public void Render(HDCamera hdCamera, CommandBuffer cmd, RTHandleSystem.RTHandle outputTexture, ScriptableRenderContext renderContext, CullingResults cull)
{
// First thing to check is: Do we have a valid ray-tracing environment?
HDRaytracingEnvironment rtEnvironement = m_RaytracingManager.CurrentEnvironment();
BlueNoise blueNoise = m_RaytracingManager.GetBlueNoiseManager();
RaytracingShader forwardShader = m_PipelineAsset.renderPipelineResources.shaders.forwardRaytracing;
Shader raytracingMask = m_PipelineAsset.renderPipelineResources.shaders.raytracingFlagMask;
// Try to grab the acceleration structure and the list of HD lights for the target camera
RaytracingAccelerationStructure accelerationStructure = m_RaytracingManager.RequestAccelerationStructure(hdCamera);
HDRaytracingLightCluster lightCluster = m_RaytracingManager.RequestLightCluster(hdCamera);
bool missingResources = rtEnvironement == null || blueNoise == null || forwardShader == null || raytracingMask == null || accelerationStructure == null ||
lightCluster == null || m_PipelineResources.textures.owenScrambledTex == null || m_PipelineResources.textures.scramblingTex == null;
// If any resource or game-object is missing We stop right away
if (missingResources || !rtEnvironement.raytracedObjects)
{
return;
}
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, m_RayGenShaderName, HDShaderIDs._OwenScrambledTexture, m_PipelineResources.textures.owenScrambledTex);
cmd.SetRaytracingTextureParam(forwardShader, m_RayGenShaderName, HDShaderIDs._ScramblingTexture, m_PipelineResources.textures.scramblingTex);
// Inject the ray generation data
cmd.SetGlobalFloat(HDShaderIDs._RaytracingRayBias, rtEnvironement.rayBias);
cmd.SetGlobalFloat(HDShaderIDs._RaytracingRayMaxLength, rtEnvironement.raytracingRayLength);
cmd.SetGlobalFloat(HDShaderIDs._RaytracingMaxRecursion, rtEnvironement.rayMaxDepth);
// Set the data for the ray generation
cmd.SetRaytracingTextureParam(forwardShader, m_RayGenShaderName, HDShaderIDs._RaytracingFlagMask, m_RaytracingFlagTarget);
cmd.SetRaytracingTextureParam(forwardShader, m_RayGenShaderName, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetRaytracingTextureParam(forwardShader, m_RayGenShaderName, HDShaderIDs._CameraColorTextureRW, outputTexture);
// 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(forwardShader, HDShaderIDs._PixelSpreadAngle, pixelSpreadAngle);
// Set the light cluster data if available
{
// LightLoop data
cmd.SetGlobalBuffer(HDShaderIDs._RaytracingLightCluster, lightCluster.GetCluster());
cmd.SetGlobalBuffer(HDShaderIDs._LightDatasRT, lightCluster.GetLightDatas());
cmd.SetGlobalVector(HDShaderIDs._MinClusterPos, lightCluster.GetMinClusterPos());
cmd.SetGlobalVector(HDShaderIDs._MaxClusterPos, lightCluster.GetMaxClusterPos());
cmd.SetGlobalInt(HDShaderIDs._LightPerCellCount, rtEnvironement.maxNumLightsPercell);
cmd.SetGlobalInt(HDShaderIDs._PunctualLightCountRT, lightCluster.GetPunctualLightCount());
cmd.SetGlobalInt(HDShaderIDs._AreaLightCountRT, lightCluster.GetAreaLightCount());
}
// Set the data for the ray miss
cmd.SetRaytracingTextureParam(forwardShader, m_MissShaderName, HDShaderIDs._SkyTexture, m_SkyManager.skyReflection);
// Run the calculus
cmd.DispatchRays(forwardShader, m_RayGenShaderName, (uint)hdCamera.actualWidth, (uint)hdCamera.actualHeight, 1);
}
public void Init(RenderPipelineSettings settings, RenderPipelineResources rpResources, HDRenderPipelineRayTracingResources rayTracingResources, BlueNoise blueNoise, HDRenderPipeline renderPipeline, SharedRTManager sharedRTManager, DebugDisplaySettings currentDebugDisplaySettings)
{
// Keep track of the resources
m_Resources = rpResources;
m_RTResources = rayTracingResources;
// Keep track of the settings
m_Settings = settings;
// Keep track of the render pipeline
m_RenderPipeline = renderPipeline;
// Keep track of the shared RT manager
m_SharedRTManager = sharedRTManager;
// Keep track of the blue noise manager
m_BlueNoise = blueNoise;
// Create the list of environments
m_Environments = new List <HDRaytracingEnvironment>();
// Grab all the ray-tracing graphs that have been created before (in case the order of initialization has not been respected, which happens when we open unity the first time)
HDRaytracingEnvironment[] environmentArray = Object.FindObjectsOfType <HDRaytracingEnvironment>();
for (int envIdx = 0; envIdx < environmentArray.Length; ++envIdx)
{
RegisterEnvironment(environmentArray[envIdx]);
}
// Init the simple denoiser
m_SimpleDenoiser.Init(rayTracingResources, m_SharedRTManager);
// Init the ray count manager
m_RayCountManager.Init(rayTracingResources, currentDebugDisplaySettings);
#if UNITY_EDITOR
// We need to invalidate the acceleration structures in case the hierarchy changed
EditorApplication.hierarchyChanged += OnHierarchyChanged;
#endif
}
public void RenderReflections(HDCamera hdCamera, CommandBuffer cmd, RTHandleSystem.RTHandle outputTexture, ScriptableRenderContext renderContext, uint frameCount)
{
// First thing to check is: Do we have a valid ray-tracing environment?
HDRaytracingEnvironment rtEnvironement = m_RaytracingManager.CurrentEnvironment();
LightLoop lightLoop = m_RaytracingManager.GetLightLoop();
BlueNoise blueNoise = m_RaytracingManager.GetBlueNoiseManager();
ComputeShader reflectionFilter = m_PipelineAsset.renderPipelineResources.shaders.reflectionBilateralFilterCS;
RaytracingShader reflectionShader = m_PipelineAsset.renderPipelineResources.shaders.reflectionRaytracing;
bool invalidState = rtEnvironement == null || blueNoise == null ||
reflectionFilter == null || reflectionShader == null ||
m_PipelineResources.textures.owenScrambledTex == null || m_PipelineResources.textures.scramblingTex == null;
// If no acceleration structure available, end it now
if (invalidState)
{
return;
}
// Grab the acceleration structures and the light cluster to use
RaytracingAccelerationStructure accelerationStructure = m_RaytracingManager.RequestAccelerationStructure(rtEnvironement.reflLayerMask);
HDRaytracingLightCluster lightCluster = m_RaytracingManager.RequestLightCluster(rtEnvironement.reflLayerMask);
// Compute the actual resolution that is needed base on the quality
string targetRayGen = "";
switch (rtEnvironement.reflQualityMode)
{
case HDRaytracingEnvironment.ReflectionsQuality.QuarterRes:
{
targetRayGen = m_RayGenHalfResName;
};
break;
case HDRaytracingEnvironment.ReflectionsQuality.Integration:
{
targetRayGen = m_RayGenIntegrationName;
};
break;
}
// Define the shader pass to use for the reflection pass
cmd.SetRaytracingShaderPass(reflectionShader, "IndirectDXR");
// Set the acceleration structure for the pass
cmd.SetRaytracingAccelerationStructure(reflectionShader, HDShaderIDs._RaytracingAccelerationStructureName, accelerationStructure);
// Inject the ray-tracing sampling data
cmd.SetRaytracingTextureParam(reflectionShader, targetRayGen, HDShaderIDs._OwenScrambledTexture, m_PipelineResources.textures.owenScrambledTex);
cmd.SetRaytracingTextureParam(reflectionShader, targetRayGen, HDShaderIDs._ScramblingTexture, m_PipelineResources.textures.scramblingTex);
// Global reflection parameters
cmd.SetRaytracingFloatParams(reflectionShader, HDShaderIDs._RaytracingIntensityClamp, rtEnvironement.reflClampValue);
cmd.SetRaytracingFloatParams(reflectionShader, HDShaderIDs._RaytracingReflectionMinSmoothness, rtEnvironement.reflMinSmoothness);
cmd.SetRaytracingFloatParams(reflectionShader, HDShaderIDs._RaytracingReflectionMaxDistance, rtEnvironement.reflBlendDistance);
// Inject the ray generation data
cmd.SetGlobalFloat(HDShaderIDs._RaytracingRayBias, rtEnvironement.rayBias);
cmd.SetGlobalFloat(HDShaderIDs._RaytracingRayMaxLength, rtEnvironement.reflRayLength);
cmd.SetRaytracingIntParams(reflectionShader, HDShaderIDs._RaytracingNumSamples, rtEnvironement.reflNumMaxSamples);
int frameIndex = hdCamera.IsTAAEnabled() ? hdCamera.taaFrameIndex : (int)frameCount % 8;
cmd.SetGlobalInt(HDShaderIDs._RaytracingFrameIndex, frameIndex);
// Set the data for the ray generation
cmd.SetRaytracingTextureParam(reflectionShader, targetRayGen, HDShaderIDs._SsrLightingTextureRW, m_LightingTexture);
cmd.SetRaytracingTextureParam(reflectionShader, targetRayGen, HDShaderIDs._SsrHitPointTexture, m_HitPdfTexture);
cmd.SetRaytracingTextureParam(reflectionShader, targetRayGen, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetRaytracingTextureParam(reflectionShader, targetRayGen, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer());
// Set ray count tex
cmd.SetRaytracingIntParam(reflectionShader, HDShaderIDs._RayCountEnabled, m_RaytracingManager.rayCountManager.RayCountIsEnabled());
cmd.SetRaytracingTextureParam(reflectionShader, targetRayGen, HDShaderIDs._RayCountTexture, m_RaytracingManager.rayCountManager.rayCountTexture);
// Compute the pixel spread value
float pixelSpreadAngle = Mathf.Atan(2.0f * Mathf.Tan(hdCamera.camera.fieldOfView * Mathf.PI / 360.0f) / Mathf.Min(hdCamera.actualWidth, hdCamera.actualHeight));
cmd.SetRaytracingFloatParam(reflectionShader, HDShaderIDs._RaytracingPixelSpreadAngle, pixelSpreadAngle);
// LightLoop data
cmd.SetGlobalBuffer(HDShaderIDs._RaytracingLightCluster, lightCluster.GetCluster());
cmd.SetGlobalBuffer(HDShaderIDs._LightDatasRT, lightCluster.GetLightDatas());
cmd.SetGlobalVector(HDShaderIDs._MinClusterPos, lightCluster.GetMinClusterPos());
cmd.SetGlobalVector(HDShaderIDs._MaxClusterPos, lightCluster.GetMaxClusterPos());
cmd.SetGlobalInt(HDShaderIDs._LightPerCellCount, rtEnvironement.maxNumLightsPercell);
cmd.SetGlobalInt(HDShaderIDs._PunctualLightCountRT, lightCluster.GetPunctualLightCount());
cmd.SetGlobalInt(HDShaderIDs._AreaLightCountRT, lightCluster.GetAreaLightCount());
// Note: Just in case, we rebind the directional light data (in case they were not)
cmd.SetGlobalBuffer(HDShaderIDs._DirectionalLightDatas, lightLoop.directionalLightDatas);
cmd.SetGlobalInt(HDShaderIDs._DirectionalLightCount, lightLoop.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] : Texture2D.blackTexture;
cmd.SetRaytracingTextureParam(reflectionShader, targetRayGen, HDShaderIDs._SsrClearCoatMaskTexture, clearCoatMaskTexture);
// Set the data for the ray miss
cmd.SetRaytracingTextureParam(reflectionShader, m_MissShaderName, HDShaderIDs._SkyTexture, m_SkyManager.skyReflection);
// Compute the actual resolution that is needed base on the quality
uint widthResolution = 1, heightResolution = 1;
switch (rtEnvironement.reflQualityMode)
{
case HDRaytracingEnvironment.ReflectionsQuality.QuarterRes:
{
widthResolution = (uint)hdCamera.actualWidth / 2;
heightResolution = (uint)hdCamera.actualHeight / 2;
};
break;
case HDRaytracingEnvironment.ReflectionsQuality.Integration:
{
widthResolution = (uint)hdCamera.actualWidth;
heightResolution = (uint)hdCamera.actualHeight;
};
break;
}
// Force to disable specular lighting
cmd.SetGlobalInt(HDShaderIDs._EnableSpecularLighting, 0);
// Run the calculus
cmd.DispatchRays(reflectionShader, targetRayGen, widthResolution, heightResolution, 1);
// Restore the previous state of specular lighting
cmd.SetGlobalInt(HDShaderIDs._EnableSpecularLighting, hdCamera.frameSettings.IsEnabled(FrameSettingsField.SpecularLighting) ? 1 : 0);
using (new ProfilingSample(cmd, "Filter Reflection", CustomSamplerId.RaytracingFilterReflection.GetSampler()))
{
switch (rtEnvironement.reflQualityMode)
{
case HDRaytracingEnvironment.ReflectionsQuality.QuarterRes:
{
// Fetch the right filter to use
int currentKernel = reflectionFilter.FindKernel("RaytracingReflectionFilter");
// Inject all the parameters for the compute
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._SsrLightingTextureRW, m_LightingTexture);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._SsrHitPointTexture, m_HitPdfTexture);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer());
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, "_NoiseTexture", blueNoise.textureArray16RGB);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, "_VarianceTexture", m_VarianceBuffer);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, "_MinColorRangeTexture", m_MinBoundBuffer);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, "_MaxColorRangeTexture", m_MaxBoundBuffer);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, "_RaytracingReflectionTexture", outputTexture);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._ScramblingTexture, m_PipelineResources.textures.scramblingTex);
cmd.SetComputeIntParam(reflectionFilter, HDShaderIDs._SpatialFilterRadius, rtEnvironement.reflSpatialFilterRadius);
cmd.SetComputeFloatParam(reflectionFilter, HDShaderIDs._RaytracingReflectionMinSmoothness, rtEnvironement.reflMinSmoothness);
// Texture dimensions
int texWidth = outputTexture.rt.width;
int texHeight = outputTexture.rt.height;
// Evaluate the dispatch parameters
int areaTileSize = 8;
int numTilesXHR = (texWidth + (areaTileSize - 1)) / areaTileSize;
int numTilesYHR = (texHeight + (areaTileSize - 1)) / areaTileSize;
// Bind the right texture for clear coat support
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._SsrClearCoatMaskTexture, clearCoatMaskTexture);
// Compute the texture
cmd.DispatchCompute(reflectionFilter, currentKernel, numTilesXHR, numTilesYHR, 1);
int numTilesXFR = (texWidth + (areaTileSize - 1)) / areaTileSize;
int numTilesYFR = (texHeight + (areaTileSize - 1)) / areaTileSize;
RTHandleSystem.RTHandle history = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.RaytracedReflection)
?? hdCamera.AllocHistoryFrameRT((int)HDCameraFrameHistoryType.RaytracedReflection, ReflectionHistoryBufferAllocatorFunction, 1);
// Fetch the right filter to use
currentKernel = reflectionFilter.FindKernel("TemporalAccumulationFilter");
cmd.SetComputeFloatParam(reflectionFilter, HDShaderIDs._TemporalAccumuationWeight, rtEnvironement.reflTemporalAccumulationWeight);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._AccumulatedFrameTexture, history);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._CurrentFrameTexture, outputTexture);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, "_MinColorRangeTexture", m_MinBoundBuffer);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, "_MaxColorRangeTexture", m_MaxBoundBuffer);
cmd.DispatchCompute(reflectionFilter, currentKernel, numTilesXFR, numTilesYFR, 1);
}
break;
case HDRaytracingEnvironment.ReflectionsQuality.Integration:
{
switch (rtEnvironement.reflFilterMode)
{
case HDRaytracingEnvironment.ReflectionsFilterMode.SpatioTemporal:
{
// Grab the history buffer
RTHandleSystem.RTHandle reflectionHistory = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.RaytracedReflection)
?? hdCamera.AllocHistoryFrameRT((int)HDCameraFrameHistoryType.RaytracedReflection, ReflectionHistoryBufferAllocatorFunction, 1);
// Texture dimensions
int texWidth = hdCamera.actualWidth;
int texHeight = hdCamera.actualHeight;
// Evaluate the dispatch parameters
int areaTileSize = 8;
int numTilesX = (texWidth + (areaTileSize - 1)) / areaTileSize;
int numTilesY = (texHeight + (areaTileSize - 1)) / areaTileSize;
int m_KernelFilter = reflectionFilter.FindKernel("RaytracingReflectionTAA");
// Compute the combined TAA frame
var historyScale = new Vector2(hdCamera.actualWidth / (float)reflectionHistory.rt.width, hdCamera.actualHeight / (float)reflectionHistory.rt.height);
cmd.SetComputeVectorParam(reflectionFilter, HDShaderIDs._ScreenToTargetScaleHistory, historyScale);
cmd.SetComputeTextureParam(reflectionFilter, m_KernelFilter, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetComputeTextureParam(reflectionFilter, m_KernelFilter, HDShaderIDs._DenoiseInputTexture, m_LightingTexture);
cmd.SetComputeTextureParam(reflectionFilter, m_KernelFilter, HDShaderIDs._DenoiseOutputTextureRW, m_HitPdfTexture);
cmd.SetComputeTextureParam(reflectionFilter, m_KernelFilter, HDShaderIDs._ReflectionHistorybufferRW, reflectionHistory);
cmd.DispatchCompute(reflectionFilter, m_KernelFilter, numTilesX, numTilesY, 1);
// Output the new history
HDUtils.BlitCameraTexture(cmd, hdCamera, m_HitPdfTexture, reflectionHistory);
m_KernelFilter = reflectionFilter.FindKernel("ReflBilateralFilterH");
// Horizontal pass of the bilateral filter
cmd.SetComputeIntParam(reflectionFilter, HDShaderIDs._RaytracingDenoiseRadius, rtEnvironement.reflFilterRadius);
cmd.SetComputeTextureParam(reflectionFilter, m_KernelFilter, HDShaderIDs._DenoiseInputTexture, reflectionHistory);
cmd.SetComputeTextureParam(reflectionFilter, m_KernelFilter, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetComputeTextureParam(reflectionFilter, m_KernelFilter, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer());
cmd.SetComputeTextureParam(reflectionFilter, m_KernelFilter, HDShaderIDs._DenoiseOutputTextureRW, m_HitPdfTexture);
cmd.DispatchCompute(reflectionFilter, m_KernelFilter, numTilesX, numTilesY, 1);
m_KernelFilter = reflectionFilter.FindKernel("ReflBilateralFilterV");
// Horizontal pass of the bilateral filter
cmd.SetComputeIntParam(reflectionFilter, HDShaderIDs._RaytracingDenoiseRadius, rtEnvironement.reflFilterRadius);
cmd.SetComputeTextureParam(reflectionFilter, m_KernelFilter, HDShaderIDs._DenoiseInputTexture, m_HitPdfTexture);
cmd.SetComputeTextureParam(reflectionFilter, m_KernelFilter, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetComputeTextureParam(reflectionFilter, m_KernelFilter, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer());
cmd.SetComputeTextureParam(reflectionFilter, m_KernelFilter, HDShaderIDs._DenoiseOutputTextureRW, outputTexture);
cmd.DispatchCompute(reflectionFilter, m_KernelFilter, numTilesX, numTilesY, 1);
}
break;
case HDRaytracingEnvironment.ReflectionsFilterMode.None:
{
HDUtils.BlitCameraTexture(cmd, hdCamera, m_LightingTexture, outputTexture);
}
break;
}
}
break;
}
}
}
public void RenderReflectionsT1(HDCamera hdCamera, CommandBuffer cmd, RTHandleSystem.RTHandle outputTexture, ScriptableRenderContext renderContext, int frameCount)
{
// First thing to check is: Do we have a valid ray-tracing environment?
HDRaytracingEnvironment rtEnvironment = m_RayTracingManager.CurrentEnvironment();
// If no ray tracing environment, then we do not want to evaluate this effect
if (rtEnvironment == null)
{
return;
}
// Fetch the required resources
BlueNoise blueNoise = m_RayTracingManager.GetBlueNoiseManager();
RayTracingShader reflectionShaderRT = m_Asset.renderPipelineRayTracingResources.reflectionRaytracingRT;
ComputeShader reflectionShaderCS = m_Asset.renderPipelineRayTracingResources.reflectionRaytracingCS;
ComputeShader reflectionFilter = m_Asset.renderPipelineRayTracingResources.reflectionBilateralFilterCS;
// Fetch all the settings
var settings = VolumeManager.instance.stack.GetComponent <ScreenSpaceReflection>();
LightCluster lightClusterSettings = VolumeManager.instance.stack.GetComponent <LightCluster>();
if (settings.deferredMode.value)
{
// Fetch the new sample kernel
int currentKernel = reflectionShaderCS.FindKernel(settings.fullResolution.value ? "RaytracingReflectionsFullRes" : "RaytracingReflectionsHalfRes");
// Bind all the required textures
cmd.SetComputeTextureParam(reflectionShaderCS, currentKernel, HDShaderIDs._OwenScrambledTexture, m_Asset.renderPipelineResources.textures.owenScrambledTex);
cmd.SetComputeTextureParam(reflectionShaderCS, currentKernel, HDShaderIDs._ScramblingTexture, m_Asset.renderPipelineResources.textures.scramblingTex);
cmd.SetComputeTextureParam(reflectionShaderCS, currentKernel, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetComputeTextureParam(reflectionShaderCS, currentKernel, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer());
RenderTargetIdentifier clearCoatMaskTexture = hdCamera.frameSettings.litShaderMode == LitShaderMode.Deferred ? m_GbufferManager.GetBuffersRTI()[2] : TextureXR.GetBlackTexture();
cmd.SetComputeTextureParam(reflectionShaderCS, currentKernel, HDShaderIDs._SsrClearCoatMaskTexture, clearCoatMaskTexture);
// Bind all the required scalars
cmd.SetComputeFloatParam(reflectionShaderCS, HDShaderIDs._RaytracingIntensityClamp, settings.clampValue.value);
cmd.SetComputeFloatParam(reflectionShaderCS, HDShaderIDs._RaytracingReflectionMinSmoothness, settings.minSmoothness.value);
cmd.SetComputeIntParam(reflectionShaderCS, HDShaderIDs._RaytracingReflectSky, settings.reflectSky.value ? 1 : 0);
// Bind the sampling data
int frameIndex = hdCamera.IsTAAEnabled() ? hdCamera.taaFrameIndex : (int)m_FrameCount % 8;
cmd.SetComputeIntParam(reflectionShaderCS, HDShaderIDs._RaytracingFrameIndex, frameIndex);
// Bind the output buffers
cmd.SetComputeTextureParam(reflectionShaderCS, currentKernel, HDShaderIDs._RaytracingDirectionBuffer, m_ReflIntermediateTexture1);
// Texture dimensions
int texWidth = hdCamera.actualWidth;
int texHeight = hdCamera.actualHeight;
if (settings.fullResolution.value)
{
// Evaluate the dispatch parameters
int areaTileSize = 8;
int numTilesXHR = (texWidth + (areaTileSize - 1)) / areaTileSize;
int numTilesYHR = (texHeight + (areaTileSize - 1)) / areaTileSize;
// Compute the directions
cmd.DispatchCompute(reflectionShaderCS, currentKernel, numTilesXHR, numTilesYHR, 1);
}
else
{
// Evaluate the dispatch parameters
int areaTileSize = 8;
int numTilesXHR = (texWidth / 2 + (areaTileSize - 1)) / areaTileSize;
int numTilesYHR = (texHeight / 2 + (areaTileSize - 1)) / areaTileSize;
// Compute the directions
cmd.DispatchCompute(reflectionShaderCS, currentKernel, numTilesXHR, numTilesYHR, 1);
}
// Evaluate the deferred lighting
cmd.SetGlobalInt(HDShaderIDs._RaytracingReflectSky, settings.reflectSky.value ? 1 : 0);
RenderRaytracingDeferredLighting(cmd, hdCamera, rtEnvironment, m_ReflIntermediateTexture1, settings.rayBinning.value, rtEnvironment.reflLayerMask, settings.rayLength.value, m_ReflIntermediateTexture0, disableSpecularLighting: true, halfResolution: !settings.fullResolution.value);
}
else
{
// Bind all the required data for ray tracing
BindRayTracedReflectionData(cmd, hdCamera, rtEnvironment, reflectionShaderRT, settings, lightClusterSettings);
// Set the data for the ray miss
cmd.SetRayTracingTextureParam(reflectionShaderRT, HDShaderIDs._SkyTexture, m_SkyManager.skyReflection);
// Force to disable specular lighting
cmd.SetGlobalInt(HDShaderIDs._EnableSpecularLighting, 0);
// Run the computation
if (settings.fullResolution.value)
{
cmd.DispatchRays(reflectionShaderRT, m_RayGenReflectionFullResName, (uint)hdCamera.actualWidth, (uint)hdCamera.actualHeight, 1);
}
else
{
// Run the computation
cmd.DispatchRays(reflectionShaderRT, m_RayGenReflectionHalfResName, (uint)(hdCamera.actualWidth / 2), (uint)(hdCamera.actualHeight / 2), 1);
}
// Restore the previous state of specular lighting
cmd.SetGlobalInt(HDShaderIDs._EnableSpecularLighting, hdCamera.frameSettings.IsEnabled(FrameSettingsField.SpecularLighting) ? 1 : 0);
}
using (new ProfilingSample(cmd, "Filter Reflection", CustomSamplerId.RaytracingFilterReflection.GetSampler()))
{
// Fetch the right filter to use
int currentKernel = 0;
if (settings.fullResolution.value)
{
currentKernel = reflectionFilter.FindKernel("ReflectionIntegrationUpscaleFullRes");
}
else
{
currentKernel = reflectionFilter.FindKernel("ReflectionIntegrationUpscaleHalfRes");
}
// Inject all the parameters for the compute
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._SsrLightingTextureRW, m_ReflIntermediateTexture0);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._SsrHitPointTexture, m_ReflIntermediateTexture1);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer());
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, "_NoiseTexture", blueNoise.textureArray16RGB);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, "_RaytracingReflectionTexture", outputTexture);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._ScramblingTexture, m_Asset.renderPipelineResources.textures.scramblingTex);
cmd.SetComputeIntParam(reflectionFilter, HDShaderIDs._SpatialFilterRadius, settings.spatialFilterRadius.value);
cmd.SetComputeIntParam(reflectionFilter, HDShaderIDs._RaytracingDenoiseRadius, settings.enableFilter.value ? settings.filterRadius.value : 0);
cmd.SetComputeFloatParam(reflectionFilter, HDShaderIDs._RaytracingReflectionMinSmoothness, settings.minSmoothness.value);
// Texture dimensions
int texWidth = hdCamera.actualWidth;
int texHeight = hdCamera.actualHeight;
// Evaluate the dispatch parameters
int areaTileSize = 8;
int numTilesXHR = (texWidth + (areaTileSize - 1)) / areaTileSize;
int numTilesYHR = (texHeight + (areaTileSize - 1)) / areaTileSize;
// Bind the right texture for clear coat support
RenderTargetIdentifier clearCoatMaskTexture = hdCamera.frameSettings.litShaderMode == LitShaderMode.Deferred ? m_GbufferManager.GetBuffersRTI()[2] : TextureXR.GetBlackTexture();
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._SsrClearCoatMaskTexture, clearCoatMaskTexture);
// Compute the texture
cmd.DispatchCompute(reflectionFilter, currentKernel, numTilesXHR, numTilesYHR, 1);
using (new ProfilingSample(cmd, "Filter Reflection", CustomSamplerId.RaytracingFilterReflection.GetSampler()))
{
if (settings.enableFilter.value)
{
// Grab the history buffer
RTHandleSystem.RTHandle reflectionHistory = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.RaytracedReflection)
?? hdCamera.AllocHistoryFrameRT((int)HDCameraFrameHistoryType.RaytracedReflection, ReflectionHistoryBufferAllocatorFunction, 1);
HDSimpleDenoiser simpleDenoiser = m_RayTracingManager.GetSimpleDenoiser();
simpleDenoiser.DenoiseBuffer(cmd, hdCamera, outputTexture, reflectionHistory, m_ReflIntermediateTexture0, settings.filterRadius.value, singleChannel: false);
HDUtils.BlitCameraTexture(cmd, m_ReflIntermediateTexture0, outputTexture);
}
}
}
}
public bool RenderAreaShadows(HDCamera hdCamera, CommandBuffer cmd, ScriptableRenderContext renderContext, uint frameCount)
{
// NOTE: Here we cannot clear the area shadow texture because it is a texture array. So we need to bind it and make sure no material will try to read it in the shaders
BindShadowTexture(cmd);
// Let's check all the resources and states to see if we should render the effect
HDRaytracingEnvironment rtEnvironement = m_RaytracingManager.CurrentEnvironment();
BlueNoise blueNoise = m_RaytracingManager.GetBlueNoiseManager();
RaytracingShader shadowsShader = m_PipelineAsset.renderPipelineResources.shaders.shadowsRaytracing;
ComputeShader bilateralFilter = m_PipelineAsset.renderPipelineResources.shaders.areaBillateralFilterCS;
bool invalidState = rtEnvironement == null || blueNoise == null || !rtEnvironement.raytracedShadows || shadowsShader == null || bilateralFilter == null || hdCamera.frameSettings.litShaderMode != LitShaderMode.Deferred ||
m_PipelineResources.textures.owenScrambledTex == null || m_PipelineResources.textures.scramblingTex == null;
// Try to grab the acceleration structure for the target camera
RaytracingAccelerationStructure accelerationStructure = m_RaytracingManager.RequestAccelerationStructure(hdCamera);
// If invalid state or ray-tracing acceleration structure, we stop right away
if (invalidState || accelerationStructure == null)
{
return(false);
}
// Fetch the filter kernel
m_KernelFilter = bilateralFilter.FindKernel("AreaBilateralShadow");
// Define the shader pass to use for the reflection pass
cmd.SetRaytracingShaderPass(shadowsShader, "VisibilityDXR");
// Set the acceleration structure for the pass
cmd.SetRaytracingAccelerationStructure(shadowsShader, HDShaderIDs._RaytracingAccelerationStructureName, accelerationStructure);
// Inject the ray-tracing sampling data
cmd.SetRaytracingTextureParam(shadowsShader, m_RayGenShaderName, HDShaderIDs._OwenScrambledTexture, m_PipelineResources.textures.owenScrambledTex);
cmd.SetRaytracingTextureParam(shadowsShader, m_RayGenShaderName, HDShaderIDs._ScramblingTexture, m_PipelineResources.textures.scramblingTex);
int frameIndex = hdCamera.IsTAAEnabled() ? hdCamera.taaFrameIndex : (int)frameCount % 8;
cmd.SetGlobalInt(HDShaderIDs._RaytracingFrameIndex, frameIndex);
// Inject the ray generation data
cmd.SetGlobalFloat(HDShaderIDs._RaytracingRayBias, rtEnvironement.rayBias);
int numLights = m_LightLoop.m_lightList.lights.Count;
for (int lightIdx = 0; lightIdx < numLights; ++lightIdx)
{
// If this is not a rectangular area light or it won't have shadows, skip it
if (m_LightLoop.m_lightList.lights[lightIdx].lightType != GPULightType.Rectangle || m_LightLoop.m_lightList.lights[lightIdx].shadowIndex == -1)
{
continue;
}
using (new ProfilingSample(cmd, "Raytrace Area Shadow", CustomSamplerId.RaytracingShadowIntegration.GetSampler()))
{
LightData currentLight = m_LightLoop.m_lightList.lights[lightIdx];
// We need to build the world to area light matrix
worldToLocalArea.SetColumn(0, currentLight.right);
worldToLocalArea.SetColumn(1, currentLight.up);
worldToLocalArea.SetColumn(2, currentLight.forward);
// Compensate the relative rendering if active
Vector3 lightPositionWS = currentLight.positionRWS;
if (ShaderConfig.s_CameraRelativeRendering != 0)
{
lightPositionWS += hdCamera.camera.transform.position;
}
worldToLocalArea.SetColumn(3, lightPositionWS);
worldToLocalArea.m33 = 1.0f;
worldToLocalArea = worldToLocalArea.inverse;
// Inject the light data
cmd.SetRaytracingBufferParam(shadowsShader, m_RayGenShaderName, HDShaderIDs._LightDatas, m_LightLoop.lightDatas);
cmd.SetRaytracingIntParam(shadowsShader, HDShaderIDs._RaytracingTargetAreaLight, lightIdx);
cmd.SetRaytracingIntParam(shadowsShader, HDShaderIDs._RaytracingNumSamples, rtEnvironement.shadowNumSamples);
cmd.SetRaytracingMatrixParam(shadowsShader, HDShaderIDs._RaytracingAreaWorldToLocal, worldToLocalArea);
// Set the data for the ray generation
cmd.SetRaytracingTextureParam(shadowsShader, m_RayGenShaderName, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetRaytracingTextureParam(shadowsShader, m_RayGenShaderName, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer());
cmd.SetRaytracingTextureParam(shadowsShader, m_RayGenShaderName, HDShaderIDs._GBufferTexture[0], m_GbufferManager.GetBuffer(0));
cmd.SetRaytracingTextureParam(shadowsShader, m_RayGenShaderName, HDShaderIDs._GBufferTexture[1], m_GbufferManager.GetBuffer(1));
cmd.SetRaytracingTextureParam(shadowsShader, m_RayGenShaderName, HDShaderIDs._GBufferTexture[2], m_GbufferManager.GetBuffer(2));
cmd.SetRaytracingTextureParam(shadowsShader, m_RayGenShaderName, HDShaderIDs._GBufferTexture[3], m_GbufferManager.GetBuffer(3));
cmd.SetRaytracingIntParam(shadowsShader, HDShaderIDs._RayCountEnabled, m_RaytracingManager.rayCountManager.rayCountEnabled);
cmd.SetRaytracingTextureParam(shadowsShader, m_RayGenShaderName, HDShaderIDs._RayCountTexture, m_RaytracingManager.rayCountManager.rayCountTex);
// Set the output textures
cmd.SetRaytracingTextureParam(shadowsShader, m_RayGenShaderName, _SNBuffer, m_SNBuffer);
cmd.SetRaytracingTextureParam(shadowsShader, m_RayGenShaderName, _UNBuffer, m_UNBuffer);
cmd.SetRaytracingTextureParam(shadowsShader, m_RayGenShaderName, _UBuffer, m_UBuffer);
// Run the shadow evaluation
cmd.DispatchRays(shadowsShader, m_RayGenShaderName, (uint)hdCamera.actualWidth, (uint)hdCamera.actualHeight, 1);
}
using (new ProfilingSample(cmd, "Combine Area Shadow", CustomSamplerId.RaytracingShadowCombination.GetSampler()))
{
// Inject all the parameters for the compute
cmd.SetComputeTextureParam(bilateralFilter, m_KernelFilter, _SNBuffer, m_SNBuffer);
cmd.SetComputeTextureParam(bilateralFilter, m_KernelFilter, _UNBuffer, m_UNBuffer);
cmd.SetComputeTextureParam(bilateralFilter, m_KernelFilter, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetComputeTextureParam(bilateralFilter, m_KernelFilter, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer());
cmd.SetComputeIntParam(bilateralFilter, _DenoiseRadius, rtEnvironement.shadowFilterRadius);
cmd.SetComputeFloatParam(bilateralFilter, _GaussianSigma, rtEnvironement.shadowFilterSigma);
cmd.SetComputeIntParam(bilateralFilter, HDShaderIDs._RaytracingShadowSlot, m_LightLoop.m_lightList.lights[lightIdx].shadowIndex);
// Set the output slot
cmd.SetComputeTextureParam(bilateralFilter, m_KernelFilter, HDShaderIDs._AreaShadowTextureRW, m_AreaShadowTextureArray);
// Texture dimensions
int texWidth = m_AreaShadowTextureArray.rt.width;
int texHeight = m_AreaShadowTextureArray.rt.width;
// Evaluate the dispatch parameters
int areaTileSize = 8;
int numTilesX = (texWidth + (areaTileSize - 1)) / areaTileSize;
int numTilesY = (texHeight + (areaTileSize - 1)) / areaTileSize;
// Compute the texture
cmd.DispatchCompute(bilateralFilter, m_KernelFilter, numTilesX, numTilesY, 1);
}
}
return(true);
}
public void RenderReflectionsT2(HDCamera hdCamera, CommandBuffer cmd, RTHandleSystem.RTHandle outputTexture, ScriptableRenderContext renderContext, int frameCount)
{
// First thing to check is: Do we have a valid ray-tracing environment?
HDRaytracingEnvironment rtEnvironment = m_RaytracingManager.CurrentEnvironment();
HDRenderPipeline renderPipeline = m_RaytracingManager.GetRenderPipeline();
BlueNoise blueNoise = m_RaytracingManager.GetBlueNoiseManager();
ComputeShader reflectionFilter = m_PipelineAsset.renderPipelineRayTracingResources.reflectionBilateralFilterCS;
RayTracingShader reflectionShader = m_PipelineAsset.renderPipelineRayTracingResources.reflectionRaytracing;
RenderPipelineSettings.RaytracingTier currentTier = m_PipelineAsset.currentPlatformRenderPipelineSettings.supportedRaytracingTier;
bool invalidState = rtEnvironment == null || blueNoise == null ||
reflectionFilter == null || reflectionShader == null ||
m_PipelineResources.textures.owenScrambledTex == null || m_PipelineResources.textures.scramblingTex == null;
// If no acceleration structure available, end it now
if (invalidState)
{
return;
}
var settings = VolumeManager.instance.stack.GetComponent <ScreenSpaceReflection>();
LightCluster lightClusterSettings = VolumeManager.instance.stack.GetComponent <LightCluster>();
// Grab the acceleration structures and the light cluster to use
RayTracingAccelerationStructure accelerationStructure = m_RaytracingManager.RequestAccelerationStructure(rtEnvironment.reflLayerMask);
HDRaytracingLightCluster lightCluster = m_RaytracingManager.RequestLightCluster(rtEnvironment.reflLayerMask);
// Compute the actual resolution that is needed base on the quality
string targetRayGen = m_RayGenIntegrationName;
// Define the shader pass to use for the reflection pass
cmd.SetRayTracingShaderPass(reflectionShader, "IndirectDXR");
// Set the acceleration structure for the pass
cmd.SetRayTracingAccelerationStructure(reflectionShader, HDShaderIDs._RaytracingAccelerationStructureName, accelerationStructure);
// Inject the ray-tracing sampling data
cmd.SetRayTracingTextureParam(reflectionShader, HDShaderIDs._OwenScrambledTexture, m_PipelineResources.textures.owenScrambledTex);
cmd.SetRayTracingTextureParam(reflectionShader, HDShaderIDs._ScramblingTexture, m_PipelineResources.textures.scramblingTex);
// Global reflection parameters
cmd.SetRayTracingFloatParams(reflectionShader, HDShaderIDs._RaytracingIntensityClamp, settings.clampValue.value);
cmd.SetRayTracingFloatParams(reflectionShader, HDShaderIDs._RaytracingReflectionMinSmoothness, settings.minSmoothness.value);
cmd.SetRayTracingFloatParams(reflectionShader, HDShaderIDs._RaytracingReflectSky, settings.reflectSky.value ? 1 : 0);
// Inject the ray generation data
cmd.SetGlobalFloat(HDShaderIDs._RaytracingRayBias, rtEnvironment.rayBias);
cmd.SetGlobalFloat(HDShaderIDs._RaytracingRayMaxLength, settings.rayLength.value);
cmd.SetRayTracingIntParams(reflectionShader, HDShaderIDs._RaytracingNumSamples, settings.numSamples.value);
int frameIndex = hdCamera.IsTAAEnabled() ? hdCamera.taaFrameIndex : (int)frameCount % 8;
cmd.SetGlobalInt(HDShaderIDs._RaytracingFrameIndex, frameIndex);
// Set the data for the ray generation
cmd.SetRayTracingTextureParam(reflectionShader, HDShaderIDs._SsrLightingTextureRW, m_LightingTexture);
cmd.SetRayTracingTextureParam(reflectionShader, HDShaderIDs._SsrHitPointTexture, m_HitPdfTexture);
cmd.SetRayTracingTextureParam(reflectionShader, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetRayTracingTextureParam(reflectionShader, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer());
// Set ray count tex
cmd.SetRayTracingIntParam(reflectionShader, HDShaderIDs._RayCountEnabled, m_RaytracingManager.rayCountManager.RayCountIsEnabled());
cmd.SetRayTracingTextureParam(reflectionShader, HDShaderIDs._RayCountTexture, m_RaytracingManager.rayCountManager.rayCountTexture);
// Compute the pixel spread value
float pixelSpreadAngle = Mathf.Atan(2.0f * Mathf.Tan(hdCamera.camera.fieldOfView * Mathf.PI / 360.0f) / Mathf.Min(hdCamera.actualWidth, hdCamera.actualHeight));
cmd.SetRayTracingFloatParam(reflectionShader, HDShaderIDs._RaytracingPixelSpreadAngle, pixelSpreadAngle);
// LightLoop data
cmd.SetGlobalBuffer(HDShaderIDs._RaytracingLightCluster, lightCluster.GetCluster());
cmd.SetGlobalBuffer(HDShaderIDs._LightDatasRT, lightCluster.GetLightDatas());
cmd.SetGlobalVector(HDShaderIDs._MinClusterPos, lightCluster.GetMinClusterPos());
cmd.SetGlobalVector(HDShaderIDs._MaxClusterPos, lightCluster.GetMaxClusterPos());
cmd.SetGlobalInt(HDShaderIDs._LightPerCellCount, lightClusterSettings.maxNumLightsPercell.value);
cmd.SetGlobalInt(HDShaderIDs._PunctualLightCountRT, lightCluster.GetPunctualLightCount());
cmd.SetGlobalInt(HDShaderIDs._AreaLightCountRT, lightCluster.GetAreaLightCount());
// Note: Just in case, we rebind the directional light data (in case they were not)
cmd.SetGlobalBuffer(HDShaderIDs._DirectionalLightDatas, renderPipeline.m_LightLoopLightData.directionalLightData);
cmd.SetGlobalInt(HDShaderIDs._DirectionalLightCount, renderPipeline.m_lightList.directionalLights.Count);
// Evaluate the clear coat mask texture based on the lit shader mode
RenderTargetIdentifier clearCoatMaskTexture = hdCamera.frameSettings.litShaderMode == LitShaderMode.Deferred ? m_GbufferManager.GetBuffersRTI()[2] : TextureXR.GetBlackTexture();
cmd.SetRayTracingTextureParam(reflectionShader, HDShaderIDs._SsrClearCoatMaskTexture, clearCoatMaskTexture);
// Set the data for the ray miss
cmd.SetRayTracingTextureParam(reflectionShader, HDShaderIDs._SkyTexture, m_SkyManager.skyReflection);
// Compute the actual resolution that is needed base on the quality
uint widthResolution = (uint)hdCamera.actualWidth;
uint heightResolution = (uint)hdCamera.actualHeight;
// Force to disable specular lighting
cmd.SetGlobalInt(HDShaderIDs._EnableSpecularLighting, 0);
// Run the computation
cmd.DispatchRays(reflectionShader, targetRayGen, widthResolution, heightResolution, 1);
// Restore the previous state of specular lighting
cmd.SetGlobalInt(HDShaderIDs._EnableSpecularLighting, hdCamera.frameSettings.IsEnabled(FrameSettingsField.SpecularLighting) ? 1 : 0);
using (new ProfilingSample(cmd, "Filter Reflection", CustomSamplerId.RaytracingFilterReflection.GetSampler()))
{
if (settings.enableFilter.value)
{
// Grab the history buffer
RTHandleSystem.RTHandle reflectionHistory = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.RaytracedReflection)
?? hdCamera.AllocHistoryFrameRT((int)HDCameraFrameHistoryType.RaytracedReflection, ReflectionHistoryBufferAllocatorFunction, 1);
// Texture dimensions
int texWidth = hdCamera.actualWidth;
int texHeight = hdCamera.actualHeight;
// Evaluate the dispatch parameters
int areaTileSize = 8;
int numTilesX = (texWidth + (areaTileSize - 1)) / areaTileSize;
int numTilesY = (texHeight + (areaTileSize - 1)) / areaTileSize;
int m_KernelFilter = reflectionFilter.FindKernel("RaytracingReflectionTAA");
// Compute the combined TAA frame
var historyScale = new Vector2(hdCamera.actualWidth / (float)reflectionHistory.rt.width, hdCamera.actualHeight / (float)reflectionHistory.rt.height);
cmd.SetComputeVectorParam(reflectionFilter, HDShaderIDs._RTHandleScaleHistory, historyScale);
cmd.SetComputeTextureParam(reflectionFilter, m_KernelFilter, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetComputeTextureParam(reflectionFilter, m_KernelFilter, HDShaderIDs._DenoiseInputTexture, m_LightingTexture);
cmd.SetComputeTextureParam(reflectionFilter, m_KernelFilter, HDShaderIDs._DenoiseOutputTextureRW, m_HitPdfTexture);
cmd.SetComputeTextureParam(reflectionFilter, m_KernelFilter, HDShaderIDs._ReflectionHistorybufferRW, reflectionHistory);
cmd.DispatchCompute(reflectionFilter, m_KernelFilter, numTilesX, numTilesY, 1);
// Output the new history
HDUtils.BlitCameraTexture(cmd, m_HitPdfTexture, reflectionHistory);
m_KernelFilter = reflectionFilter.FindKernel("ReflBilateralFilterH");
// Horizontal pass of the bilateral filter
cmd.SetComputeIntParam(reflectionFilter, HDShaderIDs._RaytracingDenoiseRadius, settings.filterRadius.value);
cmd.SetComputeTextureParam(reflectionFilter, m_KernelFilter, HDShaderIDs._DenoiseInputTexture, reflectionHistory);
cmd.SetComputeTextureParam(reflectionFilter, m_KernelFilter, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetComputeTextureParam(reflectionFilter, m_KernelFilter, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer());
cmd.SetComputeTextureParam(reflectionFilter, m_KernelFilter, HDShaderIDs._DenoiseOutputTextureRW, m_HitPdfTexture);
cmd.DispatchCompute(reflectionFilter, m_KernelFilter, numTilesX, numTilesY, 1);
m_KernelFilter = reflectionFilter.FindKernel("ReflBilateralFilterV");
// Horizontal pass of the bilateral filter
cmd.SetComputeIntParam(reflectionFilter, HDShaderIDs._RaytracingDenoiseRadius, settings.filterRadius.value);
cmd.SetComputeTextureParam(reflectionFilter, m_KernelFilter, HDShaderIDs._DenoiseInputTexture, m_HitPdfTexture);
cmd.SetComputeTextureParam(reflectionFilter, m_KernelFilter, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetComputeTextureParam(reflectionFilter, m_KernelFilter, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer());
cmd.SetComputeTextureParam(reflectionFilter, m_KernelFilter, HDShaderIDs._DenoiseOutputTextureRW, outputTexture);
cmd.DispatchCompute(reflectionFilter, m_KernelFilter, numTilesX, numTilesY, 1);
}
else
{
HDUtils.BlitCameraTexture(cmd, m_LightingTexture, outputTexture);
}
}
}
public void Init(RenderPipelineSettings settings, RenderPipelineResources resources, BlueNoise blueNoise, LightLoop lightloop, SharedRTManager sharedRTManager)
{
// Keep track of the resources
m_Resources = resources;
// Keep track of the settings
m_Settings = settings;
// Keep track of the lightloop
m_LightLoop = lightloop;
// Keep track of the shared RT manager
m_SharedRTManager = sharedRTManager;
// Keep track of the blue noise manager
m_BlueNoise = blueNoise;
// Create the list of environments
m_Environments = new List <HDRaytracingEnvironment>();
// Grab all the ray-tracing graphs that have been created before (in case the order of initialization has not been respected, which happens when we open unity the first time)
HDRaytracingEnvironment[] environmentArray = Object.FindObjectsOfType <HDRaytracingEnvironment>();
for (int envIdx = 0; envIdx < environmentArray.Length; ++envIdx)
{
RegisterEnvironment(environmentArray[envIdx]);
}
// keep track of all the graphs that are to be supported
m_Filters = new List <HDRayTracingFilter>();
// Create the sub-scenes structure
m_SubScenes = new Dictionary <int, HDRayTracingSubScene>();
// The list of masks that are currently requested
m_LayerMasks = new List <int>();
// Let's start by building the "default" sub-scene (used by the scene camera)
HDRayTracingSubScene defaultSubScene = new HDRayTracingSubScene();
defaultSubScene.mask = m_Settings.editorRaytracingFilterLayerMask.value;
defaultSubScene.persistent = true;
BuildSubSceneStructure(ref defaultSubScene);
m_SubScenes.Add(m_Settings.editorRaytracingFilterLayerMask.value, defaultSubScene);
m_LayerMasks.Add(m_Settings.editorRaytracingFilterLayerMask.value);
// Grab all the ray-tracing graphs that have been created before
HDRayTracingFilter[] filterArray = Object.FindObjectsOfType <HDRayTracingFilter>();
for (int filterIdx = 0; filterIdx < filterArray.Length; ++filterIdx)
{
RegisterFilter(filterArray[filterIdx]);
}
m_RayCountManager.Init(resources);
#if UNITY_EDITOR
// We need to invalidate the acceleration structures in case the hierarchy changed
EditorApplication.hierarchyChanged += OnHierarchyChanged;
#endif
}
