseAccumulation == null ||
m_PipelineResources.textures.owenScrambledTex == null || m_PipelineResources.textures.scramblingTex == null;
// If no acceleration structure available, end it now
if (!ValidIndirectDiffuseState())
{
return(false);
}
// Grab the acceleration structures and the light cluster to use
RaytracingAccelerationStructure accelerationStructure = m_RaytracingManager.RequestAccelerationStructure(rtEnvironement.indirectDiffuseLayerMask);
HDRaytracingLightCluster lightCluster = m_RaytracingManager.RequestLightCluster(rtEnvironement.indirectDiffuseLayerMask);
// Compute the actual resolution that is needed base on the quality
string targetRayGen = m_RayGenIndirectDiffuseName;
// Define the shader pass to use for the indirect diffuse pass
cmd.SetRaytracingShaderPass(indirectDiffuseShader, "IndirectDXR");
// Set the acceleration structure for the pass
cmd.SetRaytracingAccelerationStructure(indirectDiffuseShader, HDShaderIDs._RaytracingAccelerationStructureName, accelerationStructure);
// Inject the ray-tracing sampling data
cmd.SetRaytracingTextureParam(indirectDiffuseShader, targetRayGen, HDShaderIDs._OwenScrambledTexture, m_PipelineResources.textures.owenScrambledTex);
cmd.SetRaytracingTextureParam(indirectDiffuseShader, targetRayGen, HDShaderIDs._ScramblingTexture, m_PipelineResources.textures.scramblingTex);
// Inject the ray generation data
cmd.SetGlobalFloat(HDShaderIDs._RaytracingRayBias, rtEnvironement.rayBias);
cmd.SetGlobalFloat(HDShaderIDs._RaytracingRayMaxLength, rtEnvironement.indirectDiffuseRayLength);
cmd.SetRaytracingIntParams(indirectDiffuseShader, HDShaderIDs._RaytracingNumSamples, rtEnvironement.indirectDiffuseNumSamples);
int frameIndex = hdCamera.IsTAAEnabled() ? hdCamera.taaFrameIndex : (int)frameCount % 8;
cmd.SetGlobalInt(HDShaderIDs._RaytracingFrameIndex, frameIndex);
// Set the data for the ray generation
cmd.SetRaytracingTextureParam(indirectDiffuseShader, targetRayGen, HDShaderIDs._IndirectDiffuseTextureRW, m_IndirectDiffuseTexture);
cmd.SetRaytracingTextureParam(indirectDiffuseShader, targetRayGen, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetRaytracingTextureParam(indirectDiffuseShader, targetRayGen, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer());
// Set the indirect diffuse parameters
cmd.SetRaytracingFloatParams(indirectDiffuseShader, HDShaderIDs._RaytracingIntensityClamp, rtEnvironement.indirectDiffuseClampValue);
// Set ray count tex
cmd.SetRaytracingIntParam(indirectDiffuseShader, HDShaderIDs._RayCountEnabled, m_RaytracingManager.rayCountManager.RayCountIsEnabled());
cmd.SetRaytracingTextureParam(indirectDiffuseShader, targetRayGen, HDShaderIDs._RayCountTexture, m_RaytracingManager.rayCountManager.rayCountTexture);
// Compute the pixel spread value
float pixelSpreadAngle = Mathf.Atan(2.0f * Mathf.Tan(hdCamera.camera.fieldOfView * Mathf.PI / 360.0f) / Mathf.Min(hdCamera.actualWidth, hdCamera.actualHeight));
cmd.SetRaytracingFloatParam(indirectDiffuseShader, HDShaderIDs._RaytracingPixelSpreadAngle, pixelSpreadAngle);
// LightLoop data
cmd.SetGlobalBuffer(HDShaderIDs._RaytracingLightCluster, lightCluster.GetCluster());
cmd.SetGlobalBuffer(HDShaderIDs._LightDatasRT, lightCluster.GetLightDatas());
cmd.SetGlobalVector(HDShaderIDs._MinClusterPos, lightCluster.GetMinClusterPos());
cmd.SetGlobalVector(HDShaderIDs._MaxClusterPos, lightCluster.GetMaxClusterPos());
cmd.SetGlobalInt(HDShaderIDs._LightPerCellCount, rtEnvironement.maxNumLightsPercell);
cmd.SetGlobalInt(HDShaderIDs._PunctualLightCountRT, lightCluster.GetPunctualLightCount());
cmd.SetGlobalInt(HDShaderIDs._AreaLightCountRT, lightCluster.GetAreaLightCount());
// Set the data for the ray miss
cmd.SetRaytracingTextureParam(indirectDiffuseShader, m_MissShaderName, HDShaderIDs._SkyTexture, m_SkyManager.skyReflection);
// Compute the actual resolution that is needed base on the quality
int widthResolution = hdCamera.actualWidth;
int heightResolution = hdCamera.actualHeight;
// Run the calculus
CoreUtils.SetKeyword(cmd, "DIFFUSE_LIGHTING_ONLY", true);
cmd.DispatchRays(indirectDiffuseShader, targetRayGen, (uint)widthResolution, (uint)heightResolution, 1);
CoreUtils.SetKeyword(cmd, "DIFFUSE_LIGHTING_ONLY", false);
switch (rtEnvironement.indirectDiffuseFilterMode)
{
case HDRaytracingEnvironment.IndirectDiffuseFilterMode.SpatioTemporal:
{
// Grab the history buffer
RTHandleSystem.RTHandle indirectDiffuseHistory = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.RaytracedIndirectDiffuse)
?? hdCamera.AllocHistoryFrameRT((int)HDCameraFrameHistoryType.RaytracedIndirectDiffuse, IndirectDiffuseHistoryBufferAllocatorFunction, 1);
// 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 = indirectDiffuseAccumulation.FindKernel("RaytracingIndirectDiffuseTAA");
// Compute the combined TAA frame
var historyScale = new Vector2(hdCamera.actualWidth / (float)indirectDiffuseHistory.rt.width, hdCamera.actualHeight / (float)indirectDiffuseHistory.rt.height);
cmd.SetComputeVectorParam(indirectDiffuseAccumulation, HDShaderIDs._ScreenToTargetScaleHistory, historyScale);
cmd.SetComputeTextureParam(indirectDiffuseAccumulation, m_KernelFilter, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetComputeTextureParam(indirectDiffuseAccumulation, m_KernelFilter, HDShaderIDs._DenoiseInputTexture, m_IndirectDiffuseTexture);
cmd.SetComputeTextureParam(indirectDiffuseAccumulation, m_KernelFilter, HDShaderIDs._DenoiseOutputTextureRW, m_DenoiseBuffer0);
cmd.SetComputeTextureParam(indirectDiffuseAccumulation, m_KernelFilter, HDShaderIDs._IndirectDiffuseHistorybufferRW, indirectDiffuseHistory);
cmd.DispatchCompute(indirectDiffuseAccumulation, m_KernelFilter, numTilesX, numTilesY, 1);
// Output the new history
HDUtils.BlitCameraTexture(cmd, hdCamera, m_DenoiseBuffer0, indirectDiffuseHistory);
m_KernelFilter = indirectDiffuseAccumulation.FindKernel("IndirectDiffuseFilterH");
// Horizontal pass of the bilateral filter
cmd.SetComputeIntParam(indirectDiffuseAccumulation, HDShaderIDs._RaytracingDenoiseRadius, rtEnvironement.indirectDiffuseFilterRadius);
cmd.SetComputeTextureParam(indirectDiffuseAccumulation, m_KernelFilter, HDShaderIDs._DenoiseInputTexture, indirectDiffuseHistory);
cmd.SetComputeTextureParam(indirectDiffuseAccumulation, m_KernelFilter, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetComputeTextureParam(indirectDiffuseAccumulation, m_KernelFilter, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer());
cmd.SetComputeTextureParam(indirectDiffuseAccumulation, m_KernelFilter, HDShaderIDs._DenoiseOutputTextureRW, m_DenoiseBuffer0);
cmd.DispatchCompute(indirectDiffuseAccumulation, m_KernelFilter, numTilesX, numTilesY, 1);
m_KernelFilter = indirectDiffuseAccumulation.FindKernel("IndirectDiffuseFilterV");
// Horizontal pass of the bilateral filter
cmd.SetComputeIntParam(indirectDiffuseAccumulation, HDShaderIDs._RaytracingDenoiseRadius, rtEnvironement.indirectDiffuseFilterRadius);
cmd.SetComputeTextureParam(indirectDiffuseAccumulation, m_KernelFilter, HDShaderIDs._DenoiseInputTexture, m_DenoiseBuffer0);
cmd.SetComputeTextureParam(indirectDiffuseAccumulation, m_KernelFilter, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetComputeTextureParam(indirectDiffuseAccumulation, m_KernelFilter, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer());
cmd.SetComputeTextureParam(indirectDiffuseAccumulation, m_KernelFilter, HDShaderIDs._DenoiseOutputTextureRW, m_IndirectDiffuseTexture);
cmd.DispatchCompute(indirectDiffuseAccumulation, m_KernelFilter, numTilesX, numTilesY, 1);
}
break;
}
// If we are in deferred mode, we need to make sure to add the indirect diffuse (that we intentionally ignored during the gbuffer pass)
// Note that this discards the texture/object ambient occlusion. But we consider that okay given that the raytraced indirect diffuse
// is a physically correct evaluation of that quantity
if (hdCamera.frameSettings.litShaderMode == LitShaderMode.Deferred)
{
int indirectDiffuseKernel = indirectDiffuseAccumulation.FindKernel("IndirectDiffuseAccumulation");
// Bind the source texture
cmd.SetComputeTextureParam(indirectDiffuseAccumulation, indirectDiffuseKernel, HDShaderIDs._IndirectDiffuseTexture, m_IndirectDiffuseTexture);
// Bind the output texture
cmd.SetComputeTextureParam(indirectDiffuseAccumulation, indirectDiffuseKernel, HDShaderIDs._GBufferTexture[0], m_GBufferManager.GetBuffer(0));
cmd.SetComputeTextureParam(indirectDiffuseAccumulation, indirectDiffuseKernel, HDShaderIDs._GBufferTexture[3], m_GBufferManager.GetBuffer(3));
// Evaluate the dispatch parameters
int areaTileSize = 8;
int numTilesX = (widthResolution + (areaTileSize - 1)) / areaTileSize;
int numTilesY = (heightResolution + (areaTileSize - 1)) / areaTileSize;
// Add the indirect diffuse to the gbuffer
cmd.DispatchCompute(indirectDiffuseAccumulation, indirectDiffuseKernel, numTilesX, numTilesY, 1);
}
return(true);
}
private void DenoiseAO(CommandBuffer cmd, HDCamera camera, SharedRTManager sharedRTManager)
{
var settings = VolumeManager.instance.stack.GetComponent <AmbientOcclusion>();
if (!IsActive(camera, settings))
{
return;
}
var cs = m_Resources.shaders.GTAODenoiseCS;
Vector4 aoBufferInfo;
Vector2 runningRes;
if (m_RunningFullRes)
{
runningRes = new Vector2(camera.actualWidth, camera.actualHeight);
aoBufferInfo = new Vector4(camera.actualWidth, camera.actualHeight, 1.0f / camera.actualWidth, 1.0f / camera.actualHeight);
}
else
{
runningRes = new Vector2(camera.actualWidth, camera.actualHeight) * 0.5f;
aoBufferInfo = new Vector4(camera.actualWidth * 0.5f, camera.actualHeight * 0.5f, 2.0f / camera.actualWidth, 2.0f / camera.actualHeight);
}
Vector4 aoParams0 = new Vector4(
settings.fullResolution.value ? 0.0f : 1.0f,
0, // not needed
settings.radius.value,
settings.stepCount.value
);
Vector4 aoParams1 = new Vector4(
settings.intensity.value,
1.0f / (settings.radius.value * settings.radius.value),
0,
0
);
cmd.SetComputeVectorParam(cs, HDShaderIDs._AOParams0, aoParams0);
cmd.SetComputeVectorParam(cs, HDShaderIDs._AOParams1, aoParams1);
cmd.SetComputeVectorParam(cs, HDShaderIDs._AOBufferSize, aoBufferInfo);
// Spatial
using (new ProfilingSample(cmd, "Spatial Denoise GTAO", CustomSamplerId.ResolveSSAO.GetSampler()))
{
var kernel = cs.FindKernel("GTAODenoise_Spatial");
cmd.SetComputeTextureParam(cs, kernel, HDShaderIDs._AOPackedData, m_PackedDataTex);
cmd.SetComputeTextureParam(cs, kernel, HDShaderIDs._AOPackedBlurred, m_PackedDataBlurred);
cmd.SetComputeTextureParam(cs, kernel, HDShaderIDs._OcclusionTexture, m_AmbientOcclusionTex);
const int groupSizeX = 8;
const int groupSizeY = 8;
int threadGroupX = ((int)runningRes.x + (groupSizeX - 1)) / groupSizeX;
int threadGroupY = ((int)runningRes.y + (groupSizeY - 1)) / groupSizeY;
cmd.DispatchCompute(cs, kernel, threadGroupX, threadGroupY, camera.viewCount);
}
RTHandleSystem.RTHandle Allocator(string id, int frameIndex, RTHandleSystem rtHandleSystem)
{
return(rtHandleSystem.Alloc(Vector2.one * (m_RunningFullRes ? 1.0f : 0.5f), TextureXR.slices, filterMode: FilterMode.Point, colorFormat: GraphicsFormat.R32_UInt, dimension: TextureXR.dimension, useDynamicScale: true, enableRandomWrite: true, name: string.Format("AO Packed history_{0}", frameIndex)));
}
var currentHistory = camera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.AmbientOcclusion) ??
camera.AllocHistoryFrameRT((int)HDCameraFrameHistoryType.AmbientOcclusion, Allocator, 2);
var historyOutput = camera.GetPreviousFrameRT((int)HDCameraFrameHistoryType.AmbientOcclusion);
if (!m_HistoryReady)
{
var kernel = cs.FindKernel("GTAODenoise_CopyHistory");
cmd.SetComputeTextureParam(cs, kernel, HDShaderIDs._InputTexture, m_PackedDataTex);
cmd.SetComputeTextureParam(cs, kernel, HDShaderIDs._OutputTexture, currentHistory);
const int groupSizeX = 8;
const int groupSizeY = 8;
int threadGroupX = ((int)runningRes.x + (groupSizeX - 1)) / groupSizeX;
int threadGroupY = ((int)runningRes.y + (groupSizeY - 1)) / groupSizeY;
cmd.DispatchCompute(cs, kernel, threadGroupX, threadGroupY, camera.viewCount);
m_HistoryReady = true;
}
// Temporal
using (new ProfilingSample(cmd, "Temporal GTAO", CustomSamplerId.ResolveSSAO.GetSampler()))
{
int kernel;
if (m_RunningFullRes)
{
kernel = cs.FindKernel("GTAODenoise_Temporal_FullRes");
}
else
{
kernel = cs.FindKernel("GTAODenoise_Temporal");
}
cmd.SetComputeTextureParam(cs, kernel, HDShaderIDs._AOPackedData, m_PackedDataTex);
cmd.SetComputeTextureParam(cs, kernel, HDShaderIDs._AOPackedBlurred, m_PackedDataBlurred);
cmd.SetComputeTextureParam(cs, kernel, HDShaderIDs._AOPackedHistory, currentHistory);
cmd.SetComputeTextureParam(cs, kernel, HDShaderIDs._AOOutputHistory, historyOutput);
if (m_RunningFullRes)
{
cmd.SetComputeTextureParam(cs, kernel, HDShaderIDs._OcclusionTexture, m_AmbientOcclusionTex);
}
else
{
cmd.SetComputeTextureParam(cs, kernel, HDShaderIDs._OcclusionTexture, m_FinalHalfRes);
}
const int groupSizeX = 8;
const int groupSizeY = 8;
int threadGroupX = ((int)runningRes.x + (groupSizeX - 1)) / groupSizeX;
int threadGroupY = ((int)runningRes.y + (groupSizeY - 1)) / groupSizeY;
cmd.DispatchCompute(cs, kernel, threadGroupX, threadGroupY, camera.viewCount);
}
// Need upsample
if (!m_RunningFullRes)
{
using (new ProfilingSample(cmd, "Upsample GTAO", CustomSamplerId.ResolveSSAO.GetSampler()))
{
cs = m_Resources.shaders.GTAOUpsampleCS;
var kernel = cs.FindKernel("AOUpsample");
cmd.SetComputeVectorParam(cs, HDShaderIDs._AOParams0, aoParams0);
cmd.SetComputeVectorParam(cs, HDShaderIDs._AOParams1, aoParams1);
cmd.SetComputeVectorParam(cs, HDShaderIDs._AOBufferSize, aoBufferInfo);
cmd.SetComputeTextureParam(cs, kernel, HDShaderIDs._AOPackedData, m_FinalHalfRes);
cmd.SetComputeTextureParam(cs, kernel, HDShaderIDs._OcclusionTexture, m_AmbientOcclusionTex);
const int groupSizeX = 8;
const int groupSizeY = 8;
int threadGroupX = ((int)camera.actualWidth + (groupSizeX - 1)) / groupSizeX;
int threadGroupY = ((int)camera.actualHeight + (groupSizeY - 1)) / groupSizeY;
cmd.DispatchCompute(cs, kernel, threadGroupX, threadGroupY, camera.viewCount);
}
}
}
public void RenderReflectionsT1(HDCamera hdCamera, CommandBuffer cmd, RTHandleSystem.RTHandle outputTexture, ScriptableRenderContext renderContext, int frameCount)
{
// First thing to check is: Do we have a valid ray-tracing environment?
HDRaytracingEnvironment rtEnvironment = m_RaytracingManager.CurrentEnvironment();
HDRenderPipeline renderPipeline = m_RaytracingManager.GetRenderPipeline();
BlueNoise blueNoise = m_RaytracingManager.GetBlueNoiseManager();
ComputeShader reflectionFilter = m_PipelineAsset.renderPipelineRayTracingResources.reflectionBilateralFilterCS;
RayTracingShader reflectionShader = m_PipelineAsset.renderPipelineRayTracingResources.reflectionRaytracing;
bool invalidState = rtEnvironment == null || blueNoise == null ||
reflectionFilter == null || reflectionShader == null ||
m_PipelineResources.textures.owenScrambledTex == null || m_PipelineResources.textures.scramblingTex == null;
// If no acceleration structure available, end it now
if (invalidState)
{
return;
}
var settings = VolumeManager.instance.stack.GetComponent <ScreenSpaceReflection>();
LightCluster lightClusterSettings = VolumeManager.instance.stack.GetComponent <LightCluster>();
// Grab the acceleration structures and the light cluster to use
RayTracingAccelerationStructure accelerationStructure = m_RaytracingManager.RequestAccelerationStructure(rtEnvironment.reflLayerMask);
HDRaytracingLightCluster lightCluster = m_RaytracingManager.RequestLightCluster(rtEnvironment.reflLayerMask);
// Compute the actual resolution that is needed base on the quality
string targetRayGen = m_RayGenHalfResName;
// Define the shader pass to use for the reflection pass
cmd.SetRayTracingShaderPass(reflectionShader, "IndirectDXR");
// Set the acceleration structure for the pass
cmd.SetRayTracingAccelerationStructure(reflectionShader, HDShaderIDs._RaytracingAccelerationStructureName, accelerationStructure);
// Inject the ray-tracing sampling data
cmd.SetRayTracingTextureParam(reflectionShader, HDShaderIDs._OwenScrambledTexture, m_PipelineResources.textures.owenScrambledTex);
cmd.SetRayTracingTextureParam(reflectionShader, HDShaderIDs._ScramblingTexture, m_PipelineResources.textures.scramblingTex);
// Global reflection parameters
cmd.SetRayTracingFloatParams(reflectionShader, HDShaderIDs._RaytracingIntensityClamp, settings.clampValue.value);
cmd.SetRayTracingFloatParams(reflectionShader, HDShaderIDs._RaytracingReflectionMinSmoothness, settings.minSmoothness.value);
cmd.SetRayTracingIntParams(reflectionShader, HDShaderIDs._RaytracingReflectSky, settings.reflectSky.value ? 1 : 0);
// Inject the ray generation data
cmd.SetGlobalFloat(HDShaderIDs._RaytracingRayBias, rtEnvironment.rayBias);
cmd.SetGlobalFloat(HDShaderIDs._RaytracingRayMaxLength, settings.rayLength.value);
cmd.SetRayTracingIntParams(reflectionShader, HDShaderIDs._RaytracingNumSamples, settings.numSamples.value);
int frameIndex = hdCamera.IsTAAEnabled() ? hdCamera.taaFrameIndex : (int)frameCount % 8;
cmd.SetGlobalInt(HDShaderIDs._RaytracingFrameIndex, frameIndex);
// Set the data for the ray generation
cmd.SetRayTracingTextureParam(reflectionShader, HDShaderIDs._SsrLightingTextureRW, m_LightingTexture);
cmd.SetRayTracingTextureParam(reflectionShader, HDShaderIDs._SsrHitPointTexture, m_HitPdfTexture);
cmd.SetRayTracingTextureParam(reflectionShader, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetRayTracingTextureParam(reflectionShader, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer());
// Set ray count tex
cmd.SetRayTracingIntParam(reflectionShader, HDShaderIDs._RayCountEnabled, m_RaytracingManager.rayCountManager.RayCountIsEnabled());
cmd.SetRayTracingTextureParam(reflectionShader, HDShaderIDs._RayCountTexture, m_RaytracingManager.rayCountManager.rayCountTexture);
// Compute the pixel spread value
float pixelSpreadAngle = Mathf.Atan(2.0f * Mathf.Tan(hdCamera.camera.fieldOfView * Mathf.PI / 360.0f) / Mathf.Min(hdCamera.actualWidth, hdCamera.actualHeight));
cmd.SetRayTracingFloatParam(reflectionShader, HDShaderIDs._RaytracingPixelSpreadAngle, pixelSpreadAngle);
// LightLoop data
cmd.SetGlobalBuffer(HDShaderIDs._RaytracingLightCluster, lightCluster.GetCluster());
cmd.SetGlobalBuffer(HDShaderIDs._LightDatasRT, lightCluster.GetLightDatas());
cmd.SetGlobalVector(HDShaderIDs._MinClusterPos, lightCluster.GetMinClusterPos());
cmd.SetGlobalVector(HDShaderIDs._MaxClusterPos, lightCluster.GetMaxClusterPos());
cmd.SetGlobalInt(HDShaderIDs._LightPerCellCount, lightClusterSettings.maxNumLightsPercell.value);
cmd.SetGlobalInt(HDShaderIDs._PunctualLightCountRT, lightCluster.GetPunctualLightCount());
cmd.SetGlobalInt(HDShaderIDs._AreaLightCountRT, lightCluster.GetAreaLightCount());
// Note: Just in case, we rebind the directional light data (in case they were not)
cmd.SetGlobalBuffer(HDShaderIDs._DirectionalLightDatas, renderPipeline.m_LightLoopLightData.directionalLightData);
cmd.SetGlobalInt(HDShaderIDs._DirectionalLightCount, renderPipeline.m_lightList.directionalLights.Count);
// Evaluate the clear coat mask texture based on the lit shader mode
RenderTargetIdentifier clearCoatMaskTexture = hdCamera.frameSettings.litShaderMode == LitShaderMode.Deferred ? m_GbufferManager.GetBuffersRTI()[2] : TextureXR.GetBlackTexture();
cmd.SetRayTracingTextureParam(reflectionShader, HDShaderIDs._SsrClearCoatMaskTexture, clearCoatMaskTexture);
// Set the data for the ray miss
cmd.SetRayTracingTextureParam(reflectionShader, HDShaderIDs._SkyTexture, m_SkyManager.skyReflection);
// Compute the actual resolution that is needed base on the quality
uint widthResolution = (uint)hdCamera.actualWidth / 2;
uint heightResolution = (uint)hdCamera.actualHeight / 2;
// Force to disable specular lighting
cmd.SetGlobalInt(HDShaderIDs._EnableSpecularLighting, 0);
// Run the computation
cmd.DispatchRays(reflectionShader, targetRayGen, widthResolution, heightResolution, 1);
// Restore the previous state of specular lighting
cmd.SetGlobalInt(HDShaderIDs._EnableSpecularLighting, hdCamera.frameSettings.IsEnabled(FrameSettingsField.SpecularLighting) ? 1 : 0);
using (new ProfilingSample(cmd, "Filter Reflection", CustomSamplerId.RaytracingFilterReflection.GetSampler()))
{
// Fetch the right filter to use
int currentKernel = reflectionFilter.FindKernel("RaytracingReflectionFilter");
// Inject all the parameters for the compute
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._SsrLightingTextureRW, m_LightingTexture);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._SsrHitPointTexture, m_HitPdfTexture);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer());
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, "_NoiseTexture", blueNoise.textureArray16RGB);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, "_VarianceTexture", m_VarianceBuffer);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, "_MinColorRangeTexture", m_MinBoundBuffer);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, "_MaxColorRangeTexture", m_MaxBoundBuffer);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, "_RaytracingReflectionTexture", outputTexture);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._ScramblingTexture, m_PipelineResources.textures.scramblingTex);
cmd.SetComputeIntParam(reflectionFilter, HDShaderIDs._SpatialFilterRadius, settings.spatialFilterRadius.value);
cmd.SetComputeFloatParam(reflectionFilter, HDShaderIDs._RaytracingReflectionMinSmoothness, settings.minSmoothness.value);
// Texture dimensions
int texWidth = outputTexture.rt.width;
int texHeight = outputTexture.rt.height;
// Evaluate the dispatch parameters
int areaTileSize = 8;
int numTilesXHR = (texWidth + (areaTileSize - 1)) / areaTileSize;
int numTilesYHR = (texHeight + (areaTileSize - 1)) / areaTileSize;
// Bind the right texture for clear coat support
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._SsrClearCoatMaskTexture, clearCoatMaskTexture);
// Compute the texture
cmd.DispatchCompute(reflectionFilter, currentKernel, numTilesXHR, numTilesYHR, 1);
int numTilesXFR = (texWidth + (areaTileSize - 1)) / areaTileSize;
int numTilesYFR = (texHeight + (areaTileSize - 1)) / areaTileSize;
RTHandleSystem.RTHandle history = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.RaytracedReflection)
?? hdCamera.AllocHistoryFrameRT((int)HDCameraFrameHistoryType.RaytracedReflection, ReflectionHistoryBufferAllocatorFunction, 1);
// Fetch the right filter to use
currentKernel = reflectionFilter.FindKernel("TemporalAccumulationFilter");
cmd.SetComputeFloatParam(reflectionFilter, HDShaderIDs._TemporalAccumuationWeight, settings.temporalAccumulationWeight.value);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._AccumulatedFrameTexture, history);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._CurrentFrameTexture, outputTexture);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, "_MinColorRangeTexture", m_MinBoundBuffer);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, "_MaxColorRangeTexture", m_MaxBoundBuffer);
cmd.DispatchCompute(reflectionFilter, currentKernel, numTilesXFR, numTilesYFR, 1);
}
}
public void RenderAO(HDCamera hdCamera, CommandBuffer cmd, RTHandleSystem.RTHandle outputTexture, ScriptableRenderContext renderContext, int frameCount)
{
// Let's check all the resources
HDRaytracingEnvironment rtEnvironment = m_RaytracingManager.CurrentEnvironment();
RayTracingShader aoShader = m_PipelineRayTracingResources.aoRaytracing;
var aoSettings = VolumeManager.instance.stack.GetComponent <AmbientOcclusion>();
// Check if the state is valid for evaluating ambient occlusion
bool invalidState = rtEnvironment == null ||
aoShader == null ||
m_PipelineResources.textures.owenScrambledTex == null || m_PipelineResources.textures.scramblingTex == null;
// If any of the previous requirements is missing, the effect is not requested or no acceleration structure, set the default one and leave right away
if (invalidState)
{
SetDefaultAmbientOcclusionTexture(cmd);
return;
}
// Grab the acceleration structure for the target camera
RayTracingAccelerationStructure accelerationStructure = m_RaytracingManager.RequestAccelerationStructure(rtEnvironment.aoLayerMask);
// Define the shader pass to use for the reflection pass
cmd.SetRayTracingShaderPass(aoShader, "VisibilityDXR");
// Set the acceleration structure for the pass
cmd.SetRayTracingAccelerationStructure(aoShader, HDShaderIDs._RaytracingAccelerationStructureName, accelerationStructure);
// Inject the ray-tracing sampling data
cmd.SetRayTracingTextureParam(aoShader, HDShaderIDs._OwenScrambledTexture, m_PipelineResources.textures.owenScrambledTex);
cmd.SetRayTracingTextureParam(aoShader, HDShaderIDs._ScramblingTexture, m_PipelineResources.textures.scramblingTex);
// Inject the ray generation data
cmd.SetRayTracingFloatParams(aoShader, HDShaderIDs._RaytracingRayBias, rtEnvironment.rayBias);
cmd.SetRayTracingFloatParams(aoShader, HDShaderIDs._RaytracingRayMaxLength, aoSettings.rayLength.value);
cmd.SetRayTracingIntParams(aoShader, HDShaderIDs._RaytracingNumSamples, aoSettings.numSamples.value);
// Set the data for the ray generation
cmd.SetRayTracingTextureParam(aoShader, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetRayTracingTextureParam(aoShader, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer());
int frameIndex = hdCamera.IsTAAEnabled() ? hdCamera.taaFrameIndex : (int)frameCount % 8;
cmd.SetGlobalInt(HDShaderIDs._RaytracingFrameIndex, frameIndex);
// Value used to scale the ao intensity
cmd.SetRayTracingFloatParam(aoShader, HDShaderIDs._RaytracingAOIntensity, aoSettings.intensity.value);
cmd.SetRayTracingIntParam(aoShader, HDShaderIDs._RayCountEnabled, m_RaytracingManager.rayCountManager.RayCountIsEnabled());
cmd.SetRayTracingTextureParam(aoShader, HDShaderIDs._RayCountTexture, m_RaytracingManager.rayCountManager.rayCountTexture);
// Set the output textures
cmd.SetRayTracingTextureParam(aoShader, HDShaderIDs._AmbientOcclusionTextureRW, m_IntermediateBuffer);
cmd.SetRayTracingTextureParam(aoShader, HDShaderIDs._RaytracingVSNormalTexture, m_ViewSpaceNormalBuffer);
// Run the computation
cmd.DispatchRays(aoShader, m_RayGenShaderName, (uint)hdCamera.actualWidth, (uint)hdCamera.actualHeight, 1);
using (new ProfilingSample(cmd, "Filter Reflection", CustomSamplerId.RaytracingAmbientOcclusion.GetSampler()))
{
if (aoSettings.enableFilter.value)
{
// Grab the history buffer
RTHandleSystem.RTHandle ambientOcclusionHistory = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.RaytracedAmbientOcclusion)
?? hdCamera.AllocHistoryFrameRT((int)HDCameraFrameHistoryType.RaytracedAmbientOcclusion, AmbientOcclusionHistoryBufferAllocatorFunction, 1);
// Apply the simple denoiser
HDSimpleDenoiser simpleDenoiser = m_RaytracingManager.GetSimpleDenoiser();
simpleDenoiser.DenoiseBuffer(cmd, hdCamera, m_IntermediateBuffer, ambientOcclusionHistory, outputTexture, aoSettings.filterRadius.value, singleChannel: true);
}
else
{
HDUtils.BlitCameraTexture(cmd, m_IntermediateBuffer, outputTexture);
}
}
// Bind the textures and the params
cmd.SetGlobalTexture(HDShaderIDs._AmbientOcclusionTexture, outputTexture);
cmd.SetGlobalVector(HDShaderIDs._AmbientOcclusionParam, new Vector4(0f, 0f, 0f, VolumeManager.instance.stack.GetComponent <AmbientOcclusion>().directLightingStrength.value));
// TODO: All the push-debug stuff should be centralized somewhere
(RenderPipelineManager.currentPipeline as HDRenderPipeline).PushFullScreenDebugTexture(hdCamera, cmd, outputTexture, FullScreenDebugMode.SSAO);
}
public bool RenderAreaShadows(HDCamera hdCamera, CommandBuffer cmd, ScriptableRenderContext renderContext, uint frameCount)
{
// NOTE: Here we cannot clear the area shadow texture because it is a texture array. So we need to bind it and make sure no material will try to read it in the shaders
BindShadowTexture(cmd);
// Let's check all the resources and states to see if we should render the effect
HDRaytracingEnvironment rtEnvironement = m_RaytracingManager.CurrentEnvironment();
RaytracingShader shadowRaytrace = m_PipelineAsset.renderPipelineResources.shaders.areaShadowsRaytracingRT;
ComputeShader shadowsCompute = m_PipelineAsset.renderPipelineResources.shaders.areaShadowRaytracingCS;
ComputeShader shadowFilter = m_PipelineAsset.renderPipelineResources.shaders.areaShadowFilterCS;
// Make sure everything is valid
bool invalidState = rtEnvironement == null || rtEnvironement.raytracedShadows == false ||
hdCamera.frameSettings.litShaderMode != LitShaderMode.Deferred ||
shadowRaytrace == null || shadowsCompute == null || shadowFilter == null ||
m_PipelineResources.textures.owenScrambledTex == null || m_PipelineResources.textures.scramblingTex == null;
// If invalid state or ray-tracing acceleration structure, we stop right away
if (invalidState)
{
return(false);
}
// Grab the TAA history buffers (SN/UN and Analytic value)
RTHandleSystem.RTHandle areaShadowHistoryArray = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.RaytracedAreaShadow)
?? hdCamera.AllocHistoryFrameRT((int)HDCameraFrameHistoryType.RaytracedAreaShadow, AreaShadowHistoryBufferAllocatorFunction, 1);
RTHandleSystem.RTHandle areaAnalyticHistoryArray = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.RaytracedAreaAnalytic)
?? hdCamera.AllocHistoryFrameRT((int)HDCameraFrameHistoryType.RaytracedAreaAnalytic, AreaAnalyticHistoryBufferAllocatorFunction, 1);
// Grab the acceleration structure for the target camera
RaytracingAccelerationStructure accelerationStructure = m_RaytracingManager.RequestAccelerationStructure(rtEnvironement.shadowLayerMask);
// Define the shader pass to use for the reflection pass
cmd.SetRaytracingShaderPass(shadowRaytrace, "VisibilityDXR");
// Set the acceleration structure for the pass
cmd.SetRaytracingAccelerationStructure(shadowRaytrace, HDShaderIDs._RaytracingAccelerationStructureName, accelerationStructure);
// Inject the ray-tracing sampling data
cmd.SetGlobalTexture(HDShaderIDs._OwenScrambledTexture, m_PipelineResources.textures.owenScrambledTex);
cmd.SetGlobalTexture(HDShaderIDs._ScramblingTexture, m_PipelineResources.textures.scramblingTex);
int frameIndex = hdCamera.IsTAAEnabled() ? hdCamera.taaFrameIndex : (int)frameCount % 8;
cmd.SetGlobalInt(HDShaderIDs._RaytracingFrameIndex, frameIndex);
// Grab the Filtering Kernels
int copyTAAHistoryKernel = shadowFilter.FindKernel("AreaShadowCopyTAAHistory");
int applyTAAKernel = shadowFilter.FindKernel("AreaShadowApplyTAA");
int updateAnalyticHistory = shadowFilter.FindKernel("AreaAnalyticHistoryUpdate");
int estimateNoiseKernel = shadowFilter.FindKernel("AreaShadowEstimateNoise");
int firstDenoiseKernel = shadowFilter.FindKernel("AreaShadowDenoiseFirstPass");
int secondDenoiseKernel = shadowFilter.FindKernel("AreaShadowDenoiseSecondPass");
// 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;
// Inject the ray generation data
cmd.SetGlobalFloat(HDShaderIDs._RaytracingRayBias, rtEnvironement.rayBias);
int numLights = m_LightLoop.m_lightList.lights.Count;
for (int lightIdx = 0; lightIdx < numLights; ++lightIdx)
{
// If this is not a rectangular area light or it won't have shadows, skip it
if (m_LightLoop.m_lightList.lights[lightIdx].lightType != GPULightType.Rectangle || m_LightLoop.m_lightList.lights[lightIdx].rayTracedAreaShadowIndex == -1)
{
continue;
}
using (new ProfilingSample(cmd, "Raytrace Area Shadow", CustomSamplerId.RaytracingShadowIntegration.GetSampler()))
{
LightData currentLight = m_LightLoop.m_lightList.lights[lightIdx];
// We need to build the world to area light matrix
worldToLocalArea.SetColumn(0, currentLight.right);
worldToLocalArea.SetColumn(1, currentLight.up);
worldToLocalArea.SetColumn(2, currentLight.forward);
// Compensate the relative rendering if active
Vector3 lightPositionWS = currentLight.positionRWS;
if (ShaderConfig.s_CameraRelativeRendering != 0)
{
lightPositionWS += hdCamera.camera.transform.position;
}
worldToLocalArea.SetColumn(3, lightPositionWS);
worldToLocalArea.m33 = 1.0f;
worldToLocalArea = worldToLocalArea.inverse;
// 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
if (rtEnvironement.splitIntegration)
{
int shadowComputeKernel = shadowsCompute.FindKernel("RaytracingAreaShadowPrepass");
// This pass evaluates the analytic value and the generates and outputs the first sample
cmd.SetComputeBufferParam(shadowsCompute, shadowComputeKernel, HDShaderIDs._LightDatas, m_LightLoop.lightDatas);
cmd.SetComputeIntParam(shadowsCompute, HDShaderIDs._RaytracingTargetAreaLight, lightIdx);
cmd.SetComputeIntParam(shadowsCompute, HDShaderIDs._RaytracingNumSamples, rtEnvironement.shadowNumSamples);
cmd.SetComputeMatrixParam(shadowsCompute, HDShaderIDs._RaytracingAreaWorldToLocal, worldToLocalArea);
cmd.SetComputeTextureParam(shadowsCompute, shadowComputeKernel, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetComputeTextureParam(shadowsCompute, shadowComputeKernel, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer());
cmd.SetComputeTextureParam(shadowsCompute, shadowComputeKernel, HDShaderIDs._GBufferTexture[0], m_GbufferManager.GetBuffer(0));
cmd.SetComputeTextureParam(shadowsCompute, shadowComputeKernel, HDShaderIDs._GBufferTexture[1], m_GbufferManager.GetBuffer(1));
cmd.SetComputeTextureParam(shadowsCompute, shadowComputeKernel, HDShaderIDs._GBufferTexture[2], m_GbufferManager.GetBuffer(2));
cmd.SetComputeTextureParam(shadowsCompute, shadowComputeKernel, HDShaderIDs._GBufferTexture[3], m_GbufferManager.GetBuffer(3));
cmd.SetComputeTextureParam(shadowsCompute, shadowComputeKernel, HDShaderIDs._AreaCookieTextures, m_LightLoop.areaLightCookieManager.GetTexCache());
cmd.SetComputeTextureParam(shadowsCompute, shadowComputeKernel, HDShaderIDs._RaytracedAreaShadowIntegration, m_DenoiseBuffer0);
cmd.SetComputeTextureParam(shadowsCompute, shadowComputeKernel, HDShaderIDs._RaytracedAreaShadowSample, m_DenoiseBuffer1);
cmd.SetComputeTextureParam(shadowsCompute, shadowComputeKernel, HDShaderIDs._RaytracingDirectionBuffer, m_RaytracingDirectionBuffer);
cmd.SetComputeTextureParam(shadowsCompute, shadowComputeKernel, HDShaderIDs._RaytracingDistanceBuffer, m_RaytracingDistanceBuffer);
cmd.SetComputeTextureParam(shadowsCompute, shadowComputeKernel, HDShaderIDs._AnalyticProbBuffer, m_AnalyticProbBuffer);
cmd.DispatchCompute(shadowsCompute, shadowComputeKernel, numTilesX, numTilesY, 1);
// This pass will use the previously generated sample and add it to the integration buffer
cmd.SetRaytracingBufferParam(shadowRaytrace, m_RayGenShadowSingleName, HDShaderIDs._LightDatas, m_LightLoop.lightDatas);
cmd.SetRaytracingTextureParam(shadowRaytrace, m_RayGenShadowSingleName, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetRaytracingTextureParam(shadowRaytrace, m_RayGenShadowSingleName, HDShaderIDs._RaytracedAreaShadowSample, m_DenoiseBuffer1);
cmd.SetRaytracingTextureParam(shadowRaytrace, m_RayGenShadowSingleName, HDShaderIDs._RaytracedAreaShadowIntegration, m_DenoiseBuffer0);
cmd.SetRaytracingTextureParam(shadowRaytrace, m_RayGenShadowSingleName, HDShaderIDs._RaytracingDirectionBuffer, m_RaytracingDirectionBuffer);
cmd.SetRaytracingTextureParam(shadowRaytrace, m_RayGenShadowSingleName, HDShaderIDs._RaytracingDistanceBuffer, m_RaytracingDistanceBuffer);
cmd.SetRaytracingTextureParam(shadowRaytrace, m_RayGenShadowSingleName, HDShaderIDs._AnalyticProbBuffer, m_AnalyticProbBuffer);
cmd.DispatchRays(shadowRaytrace, m_RayGenShadowSingleName, (uint)hdCamera.actualWidth, (uint)hdCamera.actualHeight, 1);
// Let's do the following samples (if any)
for (int sampleIndex = 1; sampleIndex < rtEnvironement.shadowNumSamples; ++sampleIndex)
{
shadowComputeKernel = shadowsCompute.FindKernel("RaytracingAreaShadowNewSample");
// This pass generates a new sample based on the initial pre-pass
cmd.SetComputeBufferParam(shadowsCompute, shadowComputeKernel, HDShaderIDs._LightDatas, m_LightLoop.lightDatas);
cmd.SetComputeIntParam(shadowsCompute, HDShaderIDs._RaytracingTargetAreaLight, lightIdx);
cmd.SetComputeIntParam(shadowsCompute, HDShaderIDs._RaytracingNumSamples, rtEnvironement.shadowNumSamples);
cmd.SetComputeIntParam(shadowsCompute, HDShaderIDs._RaytracingSampleIndex, sampleIndex);
cmd.SetComputeMatrixParam(shadowsCompute, HDShaderIDs._RaytracingAreaWorldToLocal, worldToLocalArea);
cmd.SetComputeTextureParam(shadowsCompute, shadowComputeKernel, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetComputeTextureParam(shadowsCompute, shadowComputeKernel, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer());
cmd.SetComputeTextureParam(shadowsCompute, shadowComputeKernel, HDShaderIDs._GBufferTexture[0], m_GbufferManager.GetBuffer(0));
cmd.SetComputeTextureParam(shadowsCompute, shadowComputeKernel, HDShaderIDs._GBufferTexture[1], m_GbufferManager.GetBuffer(1));
cmd.SetComputeTextureParam(shadowsCompute, shadowComputeKernel, HDShaderIDs._GBufferTexture[2], m_GbufferManager.GetBuffer(2));
cmd.SetComputeTextureParam(shadowsCompute, shadowComputeKernel, HDShaderIDs._GBufferTexture[3], m_GbufferManager.GetBuffer(3));
cmd.SetComputeTextureParam(shadowsCompute, shadowComputeKernel, HDShaderIDs._AreaCookieTextures, m_LightLoop.areaLightCookieManager.GetTexCache());
cmd.SetComputeTextureParam(shadowsCompute, shadowComputeKernel, HDShaderIDs._RaytracedAreaShadowIntegration, m_DenoiseBuffer0);
cmd.SetComputeTextureParam(shadowsCompute, shadowComputeKernel, HDShaderIDs._RaytracedAreaShadowSample, m_DenoiseBuffer1);
cmd.SetComputeTextureParam(shadowsCompute, shadowComputeKernel, HDShaderIDs._RaytracingDirectionBuffer, m_RaytracingDirectionBuffer);
cmd.SetComputeTextureParam(shadowsCompute, shadowComputeKernel, HDShaderIDs._RaytracingDistanceBuffer, m_RaytracingDistanceBuffer);
cmd.SetComputeTextureParam(shadowsCompute, shadowComputeKernel, HDShaderIDs._AnalyticProbBuffer, m_AnalyticProbBuffer);
cmd.DispatchCompute(shadowsCompute, shadowComputeKernel, numTilesX, numTilesY, 1);
// This pass will use the previously generated sample and add it to the integration buffer
cmd.SetRaytracingBufferParam(shadowRaytrace, m_RayGenShadowSingleName, HDShaderIDs._LightDatas, m_LightLoop.lightDatas);
cmd.SetRaytracingTextureParam(shadowRaytrace, m_RayGenShadowSingleName, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetRaytracingTextureParam(shadowRaytrace, m_RayGenShadowSingleName, HDShaderIDs._RaytracedAreaShadowSample, m_DenoiseBuffer1);
cmd.SetRaytracingTextureParam(shadowRaytrace, m_RayGenShadowSingleName, HDShaderIDs._RaytracedAreaShadowIntegration, m_DenoiseBuffer0);
cmd.SetRaytracingTextureParam(shadowRaytrace, m_RayGenShadowSingleName, HDShaderIDs._RaytracingDirectionBuffer, m_RaytracingDirectionBuffer);
cmd.SetRaytracingTextureParam(shadowRaytrace, m_RayGenShadowSingleName, HDShaderIDs._RaytracingDistanceBuffer, m_RaytracingDistanceBuffer);
cmd.SetRaytracingTextureParam(shadowRaytrace, m_RayGenShadowSingleName, HDShaderIDs._AnalyticProbBuffer, m_AnalyticProbBuffer);
cmd.DispatchRays(shadowRaytrace, m_RayGenShadowSingleName, (uint)hdCamera.actualWidth, (uint)hdCamera.actualHeight, 1);
}
}
else
{
// This pass generates the analytic value and will do the full integration
cmd.SetRaytracingBufferParam(shadowRaytrace, m_RayGenShaderName, HDShaderIDs._LightDatas, m_LightLoop.lightDatas);
cmd.SetRaytracingIntParam(shadowRaytrace, HDShaderIDs._RaytracingTargetAreaLight, lightIdx);
cmd.SetRaytracingIntParam(shadowRaytrace, HDShaderIDs._RaytracingNumSamples, rtEnvironement.shadowNumSamples);
cmd.SetRaytracingMatrixParam(shadowRaytrace, HDShaderIDs._RaytracingAreaWorldToLocal, worldToLocalArea);
cmd.SetRaytracingTextureParam(shadowRaytrace, m_RayGenShaderName, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetRaytracingTextureParam(shadowRaytrace, m_RayGenShaderName, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer());
cmd.SetRaytracingTextureParam(shadowRaytrace, m_RayGenShaderName, HDShaderIDs._GBufferTexture[0], m_GbufferManager.GetBuffer(0));
cmd.SetRaytracingTextureParam(shadowRaytrace, m_RayGenShaderName, HDShaderIDs._GBufferTexture[1], m_GbufferManager.GetBuffer(1));
cmd.SetRaytracingTextureParam(shadowRaytrace, m_RayGenShaderName, HDShaderIDs._GBufferTexture[2], m_GbufferManager.GetBuffer(2));
cmd.SetRaytracingTextureParam(shadowRaytrace, m_RayGenShaderName, HDShaderIDs._GBufferTexture[3], m_GbufferManager.GetBuffer(3));
cmd.SetRaytracingIntParam(shadowRaytrace, HDShaderIDs._RayCountEnabled, m_RaytracingManager.rayCountManager.RayCountIsEnabled());
cmd.SetRaytracingTextureParam(shadowRaytrace, m_RayGenShaderName, HDShaderIDs._RayCountTexture, m_RaytracingManager.rayCountManager.rayCountTexture);
cmd.SetRaytracingTextureParam(shadowRaytrace, m_RayGenShaderName, HDShaderIDs._AreaCookieTextures, m_LightLoop.areaLightCookieManager.GetTexCache());
cmd.SetRaytracingTextureParam(shadowRaytrace, m_RayGenShaderName, HDShaderIDs._AnalyticProbBuffer, m_AnalyticProbBuffer);
cmd.SetRaytracingTextureParam(shadowRaytrace, m_RayGenShaderName, HDShaderIDs._RaytracedAreaShadowIntegration, m_DenoiseBuffer0);
cmd.DispatchRays(shadowRaytrace, m_RayGenShaderName, (uint)hdCamera.actualWidth, (uint)hdCamera.actualHeight, 1);
}
}
using (new ProfilingSample(cmd, "Combine Area Shadow", CustomSamplerId.RaytracingShadowCombination.GetSampler()))
{
// Global parameters
cmd.SetComputeIntParam(shadowFilter, HDShaderIDs._RaytracingDenoiseRadius, rtEnvironement.shadowFilterRadius);
cmd.SetComputeIntParam(shadowFilter, HDShaderIDs._RaytracingShadowSlot, m_LightLoop.m_lightList.lights[lightIdx].rayTracedAreaShadowIndex);
// Given that we can't read and write into the same buffer, we store the current frame value and the history in the denoisebuffer1
cmd.SetComputeTextureParam(shadowFilter, copyTAAHistoryKernel, HDShaderIDs._AreaShadowHistoryRW, areaShadowHistoryArray);
cmd.SetComputeTextureParam(shadowFilter, copyTAAHistoryKernel, HDShaderIDs._DenoiseInputTexture, m_DenoiseBuffer0);
cmd.SetComputeTextureParam(shadowFilter, copyTAAHistoryKernel, HDShaderIDs._DenoiseOutputTextureRW, m_DenoiseBuffer1);
cmd.DispatchCompute(shadowFilter, copyTAAHistoryKernel, numTilesX, numTilesY, 1);
// Apply a vectorized temporal filtering pass and store it back in the denoisebuffer0 with the analytic value in the third channel
var historyScale = new Vector2(hdCamera.actualWidth / (float)areaShadowHistoryArray.rt.width, hdCamera.actualHeight / (float)areaShadowHistoryArray.rt.height);
cmd.SetComputeVectorParam(shadowFilter, HDShaderIDs._ScreenToTargetScaleHistory, historyScale);
cmd.SetComputeTextureParam(shadowFilter, applyTAAKernel, HDShaderIDs._AnalyticProbBuffer, m_AnalyticProbBuffer);
cmd.SetComputeTextureParam(shadowFilter, applyTAAKernel, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetComputeTextureParam(shadowFilter, applyTAAKernel, HDShaderIDs._AnalyticHistoryBuffer, areaAnalyticHistoryArray);
cmd.SetComputeTextureParam(shadowFilter, applyTAAKernel, HDShaderIDs._DenoiseInputTexture, m_DenoiseBuffer1);
cmd.SetComputeTextureParam(shadowFilter, applyTAAKernel, HDShaderIDs._DenoiseOutputTextureRW, m_DenoiseBuffer0);
cmd.SetComputeTextureParam(shadowFilter, applyTAAKernel, HDShaderIDs._AreaShadowHistoryRW, areaShadowHistoryArray);
cmd.DispatchCompute(shadowFilter, applyTAAKernel, numTilesX, numTilesY, 1);
// Now that we do not need it anymore, update the anyltic history
cmd.SetComputeTextureParam(shadowFilter, updateAnalyticHistory, HDShaderIDs._AnalyticHistoryBuffer, areaAnalyticHistoryArray);
cmd.SetComputeTextureParam(shadowFilter, updateAnalyticHistory, HDShaderIDs._AnalyticProbBuffer, m_AnalyticProbBuffer);
cmd.DispatchCompute(shadowFilter, updateAnalyticHistory, numTilesX, numTilesY, 1);
if (rtEnvironement.shadowFilterRadius > 0)
{
// Inject parameters for noise estimation
cmd.SetComputeTextureParam(shadowFilter, estimateNoiseKernel, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetComputeTextureParam(shadowFilter, estimateNoiseKernel, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer());
cmd.SetComputeTextureParam(shadowFilter, estimateNoiseKernel, HDShaderIDs._ScramblingTexture, m_PipelineResources.textures.scramblingTex);
// Noise estimation pre-pass
cmd.SetComputeTextureParam(shadowFilter, estimateNoiseKernel, HDShaderIDs._DenoiseInputTexture, m_DenoiseBuffer0);
cmd.SetComputeTextureParam(shadowFilter, estimateNoiseKernel, HDShaderIDs._DenoiseOutputTextureRW, m_DenoiseBuffer1);
cmd.DispatchCompute(shadowFilter, estimateNoiseKernel, numTilesX, numTilesY, 1);
// Reinject parameters for denoising
cmd.SetComputeTextureParam(shadowFilter, firstDenoiseKernel, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetComputeTextureParam(shadowFilter, firstDenoiseKernel, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer());
cmd.SetComputeTextureParam(shadowFilter, firstDenoiseKernel, HDShaderIDs._AreaShadowTextureRW, m_AreaShadowTextureArray);
// First denoising pass
cmd.SetComputeTextureParam(shadowFilter, firstDenoiseKernel, HDShaderIDs._DenoiseInputTexture, m_DenoiseBuffer1);
cmd.SetComputeTextureParam(shadowFilter, firstDenoiseKernel, HDShaderIDs._DenoiseOutputTextureRW, m_DenoiseBuffer0);
cmd.DispatchCompute(shadowFilter, firstDenoiseKernel, numTilesX, numTilesY, 1);
}
// Reinject parameters for denoising
cmd.SetComputeTextureParam(shadowFilter, secondDenoiseKernel, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetComputeTextureParam(shadowFilter, secondDenoiseKernel, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer());
cmd.SetComputeTextureParam(shadowFilter, secondDenoiseKernel, HDShaderIDs._AreaShadowTextureRW, m_AreaShadowTextureArray);
// Second (and final) denoising pass
cmd.SetComputeTextureParam(shadowFilter, secondDenoiseKernel, HDShaderIDs._DenoiseInputTexture, m_DenoiseBuffer0);
cmd.DispatchCompute(shadowFilter, secondDenoiseKernel, numTilesX, numTilesY, 1);
}
}
// If this is the right debug mode and we have at least one light, write the first shadow to the denoise texture
HDRenderPipeline hdrp = (RenderPipelineManager.currentPipeline as HDRenderPipeline);
if (FullScreenDebugMode.RaytracedAreaShadow == hdrp.m_CurrentDebugDisplaySettings.data.fullScreenDebugMode && numLights > 0)
{
int targetKernel = shadowFilter.FindKernel("WriteShadowTextureDebug");
cmd.SetComputeIntParam(shadowFilter, HDShaderIDs._RaytracingShadowSlot, 0);
cmd.SetComputeTextureParam(shadowFilter, targetKernel, HDShaderIDs._AreaShadowTextureRW, m_AreaShadowTextureArray);
cmd.SetComputeTextureParam(shadowFilter, targetKernel, HDShaderIDs._DenoiseOutputTextureRW, m_DenoiseBuffer0);
cmd.DispatchCompute(shadowFilter, targetKernel, numTilesX, numTilesY, 1);
hdrp.PushFullScreenDebugTexture(hdCamera, cmd, m_DenoiseBuffer0, FullScreenDebugMode.RaytracedAreaShadow);
}
return(true);
}