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();
// If no acceleration structure available, end it now
if (rtEnvironment == null)
{
return;
}
// Fetch the shaders that we will be using
ComputeShader reflectionFilter = m_Asset.renderPipelineRayTracingResources.reflectionBilateralFilterCS;
RayTracingShader reflectionShader = m_Asset.renderPipelineRayTracingResources.reflectionRaytracingRT;
var settings = VolumeManager.instance.stack.GetComponent <ScreenSpaceReflection>();
LightCluster lightClusterSettings = VolumeManager.instance.stack.GetComponent <LightCluster>();
// Bind all the required data for ray tracing
BindRayTracedReflectionData(cmd, hdCamera, rtEnvironment, reflectionShader, settings, lightClusterSettings);
// Force to disable specular lighting
cmd.SetGlobalInt(HDShaderIDs._EnableSpecularLighting, 0);
// Run the computation
cmd.DispatchRays(reflectionShader, m_RayGenIntegrationName, (uint)hdCamera.actualWidth, (uint)hdCamera.actualHeight, 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);
HDSimpleDenoiser simpleDenoiser = m_RayTracingManager.GetSimpleDenoiser();
simpleDenoiser.DenoiseBuffer(cmd, hdCamera, m_ReflIntermediateTexture0, reflectionHistory, outputTexture, settings.filterRadius.value, singleChannel: false);
}
else
{
HDUtils.BlitCameraTexture(cmd, m_ReflIntermediateTexture0, outputTexture);
}
}
}
public 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);
// 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_Asset.renderPipelineResources.textures.owenScrambledTex);
cmd.SetRayTracingTextureParam(reflectionShader, HDShaderIDs._ScramblingTexture, m_Asset.renderPipelineResources.textures.scramblingTex);
// Global reflection parameters
cmd.SetRayTracingFloatParams(reflectionShader, HDShaderIDs._RaytracingIntensityClamp, settings.clampValue.value);
cmd.SetRayTracingFloatParams(reflectionShader, HDShaderIDs._RaytracingReflectionMinSmoothness, settings.minSmoothness.value);
cmd.SetRayTracingIntParams(reflectionShader, HDShaderIDs._RaytracingReflectSky, settings.reflectSky.value ? 1 : 0);
// Inject the ray generation data
cmd.SetGlobalFloat(HDShaderIDs._RaytracingRayBias, rtEnvironment.rayBias);
cmd.SetGlobalFloat(HDShaderIDs._RaytracingRayMaxLength, settings.rayLength.value);
cmd.SetRayTracingIntParams(reflectionShader, HDShaderIDs._RaytracingNumSamples, settings.numSamples.value);
int frameIndex = hdCamera.IsTAAEnabled() ? hdCamera.taaFrameIndex : (int)m_FrameCount % 8;
cmd.SetRayTracingIntParam(reflectionShader, HDShaderIDs._RaytracingFrameIndex, frameIndex);
// 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.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, 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);
}
public void RenderReflectionsT1(HDCamera hdCamera, CommandBuffer cmd, RTHandleSystem.RTHandle outputTexture, ScriptableRenderContext renderContext, int frameCount)
{
// First thing to check is: Do we have a valid ray-tracing environment?
HDRaytracingEnvironment rtEnvironment = m_RayTracingManager.CurrentEnvironment();
// If no ray tracing environment, then we do not want to evaluate this effect
if (rtEnvironment == null)
{
return;
}
// Fetch the required resources
BlueNoise blueNoise = m_RayTracingManager.GetBlueNoiseManager();
RayTracingShader reflectionShaderRT = m_Asset.renderPipelineRayTracingResources.reflectionRaytracingRT;
ComputeShader reflectionShaderCS = m_Asset.renderPipelineRayTracingResources.reflectionRaytracingCS;
ComputeShader reflectionFilter = m_Asset.renderPipelineRayTracingResources.reflectionBilateralFilterCS;
// Fetch all the settings
var settings = VolumeManager.instance.stack.GetComponent <ScreenSpaceReflection>();
LightCluster lightClusterSettings = VolumeManager.instance.stack.GetComponent <LightCluster>();
if (settings.deferredMode.value)
{
// Fetch the new sample kernel
int currentKernel = reflectionShaderCS.FindKernel(settings.fullResolution.value ? "RaytracingReflectionsFullRes" : "RaytracingReflectionsHalfRes");
// Bind all the required textures
cmd.SetComputeTextureParam(reflectionShaderCS, currentKernel, HDShaderIDs._OwenScrambledTexture, m_Asset.renderPipelineResources.textures.owenScrambledTex);
cmd.SetComputeTextureParam(reflectionShaderCS, currentKernel, HDShaderIDs._ScramblingTexture, m_Asset.renderPipelineResources.textures.scramblingTex);
cmd.SetComputeTextureParam(reflectionShaderCS, currentKernel, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetComputeTextureParam(reflectionShaderCS, currentKernel, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer());
RenderTargetIdentifier clearCoatMaskTexture = hdCamera.frameSettings.litShaderMode == LitShaderMode.Deferred ? m_GbufferManager.GetBuffersRTI()[2] : TextureXR.GetBlackTexture();
cmd.SetComputeTextureParam(reflectionShaderCS, currentKernel, HDShaderIDs._SsrClearCoatMaskTexture, clearCoatMaskTexture);
// Bind all the required scalars
cmd.SetComputeFloatParam(reflectionShaderCS, HDShaderIDs._RaytracingIntensityClamp, settings.clampValue.value);
cmd.SetComputeFloatParam(reflectionShaderCS, HDShaderIDs._RaytracingReflectionMinSmoothness, settings.minSmoothness.value);
cmd.SetComputeIntParam(reflectionShaderCS, HDShaderIDs._RaytracingReflectSky, settings.reflectSky.value ? 1 : 0);
// Bind the sampling data
int frameIndex = hdCamera.IsTAAEnabled() ? hdCamera.taaFrameIndex : (int)m_FrameCount % 8;
cmd.SetComputeIntParam(reflectionShaderCS, HDShaderIDs._RaytracingFrameIndex, frameIndex);
// Bind the output buffers
cmd.SetComputeTextureParam(reflectionShaderCS, currentKernel, HDShaderIDs._RaytracingDirectionBuffer, m_ReflIntermediateTexture1);
// Texture dimensions
int texWidth = hdCamera.actualWidth;
int texHeight = hdCamera.actualHeight;
if (settings.fullResolution.value)
{
// Evaluate the dispatch parameters
int areaTileSize = 8;
int numTilesXHR = (texWidth + (areaTileSize - 1)) / areaTileSize;
int numTilesYHR = (texHeight + (areaTileSize - 1)) / areaTileSize;
// Compute the directions
cmd.DispatchCompute(reflectionShaderCS, currentKernel, numTilesXHR, numTilesYHR, 1);
}
else
{
// Evaluate the dispatch parameters
int areaTileSize = 8;
int numTilesXHR = (texWidth / 2 + (areaTileSize - 1)) / areaTileSize;
int numTilesYHR = (texHeight / 2 + (areaTileSize - 1)) / areaTileSize;
// Compute the directions
cmd.DispatchCompute(reflectionShaderCS, currentKernel, numTilesXHR, numTilesYHR, 1);
}
// Evaluate the deferred lighting
cmd.SetGlobalInt(HDShaderIDs._RaytracingReflectSky, settings.reflectSky.value ? 1 : 0);
RenderRaytracingDeferredLighting(cmd, hdCamera, rtEnvironment, m_ReflIntermediateTexture1, settings.rayBinning.value, rtEnvironment.reflLayerMask, settings.rayLength.value, m_ReflIntermediateTexture0, disableSpecularLighting: true, halfResolution: !settings.fullResolution.value);
}
else
{
// Bind all the required data for ray tracing
BindRayTracedReflectionData(cmd, hdCamera, rtEnvironment, reflectionShaderRT, settings, lightClusterSettings);
// Set the data for the ray miss
cmd.SetRayTracingTextureParam(reflectionShaderRT, HDShaderIDs._SkyTexture, m_SkyManager.skyReflection);
// Force to disable specular lighting
cmd.SetGlobalInt(HDShaderIDs._EnableSpecularLighting, 0);
// Run the computation
if (settings.fullResolution.value)
{
cmd.DispatchRays(reflectionShaderRT, m_RayGenReflectionFullResName, (uint)hdCamera.actualWidth, (uint)hdCamera.actualHeight, 1);
}
else
{
// Run the computation
cmd.DispatchRays(reflectionShaderRT, m_RayGenReflectionHalfResName, (uint)(hdCamera.actualWidth / 2), (uint)(hdCamera.actualHeight / 2), 1);
}
// Restore the previous state of specular lighting
cmd.SetGlobalInt(HDShaderIDs._EnableSpecularLighting, hdCamera.frameSettings.IsEnabled(FrameSettingsField.SpecularLighting) ? 1 : 0);
}
using (new ProfilingSample(cmd, "Filter Reflection", CustomSamplerId.RaytracingFilterReflection.GetSampler()))
{
// Fetch the right filter to use
int currentKernel = 0;
if (settings.fullResolution.value)
{
currentKernel = reflectionFilter.FindKernel("ReflectionIntegrationUpscaleFullRes");
}
else
{
currentKernel = reflectionFilter.FindKernel("ReflectionIntegrationUpscaleHalfRes");
}
// Inject all the parameters for the compute
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._SsrLightingTextureRW, m_ReflIntermediateTexture0);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._SsrHitPointTexture, m_ReflIntermediateTexture1);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer());
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, "_NoiseTexture", blueNoise.textureArray16RGB);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, "_RaytracingReflectionTexture", outputTexture);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._ScramblingTexture, m_Asset.renderPipelineResources.textures.scramblingTex);
cmd.SetComputeIntParam(reflectionFilter, HDShaderIDs._SpatialFilterRadius, settings.spatialFilterRadius.value);
cmd.SetComputeIntParam(reflectionFilter, HDShaderIDs._RaytracingDenoiseRadius, settings.enableFilter.value ? settings.filterRadius.value : 0);
cmd.SetComputeFloatParam(reflectionFilter, HDShaderIDs._RaytracingReflectionMinSmoothness, settings.minSmoothness.value);
// Texture dimensions
int texWidth = hdCamera.actualWidth;
int texHeight = hdCamera.actualHeight;
// Evaluate the dispatch parameters
int areaTileSize = 8;
int numTilesXHR = (texWidth + (areaTileSize - 1)) / areaTileSize;
int numTilesYHR = (texHeight + (areaTileSize - 1)) / areaTileSize;
// Bind the right texture for clear coat support
RenderTargetIdentifier clearCoatMaskTexture = hdCamera.frameSettings.litShaderMode == LitShaderMode.Deferred ? m_GbufferManager.GetBuffersRTI()[2] : TextureXR.GetBlackTexture();
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._SsrClearCoatMaskTexture, clearCoatMaskTexture);
// Compute the texture
cmd.DispatchCompute(reflectionFilter, currentKernel, numTilesXHR, numTilesYHR, 1);
using (new ProfilingSample(cmd, "Filter Reflection", CustomSamplerId.RaytracingFilterReflection.GetSampler()))
{
if (settings.enableFilter.value)
{
// Grab the history buffer
RTHandleSystem.RTHandle reflectionHistory = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.RaytracedReflection)
?? hdCamera.AllocHistoryFrameRT((int)HDCameraFrameHistoryType.RaytracedReflection, ReflectionHistoryBufferAllocatorFunction, 1);
HDSimpleDenoiser simpleDenoiser = m_RayTracingManager.GetSimpleDenoiser();
simpleDenoiser.DenoiseBuffer(cmd, hdCamera, outputTexture, reflectionHistory, m_ReflIntermediateTexture0, settings.filterRadius.value, singleChannel: false);
HDUtils.BlitCameraTexture(cmd, m_ReflIntermediateTexture0, outputTexture);
}
}
}
}
public void 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 rtEnvironment = m_RaytracingManager.CurrentEnvironment();
HDRenderPipeline renderPipeline = m_RaytracingManager.GetRenderPipeline();
RaytracingShader forwardShader = m_PipelineAsset.renderPipelineRayTracingResources.forwardRaytracing;
Shader raytracingMask = m_PipelineAsset.renderPipelineRayTracingResources.raytracingFlagMask;
RecursiveRendering recursiveSettings = VolumeManager.instance.stack.GetComponent <RecursiveRendering>();
LightCluster lightClusterSettings = VolumeManager.instance.stack.GetComponent <LightCluster>();
// Check the validity of the state before computing the effect
bool invalidState = rtEnvironment == null || !recursiveSettings.enable.value ||
forwardShader == null || raytracingMask == null ||
m_PipelineResources.textures.owenScrambledTex == null || m_PipelineResources.textures.scramblingTex == null;
// If any resource or game-object is missing We stop right away
if (invalidState)
{
return;
}
// 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_PipelineResources.textures.owenScrambledTex);
cmd.SetRaytracingTextureParam(forwardShader, HDShaderIDs._ScramblingTexture, m_PipelineResources.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, outputTexture);
// 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.directionalLightDatas);
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 denoise texture
HDRenderPipeline hdrp = (RenderPipelineManager.currentPipeline as HDRenderPipeline);
cmd.SetRaytracingTextureParam(forwardShader, HDShaderIDs._RaytracingPrimaryDebug, m_DebugRaytracingTexture);
hdrp.PushFullScreenDebugTexture(hdCamera, cmd, m_DebugRaytracingTexture, FullScreenDebugMode.PrimaryVisibility);
// Run the computation
cmd.DispatchRays(forwardShader, m_RayGenShaderName, (uint)hdCamera.actualWidth, (uint)hdCamera.actualHeight, 1);
}
public void RenderReflectionsT1(HDCamera hdCamera, CommandBuffer cmd, RTHandleSystem.RTHandle outputTexture, ScriptableRenderContext renderContext, int frameCount)
{
// First thing to check is: Do we have a valid ray-tracing environment?
HDRaytracingEnvironment rtEnvironment = m_RaytracingManager.CurrentEnvironment();
HDRenderPipeline renderPipeline = m_RaytracingManager.GetRenderPipeline();
BlueNoise blueNoise = m_RaytracingManager.GetBlueNoiseManager();
ComputeShader reflectionFilter = m_PipelineAsset.renderPipelineRayTracingResources.reflectionBilateralFilterCS;
RayTracingShader reflectionShader = m_PipelineAsset.renderPipelineRayTracingResources.reflectionRaytracing;
bool invalidState = rtEnvironment == null || blueNoise == null ||
reflectionFilter == null || reflectionShader == null ||
m_PipelineResources.textures.owenScrambledTex == null || m_PipelineResources.textures.scramblingTex == null;
// If no acceleration structure available, end it now
if (invalidState)
{
return;
}
var settings = VolumeManager.instance.stack.GetComponent <ScreenSpaceReflection>();
LightCluster lightClusterSettings = VolumeManager.instance.stack.GetComponent <LightCluster>();
// Grab the acceleration structures and the light cluster to use
RayTracingAccelerationStructure accelerationStructure = m_RaytracingManager.RequestAccelerationStructure(rtEnvironment.reflLayerMask);
HDRaytracingLightCluster lightCluster = m_RaytracingManager.RequestLightCluster(rtEnvironment.reflLayerMask);
// Compute the actual resolution that is needed base on the quality
string targetRayGen = m_RayGenHalfResName;
// Define the shader pass to use for the reflection pass
cmd.SetRayTracingShaderPass(reflectionShader, "IndirectDXR");
// Set the acceleration structure for the pass
cmd.SetRayTracingAccelerationStructure(reflectionShader, HDShaderIDs._RaytracingAccelerationStructureName, accelerationStructure);
// Inject the ray-tracing sampling data
cmd.SetRayTracingTextureParam(reflectionShader, HDShaderIDs._OwenScrambledTexture, m_PipelineResources.textures.owenScrambledTex);
cmd.SetRayTracingTextureParam(reflectionShader, HDShaderIDs._ScramblingTexture, m_PipelineResources.textures.scramblingTex);
// Global reflection parameters
cmd.SetRayTracingFloatParams(reflectionShader, HDShaderIDs._RaytracingIntensityClamp, settings.clampValue.value);
cmd.SetRayTracingFloatParams(reflectionShader, HDShaderIDs._RaytracingReflectionMinSmoothness, settings.minSmoothness.value);
cmd.SetRayTracingIntParams(reflectionShader, HDShaderIDs._RaytracingReflectSky, settings.reflectSky.value ? 1 : 0);
// Inject the ray generation data
cmd.SetGlobalFloat(HDShaderIDs._RaytracingRayBias, rtEnvironment.rayBias);
cmd.SetGlobalFloat(HDShaderIDs._RaytracingRayMaxLength, settings.rayLength.value);
cmd.SetRayTracingIntParams(reflectionShader, HDShaderIDs._RaytracingNumSamples, settings.numSamples.value);
int frameIndex = hdCamera.IsTAAEnabled() ? hdCamera.taaFrameIndex : (int)frameCount % 8;
cmd.SetGlobalInt(HDShaderIDs._RaytracingFrameIndex, frameIndex);
// Set the data for the ray generation
cmd.SetRayTracingTextureParam(reflectionShader, HDShaderIDs._SsrLightingTextureRW, m_LightingTexture);
cmd.SetRayTracingTextureParam(reflectionShader, HDShaderIDs._SsrHitPointTexture, m_HitPdfTexture);
cmd.SetRayTracingTextureParam(reflectionShader, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetRayTracingTextureParam(reflectionShader, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer());
// Set ray count tex
cmd.SetRayTracingIntParam(reflectionShader, HDShaderIDs._RayCountEnabled, m_RaytracingManager.rayCountManager.RayCountIsEnabled());
cmd.SetRayTracingTextureParam(reflectionShader, HDShaderIDs._RayCountTexture, m_RaytracingManager.rayCountManager.rayCountTexture);
// Compute the pixel spread value
float pixelSpreadAngle = Mathf.Atan(2.0f * Mathf.Tan(hdCamera.camera.fieldOfView * Mathf.PI / 360.0f) / Mathf.Min(hdCamera.actualWidth, hdCamera.actualHeight));
cmd.SetRayTracingFloatParam(reflectionShader, HDShaderIDs._RaytracingPixelSpreadAngle, pixelSpreadAngle);
// LightLoop data
cmd.SetGlobalBuffer(HDShaderIDs._RaytracingLightCluster, lightCluster.GetCluster());
cmd.SetGlobalBuffer(HDShaderIDs._LightDatasRT, lightCluster.GetLightDatas());
cmd.SetGlobalVector(HDShaderIDs._MinClusterPos, lightCluster.GetMinClusterPos());
cmd.SetGlobalVector(HDShaderIDs._MaxClusterPos, lightCluster.GetMaxClusterPos());
cmd.SetGlobalInt(HDShaderIDs._LightPerCellCount, lightClusterSettings.maxNumLightsPercell.value);
cmd.SetGlobalInt(HDShaderIDs._PunctualLightCountRT, lightCluster.GetPunctualLightCount());
cmd.SetGlobalInt(HDShaderIDs._AreaLightCountRT, lightCluster.GetAreaLightCount());
// Note: Just in case, we rebind the directional light data (in case they were not)
cmd.SetGlobalBuffer(HDShaderIDs._DirectionalLightDatas, renderPipeline.m_LightLoopLightData.directionalLightData);
cmd.SetGlobalInt(HDShaderIDs._DirectionalLightCount, renderPipeline.m_lightList.directionalLights.Count);
// Evaluate the clear coat mask texture based on the lit shader mode
RenderTargetIdentifier clearCoatMaskTexture = hdCamera.frameSettings.litShaderMode == LitShaderMode.Deferred ? m_GbufferManager.GetBuffersRTI()[2] : TextureXR.GetBlackTexture();
cmd.SetRayTracingTextureParam(reflectionShader, HDShaderIDs._SsrClearCoatMaskTexture, clearCoatMaskTexture);
// Set the data for the ray miss
cmd.SetRayTracingTextureParam(reflectionShader, HDShaderIDs._SkyTexture, m_SkyManager.skyReflection);
// Compute the actual resolution that is needed base on the quality
uint widthResolution = (uint)hdCamera.actualWidth / 2;
uint heightResolution = (uint)hdCamera.actualHeight / 2;
// Force to disable specular lighting
cmd.SetGlobalInt(HDShaderIDs._EnableSpecularLighting, 0);
// Run the computation
cmd.DispatchRays(reflectionShader, targetRayGen, widthResolution, heightResolution, 1);
// Restore the previous state of specular lighting
cmd.SetGlobalInt(HDShaderIDs._EnableSpecularLighting, hdCamera.frameSettings.IsEnabled(FrameSettingsField.SpecularLighting) ? 1 : 0);
using (new ProfilingSample(cmd, "Filter Reflection", CustomSamplerId.RaytracingFilterReflection.GetSampler()))
{
// Fetch the right filter to use
int currentKernel = reflectionFilter.FindKernel("RaytracingReflectionFilter");
// Inject all the parameters for the compute
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._SsrLightingTextureRW, m_LightingTexture);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._SsrHitPointTexture, m_HitPdfTexture);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer());
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, "_NoiseTexture", blueNoise.textureArray16RGB);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, "_VarianceTexture", m_VarianceBuffer);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, "_MinColorRangeTexture", m_MinBoundBuffer);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, "_MaxColorRangeTexture", m_MaxBoundBuffer);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, "_RaytracingReflectionTexture", outputTexture);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._ScramblingTexture, m_PipelineResources.textures.scramblingTex);
cmd.SetComputeIntParam(reflectionFilter, HDShaderIDs._SpatialFilterRadius, settings.spatialFilterRadius.value);
cmd.SetComputeFloatParam(reflectionFilter, HDShaderIDs._RaytracingReflectionMinSmoothness, settings.minSmoothness.value);
// Texture dimensions
int texWidth = outputTexture.rt.width;
int texHeight = outputTexture.rt.height;
// Evaluate the dispatch parameters
int areaTileSize = 8;
int numTilesXHR = (texWidth + (areaTileSize - 1)) / areaTileSize;
int numTilesYHR = (texHeight + (areaTileSize - 1)) / areaTileSize;
// Bind the right texture for clear coat support
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._SsrClearCoatMaskTexture, clearCoatMaskTexture);
// Compute the texture
cmd.DispatchCompute(reflectionFilter, currentKernel, numTilesXHR, numTilesYHR, 1);
int numTilesXFR = (texWidth + (areaTileSize - 1)) / areaTileSize;
int numTilesYFR = (texHeight + (areaTileSize - 1)) / areaTileSize;
RTHandleSystem.RTHandle history = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.RaytracedReflection)
?? hdCamera.AllocHistoryFrameRT((int)HDCameraFrameHistoryType.RaytracedReflection, ReflectionHistoryBufferAllocatorFunction, 1);
// Fetch the right filter to use
currentKernel = reflectionFilter.FindKernel("TemporalAccumulationFilter");
cmd.SetComputeFloatParam(reflectionFilter, HDShaderIDs._TemporalAccumuationWeight, settings.temporalAccumulationWeight.value);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._AccumulatedFrameTexture, history);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, HDShaderIDs._CurrentFrameTexture, outputTexture);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, "_MinColorRangeTexture", m_MinBoundBuffer);
cmd.SetComputeTextureParam(reflectionFilter, currentKernel, "_MaxColorRangeTexture", m_MaxBoundBuffer);
cmd.DispatchCompute(reflectionFilter, currentKernel, numTilesXFR, numTilesYFR, 1);
}
}
public void RenderRaytracingDeferredLighting(CommandBuffer cmd, HDCamera hdCamera, HDRaytracingEnvironment rtEnvironment,
RTHandle directionBuffer, bool rayBinning, LayerMask layerMask, float maxRayLength, RTHandle outputBuffer, bool disableSpecularLighting = false, bool halfResolution = false)
{
ComputeShader rayBinningCS = m_Asset.renderPipelineRayTracingResources.rayBinningCS;
RayTracingShader gBufferRaytracingRT = m_Asset.renderPipelineRayTracingResources.gBufferRaytracingRT;
ComputeShader deferredRaytracingCS = m_Asset.renderPipelineRayTracingResources.deferredRaytracingCS;
// Texture dimensions
int texWidth = hdCamera.actualWidth;
int texHeight = hdCamera.actualHeight;
if (halfResolution)
{
texWidth /= 2;
texHeight /= 2;
}
// Evaluate the dispatch parameters
int rayTileSize = 16;
int numTilesRayBinX = (texWidth + (rayTileSize - 1)) / rayTileSize;
int numTilesRayBinY = (texHeight + (rayTileSize - 1)) / rayTileSize;
int bufferSizeX = numTilesRayBinX * rayTileSize;
int bufferSizeY = numTilesRayBinY * rayTileSize;
int currentKernel = 0;
if (rayBinning)
{
// We need to go through the ray binning pass (if required)
currentKernel = rayBinningCS.FindKernel(halfResolution? "RayBinningHalf" : "RayBinning");
if (bufferSizeX * bufferSizeY > m_RayBinResult.count)
{
if (m_RayBinResult != null)
{
CoreUtils.SafeRelease(m_RayBinResult);
CoreUtils.SafeRelease(m_RayBinSizeResult);
m_RayBinResult = null;
m_RayBinSizeResult = null;
}
if (bufferSizeX * bufferSizeY > 0)
{
m_RayBinResult = new ComputeBuffer(bufferSizeX * bufferSizeY, sizeof(uint));
m_RayBinSizeResult = new ComputeBuffer(numTilesRayBinX * numTilesRayBinY, sizeof(uint));
}
}
cmd.SetComputeTextureParam(rayBinningCS, currentKernel, HDShaderIDs._RaytracingDirectionBuffer, directionBuffer);
cmd.SetComputeBufferParam(rayBinningCS, currentKernel, HDShaderIDs._RayBinResult, m_RayBinResult);
cmd.SetComputeBufferParam(rayBinningCS, currentKernel, HDShaderIDs._RayBinSizeResult, m_RayBinSizeResult);
cmd.SetComputeIntParam(rayBinningCS, HDShaderIDs._RayBinTileCountX, numTilesRayBinX);
cmd.DispatchCompute(rayBinningCS, currentKernel, numTilesRayBinX, numTilesRayBinY, 1);
}
// Define the shader pass to use for the reflection pass
cmd.SetRayTracingShaderPass(gBufferRaytracingRT, "GBufferDXR");
if (rayBinning)
{
cmd.SetGlobalBuffer(HDShaderIDs._RayBinResult, m_RayBinResult);
cmd.SetGlobalBuffer(HDShaderIDs._RayBinSizeResult, m_RayBinSizeResult);
cmd.SetRayTracingIntParam(gBufferRaytracingRT, HDShaderIDs._RayBinTileCountX, numTilesRayBinX);
}
// Grab the acceleration structures and the light cluster to use
RayTracingAccelerationStructure accelerationStructure = m_RayTracingManager.RequestAccelerationStructure(layerMask);
HDRaytracingLightCluster lightCluster = m_RayTracingManager.RequestLightCluster(layerMask);
// Set the acceleration structure for the pass
cmd.SetRayTracingAccelerationStructure(gBufferRaytracingRT, HDShaderIDs._RaytracingAccelerationStructureName, accelerationStructure);
// Bind the textures required for the ray launching
cmd.SetRayTracingTextureParam(gBufferRaytracingRT, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetRayTracingTextureParam(gBufferRaytracingRT, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer());
cmd.SetRayTracingTextureParam(gBufferRaytracingRT, HDShaderIDs._RaytracingDirectionBuffer, directionBuffer);
// Compute the pixel spread value
float pixelSpreadAngle = hdCamera.camera.fieldOfView * (Mathf.PI / 180.0f) / Mathf.Min(hdCamera.actualWidth, hdCamera.actualHeight);
cmd.SetGlobalFloat(HDShaderIDs._RaytracingPixelSpreadAngle, pixelSpreadAngle);
// Additional ray launch values
cmd.SetRayTracingFloatParams(gBufferRaytracingRT, HDShaderIDs._RaytracingRayBias, rtEnvironment.rayBias);
cmd.SetRayTracingFloatParams(gBufferRaytracingRT, HDShaderIDs._RaytracingRayMaxLength, maxRayLength);
// Bind the output textures
cmd.SetRayTracingTextureParam(gBufferRaytracingRT, HDShaderIDs._GBufferTextureRW[0], m_RaytracingGBufferManager.GetBuffer(0));
cmd.SetRayTracingTextureParam(gBufferRaytracingRT, HDShaderIDs._GBufferTextureRW[1], m_RaytracingGBufferManager.GetBuffer(1));
cmd.SetRayTracingTextureParam(gBufferRaytracingRT, HDShaderIDs._GBufferTextureRW[2], m_RaytracingGBufferManager.GetBuffer(2));
cmd.SetRayTracingTextureParam(gBufferRaytracingRT, HDShaderIDs._GBufferTextureRW[3], m_RaytracingGBufferManager.GetBuffer(3));
// cmd.SetRaytracingTextureParam(gBufferRaytracingRT, rayGenGBuffer, HDShaderIDs._GBufferTextureRW[4], m_LocalGBufferManager.GetBuffer(4));
// cmd.SetRaytracingTextureParam(gBufferRaytracingRT, rayGenGBuffer, HDShaderIDs._GBufferTextureRW[5], m_LocalGBufferManager.GetBuffer(5));
cmd.SetRayTracingTextureParam(gBufferRaytracingRT, HDShaderIDs._RaytracingDistanceBuffer, m_RaytracingDistanceBuffer);
// Compute the actual resolution that is needed base on the quality
uint widthResolution = (uint)hdCamera.actualWidth;
uint heightResolution = (uint)hdCamera.actualHeight;
if (disableSpecularLighting)
{
cmd.SetGlobalInt(HDShaderIDs._EnableSpecularLighting, 0);
}
if (rayBinning)
{
cmd.DispatchRays(gBufferRaytracingRT, m_RayGenGBufferBinned, (uint)bufferSizeX, (uint)bufferSizeY, 1);
}
else
{
cmd.SetRayTracingIntParams(gBufferRaytracingRT, "_RaytracingHalfResolution", halfResolution? 1 : 0);
cmd.DispatchRays(gBufferRaytracingRT, m_RayGenGBuffer, widthResolution, heightResolution, 1);
}
// Now let's do the deferred shading pass on the samples
currentKernel = deferredRaytracingCS.FindKernel(halfResolution ? "RaytracingDeferredHalf" : "RaytracingDeferred");
LightCluster lightClusterSettings = VolumeManager.instance.stack.GetComponent <LightCluster>();
cmd.SetComputeBufferParam(deferredRaytracingCS, currentKernel, HDShaderIDs._RaytracingLightCluster, lightCluster.GetCluster());
cmd.SetComputeBufferParam(deferredRaytracingCS, currentKernel, HDShaderIDs._LightDatasRT, lightCluster.GetLightDatas());
cmd.SetComputeVectorParam(deferredRaytracingCS, HDShaderIDs._MinClusterPos, lightCluster.GetMinClusterPos());
cmd.SetComputeVectorParam(deferredRaytracingCS, HDShaderIDs._MaxClusterPos, lightCluster.GetMaxClusterPos());
cmd.SetComputeIntParam(deferredRaytracingCS, HDShaderIDs._LightPerCellCount, lightClusterSettings.maxNumLightsPercell.value);
cmd.SetComputeIntParam(deferredRaytracingCS, HDShaderIDs._PunctualLightCountRT, lightCluster.GetPunctualLightCount());
cmd.SetComputeIntParam(deferredRaytracingCS, HDShaderIDs._AreaLightCountRT, lightCluster.GetAreaLightCount());
cmd.SetComputeTextureParam(deferredRaytracingCS, currentKernel, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetComputeTextureParam(deferredRaytracingCS, currentKernel, HDShaderIDs._RaytracingDirectionBuffer, directionBuffer);
cmd.SetComputeTextureParam(deferredRaytracingCS, currentKernel, HDShaderIDs._RaytracingDistanceBuffer, m_RaytracingDistanceBuffer);
cmd.SetComputeTextureParam(deferredRaytracingCS, currentKernel, HDShaderIDs._GBufferTexture[0], m_RaytracingGBufferManager.GetBuffer(0));
cmd.SetComputeTextureParam(deferredRaytracingCS, currentKernel, HDShaderIDs._GBufferTexture[1], m_RaytracingGBufferManager.GetBuffer(1));
cmd.SetComputeTextureParam(deferredRaytracingCS, currentKernel, HDShaderIDs._GBufferTexture[2], m_RaytracingGBufferManager.GetBuffer(2));
cmd.SetComputeTextureParam(deferredRaytracingCS, currentKernel, HDShaderIDs._GBufferTexture[3], m_RaytracingGBufferManager.GetBuffer(3));
cmd.SetComputeTextureParam(deferredRaytracingCS, currentKernel, HDShaderIDs._LightLayersTexture, TextureXR.GetWhiteTexture());
cmd.SetComputeTextureParam(deferredRaytracingCS, currentKernel, HDShaderIDs._RaytracingLitBufferRW, outputBuffer);
// Evaluate the dispatch parameters
int areaTileSize = 8;
int numTilesXHR = (texWidth + (areaTileSize - 1)) / areaTileSize;
int numTilesYHR = (texHeight + (areaTileSize - 1)) / areaTileSize;
// Compute the texture
cmd.DispatchCompute(deferredRaytracingCS, currentKernel, numTilesXHR, numTilesYHR, 1);
if (disableSpecularLighting)
{
cmd.SetGlobalInt(HDShaderIDs._EnableSpecularLighting, hdCamera.frameSettings.IsEnabled(FrameSettingsField.SpecularLighting) ? 1 : 0);
}
}
