void InitializeScreenSpaceShadows() { if (!m_Asset.currentPlatformRenderPipelineSettings.hdShadowInitParams.supportScreenSpaceShadows) { return; } // Fetch the shaders if (m_RayTracingSupported) { m_ScreenSpaceShadowsCS = m_GlobalSettings.renderPipelineRayTracingResources.shadowRaytracingCS; m_ScreenSpaceShadowsFilterCS = m_GlobalSettings.renderPipelineRayTracingResources.shadowFilterCS; m_ScreenSpaceShadowsRT = m_GlobalSettings.renderPipelineRayTracingResources.shadowRaytracingRT; // Directional shadow kernels m_ClearShadowTexture = m_ScreenSpaceShadowsCS.FindKernel("ClearShadowTexture"); m_OutputShadowTextureKernel = m_ScreenSpaceShadowsCS.FindKernel("OutputShadowTexture"); m_OutputColorShadowTextureKernel = m_ScreenSpaceShadowsCS.FindKernel("OutputColorShadowTexture"); m_OutputSpecularShadowTextureKernel = m_ScreenSpaceShadowsCS.FindKernel("OutputSpecularShadowTexture"); m_RaytracingDirectionalShadowSample = m_ScreenSpaceShadowsCS.FindKernel("RaytracingDirectionalShadowSample"); m_RaytracingPointShadowSample = m_ScreenSpaceShadowsCS.FindKernel("RaytracingPointShadowSample"); m_RaytracingSpotShadowSample = m_ScreenSpaceShadowsCS.FindKernel("RaytracingSpotShadowSample"); // Area shadow kernels m_AreaRaytracingShadowPrepassKernel = m_ScreenSpaceShadowsCS.FindKernel("RaytracingAreaShadowPrepass"); m_AreaRaytracingShadowNewSampleKernel = m_ScreenSpaceShadowsCS.FindKernel("RaytracingAreaShadowNewSample"); m_AreaShadowApplyTAAKernel = m_ScreenSpaceShadowsFilterCS.FindKernel("AreaShadowApplyTAA"); m_AreaUpdateAnalyticHistoryKernel = m_ScreenSpaceShadowsFilterCS.FindKernel("AreaAnalyticHistoryCopy"); m_AreaUpdateShadowHistoryKernel = m_ScreenSpaceShadowsFilterCS.FindKernel("AreaShadowHistoryCopy"); m_AreaEstimateNoiseKernel = m_ScreenSpaceShadowsFilterCS.FindKernel("AreaShadowEstimateNoise"); m_AreaFirstDenoiseKernel = m_ScreenSpaceShadowsFilterCS.FindKernel("AreaShadowDenoiseFirstPass"); m_AreaSecondDenoiseKernel = m_ScreenSpaceShadowsFilterCS.FindKernel("AreaShadowDenoiseSecondPass"); m_AreaShadowNoDenoiseKernel = m_ScreenSpaceShadowsFilterCS.FindKernel("AreaShadowNoDenoise"); // Debug kernel m_WriteShadowTextureDebugKernel = m_ScreenSpaceShadowsFilterCS.FindKernel("WriteShadowTextureDebug"); } // Directional shadow material s_ScreenSpaceShadowsMat = CoreUtils.CreateEngineMaterial(screenSpaceShadowsShader); switch (m_Asset.currentPlatformRenderPipelineSettings.hdShadowInitParams.shadowFilteringQuality) { case HDShadowFilteringQuality.Low: s_ScreenSpaceShadowsMat.EnableKeyword("SHADOW_LOW"); break; case HDShadowFilteringQuality.Medium: s_ScreenSpaceShadowsMat.EnableKeyword("SHADOW_MEDIUM"); break; case HDShadowFilteringQuality.High: s_ScreenSpaceShadowsMat.EnableKeyword("SHADOW_HIGH"); break; case HDShadowFilteringQuality.VeryHigh: s_ScreenSpaceShadowsMat.EnableKeyword("SHADOW_VERY_HIGH"); break; default: s_ScreenSpaceShadowsMat.EnableKeyword("SHADOW_MEDIUM"); break; } }
extern public static string GetCallableShaderName([NotNull] RayTracingShader s, int shaderIndex);
extern internal static int GetRayTracingShaderPlatformCount(RayTracingShader s);
extern public static string GetRayGenerationShaderName([NotNull] RayTracingShader s, int shaderIndex);
extern public static int GetMissShaderRayPayloadSize([NotNull] RayTracingShader s, int shaderIndex);
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); }
extern public static ShaderMessage[] GetRayTracingShaderMessages([NotNull] RayTracingShader s);
void RenderPathTracing(HDCamera hdCamera, CommandBuffer cmd, RTHandle outputTexture, ScriptableRenderContext renderContext, int frameCount) { // First thing to check is: Do we have a valid ray-tracing environment? RayTracingShader pathTracingShader = m_Asset.renderPipelineRayTracingResources.pathTracing; PathTracing pathTracingSettings = hdCamera.volumeStack.GetComponent <PathTracing>(); // Check the validity of the state before computing the effect if (!pathTracingShader || !pathTracingSettings.enable.value) { return; } // Inject the ray-tracing sampling data BlueNoise blueNoiseManager = GetBlueNoiseManager(); blueNoiseManager.BindDitheredRNGData256SPP(cmd); // Grab the history buffer (hijack the reflections one) RTHandle history = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.PathTracing) ?? hdCamera.AllocHistoryFrameRT((int)HDCameraFrameHistoryType.PathTracing, PathTracingHistoryBufferAllocatorFunction, 1); // Grab the acceleration structure and the list of HD lights for the target camera RayTracingAccelerationStructure accelerationStructure = RequestAccelerationStructure(); HDRaytracingLightCluster lightCluster = RequestLightCluster(); LightCluster lightClusterSettings = hdCamera.volumeStack.GetComponent <LightCluster>(); RayTracingSettings rayTracingSettings = hdCamera.volumeStack.GetComponent <RayTracingSettings>(); // Define the shader pass to use for the path tracing pass cmd.SetRayTracingShaderPass(pathTracingShader, "PathTracingDXR"); // Set the acceleration structure for the pass cmd.SetRayTracingAccelerationStructure(pathTracingShader, HDShaderIDs._RaytracingAccelerationStructureName, accelerationStructure); // Inject the ray-tracing sampling data 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, rayTracingSettings.rayBias.value); cmd.SetGlobalFloat(HDShaderIDs._RaytracingNumSamples, pathTracingSettings.maximumSamples.value); cmd.SetGlobalFloat(HDShaderIDs._RaytracingMinRecursion, pathTracingSettings.minimumDepth.value); cmd.SetGlobalFloat(HDShaderIDs._RaytracingMaxRecursion, pathTracingSettings.maximumDepth.value); cmd.SetGlobalFloat(HDShaderIDs._RaytracingIntensityClamp, pathTracingSettings.maximumIntensity.value); cmd.SetGlobalFloat(HDShaderIDs._RaytracingCameraNearPlane, hdCamera.camera.nearClipPlane); // Set the data for the ray generation //cmd.SetRayTracingTextureParam(pathTracingShader, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer()); cmd.SetRayTracingTextureParam(pathTracingShader, HDShaderIDs._CameraColorTextureRW, outputTexture); cmd.SetGlobalInt(HDShaderIDs._RaytracingFrameIndex, frameCount); // Compute an approximate pixel spread angle value (in radians) cmd.SetRayTracingFloatParam(pathTracingShader, HDShaderIDs._RaytracingPixelSpreadAngle, GetPixelSpreadAngle(hdCamera.camera.fieldOfView, hdCamera.actualWidth, hdCamera.actualHeight)); // 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()); // Set the data for the ray miss cmd.SetRayTracingTextureParam(pathTracingShader, HDShaderIDs._SkyTexture, m_SkyManager.GetSkyReflection(hdCamera)); // Additional data for path tracing cmd.SetRayTracingTextureParam(pathTracingShader, HDShaderIDs._AccumulatedFrameTexture, history); cmd.SetRayTracingMatrixParam(pathTracingShader, HDShaderIDs._PixelCoordToViewDirWS, hdCamera.mainViewConstants.pixelCoordToViewDirWS); // Run the computation cmd.DispatchRays(pathTracingShader, m_PathTracingRayGenShaderName, (uint)hdCamera.actualWidth, (uint)hdCamera.actualHeight, 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); } 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 void RenderAO(HDCamera hdCamera, CommandBuffer cmd, RTHandle outputTexture, ScriptableRenderContext renderContext, int frameCount) { // 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 (!m_RenderPipeline.GetRayTracingState()) { SetDefaultAmbientOcclusionTexture(cmd); return; } RayTracingShader aoShader = m_PipelineRayTracingResources.aoRaytracing; var aoSettings = VolumeManager.instance.stack.GetComponent <AmbientOcclusion>(); RayTracingSettings rayTracingSettings = VolumeManager.instance.stack.GetComponent <RayTracingSettings>(); using (new ProfilingSample(cmd, "Ray Trace Ambient Occlusion", CustomSamplerId.RaytracingAmbientOcclusion.GetSampler())) { // Grab the acceleration structure for the target camera RayTracingAccelerationStructure accelerationStructure = m_RenderPipeline.RequestAccelerationStructure(); // 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, rayTracingSettings.rayBias.value); 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_RenderPipeline.sharedRTManager.GetDepthStencilBuffer()); cmd.SetRayTracingTextureParam(aoShader, HDShaderIDs._NormalBufferTexture, m_RenderPipeline.sharedRTManager.GetNormalBuffer()); int frameIndex = hdCamera.IsTAAEnabled() ? hdCamera.taaFrameIndex : (int)frameCount % 8; cmd.SetGlobalInt(HDShaderIDs._RaytracingFrameIndex, frameIndex); // Inject the ray-tracing sampling data BlueNoise blueNoise = m_RenderPipeline.GetBlueNoiseManager(); blueNoise.BindDitheredRNGData8SPP(cmd); // Value used to scale the ao intensity cmd.SetRayTracingFloatParam(aoShader, HDShaderIDs._RaytracingAOIntensity, aoSettings.intensity.value); RayCountManager rayCountManager = m_RenderPipeline.GetRayCountManager(); cmd.SetRayTracingIntParam(aoShader, HDShaderIDs._RayCountEnabled, rayCountManager.RayCountIsEnabled()); cmd.SetRayTracingTextureParam(aoShader, HDShaderIDs._RayCountTexture, 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_RenderPipeline.GetTemporalFilter(); temporalFilter.DenoiseBuffer(cmd, hdCamera, m_AOIntermediateBuffer0, ambientOcclusionHistory, m_AOIntermediateBuffer1); // Apply the diffuse denoiser HDDiffuseDenoiser diffuseDenoiser = m_RenderPipeline.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); }
void RenderPathTracing(HDCamera hdCamera, CommandBuffer cmd, RTHandle outputTexture) { RayTracingShader pathTracingShader = m_Asset.renderPipelineRayTracingResources.pathTracing; m_PathTracingSettings = hdCamera.volumeStack.GetComponent <PathTracing>(); // Check the validity of the state before moving on with the computation if (!pathTracingShader || !m_PathTracingSettings.enable.value) { return; } CheckDirtiness(hdCamera); // Inject the ray-tracing sampling data BlueNoise blueNoiseManager = GetBlueNoiseManager(); blueNoiseManager.BindDitheredRNGData256SPP(cmd); // Grab the acceleration structure and the list of HD lights for the target camera RayTracingAccelerationStructure accelerationStructure = RequestAccelerationStructure(); HDRaytracingLightCluster lightCluster = RequestLightCluster(); LightCluster lightClusterSettings = hdCamera.volumeStack.GetComponent <LightCluster>(); RayTracingSettings rayTracingSettings = hdCamera.volumeStack.GetComponent <RayTracingSettings>(); if (!m_SubFrameManager.isRecording) { // If we are recording, the max iteration is set/overridden by the subframe manager, otherwise we read it from the path tracing volume m_SubFrameManager.subFrameCount = (uint)m_PathTracingSettings.maximumSamples.value; } #if UNITY_HDRP_DXR_TESTS_DEFINE if (Application.isPlaying) { m_SubFrameManager.subFrameCount = 1; } #endif uint currentIteration = m_SubFrameManager.iteration; if (currentIteration < m_SubFrameManager.subFrameCount) { // Define the shader pass to use for the path tracing pass cmd.SetRayTracingShaderPass(pathTracingShader, "PathTracingDXR"); // Set the acceleration structure for the pass cmd.SetRayTracingAccelerationStructure(pathTracingShader, HDShaderIDs._RaytracingAccelerationStructureName, accelerationStructure); // Inject the ray-tracing sampling data 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._RaytracingNumSamples, m_SubFrameManager.subFrameCount); cmd.SetGlobalFloat(HDShaderIDs._RaytracingMinRecursion, m_PathTracingSettings.minimumDepth.value); cmd.SetGlobalFloat(HDShaderIDs._RaytracingMaxRecursion, m_PathTracingSettings.maximumDepth.value); cmd.SetGlobalFloat(HDShaderIDs._RaytracingIntensityClamp, m_PathTracingSettings.maximumIntensity.value); cmd.SetGlobalFloat(HDShaderIDs._RaytracingRayBias, rayTracingSettings.rayBias.value); cmd.SetGlobalFloat(HDShaderIDs._RaytracingCameraNearPlane, hdCamera.camera.nearClipPlane); // Set the data for the ray generation cmd.SetGlobalInt(HDShaderIDs._RaytracingSampleIndex, (int)m_SubFrameManager.iteration); // Compute an approximate pixel spread angle value (in radians) cmd.SetGlobalFloat(HDShaderIDs._RaytracingPixelSpreadAngle, GetPixelSpreadAngle(hdCamera.camera.fieldOfView, hdCamera.actualWidth, hdCamera.actualHeight)); // 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()); // Set the data for the ray miss cmd.SetRayTracingIntParam(pathTracingShader, HDShaderIDs._RaytracingCameraSkyEnabled, m_CameraSkyEnabled ? 1 : 0); cmd.SetRayTracingVectorParam(pathTracingShader, HDShaderIDs._RaytracingCameraClearColor, hdCamera.backgroundColorHDR); cmd.SetRayTracingTextureParam(pathTracingShader, HDShaderIDs._SkyTexture, m_SkyManager.GetSkyReflection(hdCamera)); // Additional data for path tracing cmd.SetRayTracingTextureParam(pathTracingShader, HDShaderIDs._RadianceTexture, m_RadianceTexture); cmd.SetRayTracingMatrixParam(pathTracingShader, HDShaderIDs._PixelCoordToViewDirWS, hdCamera.mainViewConstants.pixelCoordToViewDirWS); cmd.SetRayTracingVectorParam(pathTracingShader, HDShaderIDs._PathTracedDoFConstants, ComputeDoFConstants(hdCamera, m_PathTracingSettings)); cmd.SetRayTracingVectorParam(pathTracingShader, HDShaderIDs._InvViewportScaleBias, HDUtils.ComputeInverseViewportScaleBias(hdCamera)); // Run the computation cmd.DispatchRays(pathTracingShader, "RayGen", (uint)hdCamera.actualWidth, (uint)hdCamera.actualHeight, 1); } RenderAccumulation(hdCamera, cmd, m_RadianceTexture, outputTexture, true); }
void BindRayTracedReflectionData(CommandBuffer cmd, HDCamera hdCamera, RayTracingShader reflectionShader, ScreenSpaceReflection 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 reflection pass cmd.SetRayTracingShaderPass(reflectionShader, "IndirectDXR"); // Set the acceleration structure for the pass cmd.SetRayTracingAccelerationStructure(reflectionShader, HDShaderIDs._RaytracingAccelerationStructureName, accelerationStructure); // Global reflection parameters cmd.SetGlobalFloat(HDShaderIDs._RaytracingIntensityClamp, settings.clampValue.value); cmd.SetGlobalFloat(HDShaderIDs._RaytracingReflectionMinSmoothness, settings.minSmoothness.value); cmd.SetGlobalFloat(HDShaderIDs._RaytracingReflectionSmoothnessFadeStart, settings.smoothnessFadeStart.value); cmd.SetGlobalInt(HDShaderIDs._RaytracingIncludeSky, settings.reflectSky.value ? 1 : 0); // Inject the ray generation data cmd.SetGlobalFloat(HDShaderIDs._RaytracingRayBias, rtSettings.rayBias.value); cmd.SetGlobalFloat(HDShaderIDs._RaytracingRayMaxLength, settings.rayLength.value); cmd.SetGlobalInt(HDShaderIDs._RaytracingNumSamples, settings.sampleCount.value); // Inject the ray-tracing sampling data blueNoise.BindDitheredRNGData8SPP(cmd); // Set the data for the ray generation cmd.SetRayTracingTextureParam(reflectionShader, HDShaderIDs._SsrLightingTextureRW, outputLightingBuffer); cmd.SetRayTracingTextureParam(reflectionShader, HDShaderIDs._SsrHitPointTexture, outputHitPointBuffer); cmd.SetRayTracingTextureParam(reflectionShader, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer()); cmd.SetRayTracingTextureParam(reflectionShader, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer()); cmd.SetGlobalTexture(HDShaderIDs._StencilTexture, sharedRTManager.GetDepthStencilBuffer(), RenderTextureSubElement.Stencil); cmd.SetRayTracingIntParams(reflectionShader, HDShaderIDs._SsrStencilBit, (int)StencilUsage.TraceReflectionRay); // Set ray count tex RayCountManager rayCountManager = GetRayCountManager(); cmd.SetGlobalInt(HDShaderIDs._RayCountEnabled, rayCountManager.RayCountIsEnabled()); cmd.SetRayTracingTextureParam(reflectionShader, HDShaderIDs._RayCountTexture, rayCountManager.GetRayCountTexture()); // Compute the pixel spread value cmd.SetGlobalFloat(HDShaderIDs._RaytracingPixelSpreadAngle, GetPixelSpreadAngle(hdCamera.camera.fieldOfView, hdCamera.actualWidth, hdCamera.actualHeight)); // 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); // 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); // Set the data for the ray miss cmd.SetRayTracingTextureParam(reflectionShader, HDShaderIDs._SkyTexture, m_SkyManager.GetSkyReflection(hdCamera)); }
void RenderReflectionsPerformance(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; RTHandle intermediateBuffer0 = GetRayTracingBuffer(InternalRayTracingBuffers.RGBA0); RTHandle intermediateBuffer1 = GetRayTracingBuffer(InternalRayTracingBuffers.RGBA1); // Fetch all the settings var settings = hdCamera.volumeStack.GetComponent <ScreenSpaceReflection>(); LightCluster lightClusterSettings = hdCamera.volumeStack.GetComponent <LightCluster>(); RayTracingSettings rtSettings = hdCamera.volumeStack.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 ProfilingScope(cmd, ProfilingSampler.Get(HDProfileId.RaytracingIntegrateReflection))) { // 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); cmd.SetComputeIntParam(reflectionShaderCS, HDShaderIDs._SsrStencilBit, (int)StencilUsage.TraceReflectionRay); cmd.SetComputeTextureParam(reflectionShaderCS, currentKernel, HDShaderIDs._StencilTexture, m_SharedRTManager.GetDepthStencilBuffer(), 0, RenderTextureSubElement.Stencil); // Bind all the required scalars cmd.SetGlobalFloat(HDShaderIDs._RaytracingIntensityClamp, settings.clampValue.value); cmd.SetGlobalFloat(HDShaderIDs._RaytracingReflectionMinSmoothness, settings.minSmoothness.value); cmd.SetGlobalInt(HDShaderIDs._RaytracingIncludeSky, settings.reflectSky.value ? 1 : 0); // Bind the output buffers cmd.SetComputeTextureParam(reflectionShaderCS, currentKernel, HDShaderIDs._RaytracingDirectionBuffer, intermediateBuffer1); 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, intermediateBuffer1, intermediateBuffer0); // Evaluate the deferred lighting RenderRaytracingDeferredLighting(cmd, deferredParamters, deferredResources); // 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, intermediateBuffer0); cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._SsrHitPointTexture, intermediateBuffer1); 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.SetGlobalFloat(HDShaderIDs._RaytracingReflectionMinSmoothness, settings.minSmoothness.value); cmd.SetGlobalFloat(HDShaderIDs._RaytracingReflectionSmoothnessFadeStart, settings.smoothnessFadeStart.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 ProfilingScope(cmd, ProfilingSampler.Get(HDProfileId.RaytracingFilterReflection))) { if (settings.denoise.value) { // Grab the history buffer RTHandle reflectionHistory = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.RaytracedReflection) ?? hdCamera.AllocHistoryFrameRT((int)HDCameraFrameHistoryType.RaytracedReflection, ReflectionHistoryBufferAllocatorFunction, 1); float historyValidity = 1.0f; #if UNITY_HDRP_DXR_TESTS_DEFINE if (Application.isPlaying) { historyValidity = 0.0f; } else #endif // We need to check if something invalidated the history buffers historyValidity *= ValidRayTracingHistory(hdCamera) ? 1.0f : 0.0f; HDReflectionDenoiser reflectionDenoiser = GetReflectionDenoiser(); reflectionDenoiser.DenoiseBuffer(cmd, hdCamera, settings.denoiserRadius.value, outputTexture, reflectionHistory, intermediateBuffer0, historyValidity: historyValidity); HDUtils.BlitCameraTexture(cmd, intermediateBuffer0, outputTexture); } } }
void RenderPathTracing(HDCamera hdCamera, CommandBuffer cmd, RTHandle outputTexture) { RayTracingShader pathTracingShader = m_Asset.renderPipelineRayTracingResources.pathTracing; m_PathTracingSettings = hdCamera.volumeStack.GetComponent <PathTracing>(); // Check the validity of the state before moving on with the computation if (!pathTracingShader || !m_PathTracingSettings.enable.value) { return; } if (hdCamera.viewCount > 1) { Debug.LogError("Path Tracing is not supported when using XR single-pass rendering."); return; } CheckDirtiness(hdCamera); // Inject the ray-tracing sampling data BlueNoise blueNoiseManager = GetBlueNoiseManager(); blueNoiseManager.BindDitheredRNGData256SPP(cmd); // Grab the acceleration structure and the list of HD lights for the target camera RayTracingAccelerationStructure accelerationStructure = RequestAccelerationStructure(); HDRaytracingLightCluster lightCluster = RequestLightCluster(); LightCluster lightClusterSettings = hdCamera.volumeStack.GetComponent <LightCluster>(); if (!m_SubFrameManager.isRecording) { // If we are recording, the max iteration is set/overridden by the subframe manager, otherwise we read it from the path tracing volume m_SubFrameManager.subFrameCount = (uint)m_PathTracingSettings.maximumSamples.value; } #if UNITY_HDRP_DXR_TESTS_DEFINE if (Application.isPlaying) { m_SubFrameManager.subFrameCount = 1; } #endif CameraData camData = m_SubFrameManager.GetCameraData(hdCamera.camera.GetInstanceID()); if (camData.currentIteration < m_SubFrameManager.subFrameCount) { // Define the shader pass to use for the path tracing pass cmd.SetRayTracingShaderPass(pathTracingShader, "PathTracingDXR"); // Set the acceleration structure for the pass cmd.SetRayTracingAccelerationStructure(pathTracingShader, HDShaderIDs._RaytracingAccelerationStructureName, accelerationStructure); // Inject the ray-tracing sampling data cmd.SetGlobalTexture(HDShaderIDs._OwenScrambledTexture, m_Asset.renderPipelineResources.textures.owenScrambled256Tex); cmd.SetGlobalTexture(HDShaderIDs._ScramblingTexture, m_Asset.renderPipelineResources.textures.scramblingTex); // Update the global constant buffer m_ShaderVariablesRayTracingCB._RaytracingNumSamples = (int)m_SubFrameManager.subFrameCount; m_ShaderVariablesRayTracingCB._RaytracingMinRecursion = m_PathTracingSettings.minimumDepth.value; m_ShaderVariablesRayTracingCB._RaytracingMaxRecursion = m_PathTracingSettings.maximumDepth.value; m_ShaderVariablesRayTracingCB._RaytracingIntensityClamp = m_PathTracingSettings.maximumIntensity.value; m_ShaderVariablesRayTracingCB._RaytracingSampleIndex = (int)camData.currentIteration; ConstantBuffer.PushGlobal(cmd, m_ShaderVariablesRayTracingCB, HDShaderIDs._ShaderVariablesRaytracing); // LightLoop data cmd.SetGlobalBuffer(HDShaderIDs._RaytracingLightCluster, lightCluster.GetCluster()); cmd.SetGlobalBuffer(HDShaderIDs._LightDatasRT, lightCluster.GetLightDatas()); // Set the data for the ray miss cmd.SetRayTracingIntParam(pathTracingShader, HDShaderIDs._RaytracingCameraSkyEnabled, camData.skyEnabled ? 1 : 0); cmd.SetRayTracingVectorParam(pathTracingShader, HDShaderIDs._RaytracingCameraClearColor, hdCamera.backgroundColorHDR); cmd.SetRayTracingTextureParam(pathTracingShader, HDShaderIDs._SkyTexture, m_SkyManager.GetSkyReflection(hdCamera)); // Additional data for path tracing cmd.SetRayTracingTextureParam(pathTracingShader, HDShaderIDs._RadianceTexture, m_RadianceTexture); cmd.SetRayTracingMatrixParam(pathTracingShader, HDShaderIDs._PixelCoordToViewDirWS, hdCamera.mainViewConstants.pixelCoordToViewDirWS); cmd.SetRayTracingVectorParam(pathTracingShader, HDShaderIDs._PathTracedDoFConstants, ComputeDoFConstants(hdCamera, m_PathTracingSettings)); // Run the computation cmd.DispatchRays(pathTracingShader, "RayGen", (uint)hdCamera.actualWidth, (uint)hdCamera.actualHeight, 1); } RenderAccumulation(hdCamera, m_RadianceTexture, outputTexture, true, cmd); }
extern internal static bool IsRayTracingShaderValidForPlatform(RayTracingShader s, ShaderPlatform renderer);
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); } } }
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 BindRayTracedIndirectDiffuseData(CommandBuffer cmd, HDCamera hdCamera, RayTracingShader indirectDiffuseShader, GlobalIllumination settings, LightCluster lightClusterSettings, RayTracingSettings rtSettings) { // 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, 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 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); }
extern public static int GetRayTracingShaderMessageCount([NotNull] RayTracingShader s);
public void RaytracingRecursiveRender(HDCamera hdCamera, CommandBuffer cmd, ScriptableRenderContext renderContext, CullingResults cull) { // First thing to check is: Do we have a valid ray-tracing environment? HDRaytracingEnvironment rtEnvironment = m_RayTracingManager.CurrentEnvironment(); RecursiveRendering recursiveSettings = VolumeManager.instance.stack.GetComponent <RecursiveRendering>(); // Check the validity of the state before computing the effect bool invalidState = !hdCamera.frameSettings.IsEnabled(FrameSettingsField.RayTracing) || rtEnvironment == null || !recursiveSettings.enable.value || m_Asset.currentPlatformRenderPipelineSettings.supportedRaytracingTier == RenderPipelineSettings.RaytracingTier.Tier1; // If any resource or game-object is missing We stop right away if (invalidState) { return; } HDRenderPipeline renderPipeline = m_RayTracingManager.GetRenderPipeline(); RayTracingShader forwardShader = m_Asset.renderPipelineRayTracingResources.forwardRaytracing; Shader raytracingMask = m_Asset.renderPipelineRayTracingResources.raytracingFlagMask; LightCluster lightClusterSettings = VolumeManager.instance.stack.GetComponent <LightCluster>(); // Grab the acceleration structure and the list of HD lights for the target camera RayTracingAccelerationStructure accelerationStructure = m_RayTracingManager.RequestAccelerationStructure(rtEnvironment.raytracedLayerMask); HDRaytracingLightCluster lightCluster = m_RayTracingManager.RequestLightCluster(rtEnvironment.raytracedLayerMask); if (m_RaytracingFlagMaterial == null) { m_RaytracingFlagMaterial = CoreUtils.CreateEngineMaterial(raytracingMask); } // Before going into raytracing, we need to flag which pixels needs to be raytracing EvaluateRaytracingMask(cull, hdCamera, cmd, renderContext); // Define the shader pass to use for the reflection pass cmd.SetRayTracingShaderPass(forwardShader, "ForwardDXR"); // Set the acceleration structure for the pass cmd.SetRayTracingAccelerationStructure(forwardShader, HDShaderIDs._RaytracingAccelerationStructureName, accelerationStructure); // Inject the ray-tracing sampling data cmd.SetRayTracingTextureParam(forwardShader, HDShaderIDs._OwenScrambledTexture, m_Asset.renderPipelineResources.textures.owenScrambledRGBATex); cmd.SetRayTracingTextureParam(forwardShader, HDShaderIDs._ScramblingTexture, m_Asset.renderPipelineResources.textures.scramblingTex); // Inject the ray generation data cmd.SetGlobalFloat(HDShaderIDs._RaytracingRayBias, rtEnvironment.rayBias); cmd.SetGlobalFloat(HDShaderIDs._RaytracingRayMaxLength, recursiveSettings.rayLength.value); cmd.SetGlobalFloat(HDShaderIDs._RaytracingMaxRecursion, recursiveSettings.maxDepth.value); cmd.SetGlobalFloat(HDShaderIDs._RaytracingCameraNearPlane, hdCamera.camera.nearClipPlane); // Set the data for the ray generation cmd.SetRayTracingTextureParam(forwardShader, HDShaderIDs._RaytracingFlagMask, m_RaytracingFlagTarget); cmd.SetRayTracingTextureParam(forwardShader, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer()); cmd.SetRayTracingTextureParam(forwardShader, HDShaderIDs._CameraColorTextureRW, m_CameraColorBuffer); // Set ray count texture cmd.SetRayTracingIntParam(forwardShader, HDShaderIDs._RayCountEnabled, m_RayTracingManager.rayCountManager.RayCountIsEnabled()); cmd.SetRayTracingTextureParam(forwardShader, HDShaderIDs._RayCountTexture, m_RayTracingManager.rayCountManager.GetRayCountTexture()); // Compute an approximate pixel spread angle value (in radians) float pixelSpreadAngle = hdCamera.camera.fieldOfView * (Mathf.PI / 180.0f) / Mathf.Min(hdCamera.actualWidth, hdCamera.actualHeight); cmd.SetGlobalFloat(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); // Set the data for the ray miss cmd.SetRayTracingTextureParam(forwardShader, HDShaderIDs._SkyTexture, m_SkyManager.skyReflection); // If this is the right debug mode and we have at least one light, write the first shadow to the de-noised texture HDRenderPipeline hdrp = (RenderPipelineManager.currentPipeline as HDRenderPipeline); cmd.SetRayTracingTextureParam(forwardShader, HDShaderIDs._RaytracingPrimaryDebug, m_DebugRaytracingTexture); hdrp.PushFullScreenDebugTexture(hdCamera, cmd, m_DebugRaytracingTexture, FullScreenDebugMode.RecursiveTracing); // Run the computation cmd.DispatchRays(forwardShader, m_RayGenShaderName, (uint)hdCamera.actualWidth, (uint)hdCamera.actualHeight, 1); }
extern public static int GetRayGenerationShaderCount([NotNull] RayTracingShader s);
void RenderSubsurfaceScattering(HDCamera hdCamera, CommandBuffer cmd, RTHandle colorBufferRT, RTHandle diffuseBufferRT, RTHandle depthStencilBufferRT, RTHandle depthTextureRT) { if (!hdCamera.frameSettings.IsEnabled(FrameSettingsField.SubsurfaceScattering)) { return; } var settings = hdCamera.volumeStack.GetComponent <SubSurfaceScattering>(); // If ray tracing is enabled for the camera, if the volume override is active and if the RAS is built, we want to do ray traced SSS if (hdCamera.frameSettings.IsEnabled(FrameSettingsField.RayTracing) && settings.rayTracing.value && GetRayTracingState()) { using (new ProfilingScope(cmd, ProfilingSampler.Get(HDProfileId.SubsurfaceScattering))) { // Evaluate the dispatch parameters int areaTileSize = 8; int numTilesXHR = (hdCamera.actualWidth + (areaTileSize - 1)) / areaTileSize; int numTilesYHR = (hdCamera.actualHeight + (areaTileSize - 1)) / areaTileSize; // Clear the integration texture first cmd.SetComputeTextureParam(m_ScreenSpaceShadowsCS, m_ClearShadowTexture, HDShaderIDs._RaytracedShadowIntegration, diffuseBufferRT); cmd.DispatchCompute(m_ScreenSpaceShadowsCS, m_ClearShadowTexture, numTilesXHR, numTilesYHR, hdCamera.viewCount); // Fetch the volume overrides that we shall be using RayTracingShader subSurfaceShader = m_Asset.renderPipelineRayTracingResources.subSurfaceRayTracing; RayTracingSettings rayTracingSettings = hdCamera.volumeStack.GetComponent <RayTracingSettings>(); ComputeShader deferredRayTracing = m_Asset.renderPipelineRayTracingResources.deferredRaytracingCS; // Fetch all the intermediate buffers that we need RTHandle intermediateBuffer0 = GetRayTracingBuffer(InternalRayTracingBuffers.RGBA0); RTHandle intermediateBuffer1 = GetRayTracingBuffer(InternalRayTracingBuffers.RGBA1); RTHandle intermediateBuffer2 = GetRayTracingBuffer(InternalRayTracingBuffers.RGBA2); RTHandle intermediateBuffer3 = GetRayTracingBuffer(InternalRayTracingBuffers.RGBA3); // Grab the acceleration structure for the target camera RayTracingAccelerationStructure accelerationStructure = RequestAccelerationStructure(); // Define the shader pass to use for the reflection pass cmd.SetRayTracingShaderPass(subSurfaceShader, "SubSurfaceDXR"); // Set the acceleration structure for the pass cmd.SetRayTracingAccelerationStructure(subSurfaceShader, HDShaderIDs._RaytracingAccelerationStructureName, accelerationStructure); // Inject the ray-tracing sampling data BlueNoise blueNoise = GetBlueNoiseManager(); blueNoise.BindDitheredRNGData8SPP(cmd); // For every sample that we need to process for (int sampleIndex = 0; sampleIndex < settings.sampleCount.value; ++sampleIndex) { // Inject the ray generation data cmd.SetRayTracingFloatParams(subSurfaceShader, HDShaderIDs._RaytracingRayBias, rayTracingSettings.rayBias.value); cmd.SetRayTracingIntParams(subSurfaceShader, HDShaderIDs._RaytracingNumSamples, settings.sampleCount.value); cmd.SetRayTracingIntParams(subSurfaceShader, HDShaderIDs._RaytracingSampleIndex, sampleIndex); int frameIndex = RayTracingFrameIndex(hdCamera); cmd.SetRayTracingIntParam(subSurfaceShader, HDShaderIDs._RaytracingFrameIndex, frameIndex); // Bind the textures for ray generation cmd.SetRayTracingTextureParam(subSurfaceShader, HDShaderIDs._DepthTexture, sharedRTManager.GetDepthStencilBuffer()); cmd.SetRayTracingTextureParam(subSurfaceShader, HDShaderIDs._NormalBufferTexture, sharedRTManager.GetNormalBuffer()); cmd.SetRayTracingTextureParam(subSurfaceShader, HDShaderIDs._GBufferTexture[0], m_GbufferManager.GetBuffer(0)); cmd.SetRayTracingTextureParam(subSurfaceShader, HDShaderIDs._GBufferTexture[1], m_GbufferManager.GetBuffer(1)); cmd.SetRayTracingTextureParam(subSurfaceShader, HDShaderIDs._GBufferTexture[2], m_GbufferManager.GetBuffer(2)); cmd.SetRayTracingTextureParam(subSurfaceShader, HDShaderIDs._GBufferTexture[3], m_GbufferManager.GetBuffer(3)); cmd.SetRayTracingTextureParam(subSurfaceShader, HDShaderIDs._SSSBufferTexture, m_SSSColor); cmd.SetGlobalTexture(HDShaderIDs._StencilTexture, sharedRTManager.GetDepthStencilBuffer(), RenderTextureSubElement.Stencil); // Set the output textures cmd.SetRayTracingTextureParam(subSurfaceShader, HDShaderIDs._ThroughputTextureRW, intermediateBuffer0); cmd.SetRayTracingTextureParam(subSurfaceShader, HDShaderIDs._NormalTextureRW, intermediateBuffer1); cmd.SetRayTracingTextureParam(subSurfaceShader, HDShaderIDs._PositionTextureRW, intermediateBuffer2); cmd.SetRayTracingTextureParam(subSurfaceShader, HDShaderIDs._DiffuseLightingTextureRW, intermediateBuffer3); // Run the computation cmd.DispatchRays(subSurfaceShader, m_RayGenSubSurfaceShaderName, (uint)hdCamera.actualWidth, (uint)hdCamera.actualHeight, (uint)hdCamera.viewCount); // Now let's do the deferred shading pass on the samples // TODO: Do this only once in the init pass int currentKernel = deferredRayTracing.FindKernel("RaytracingDiffuseDeferred"); // Bind the lightLoop data HDRaytracingLightCluster lightCluster = RequestLightCluster(); lightCluster.BindLightClusterData(cmd); // Bind the input textures cmd.SetComputeTextureParam(deferredRayTracing, currentKernel, HDShaderIDs._DepthTexture, sharedRTManager.GetDepthStencilBuffer()); cmd.SetComputeTextureParam(deferredRayTracing, currentKernel, HDShaderIDs._ThroughputTextureRW, intermediateBuffer0); cmd.SetComputeTextureParam(deferredRayTracing, currentKernel, HDShaderIDs._NormalTextureRW, intermediateBuffer1); cmd.SetComputeTextureParam(deferredRayTracing, currentKernel, HDShaderIDs._PositionTextureRW, intermediateBuffer2); cmd.SetComputeTextureParam(deferredRayTracing, currentKernel, HDShaderIDs._DiffuseLightingTextureRW, intermediateBuffer3); // Bind the output texture (it is used for accumulation read and write) cmd.SetComputeTextureParam(deferredRayTracing, currentKernel, HDShaderIDs._RaytracingLitBufferRW, diffuseBufferRT); // Compute the Lighting cmd.DispatchCompute(deferredRayTracing, currentKernel, numTilesXHR, numTilesYHR, hdCamera.viewCount); } // Grab the history buffer RTHandle subsurfaceHistory = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.RayTracedSubSurface) ?? hdCamera.AllocHistoryFrameRT((int)HDCameraFrameHistoryType.RayTracedSubSurface, SubSurfaceHistoryBufferAllocatorFunction, 1); // Check if we need to invalidate the history float historyValidity = 1.0f; #if UNITY_HDRP_DXR_TESTS_DEFINE if (Application.isPlaying) { historyValidity = 0.0f; } else #endif // We need to check if something invalidated the history buffers historyValidity *= ValidRayTracingHistory(hdCamera) ? 1.0f : 0.0f; // Apply temporal filtering to the buffer HDTemporalFilter temporalFilter = GetTemporalFilter(); temporalFilter.DenoiseBuffer(cmd, hdCamera, diffuseBufferRT, subsurfaceHistory, intermediateBuffer0, singleChannel: false, historyValidity: historyValidity); // Push this version of the texture for debug PushFullScreenDebugTexture(hdCamera, cmd, intermediateBuffer0, FullScreenDebugMode.RayTracedSubSurface); // Combine it with the rest of the lighting m_CombineLightingPass.SetTexture(HDShaderIDs._IrradianceSource, intermediateBuffer0); HDUtils.DrawFullScreen(cmd, m_CombineLightingPass, colorBufferRT, depthStencilBufferRT, shaderPassId: 1); } } else { using (new ProfilingScope(cmd, ProfilingSampler.Get(HDProfileId.SubsurfaceScattering))) { var parameters = PrepareSubsurfaceScatteringParameters(hdCamera); var resources = new SubsurfaceScatteringResources(); resources.colorBuffer = colorBufferRT; resources.diffuseBuffer = diffuseBufferRT; resources.depthStencilBuffer = depthStencilBufferRT; resources.depthTexture = depthTextureRT; resources.cameraFilteringBuffer = m_SSSCameraFilteringBuffer; resources.coarseStencilBuffer = m_SharedRTManager.GetCoarseStencilBuffer(); resources.sssBuffer = m_SSSColor; // For Jimenez we always need an extra buffer, for Disney it depends on platform if (parameters.needTemporaryBuffer) { // Clear the SSS filtering target using (new ProfilingScope(cmd, ProfilingSampler.Get(HDProfileId.ClearSSSFilteringTarget))) { CoreUtils.SetRenderTarget(cmd, m_SSSCameraFilteringBuffer, ClearFlag.Color, Color.clear); } } RenderSubsurfaceScattering(parameters, resources, cmd); } } }
extern public static int GetMissShaderCount([NotNull] RayTracingShader s);
void RaytracingRecursiveRender(HDCamera hdCamera, CommandBuffer cmd, ScriptableRenderContext renderContext, CullingResults cull) { if (!hdCamera.frameSettings.IsEnabled(FrameSettingsField.RayTracing)) { return; } RecursiveRendering recursiveSettings = hdCamera.volumeStack.GetComponent <RecursiveRendering>(); if (!recursiveSettings.enable.value) { return; } // Recursive rendering works as follow: // - Shader have a _RayTracing property // When this property is setup to true, a RayTracingPrepass pass on the material is enabled (otherwise it is disabled) // - Before prepass we render all object with a RayTracingPrepass pass enabled into the depth buffer for performance saving. // Note that we will exclude from the rendering of DepthPrepass, GBuffer and Forward pass the raytraced objects but not from // motion vector pass, so we can still benefit from motion vector. This is handled in VertMesh.hlsl (see below). // However currently when rendering motion vector this will tag the stencil for deferred lighting, and thus could produce overshading. // - After Transparent Depth pass we render all object with a RayTracingPrepass pass enabled into output a mask buffer (need to depth test but not to write depth) // Note: we render two times: one to save performance and the other to write the mask, otherwise if we write the mask in the first pass it // will not take into account the objects which could render on top of the raytracing one (If we want to do that we need to perform the pass after that // the depth buffer is ready, which is after the Gbuffer pass, so we can't save performance). // - During RaytracingRecursiveRender we perform a RayTracingRendering.raytrace call on all pixel tag in the mask // It is require to exclude mesh from regular pass to save performance (for opaque) and get correct result (for transparent) // For this we cull the mesh by setuping their position to NaN if _RayTracing is true and _EnableRecursiveRayTracing true. // We use this method to avoid to have to deal with RenderQueue and it allow to dynamically disabled Recursive rendering // and fallback to classic rasterize transparent this way. The code for the culling is in VertMesh() // If raytracing is disable _EnableRecursiveRayTracing is set to false and no culling happen. // Objects are still render in shadow and motion vector pass to keep their properties. // We render Recursive render object before transparent, so transparent object can be overlayed on top // like lens flare on top of headlight. We write the depth, so it correctly z-test object behind as recursive rendering // re-render everything (Mean we should also support fog and sky into it). using (new ProfilingScope(cmd, ProfilingSampler.Get(HDProfileId.RayTracingRecursiveRendering))) { RayTracingShader forwardShader = m_Asset.renderPipelineRayTracingResources.forwardRaytracing; LightCluster lightClusterSettings = hdCamera.volumeStack.GetComponent <LightCluster>(); RayTracingSettings rtSettings = hdCamera.volumeStack.GetComponent <RayTracingSettings>(); // Grab the acceleration structure and the list of HD lights for the target camera RayTracingAccelerationStructure accelerationStructure = RequestAccelerationStructure(); HDRaytracingLightCluster lightCluster = RequestLightCluster(); // Define the shader pass to use for the reflection pass cmd.SetRayTracingShaderPass(forwardShader, "ForwardDXR"); // Set the acceleration structure for the pass cmd.SetRayTracingAccelerationStructure(forwardShader, HDShaderIDs._RaytracingAccelerationStructureName, accelerationStructure); // Inject the ray-tracing sampling data cmd.SetRayTracingTextureParam(forwardShader, HDShaderIDs._OwenScrambledTexture, m_Asset.renderPipelineResources.textures.owenScrambledRGBATex); cmd.SetRayTracingTextureParam(forwardShader, HDShaderIDs._ScramblingTexture, m_Asset.renderPipelineResources.textures.scramblingTex); // Inject the ray generation data cmd.SetGlobalFloat(HDShaderIDs._RaytracingRayBias, rtSettings.rayBias.value); cmd.SetGlobalFloat(HDShaderIDs._RaytracingRayMaxLength, recursiveSettings.rayLength.value); cmd.SetGlobalFloat(HDShaderIDs._RaytracingMaxRecursion, recursiveSettings.maxDepth.value); cmd.SetGlobalFloat(HDShaderIDs._RaytracingCameraNearPlane, hdCamera.camera.nearClipPlane); // Set the data for the ray generation // Fecth the temporary buffers we shall be using RTHandle flagBuffer = GetRayTracingBuffer(InternalRayTracingBuffers.R0); cmd.SetRayTracingTextureParam(forwardShader, HDShaderIDs._RaytracingFlagMask, flagBuffer); cmd.SetRayTracingTextureParam(forwardShader, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer()); cmd.SetRayTracingTextureParam(forwardShader, HDShaderIDs._CameraColorTextureRW, m_CameraColorBuffer); // Set ray count texture RayCountManager rayCountManager = GetRayCountManager(); cmd.SetGlobalInt(HDShaderIDs._RayCountEnabled, rayCountManager.RayCountIsEnabled()); cmd.SetRayTracingTextureParam(forwardShader, HDShaderIDs._RayCountTexture, rayCountManager.GetRayCountTexture()); // Compute an approximate pixel spread angle value (in radians) cmd.SetGlobalFloat(HDShaderIDs._RaytracingPixelSpreadAngle, GetPixelSpreadAngle(hdCamera.camera.fieldOfView, hdCamera.actualWidth, hdCamera.actualHeight)); // 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); // Set the data for the ray miss cmd.SetRayTracingTextureParam(forwardShader, HDShaderIDs._SkyTexture, m_SkyManager.GetSkyReflection(hdCamera)); // If this is the right debug mode and we have at least one light, write the first shadow to the de-noised texture RTHandle debugBuffer = GetRayTracingBuffer(InternalRayTracingBuffers.RGBA0); cmd.SetRayTracingTextureParam(forwardShader, HDShaderIDs._RaytracingPrimaryDebug, debugBuffer); // Run the computation cmd.DispatchRays(forwardShader, m_RayGenShaderName, (uint)hdCamera.actualWidth, (uint)hdCamera.actualHeight, (uint)hdCamera.viewCount); HDRenderPipeline hdrp = (RenderPipelineManager.currentPipeline as HDRenderPipeline); hdrp.PushFullScreenDebugTexture(hdCamera, cmd, debugBuffer, FullScreenDebugMode.RecursiveRayTracing); } }
extern public static int GetCallableShaderCount([NotNull] RayTracingShader s);
public void RenderReflectionsT1(HDCamera hdCamera, CommandBuffer cmd, RTHandle outputTexture, ScriptableRenderContext renderContext, int frameCount) { // Fetch the required resources HDRaytracingEnvironment rtEnvironment = m_RayTracingManager.CurrentEnvironment(); 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"); // 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()); 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._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); // 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); } // Prepare the components for the deferred lighting DeferredLightingRTParameters deferredParamters = PrepareReflectionDeferredLightingRTParameters(hdCamera, rtEnvironment); DeferredLightingRTResources deferredResources = PrepareDeferredLightingRTResources(m_ReflIntermediateTexture1, m_ReflIntermediateTexture0); // Evaluate the deferred lighting RenderRaytracingDeferredLighting(cmd, deferredParamters, deferredResources); } else { // Bind all the required data for ray tracing BindRayTracedReflectionData(cmd, hdCamera, rtEnvironment, reflectionShaderRT, settings, lightClusterSettings); // 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); } } 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, 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); // 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.denoise.value) { // Grab the history buffer 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.denoiserRadius.value, singleChannel: false); HDUtils.BlitCameraTexture(cmd, m_ReflIntermediateTexture0, outputTexture); } } } }
extern public static int GetCallableShaderParamSize([NotNull] RayTracingShader s, int shaderIndex);
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); // Set the data for the ray miss cmd.SetRayTracingTextureParam(reflectionShader, HDShaderIDs._SkyTexture, m_SkyManager.skyReflection); }
extern internal static ShaderPlatform GetRayTracingShaderPlatformType(RayTracingShader s, int platformIndex);
public 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(); RayTracingShader shadowRayTrace = m_Asset.renderPipelineRayTracingResources.shadowRaytracingRT; ComputeShader shadowsCompute = m_Asset.renderPipelineRayTracingResources.shadowRaytracingCS; ComputeShader shadowFilter = m_Asset.renderPipelineRayTracingResources.shadowFilterCS; // Make sure everything is valid bool invalidState = rtEnvironment == null || hdCamera.frameSettings.litShaderMode != LitShaderMode.Deferred || shadowRayTrace == null || shadowsCompute == null || shadowFilter == null || m_Asset.renderPipelineResources.textures.owenScrambledTex == null || m_Asset.renderPipelineResources.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 shadowHistoryArray = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.RaytracedShadow) ?? hdCamera.AllocHistoryFrameRT((int)HDCameraFrameHistoryType.RaytracedShadow, ShadowHistoryBufferAllocatorFunction, 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(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._OwenScrambledTexture, m_Asset.renderPipelineResources.textures.owenScrambledTex); 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); }