void BindRayTracedReflectionData(CommandBuffer cmd, HDCamera hdCamera, HDRaytracingEnvironment rtEnvironment, RayTracingShader reflectionShader, ScreenSpaceReflection settings, LightCluster lightClusterSettings) { // Grab the acceleration structures and the light cluster to use RayTracingAccelerationStructure accelerationStructure = m_RayTracingManager.RequestAccelerationStructure(rtEnvironment.reflLayerMask); HDRaytracingLightCluster lightCluster = m_RayTracingManager.RequestLightCluster(rtEnvironment.reflLayerMask); BlueNoise blueNoise = m_RayTracingManager.GetBlueNoiseManager(); // 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); // Global reflection parameters cmd.SetRayTracingFloatParams(reflectionShader, HDShaderIDs._RaytracingIntensityClamp, settings.clampValue.value); cmd.SetRayTracingFloatParams(reflectionShader, HDShaderIDs._RaytracingReflectionMinSmoothness, settings.minSmoothness.value); cmd.SetRayTracingIntParams(reflectionShader, HDShaderIDs._RaytracingIncludeSky, 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.sampleCount.value); int frameIndex = hdCamera.IsTAAEnabled() ? hdCamera.taaFrameIndex : (int)m_FrameCount % 8; cmd.SetRayTracingIntParam(reflectionShader, HDShaderIDs._RaytracingFrameIndex, frameIndex); // Inject the ray-tracing sampling data blueNoise.BindDitheredRNGData8SPP(cmd); // Set the data for the ray generation cmd.SetRayTracingTextureParam(reflectionShader, HDShaderIDs._SsrLightingTextureRW, m_ReflIntermediateTexture0); cmd.SetRayTracingTextureParam(reflectionShader, HDShaderIDs._SsrHitPointTexture, m_ReflIntermediateTexture1); 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.GetRayCountTexture()); // 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.SetGlobalFloat(HDShaderIDs._RaytracingPixelSpreadAngle, pixelSpreadAngle); // Bind the lightLoop data lightCluster.BindLightClusterData(cmd); // Note: Just in case, we rebind the directional light data (in case they were not) cmd.SetGlobalBuffer(HDShaderIDs._DirectionalLightDatas, m_LightLoopLightData.directionalLightData); cmd.SetGlobalInt(HDShaderIDs._DirectionalLightCount, 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 number of bounces for reflections cmd.SetGlobalInt(HDShaderIDs._RaytracingMaxRecursion, settings.bounceCount.value); }
internal int RayTracingFrameIndex(HDCamera hdCamera) { #if UNITY_HDRP_DXR_TESTS_DEFINE if (Application.isPlaying) { return(0); } else #endif return(hdCamera.IsTAAEnabled() ? hdCamera.taaFrameIndex : (int)m_FrameCount % 8); }
void BindRayTracedIndirectDiffuseData(CommandBuffer cmd, HDCamera hdCamera , RayTracingShader indirectDiffuseShader , GlobalIllumination settings, LightCluster lightClusterSettings, RayTracingSettings rtSettings , RTHandle outputLightingBuffer, RTHandle outputHitPointBuffer) { // Grab the acceleration structures and the light cluster to use RayTracingAccelerationStructure accelerationStructure = RequestAccelerationStructure(); HDRaytracingLightCluster lightCluster = RequestLightCluster(); BlueNoise blueNoise = GetBlueNoiseManager(); // 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 blueNoise.BindDitheredRNGData8SPP(cmd); // Inject the ray generation data cmd.SetGlobalFloat(HDShaderIDs._RaytracingRayBias, rtSettings.rayBias.value); cmd.SetGlobalFloat(HDShaderIDs._RaytracingRayMaxLength, settings.rayLength.value); cmd.SetRayTracingIntParams(indirectDiffuseShader, HDShaderIDs._RaytracingNumSamples, settings.sampleCount.value); int frameIndex = hdCamera.IsTAAEnabled() ? hdCamera.taaFrameIndex : (int)m_FrameCount % 8; cmd.SetGlobalInt(HDShaderIDs._RaytracingFrameIndex, frameIndex); // Set the data for the ray generation cmd.SetRayTracingTextureParam(indirectDiffuseShader, HDShaderIDs._IndirectDiffuseTextureRW, outputLightingBuffer); cmd.SetRayTracingTextureParam(indirectDiffuseShader, HDShaderIDs._IndirectDiffuseHitPointTextureRW, outputHitPointBuffer); cmd.SetRayTracingTextureParam(indirectDiffuseShader, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer()); cmd.SetRayTracingTextureParam(indirectDiffuseShader, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer()); // Set the indirect diffuse parameters cmd.SetRayTracingFloatParams(indirectDiffuseShader, HDShaderIDs._RaytracingIntensityClamp, settings.clampValue.value); // Set ray count texture RayCountManager rayCountManager = GetRayCountManager(); cmd.SetRayTracingIntParam(indirectDiffuseShader, HDShaderIDs._RayCountEnabled, rayCountManager.RayCountIsEnabled()); cmd.SetRayTracingTextureParam(indirectDiffuseShader, HDShaderIDs._RayCountTexture, rayCountManager.GetRayCountTexture()); // Compute the pixel spread value cmd.SetRayTracingFloatParam(indirectDiffuseShader, HDShaderIDs._RaytracingPixelSpreadAngle, GetPixelSpreadAngle(hdCamera.camera.fieldOfView, hdCamera.actualWidth, hdCamera.actualHeight)); // LightLoop data lightCluster.BindLightClusterData(cmd); // Set the data for the ray miss cmd.SetRayTracingTextureParam(indirectDiffuseShader, HDShaderIDs._SkyTexture, m_SkyManager.GetSkyReflection(hdCamera)); // Set the number of bounces to 1 cmd.SetGlobalInt(HDShaderIDs._RaytracingMaxRecursion, settings.bounceCount.value); }
public void BindRayTracedIndirectDiffuseData(CommandBuffer cmd, HDCamera hdCamera, HDRaytracingEnvironment rtEnvironment, RayTracingShader indirectDiffuseShader, GlobalIllumination settings, LightCluster lightClusterSettings) { // Grab the acceleration structures and the light cluster to use RayTracingAccelerationStructure accelerationStructure = m_RayTracingManager.RequestAccelerationStructure(rtEnvironment.indirectDiffuseLayerMask); HDRaytracingLightCluster lightCluster = m_RayTracingManager.RequestLightCluster(rtEnvironment.indirectDiffuseLayerMask); // 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.SetGlobalTexture(HDShaderIDs._OwenScrambledRGTexture, m_Asset.renderPipelineResources.textures.owenScrambledRGBATex); cmd.SetGlobalTexture(HDShaderIDs._OwenScrambledTexture, m_Asset.renderPipelineResources.textures.owenScrambled256Tex); cmd.SetGlobalTexture(HDShaderIDs._ScramblingTexture, m_Asset.renderPipelineResources.textures.scramblingTex); // Inject the ray generation data cmd.SetGlobalFloat(HDShaderIDs._RaytracingRayBias, rtEnvironment.rayBias); cmd.SetGlobalFloat(HDShaderIDs._RaytracingRayMaxLength, settings.rayLength.value); cmd.SetRayTracingIntParams(indirectDiffuseShader, HDShaderIDs._RaytracingNumSamples, settings.numSamples.value); int frameIndex = hdCamera.IsTAAEnabled() ? hdCamera.taaFrameIndex : (int)m_FrameCount % 8; cmd.SetGlobalInt(HDShaderIDs._RaytracingFrameIndex, frameIndex); // Set the data for the ray generation cmd.SetRayTracingTextureParam(indirectDiffuseShader, HDShaderIDs._IndirectDiffuseTextureRW, m_IDIntermediateBuffer0); cmd.SetRayTracingTextureParam(indirectDiffuseShader, HDShaderIDs._IndirectDiffuseHitPointTextureRW, m_IDIntermediateBuffer1); cmd.SetRayTracingTextureParam(indirectDiffuseShader, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer()); cmd.SetRayTracingTextureParam(indirectDiffuseShader, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer()); // Set the indirect diffuse parameters cmd.SetRayTracingFloatParams(indirectDiffuseShader, HDShaderIDs._RaytracingIntensityClamp, settings.clampValue.value); // Set ray count texture cmd.SetRayTracingIntParam(indirectDiffuseShader, HDShaderIDs._RayCountEnabled, m_RayTracingManager.rayCountManager.RayCountIsEnabled()); cmd.SetRayTracingTextureParam(indirectDiffuseShader, 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 lightCluster.BindLightClusterData(cmd); // Set the data for the ray miss cmd.SetRayTracingTextureParam(indirectDiffuseShader, HDShaderIDs._SkyTexture, m_SkyManager.skyReflection); // Set the number of bounces to 1 cmd.SetGlobalInt(HDShaderIDs._RaytracingMaxRecursion, settings.numBounces.value); }
public void RenderAO(HDCamera hdCamera, CommandBuffer cmd, RTHandle outputTexture, ScriptableRenderContext renderContext, int frameCount) { // Let's check all the resources HDRaytracingEnvironment rtEnvironment = m_RaytracingManager.CurrentEnvironment(); BlueNoise blueNoise = m_RaytracingManager.GetBlueNoiseManager(); // Check if the state is valid for evaluating ambient occlusion bool invalidState = rtEnvironment == 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; } RayTracingShader aoShader = m_PipelineRayTracingResources.aoRaytracing; var aoSettings = VolumeManager.instance.stack.GetComponent <AmbientOcclusion>(); // 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 generation data cmd.SetRayTracingFloatParams(aoShader, HDShaderIDs._RaytracingRayBias, rtEnvironment.rayBias); cmd.SetRayTracingFloatParams(aoShader, HDShaderIDs._RaytracingRayMaxLength, aoSettings.rayLength.value); cmd.SetRayTracingIntParams(aoShader, HDShaderIDs._RaytracingNumSamples, aoSettings.sampleCount.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); // Inject the ray-tracing sampling data blueNoise.BindDitheredRNGData8SPP(cmd); // 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.GetRayCountTexture()); // Set the output textures cmd.SetRayTracingTextureParam(aoShader, HDShaderIDs._AmbientOcclusionTextureRW, m_AOIntermediateBuffer0); // Run the computation cmd.DispatchRays(aoShader, m_RayGenShaderName, (uint)hdCamera.actualWidth, (uint)hdCamera.actualHeight, (uint)hdCamera.viewCount); using (new ProfilingSample(cmd, "Filter Ambient Occlusion", CustomSamplerId.RaytracingAmbientOcclusion.GetSampler())) { if (aoSettings.denoise.value) { // Grab the history buffer RTHandle ambientOcclusionHistory = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.RaytracedAmbientOcclusion) ?? hdCamera.AllocHistoryFrameRT((int)HDCameraFrameHistoryType.RaytracedAmbientOcclusion, AmbientOcclusionHistoryBufferAllocatorFunction, 1); // Apply the temporal denoiser HDTemporalFilter temporalFilter = m_RaytracingManager.GetTemporalFilter(); temporalFilter.DenoiseBuffer(cmd, hdCamera, m_AOIntermediateBuffer0, ambientOcclusionHistory, m_AOIntermediateBuffer1); // Apply the diffuse denoiser HDDiffuseDenoiser diffuseDenoiser = m_RaytracingManager.GetDiffuseDenoiser(); diffuseDenoiser.DenoiseBuffer(cmd, hdCamera, m_AOIntermediateBuffer1, outputTexture, aoSettings.denoiserRadius.value); } else { HDUtils.BlitCameraTexture(cmd, m_AOIntermediateBuffer0, 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 void RenderReflectionsT1(HDCamera hdCamera, CommandBuffer cmd, RTHandle outputTexture, ScriptableRenderContext renderContext, int frameCount) { // Fetch the required resources BlueNoise blueNoise = 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>(); RayTracingSettings rtSettings = VolumeManager.instance.stack.GetComponent <RayTracingSettings>(); // Texture dimensions int texWidth = hdCamera.actualWidth; int texHeight = hdCamera.actualHeight; // Evaluate the dispatch parameters int areaTileSize = 8; int numTilesXHR = 0, numTilesYHR = 0; int currentKernel = 0; RenderTargetIdentifier clearCoatMaskTexture; using (new ProfilingSample(cmd, "Ray Traced Reflection", CustomSamplerId.RaytracingIntegrateReflection.GetSampler())) { if (settings.deferredMode.value) { // Fetch the new sample kernel currentKernel = reflectionShaderCS.FindKernel(settings.fullResolution.value ? "RaytracingReflectionsFullRes" : "RaytracingReflectionsHalfRes"); // Inject the ray-tracing sampling data blueNoise.BindDitheredRNGData8SPP(cmd); // Bind all the required textures cmd.SetComputeTextureParam(reflectionShaderCS, currentKernel, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer()); cmd.SetComputeTextureParam(reflectionShaderCS, currentKernel, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer()); 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._RaytracingIncludeSky, 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); if (settings.fullResolution.value) { // Evaluate the dispatch parameters numTilesXHR = (texWidth + (areaTileSize - 1)) / areaTileSize; numTilesYHR = (texHeight + (areaTileSize - 1)) / areaTileSize; } else { // Evaluate the dispatch parameters numTilesXHR = (texWidth / 2 + (areaTileSize - 1)) / areaTileSize; numTilesYHR = (texHeight / 2 + (areaTileSize - 1)) / areaTileSize; } // Compute the directions cmd.DispatchCompute(reflectionShaderCS, currentKernel, numTilesXHR, numTilesYHR, hdCamera.viewCount); // Prepare the components for the deferred lighting DeferredLightingRTParameters deferredParamters = PrepareReflectionDeferredLightingRTParameters(hdCamera); DeferredLightingRTResources deferredResources = PrepareDeferredLightingRTResources(hdCamera, m_ReflIntermediateTexture1, m_ReflIntermediateTexture0); // Evaluate the deferred lighting RenderRaytracingDeferredLighting(cmd, deferredParamters, deferredResources); } else { // Bind all the required data for ray tracing BindRayTracedReflectionData(cmd, hdCamera, reflectionShaderRT, settings, lightClusterSettings, rtSettings); // Run the computation if (settings.fullResolution.value) { cmd.DispatchRays(reflectionShaderRT, m_RayGenReflectionFullResName, (uint)hdCamera.actualWidth, (uint)hdCamera.actualHeight, (uint)hdCamera.viewCount); } else { // Run the computation cmd.DispatchRays(reflectionShaderRT, m_RayGenReflectionHalfResName, (uint)(hdCamera.actualWidth / 2), (uint)(hdCamera.actualHeight / 2), (uint)hdCamera.viewCount); } } // Fetch the right filter to use 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, HDShaderIDs._BlueNoiseTexture, 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.upscaleRadius.value); cmd.SetComputeIntParam(reflectionFilter, HDShaderIDs._RaytracingDenoiseRadius, settings.denoise.value ? settings.denoiserRadius.value : 0); cmd.SetComputeFloatParam(reflectionFilter, HDShaderIDs._RaytracingReflectionMinSmoothness, settings.minSmoothness.value); numTilesXHR = (texWidth + (areaTileSize - 1)) / areaTileSize; numTilesYHR = (texHeight + (areaTileSize - 1)) / areaTileSize; // Bind the right texture for clear coat support 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, hdCamera.viewCount); } using (new ProfilingSample(cmd, "Filter Reflection", CustomSamplerId.RaytracingFilterReflection.GetSampler())) { if (settings.denoise.value) { // Grab the history buffer RTHandle reflectionHistory = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.RaytracedReflection) ?? hdCamera.AllocHistoryFrameRT((int)HDCameraFrameHistoryType.RaytracedReflection, ReflectionHistoryBufferAllocatorFunction, 1); HDSimpleDenoiser simpleDenoiser = GetSimpleDenoiser(); simpleDenoiser.DenoiseBuffer(cmd, hdCamera, outputTexture, reflectionHistory, m_ReflIntermediateTexture0, settings.denoiserRadius.value, singleChannel: false); HDUtils.BlitCameraTexture(cmd, m_ReflIntermediateTexture0, outputTexture); } } }
public void RenderIndirectDiffuseT1(HDCamera hdCamera, CommandBuffer cmd, ScriptableRenderContext renderContext, int frameCount) { // Fetch the required resources HDRaytracingEnvironment rtEnvironment = m_RayTracingManager.CurrentEnvironment(); var settings = VolumeManager.instance.stack.GetComponent <GlobalIllumination>(); BlueNoise blueNoise = m_RayTracingManager.GetBlueNoiseManager(); // Fetch all the settings LightCluster lightClusterSettings = VolumeManager.instance.stack.GetComponent <LightCluster>(); if (settings.deferredMode.value) { ComputeShader indirectDiffuseCS = m_Asset.renderPipelineRayTracingResources.indirectDiffuseRaytracingCS; // Fetch the new sample kernel int currentKernel = indirectDiffuseCS.FindKernel("RaytracingIndirectDiffuseFullRes"); // Bind all the required textures cmd.SetComputeTextureParam(indirectDiffuseCS, currentKernel, HDShaderIDs._OwenScrambledRGTexture, m_Asset.renderPipelineResources.textures.owenScrambledRGBATex); cmd.SetComputeTextureParam(indirectDiffuseCS, currentKernel, HDShaderIDs._OwenScrambledTexture, m_Asset.renderPipelineResources.textures.owenScrambled256Tex); cmd.SetComputeTextureParam(indirectDiffuseCS, currentKernel, HDShaderIDs._ScramblingTexture, m_Asset.renderPipelineResources.textures.scramblingTex); cmd.SetComputeTextureParam(indirectDiffuseCS, currentKernel, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer()); cmd.SetComputeTextureParam(indirectDiffuseCS, currentKernel, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer()); // Bind all the required scalars cmd.SetComputeFloatParam(indirectDiffuseCS, HDShaderIDs._RaytracingIntensityClamp, settings.clampValue.value); // Bind the sampling data int frameIndex = hdCamera.IsTAAEnabled() ? hdCamera.taaFrameIndex : (int)m_FrameCount % 8; cmd.SetComputeIntParam(indirectDiffuseCS, HDShaderIDs._RaytracingFrameIndex, frameIndex); // Bind the output buffers cmd.SetComputeTextureParam(indirectDiffuseCS, currentKernel, HDShaderIDs._RaytracingDirectionBuffer, m_RaytracingDirectionBuffer); // 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; // Compute the directions cmd.DispatchCompute(indirectDiffuseCS, currentKernel, numTilesXHR, numTilesYHR, 1); // Prepare the components for the deferred lighting DeferredLightingRTParameters deferredParamters = PrepareIndirectDiffuseDeferredLightingRTParameters(hdCamera, rtEnvironment); DeferredLightingRTResources deferredResources = PrepareDeferredLightingRTResources(m_RaytracingDirectionBuffer, m_IDIntermediateBuffer0); // Evaluate the deferred lighting RenderRaytracingDeferredLighting(cmd, deferredParamters, deferredResources); } else { RayTracingShader indirectDiffuseRT = m_Asset.renderPipelineRayTracingResources.indirectDiffuseRaytracingRT; BindRayTracedIndirectDiffuseData(cmd, hdCamera, rtEnvironment, indirectDiffuseRT, settings, lightClusterSettings); // Set the data for the ray miss cmd.SetRayTracingTextureParam(indirectDiffuseRT, HDShaderIDs._SkyTexture, m_SkyManager.skyReflection); // Run the computation CoreUtils.SetKeyword(cmd, "DIFFUSE_LIGHTING_ONLY", true); CoreUtils.SetKeyword(cmd, "MULTI_BOUNCE_INDIRECT", false); // Run the computation cmd.DispatchRays(indirectDiffuseRT, m_RayGenIndirectDiffuseFullResName, (uint)hdCamera.actualWidth, (uint)hdCamera.actualHeight, 1); CoreUtils.SetKeyword(cmd, "DIFFUSE_LIGHTING_ONLY", false); } using (new ProfilingSample(cmd, "Filter Indirect Diffuse", CustomSamplerId.RaytracingFilterIndirectDiffuse.GetSampler())) { if (settings.enableFilter.value) { // Grab the history buffer RTHandle indirectDiffuseHistory = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.RaytracedIndirectDiffuse) ?? hdCamera.AllocHistoryFrameRT((int)HDCameraFrameHistoryType.RaytracedIndirectDiffuse, IndirectDiffuseHistoryBufferAllocatorFunction, 1); HDSimpleDenoiser simpleDenoiser = m_RayTracingManager.GetSimpleDenoiser(); simpleDenoiser.DenoiseBuffer(cmd, hdCamera, m_IDIntermediateBuffer0, indirectDiffuseHistory, m_IDIntermediateBuffer1, settings.filterRadius.value, singleChannel: false); HDUtils.BlitCameraTexture(cmd, m_IDIntermediateBuffer1, m_IDIntermediateBuffer0); } } }
public void RenderIndirectDiffuseT1(HDCamera hdCamera, CommandBuffer cmd, ScriptableRenderContext renderContext, int frameCount) { // Fetch the required resources var settings = VolumeManager.instance.stack.GetComponent <GlobalIllumination>(); BlueNoise blueNoise = GetBlueNoiseManager(); // Fetch all the settings LightCluster lightClusterSettings = VolumeManager.instance.stack.GetComponent <LightCluster>(); RayTracingSettings rtSettings = VolumeManager.instance.stack.GetComponent <RayTracingSettings>(); ComputeShader indirectDiffuseCS = m_Asset.renderPipelineRayTracingResources.indirectDiffuseRaytracingCS; using (new ProfilingSample(cmd, "Ray Trace Indirect Diffuse", CustomSamplerId.RaytracingIntegrateIndirectDiffuse.GetSampler())) { if (settings.deferredMode.value) { // Fetch the new sample kernel int currentKernel = indirectDiffuseCS.FindKernel(settings.fullResolution.value ? "RaytracingIndirectDiffuseFullRes" : "RaytracingIndirectDiffuseHalfRes"); // Inject the ray-tracing sampling data blueNoise.BindDitheredRNGData8SPP(cmd); // Bind all the required textures cmd.SetComputeTextureParam(indirectDiffuseCS, currentKernel, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer()); cmd.SetComputeTextureParam(indirectDiffuseCS, currentKernel, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer()); // Bind all the required scalars cmd.SetComputeFloatParam(indirectDiffuseCS, HDShaderIDs._RaytracingIntensityClamp, settings.clampValue.value); // Bind the sampling data int frameIndex = hdCamera.IsTAAEnabled() ? hdCamera.taaFrameIndex : (int)m_FrameCount % 8; cmd.SetComputeIntParam(indirectDiffuseCS, HDShaderIDs._RaytracingFrameIndex, frameIndex); // Bind the output buffers cmd.SetComputeTextureParam(indirectDiffuseCS, currentKernel, HDShaderIDs._RaytracingDirectionBuffer, m_RaytracingDirectionBuffer); // 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; // Compute the directions cmd.DispatchCompute(indirectDiffuseCS, currentKernel, numTilesXHR, numTilesYHR, hdCamera.viewCount); // Prepare the components for the deferred lighting DeferredLightingRTParameters deferredParamters = PrepareIndirectDiffuseDeferredLightingRTParameters(hdCamera); DeferredLightingRTResources deferredResources = PrepareDeferredLightingRTResources(hdCamera, m_RaytracingDirectionBuffer, m_IDIntermediateBuffer0); // Evaluate the deferred lighting RenderRaytracingDeferredLighting(cmd, deferredParamters, deferredResources); } else { RayTracingShader indirectDiffuseRT = m_Asset.renderPipelineRayTracingResources.indirectDiffuseRaytracingRT; BindRayTracedIndirectDiffuseData(cmd, hdCamera, indirectDiffuseRT, settings, lightClusterSettings, rtSettings); // Run the computation CoreUtils.SetKeyword(cmd, "DIFFUSE_LIGHTING_ONLY", true); CoreUtils.SetKeyword(cmd, "MULTI_BOUNCE_INDIRECT", false); // Run the computation cmd.DispatchRays(indirectDiffuseRT, m_RayGenIndirectDiffuseFullResName, (uint)hdCamera.actualWidth, (uint)hdCamera.actualHeight, (uint)hdCamera.viewCount); CoreUtils.SetKeyword(cmd, "DIFFUSE_LIGHTING_ONLY", false); } } using (new ProfilingSample(cmd, "Filter Indirect Diffuse", CustomSamplerId.RaytracingFilterIndirectDiffuse.GetSampler())) { // Fetch the right filter to use int currentKernel = indirectDiffuseCS.FindKernel(settings.fullResolution.value ? "IndirectDiffuseIntegrationUpscaleFullRes" : "IndirectDiffuseIntegrationUpscaleHalfRes"); // Inject all the parameters for the compute cmd.SetComputeTextureParam(indirectDiffuseCS, currentKernel, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer()); cmd.SetComputeTextureParam(indirectDiffuseCS, currentKernel, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer()); cmd.SetComputeTextureParam(indirectDiffuseCS, currentKernel, HDShaderIDs._IndirectDiffuseTexture, m_IDIntermediateBuffer0); cmd.SetComputeTextureParam(indirectDiffuseCS, currentKernel, HDShaderIDs._RaytracingDirectionBuffer, m_RaytracingDirectionBuffer); cmd.SetComputeTextureParam(indirectDiffuseCS, currentKernel, HDShaderIDs._BlueNoiseTexture, blueNoise.textureArray16RGB); cmd.SetComputeTextureParam(indirectDiffuseCS, currentKernel, HDShaderIDs._UpscaledIndirectDiffuseTextureRW, m_IDIntermediateBuffer1); cmd.SetComputeTextureParam(indirectDiffuseCS, currentKernel, HDShaderIDs._ScramblingTexture, m_Asset.renderPipelineResources.textures.scramblingTex); cmd.SetComputeIntParam(indirectDiffuseCS, HDShaderIDs._SpatialFilterRadius, settings.upscaleRadius.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; // Compute the texture cmd.DispatchCompute(indirectDiffuseCS, currentKernel, numTilesXHR, numTilesYHR, hdCamera.viewCount); // Copy the data back to the right buffer HDUtils.BlitCameraTexture(cmd, m_IDIntermediateBuffer1, m_IDIntermediateBuffer0); // Denoise if required if (settings.denoise.value) { DenoiseIndirectDiffuseBuffer(hdCamera, cmd, settings); } } }
bool RenderAreaShadows(HDCamera hdCamera, CommandBuffer cmd, int frameCount) { // Let's check all the resources and states to see if we should render the effect HDRaytracingEnvironment rtEnvironment = m_RayTracingManager.CurrentEnvironment(); // Make sure everything is valid bool invalidState = !hdCamera.frameSettings.IsEnabled(FrameSettingsField.RayTracing) || rtEnvironment == null || hdCamera.frameSettings.litShaderMode != LitShaderMode.Deferred; // If invalid state or ray-tracing acceleration structure, we stop right away if (invalidState) { return(false); } RayTracingShader shadowRayTrace = m_Asset.renderPipelineRayTracingResources.shadowRaytracingRT; ComputeShader shadowsCompute = m_Asset.renderPipelineRayTracingResources.shadowRaytracingCS; ComputeShader shadowFilter = m_Asset.renderPipelineRayTracingResources.shadowFilterCS; // Grab the TAA history buffers (SN/UN and Analytic value) RTHandle shadowHistoryArray = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.RaytracedShadow) ?? hdCamera.AllocHistoryFrameRT((int)HDCameraFrameHistoryType.RaytracedShadow, ShadowHistoryBufferAllocatorFunction, 1); 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(rtEnvironment.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._OwenScrambledRGTexture, m_Asset.renderPipelineResources.textures.owenScrambledRGBATex); cmd.SetGlobalTexture(HDShaderIDs._OwenScrambledTexture, m_Asset.renderPipelineResources.textures.owenScrambled256Tex); cmd.SetGlobalTexture(HDShaderIDs._ScramblingTexture, m_Asset.renderPipelineResources.textures.scramblingTex); int frameIndex = hdCamera.IsTAAEnabled() ? hdCamera.taaFrameIndex : (int)frameCount % 8; cmd.SetGlobalInt(HDShaderIDs._RaytracingFrameIndex, frameIndex); // Temporal Filtering kernels int applyTAAKernel = shadowFilter.FindKernel("AreaShadowApplyTAA"); int updateAnalyticHistory = shadowFilter.FindKernel("AreaAnalyticHistoryCopy"); int updateShadowHistory = shadowFilter.FindKernel("AreaShadowHistoryCopy"); // Spatial Filtering kernels 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, rtEnvironment.rayBias); int numLights = 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_lightList.lights[lightIdx].lightType != GPULightType.Rectangle || m_lightList.lights[lightIdx].screenSpaceShadowIndex == -1) { continue; } LightData currentLight = m_lightList.lights[lightIdx]; HDAdditionalLightData currentAdditionalLightData = GetCurrentRayTracedShadow(currentLight.screenSpaceShadowIndex); using (new ProfilingSample(cmd, "Ray Traced Area Shadow", CustomSamplerId.RaytracingShadowIntegration.GetSampler())) { // 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 (true) { 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_LightLoopLightData.lightData); cmd.SetComputeIntParam(shadowsCompute, HDShaderIDs._RaytracingTargetAreaLight, lightIdx); cmd.SetComputeIntParam(shadowsCompute, HDShaderIDs._RaytracingNumSamples, currentAdditionalLightData.numRayTracingSamples); 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_TextureCaches.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, HDShaderIDs._LightDatas, m_LightLoopLightData.lightData); cmd.SetRayTracingTextureParam(shadowRayTrace, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer()); cmd.SetRayTracingTextureParam(shadowRayTrace, HDShaderIDs._RaytracedAreaShadowSample, m_DenoiseBuffer1); cmd.SetRayTracingTextureParam(shadowRayTrace, HDShaderIDs._RaytracedAreaShadowIntegration, m_DenoiseBuffer0); cmd.SetRayTracingTextureParam(shadowRayTrace, HDShaderIDs._RaytracingDirectionBuffer, m_RaytracingDirectionBuffer); cmd.SetRayTracingTextureParam(shadowRayTrace, HDShaderIDs._RaytracingDistanceBuffer, m_RaytracingDistanceBuffer); cmd.SetRayTracingTextureParam(shadowRayTrace, HDShaderIDs._AnalyticProbBuffer, m_AnalyticProbBuffer); cmd.DispatchRays(shadowRayTrace, m_RayGenAreaShadowSingleName, (uint)hdCamera.actualWidth, (uint)hdCamera.actualHeight, 1); // Let's do the following samples (if any) for (int sampleIndex = 1; sampleIndex < currentAdditionalLightData.numRayTracingSamples; ++sampleIndex) { shadowComputeKernel = shadowsCompute.FindKernel("RaytracingAreaShadowNewSample"); // This pass generates a new sample based on the initial pre-pass cmd.SetComputeBufferParam(shadowsCompute, shadowComputeKernel, HDShaderIDs._LightDatas, m_LightLoopLightData.lightData); cmd.SetComputeIntParam(shadowsCompute, HDShaderIDs._RaytracingTargetAreaLight, lightIdx); cmd.SetComputeIntParam(shadowsCompute, HDShaderIDs._RaytracingNumSamples, currentAdditionalLightData.numRayTracingSamples); 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_TextureCaches.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, HDShaderIDs._LightDatas, m_LightLoopLightData.lightData); cmd.SetRayTracingTextureParam(shadowRayTrace, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer()); cmd.SetRayTracingTextureParam(shadowRayTrace, HDShaderIDs._RaytracedAreaShadowSample, m_DenoiseBuffer1); cmd.SetRayTracingTextureParam(shadowRayTrace, HDShaderIDs._RaytracedAreaShadowIntegration, m_DenoiseBuffer0); cmd.SetRayTracingTextureParam(shadowRayTrace, HDShaderIDs._RaytracingDirectionBuffer, m_RaytracingDirectionBuffer); cmd.SetRayTracingTextureParam(shadowRayTrace, HDShaderIDs._RaytracingDistanceBuffer, m_RaytracingDistanceBuffer); cmd.SetRayTracingTextureParam(shadowRayTrace, HDShaderIDs._AnalyticProbBuffer, m_AnalyticProbBuffer); cmd.DispatchRays(shadowRayTrace, m_RayGenAreaShadowSingleName, (uint)hdCamera.actualWidth, (uint)hdCamera.actualHeight, 1); } } else { // This pass generates the analytic value and will do the full integration cmd.SetRayTracingBufferParam(shadowRayTrace, HDShaderIDs._LightDatas, m_LightLoopLightData.lightData); cmd.SetRayTracingIntParam(shadowRayTrace, HDShaderIDs._RaytracingTargetAreaLight, lightIdx); cmd.SetRayTracingIntParam(shadowRayTrace, HDShaderIDs._RaytracingNumSamples, currentAdditionalLightData.numRayTracingSamples); cmd.SetRayTracingMatrixParam(shadowRayTrace, HDShaderIDs._RaytracingAreaWorldToLocal, worldToLocalArea); cmd.SetRayTracingTextureParam(shadowRayTrace, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer()); cmd.SetRayTracingTextureParam(shadowRayTrace, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer()); cmd.SetRayTracingTextureParam(shadowRayTrace, HDShaderIDs._GBufferTexture[0], m_GbufferManager.GetBuffer(0)); cmd.SetRayTracingTextureParam(shadowRayTrace, HDShaderIDs._GBufferTexture[1], m_GbufferManager.GetBuffer(1)); cmd.SetRayTracingTextureParam(shadowRayTrace, HDShaderIDs._GBufferTexture[2], m_GbufferManager.GetBuffer(2)); cmd.SetRayTracingTextureParam(shadowRayTrace, HDShaderIDs._GBufferTexture[3], m_GbufferManager.GetBuffer(3)); cmd.SetRayTracingIntParam(shadowRayTrace, HDShaderIDs._RayCountEnabled, m_RayTracingManager.rayCountManager.RayCountIsEnabled()); cmd.SetRayTracingTextureParam(shadowRayTrace, HDShaderIDs._RayCountTexture, m_RayTracingManager.rayCountManager.rayCountTexture); cmd.SetRayTracingTextureParam(shadowRayTrace, HDShaderIDs._AreaCookieTextures, m_TextureCaches.areaLightCookieManager.GetTexCache()); cmd.SetRayTracingTextureParam(shadowRayTrace, HDShaderIDs._AnalyticProbBuffer, m_AnalyticProbBuffer); cmd.SetRayTracingTextureParam(shadowRayTrace, HDShaderIDs._RaytracedAreaShadowIntegration, m_DenoiseBuffer0); cmd.DispatchRays(shadowRayTrace, m_RayGenAreaShadowName, (uint)hdCamera.actualWidth, (uint)hdCamera.actualHeight, 1); } } using (new ProfilingSample(cmd, "Combine Area Shadow", CustomSamplerId.RaytracingShadowCombination.GetSampler())) { // Global parameters cmd.SetComputeIntParam(shadowFilter, HDShaderIDs._RaytracingDenoiseRadius, currentAdditionalLightData.filterSizeTraced); cmd.SetComputeIntParam(shadowFilter, HDShaderIDs._RaytracingShadowSlot, m_lightList.lights[lightIdx].screenSpaceShadowIndex); // 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)shadowHistoryArray.rt.width, hdCamera.actualHeight / (float)shadowHistoryArray.rt.height); cmd.SetComputeVectorParam(shadowFilter, HDShaderIDs._RTHandleScaleHistory, historyScale); cmd.SetComputeTextureParam(shadowFilter, applyTAAKernel, HDShaderIDs._AnalyticProbBuffer, m_AnalyticProbBuffer); cmd.SetComputeTextureParam(shadowFilter, applyTAAKernel, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer()); cmd.SetComputeTextureParam(shadowFilter, applyTAAKernel, HDShaderIDs._AreaShadowHistory, shadowHistoryArray); cmd.SetComputeTextureParam(shadowFilter, applyTAAKernel, HDShaderIDs._AnalyticHistoryBuffer, areaAnalyticHistoryArray); cmd.SetComputeTextureParam(shadowFilter, applyTAAKernel, HDShaderIDs._DenoiseInputTexture, m_DenoiseBuffer0); cmd.SetComputeTextureParam(shadowFilter, applyTAAKernel, HDShaderIDs._DenoiseOutputTextureRW, m_DenoiseBuffer1); cmd.DispatchCompute(shadowFilter, applyTAAKernel, numTilesX, numTilesY, 1); // Update the shadow history buffer cmd.SetComputeTextureParam(shadowFilter, updateAnalyticHistory, HDShaderIDs._AnalyticProbBuffer, m_AnalyticProbBuffer); cmd.SetComputeTextureParam(shadowFilter, updateAnalyticHistory, HDShaderIDs._AnalyticHistoryBuffer, areaAnalyticHistoryArray); cmd.DispatchCompute(shadowFilter, updateAnalyticHistory, numTilesX, numTilesY, 1); // Update the analytic history buffer cmd.SetComputeTextureParam(shadowFilter, updateShadowHistory, HDShaderIDs._DenoiseInputTexture, m_DenoiseBuffer1); cmd.SetComputeTextureParam(shadowFilter, updateShadowHistory, HDShaderIDs._AreaShadowHistoryRW, shadowHistoryArray); cmd.DispatchCompute(shadowFilter, updateShadowHistory, numTilesX, numTilesY, 1); if (currentAdditionalLightData.filterSizeTraced > 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_Asset.renderPipelineResources.textures.scramblingTex); // Noise estimation pre-pass cmd.SetComputeTextureParam(shadowFilter, estimateNoiseKernel, HDShaderIDs._DenoiseInputTexture, m_DenoiseBuffer1); cmd.SetComputeTextureParam(shadowFilter, estimateNoiseKernel, HDShaderIDs._DenoiseOutputTextureRW, m_DenoiseBuffer0); 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._ScreenSpaceShadowsTextureRW, m_ScreenSpaceShadowTextureArray); // First denoising pass cmd.SetComputeTextureParam(shadowFilter, firstDenoiseKernel, HDShaderIDs._DenoiseInputTexture, m_DenoiseBuffer0); cmd.SetComputeTextureParam(shadowFilter, firstDenoiseKernel, HDShaderIDs._DenoiseOutputTextureRW, m_DenoiseBuffer1); cmd.DispatchCompute(shadowFilter, firstDenoiseKernel, numTilesX, numTilesY, 1); } // Re-inject 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._ScreenSpaceShadowsTextureRW, m_ScreenSpaceShadowTextureArray); // Second (and final) denoising pass cmd.SetComputeTextureParam(shadowFilter, secondDenoiseKernel, HDShaderIDs._DenoiseInputTexture, m_DenoiseBuffer1); cmd.DispatchCompute(shadowFilter, secondDenoiseKernel, numTilesX, numTilesY, 1); } } return(true); }
void RenderDirectionalLightScreenSpaceShadow(CommandBuffer cmd, HDCamera hdCamera, int frameCount) { // Render directional screen space shadow if required if (m_CurrentSunLightAdditionalLightData != null && m_CurrentSunLightAdditionalLightData.WillRenderScreenSpaceShadow()) { #if ENABLE_RAYTRACING // If the shadow is flagged as ray traced, we need to evaluate it completely if (hdCamera.frameSettings.IsEnabled(FrameSettingsField.RayTracing) && m_CurrentSunLightAdditionalLightData.WillRenderRayTracedShadow()) { HDRaytracingEnvironment rtEnvironment = m_RayTracingManager.CurrentEnvironment(); ComputeShader shadowsCompute = m_Asset.renderPipelineRayTracingResources.shadowRaytracingCS; RayTracingShader shadowRayTrace = m_Asset.renderPipelineRayTracingResources.shadowRaytracingRT; // 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 shadowComputeKernel = shadowsCompute.FindKernel("ClearShadowTexture"); cmd.SetComputeBufferParam(shadowsCompute, shadowComputeKernel, HDShaderIDs._LightDatas, m_LightLoopLightData.lightData); cmd.SetComputeTextureParam(shadowsCompute, shadowComputeKernel, HDShaderIDs._RaytracedDirectionalShadowIntegration, m_DenoiseBuffer0); cmd.DispatchCompute(shadowsCompute, shadowComputeKernel, numTilesX, numTilesY, 1); cmd.SetGlobalTexture(HDShaderIDs._OwenScrambledRGTexture, m_Asset.renderPipelineResources.textures.owenScrambledRGBATex); cmd.SetGlobalTexture(HDShaderIDs._OwenScrambledTexture, m_Asset.renderPipelineResources.textures.owenScrambled256Tex); cmd.SetGlobalTexture(HDShaderIDs._ScramblingTexture, m_Asset.renderPipelineResources.textures.scramblingTex); for (int i = 0; i < m_CurrentSunLightAdditionalLightData.numRayTracingSamples; ++i) { shadowComputeKernel = shadowsCompute.FindKernel("RaytracingDirectionalShadowSample"); int frameIndex = hdCamera.IsTAAEnabled() ? hdCamera.taaFrameIndex : (int)frameCount % 8; // This pass evaluates the analytic value and the generates and outputs the first sample cmd.SetComputeBufferParam(shadowsCompute, shadowComputeKernel, HDShaderIDs._LightDatas, m_LightLoopLightData.lightData); cmd.SetComputeIntParam(shadowsCompute, HDShaderIDs._RaytracingFrameIndex, frameIndex); cmd.SetComputeIntParam(shadowsCompute, HDShaderIDs._RaytracingNumSamples, m_CurrentSunLightAdditionalLightData.numRayTracingSamples); cmd.SetComputeIntParam(shadowsCompute, HDShaderIDs._RaytracingSampleIndex, i); 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._RaytracedDirectionalShadowIntegration, m_DenoiseBuffer0); cmd.SetComputeTextureParam(shadowsCompute, shadowComputeKernel, HDShaderIDs._RaytracingDirectionBuffer, m_RaytracingDirectionBuffer); cmd.SetComputeFloatParam(shadowsCompute, HDShaderIDs._DirectionalLightAngle, m_CurrentSunLightAdditionalLightData.sunLightConeAngle); cmd.DispatchCompute(shadowsCompute, shadowComputeKernel, numTilesX, numTilesY, 1); // Grab the acceleration structure for the target camera RayTracingAccelerationStructure accelerationStructure = m_RayTracingManager.RequestAccelerationStructure(rtEnvironment.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); // This pass will use the previously generated sample and add it to the integration buffer cmd.SetRayTracingTextureParam(shadowRayTrace, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer()); cmd.SetRayTracingTextureParam(shadowRayTrace, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer()); cmd.SetRayTracingTextureParam(shadowRayTrace, HDShaderIDs._RaytracedDirectionalShadowIntegration, m_DenoiseBuffer0); cmd.SetRayTracingTextureParam(shadowRayTrace, HDShaderIDs._RaytracingDirectionBuffer, m_RaytracingDirectionBuffer); cmd.SetRayTracingFloatParam(shadowRayTrace, HDShaderIDs._DirectionalLightAngle, m_CurrentSunLightAdditionalLightData.sunLightConeAngle); cmd.SetRayTracingIntParam(shadowRayTrace, HDShaderIDs._RaytracingNumSamples, 1); cmd.DispatchRays(shadowRayTrace, m_RayGenDirectionalShadowSingleName, (uint)hdCamera.actualWidth, (uint)hdCamera.actualHeight, 1); } RTHandle shadowHistoryArray = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.RaytracedShadow) ?? hdCamera.AllocHistoryFrameRT((int)HDCameraFrameHistoryType.RaytracedShadow, ShadowHistoryBufferAllocatorFunction, 1); // Apply the simple denoiser (if required) if (m_CurrentSunLightAdditionalLightData.filterTracedShadow) { HDSimpleDenoiser simpleDenoiser = m_RayTracingManager.GetSimpleDenoiser(); simpleDenoiser.DenoiseBuffer(cmd, hdCamera, m_DenoiseBuffer0, shadowHistoryArray, m_DenoiseBuffer1, m_CurrentSunLightAdditionalLightData.filterSizeTraced, singleChannel: true, slotIndex: m_CurrentSunLightDirectionalLightData.screenSpaceShadowIndex); } else { HDUtils.BlitCameraTexture(cmd, m_DenoiseBuffer0, m_DenoiseBuffer1); } shadowComputeKernel = shadowsCompute.FindKernel("OutputShadowTexture"); cmd.SetComputeTextureParam(shadowsCompute, shadowComputeKernel, HDShaderIDs._RaytracedDirectionalShadowIntegration, m_DenoiseBuffer1); cmd.SetComputeTextureParam(shadowsCompute, shadowComputeKernel, HDShaderIDs._ScreenSpaceShadowsTextureRW, m_ScreenSpaceShadowTextureArray); cmd.SetComputeIntParam(shadowsCompute, HDShaderIDs._RaytracingShadowSlot, m_CurrentSunLightDirectionalLightData.screenSpaceShadowIndex); cmd.DispatchCompute(shadowsCompute, shadowComputeKernel, numTilesX, numTilesY, 1); } else #endif { // If it is screen space but not ray traced, then we can rely on the shadow map CoreUtils.SetRenderTarget(cmd, m_ScreenSpaceShadowTextureArray, depthSlice: m_CurrentSunLightDirectionalLightData.screenSpaceShadowIndex); HDUtils.DrawFullScreen(cmd, s_ScreenSpaceShadowsMat, m_ScreenSpaceShadowTextureArray); } } }
bool RenderLightScreenSpaceShadows(HDCamera hdCamera, CommandBuffer cmd) { // Fetch the ray tracing environment HDRaytracingEnvironment rtEnvironment = m_RayTracingManager.CurrentEnvironment(); // If invalid state, we stop right away if (!hdCamera.frameSettings.IsEnabled(FrameSettingsField.RayTracing) || rtEnvironment == null) { return(false); } // Grab the history buffer RTHandle shadowHistoryArray = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.RaytracedShadow) ?? hdCamera.AllocHistoryFrameRT((int)HDCameraFrameHistoryType.RaytracedShadow, ShadowHistoryBufferAllocatorFunction, 1); // Grab the acceleration structure for the target camera RayTracingAccelerationStructure accelerationStructure = m_RayTracingManager.RequestAccelerationStructure(rtEnvironment.shadowLayerMask); // Set the acceleration structure for the pass cmd.SetRayTracingAccelerationStructure(m_ScreenSpaceShadowsRT, HDShaderIDs._RaytracingAccelerationStructureName, accelerationStructure); // Define the shader pass to use for the reflection pass cmd.SetRayTracingShaderPass(m_ScreenSpaceShadowsRT, "VisibilityDXR"); // Inject the ray-tracing sampling data m_BlueNoise.BindDitheredRNGData8SPP(cmd); // Compute and inject the frame data int frameIndex = hdCamera.IsTAAEnabled() ? hdCamera.taaFrameIndex : (int)m_FrameCount % 8; cmd.SetGlobalInt(HDShaderIDs._RaytracingFrameIndex, frameIndex); // Inject the ray generation data cmd.SetGlobalFloat(HDShaderIDs._RaytracingRayBias, rtEnvironment.rayBias); using (new ProfilingSample(cmd, "Ray Traced Shadows", CustomSamplerId.RaytracingShadowIntegration.GetSampler())) { // Loop through all the potential screen space light shadows for (int lightIdx = 0; lightIdx < m_ScreenSpaceShadowIndex; ++lightIdx) { // This matches the directional light if (!m_CurrentScreenSpaceShadowData[lightIdx].valid) { continue; } // Fetch the light data and additional light data LightData currentLight = m_lightList.lights[m_CurrentScreenSpaceShadowData[lightIdx].lightDataIndex]; HDAdditionalLightData currentAdditionalLightData = m_CurrentScreenSpaceShadowData[lightIdx].additionalLightData; // Trigger the right algorithm based on the light type switch (currentLight.lightType) { case GPULightType.Rectangle: { RenderAreaScreenSpaceShadow(cmd, hdCamera, rtEnvironment, currentLight, currentAdditionalLightData, m_CurrentScreenSpaceShadowData[lightIdx].lightDataIndex, shadowHistoryArray); } break; case GPULightType.Point: { RenderPunctualScreenSpaceShadow(cmd, hdCamera, rtEnvironment, currentLight, currentAdditionalLightData, m_CurrentScreenSpaceShadowData[lightIdx].lightDataIndex, shadowHistoryArray); } break; } } } return(true); }
void RenderDirectionalLightScreenSpaceShadow(CommandBuffer cmd, HDCamera hdCamera) { // Render directional screen space shadow if required if (m_CurrentSunLightAdditionalLightData != null && m_CurrentSunLightAdditionalLightData.WillRenderScreenSpaceShadow()) { #if ENABLE_RAYTRACING // Grab the ray tracing environment HDRaytracingEnvironment rtEnvironment = m_RayTracingManager.CurrentEnvironment(); // If the shadow is flagged as ray traced, we need to evaluate it completely if (rtEnvironment != null && hdCamera.frameSettings.IsEnabled(FrameSettingsField.RayTracing) && m_CurrentSunLightAdditionalLightData.WillRenderRayTracedShadow()) { // 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; // Clear the integration texture cmd.SetComputeTextureParam(m_ScreenSpaceShadowsCS, m_ClearShadowTexture, HDShaderIDs._RaytracedDirectionalShadowIntegration, m_ShadowIntermediateBufferRGBA0); cmd.DispatchCompute(m_ScreenSpaceShadowsCS, m_ClearShadowTexture, numTilesX, numTilesY, hdCamera.viewCount); // Grab and bind the acceleration structure for the target camera RayTracingAccelerationStructure accelerationStructure = m_RayTracingManager.RequestAccelerationStructure(rtEnvironment.shadowLayerMask); cmd.SetRayTracingAccelerationStructure(m_ScreenSpaceShadowsRT, HDShaderIDs._RaytracingAccelerationStructureName, accelerationStructure); // Inject the ray-tracing sampling data m_BlueNoise.BindDitheredRNGData8SPP(cmd); // Compute the current frame index int frameIndex = hdCamera.IsTAAEnabled() ? hdCamera.taaFrameIndex : (int)m_FrameCount % 8; cmd.SetComputeIntParam(m_ScreenSpaceShadowsCS, HDShaderIDs._RaytracingFrameIndex, frameIndex); // Inject the ray generation data cmd.SetGlobalFloat(HDShaderIDs._RaytracingRayBias, rtEnvironment.rayBias); // Loop through the samples of this frame for (int sampleIdx = 0; sampleIdx < m_CurrentSunLightAdditionalLightData.numRayTracingSamples; ++sampleIdx) { // Bind the light & sampling data cmd.SetComputeBufferParam(m_ScreenSpaceShadowsCS, m_RaytracingDirectionalShadowSample, HDShaderIDs._DirectionalLightDatas, m_LightLoopLightData.directionalLightData); cmd.SetComputeIntParam(m_ScreenSpaceShadowsCS, HDShaderIDs._DirectionalShadowIndex, m_CurrentShadowSortedSunLightIndex); cmd.SetComputeFloatParam(m_ScreenSpaceShadowsCS, HDShaderIDs._DirectionalLightAngle, m_CurrentSunLightAdditionalLightData.sunLightConeAngle); cmd.SetComputeIntParam(m_ScreenSpaceShadowsCS, HDShaderIDs._RaytracingSampleIndex, sampleIdx); cmd.SetComputeIntParam(m_ScreenSpaceShadowsCS, HDShaderIDs._RaytracingNumSamples, m_CurrentSunLightAdditionalLightData.numRayTracingSamples); // Input Buffer cmd.SetComputeTextureParam(m_ScreenSpaceShadowsCS, m_RaytracingDirectionalShadowSample, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer()); cmd.SetComputeTextureParam(m_ScreenSpaceShadowsCS, m_RaytracingDirectionalShadowSample, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer()); // Output buffer cmd.SetComputeTextureParam(m_ScreenSpaceShadowsCS, m_RaytracingDirectionalShadowSample, HDShaderIDs._RaytracingDirectionBuffer, m_RaytracingDirectionBuffer); // Generate a new direction cmd.DispatchCompute(m_ScreenSpaceShadowsCS, m_RaytracingDirectionalShadowSample, numTilesX, numTilesY, hdCamera.viewCount); // Define the shader pass to use for the shadow pass cmd.SetRayTracingShaderPass(m_ScreenSpaceShadowsRT, "VisibilityDXR"); // Set ray count texture cmd.SetRayTracingIntParam(m_ScreenSpaceShadowsRT, HDShaderIDs._RayCountEnabled, m_RayTracingManager.rayCountManager.RayCountIsEnabled()); cmd.SetRayTracingTextureParam(m_ScreenSpaceShadowsRT, HDShaderIDs._RayCountTexture, m_RayTracingManager.rayCountManager.GetRayCountTexture()); // Input buffers cmd.SetRayTracingTextureParam(m_ScreenSpaceShadowsRT, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer()); cmd.SetRayTracingTextureParam(m_ScreenSpaceShadowsRT, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer()); cmd.SetRayTracingTextureParam(m_ScreenSpaceShadowsRT, HDShaderIDs._RaytracingDirectionBuffer, m_RaytracingDirectionBuffer); cmd.SetRayTracingIntParam(m_ScreenSpaceShadowsRT, HDShaderIDs._RaytracingNumSamples, m_CurrentSunLightAdditionalLightData.numRayTracingSamples); // Output buffer cmd.SetRayTracingTextureParam(m_ScreenSpaceShadowsRT, HDShaderIDs._RaytracedDirectionalShadowIntegration, m_ShadowIntermediateBufferRGBA0); // Evaluate the visibility cmd.DispatchRays(m_ScreenSpaceShadowsRT, m_RayGenDirectionalShadowSingleName, (uint)hdCamera.actualWidth, (uint)hdCamera.actualHeight, (uint)hdCamera.viewCount); } // Grab the history buffer for shadows RTHandle shadowHistoryArray = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.RaytracedShadow) ?? hdCamera.AllocHistoryFrameRT((int)HDCameraFrameHistoryType.RaytracedShadow, ShadowHistoryBufferAllocatorFunction, 1); // Apply the simple denoiser (if required) if (m_CurrentSunLightAdditionalLightData.filterTracedShadow) { // Apply the temporal denoiser HDTemporalFilter temporalFilter = m_RayTracingManager.GetTemporalFilter(); temporalFilter.DenoiseBuffer(cmd, hdCamera, m_ShadowIntermediateBufferRGBA0, shadowHistoryArray, m_ShadowIntermediateBufferRGBA1, singleChannel: true, slotIndex: m_CurrentSunLightDirectionalLightData.screenSpaceShadowIndex); // Apply the spatial denoiser HDSimpleDenoiser simpleDenoiser = m_RayTracingManager.GetSimpleDenoiser(); simpleDenoiser.DenoiseBufferNoHistory(cmd, hdCamera, m_ShadowIntermediateBufferRGBA1, m_ShadowIntermediateBufferRGBA0, m_CurrentSunLightAdditionalLightData.filterSizeTraced, singleChannel: true); } cmd.SetComputeTextureParam(m_ScreenSpaceShadowsCS, m_OutputShadowTextureKernel, HDShaderIDs._RaytracedDirectionalShadowIntegration, m_ShadowIntermediateBufferRGBA0); cmd.SetComputeTextureParam(m_ScreenSpaceShadowsCS, m_OutputShadowTextureKernel, HDShaderIDs._ScreenSpaceShadowsTextureRW, m_ScreenSpaceShadowTextureArray); cmd.SetComputeIntParam(m_ScreenSpaceShadowsCS, HDShaderIDs._RaytracingShadowSlot, m_CurrentSunLightDirectionalLightData.screenSpaceShadowIndex); cmd.DispatchCompute(m_ScreenSpaceShadowsCS, m_OutputShadowTextureKernel, numTilesX, numTilesY, hdCamera.viewCount); } else #endif { // If it is screen space but not ray traced, then we can rely on the shadow map CoreUtils.SetRenderTarget(cmd, m_ScreenSpaceShadowTextureArray, depthSlice: m_CurrentSunLightDirectionalLightData.screenSpaceShadowIndex); HDUtils.DrawFullScreen(cmd, s_ScreenSpaceShadowsMat, m_ScreenSpaceShadowTextureArray); } } }