public void Initialize(HDRenderPipeline renderPipeline)
{
// Keep track of the external buffers
m_RenderPipelineResources = renderPipeline.asset.renderPipelineResources;
m_RenderPipelineRayTracingResources = renderPipeline.asset.renderPipelineRayTracingResources;
// Keep track of the render pipeline
m_RenderPipeline = renderPipeline;
// Pre allocate the cluster with a dummy size
m_LightDataGPUArray = new ComputeBuffer(1, System.Runtime.InteropServices.Marshal.SizeOf(typeof(LightData)));
m_EnvLightDataGPUArray = new ComputeBuffer(1, System.Runtime.InteropServices.Marshal.SizeOf(typeof(EnvLightData)));
// Allocate the light cluster buffer at the right size
m_NumLightsPerCell = renderPipeline.asset.currentPlatformRenderPipelineSettings.lightLoopSettings.maxLightsPerClusterCell;
int bufferSize = 64 * 64 * 32 * (renderPipeline.asset.currentPlatformRenderPipelineSettings.lightLoopSettings.maxLightsPerClusterCell + 4);
ResizeClusterBuffer(bufferSize);
// Create the material required for debug
m_DebugMaterial = CoreUtils.CreateEngineMaterial(m_RenderPipelineRayTracingResources.lightClusterDebugS);
}
AmbientOcclusionDenoiseParameters PrepareAmbientOcclusionDenoiseParameters(HDCamera hdCamera, ShaderVariablesRaytracing raytracingCB)
{
AmbientOcclusionDenoiseParameters rtAOParameters = new AmbientOcclusionDenoiseParameters();
var aoSettings = hdCamera.volumeStack.GetComponent <AmbientOcclusion>();
rtAOParameters.denoise = aoSettings.denoise;
rtAOParameters.denoiserRadius = aoSettings.denoiserRadius;
rtAOParameters.historyValidity = 1.0f;
#if UNITY_HDRP_DXR_TESTS_DEFINE
if (Application.isPlaying)
{
rtAOParameters.historyValidity = 0.0f;
}
else
#endif
// We need to check if something invalidated the history buffers
rtAOParameters.historyValidity = HDRenderPipeline.ValidRayTracingHistory(hdCamera) ? 1.0f : 0.0f;
rtAOParameters.actualWidth = hdCamera.actualWidth;
rtAOParameters.actualHeight = hdCamera.actualHeight;
rtAOParameters.viewCount = hdCamera.viewCount;
return(rtAOParameters);
}
public TemporalFilterParameters PrepareTemporalFilterParameters(HDCamera hdCamera, bool singleChannel, float historyValidity)
{
TemporalFilterParameters temporalFilterParameters = new TemporalFilterParameters();
// Camera parameters
temporalFilterParameters.texWidth = hdCamera.actualWidth;
temporalFilterParameters.texHeight = hdCamera.actualHeight;
temporalFilterParameters.viewCount = hdCamera.viewCount;
// Denoising parameters
temporalFilterParameters.pixelSpreadTangent = HDRenderPipeline.GetPixelSpreadTangent(hdCamera.camera.fieldOfView, hdCamera.actualWidth, hdCamera.actualHeight);
temporalFilterParameters.historyValidity = historyValidity;
// Kernels
temporalFilterParameters.temporalAccKernel = singleChannel ? m_TemporalAccumulationSingleKernel : m_TemporalAccumulationColorKernel;
temporalFilterParameters.copyHistoryKernel = singleChannel ? m_CopyHistorySingleKernel : m_CopyHistoryColorKernel;
// Other parameters
temporalFilterParameters.temporalFilterCS = m_TemporalFilterCS;
return(temporalFilterParameters);
}
public DiffuseDenoiserParameters PrepareDiffuseDenoiserParameters(HDCamera hdCamera, bool singleChannel, float kernelSize, bool halfResolutionFilter)
{
DiffuseDenoiserParameters ddParams = new DiffuseDenoiserParameters();
// Camera parameters
ddParams.texWidth = hdCamera.actualWidth;
ddParams.texHeight = hdCamera.actualHeight;
ddParams.viewCount = hdCamera.viewCount;
// Denoising parameters
ddParams.pixelSpreadTangent = HDRenderPipeline.GetPixelSpreadTangent(hdCamera.camera.fieldOfView, hdCamera.actualWidth, hdCamera.actualHeight);
ddParams.kernelSize = kernelSize;
ddParams.halfResolutionFilter = halfResolutionFilter;
// Kernels
ddParams.bilateralFilterKernel = singleChannel ? m_BilateralFilterSingleKernel : m_BilateralFilterColorKernel;
ddParams.gatherKernel = singleChannel ? m_GatherSingleKernel : m_GatherColorKernel;
// Other parameters
ddParams.owenScrambleRGBA = m_OwenScrambleRGBA;
ddParams.diffuseDenoiserCS = m_DiffuseDenoiser;
return(ddParams);
}
public void Init(HDRenderPipelineRayTracingResources rpRTResources, SharedRTManager sharedRTManager, HDRenderPipeline renderPipeline)
{
// Keep track of the resources
m_TemporalFilterCS = rpRTResources.temporalFilterCS;
// Keep track of the shared rt manager
m_SharedRTManager = sharedRTManager;
m_RenderPipeline = renderPipeline;
// Grab all the kernels we'll eventually need
m_ValidateHistoryKernel = m_TemporalFilterCS.FindKernel("ValidateHistory");
m_TemporalAccumulationSingleKernel = m_TemporalFilterCS.FindKernel("TemporalAccumulationSingle");
m_TemporalAccumulationColorKernel = m_TemporalFilterCS.FindKernel("TemporalAccumulationColor");
m_CopyHistorySingleKernel = m_TemporalFilterCS.FindKernel("CopyHistorySingle");
m_CopyHistoryColorKernel = m_TemporalFilterCS.FindKernel("CopyHistoryColor");
m_TemporalAccumulationSingleArrayKernel = m_TemporalFilterCS.FindKernel("TemporalAccumulationSingleArray");
m_TemporalAccumulationColorArrayKernel = m_TemporalFilterCS.FindKernel("TemporalAccumulationColorArray");
m_CopyHistorySingleArrayKernel = m_TemporalFilterCS.FindKernel("CopyHistorySingleArray");
m_CopyHistoryColorArrayKernel = m_TemporalFilterCS.FindKernel("CopyHistoryColorArray");
m_CopyHistorySingleArrayNoValidityKernel = m_TemporalFilterCS.FindKernel("CopyHistorySingleArrayNoValidity");
}
public void Initialize(RenderPipelineResources rpResources, HDRenderPipelineRayTracingResources rpRTResources, HDRaytracingManager raytracingManager, SharedRTManager sharedRTManager, HDRenderPipeline renderPipeline)
{
// Keep track of the external buffers
m_RenderPipelineResources = rpResources;
m_RenderPipelineRayTracingResources = rpRTResources;
m_RaytracingManager = raytracingManager;
// Keep track of the render pipeline
m_RenderPipeline = renderPipeline;
// Keep track of the shader rt manager
m_SharedRTManager = sharedRTManager;
// Texture used to output debug information
m_DebugLightClusterTexture = RTHandles.Alloc(Vector2.one, TextureXR.slices, dimension: TextureXR.dimension, filterMode: FilterMode.Point, colorFormat: GraphicsFormat.R16G16B16A16_SFloat, enableRandomWrite: true, useDynamicScale: true, useMipMap: false, name: "DebugLightClusterTexture");
// Pre allocate the cluster with a dummy size
m_LightCluster = new ComputeBuffer(1, sizeof(uint));
m_LightDataGPUArray = new ComputeBuffer(1, System.Runtime.InteropServices.Marshal.SizeOf(typeof(LightData)));
m_EnvLightDataGPUArray = new ComputeBuffer(1, System.Runtime.InteropServices.Marshal.SizeOf(typeof(EnvLightData)));
// Create the material required for debug
m_DebugMaterial = CoreUtils.CreateEngineMaterial(m_RenderPipelineRayTracingResources.lightClusterDebugS);
}
public SSGIDenoiserOutput Denoise(RenderGraph renderGraph, HDCamera hdCamera,
TextureHandle depthPyramid, TextureHandle normalBuffer, TextureHandle motionVectorsBuffer, TextureHandle inputBuffer0, TextureHandle inputBuffer1,
HDUtils.PackedMipChainInfo depthMipInfo, bool halfResolution = false, float historyValidity = 1.0f)
{
using (var builder = renderGraph.AddRenderPass <DenoiseSSGIPassData>("Denoise SSGI", out var passData, ProfilingSampler.Get(HDProfileId.SSGIDenoise)))
{
builder.EnableAsyncCompute(false);
// Prepass buffers
passData.depthTexture = builder.ReadTexture(depthPyramid);
passData.normalBuffer = builder.ReadTexture(normalBuffer);
passData.motionVectorsBuffer = builder.ReadTexture(motionVectorsBuffer);
// History buffers
bool historyRequireClear = false;
RTHandle indirectDiffuseHistory0 = RequestIndirectDiffuseHistory0(hdCamera, out historyRequireClear);
passData.indirectDiffuseHistory0 = builder.ReadWriteTexture(renderGraph.ImportTexture(indirectDiffuseHistory0));
RTHandle indirectDiffuseHistory1 = RequestIndirectDiffuseHistory1(hdCamera, out historyRequireClear);
passData.indirectDiffuseHistory1 = builder.ReadWriteTexture(renderGraph.ImportTexture(indirectDiffuseHistory1));
var historyDepthBuffer = halfResolution ? hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.Depth1) : hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.Depth);
passData.historyDepthBuffer = historyDepthBuffer != null?builder.ReadTexture(renderGraph.ImportTexture(historyDepthBuffer)) : renderGraph.defaultResources.blackTextureXR;
// Input buffers
passData.inputBuffer0 = builder.ReadTexture(inputBuffer0);
passData.inputBuffer1 = builder.ReadTexture(inputBuffer1);
// Output buffers
passData.outputBuffer0 = builder.WriteTexture(renderGraph.CreateTexture(new TextureDesc(Vector2.one, true, true)
{
colorFormat = GraphicsFormat.B10G11R11_UFloatPack32, enableRandomWrite = true, name = "SSGI Denoised 0"
}));
passData.outputBuffer1 = builder.WriteTexture(renderGraph.CreateTexture(new TextureDesc(Vector2.one, true, true)
{
colorFormat = GraphicsFormat.R16G16_SFloat, enableRandomWrite = true, name = "SSGI Denoised 1"
}));
// Parameters
var giSettings = hdCamera.volumeStack.GetComponent <UnityEngine.Rendering.HighDefinition.GlobalIllumination>();
// Compute the dispatch parameters based on if we are half res or not
int tileSize = 8;
EvaluateDispatchParameters(hdCamera, halfResolution, tileSize, out passData.numTilesX, out passData.numTilesY, out passData.halfScreenSize);
passData.firstMipOffset.Set(HDShadowUtils.Asfloat((uint)depthMipInfo.mipLevelOffsets[1].x), HDShadowUtils.Asfloat((uint)depthMipInfo.mipLevelOffsets[1].y));
passData.historyValidity = historyValidity;
passData.viewCount = hdCamera.viewCount;
passData.pixelSpreadTangent = HDRenderPipeline.GetPixelSpreadTangent(hdCamera.camera.fieldOfView, hdCamera.actualWidth, hdCamera.actualHeight);
// Denoising parameters
passData.filterRadius = giSettings.filterRadius;
passData.halfResolution = halfResolution;
passData.historyValidity = historyValidity;
passData.historyNeedsClear = historyRequireClear;
passData.exclusiveMode = !hdCamera.frameSettings.IsEnabled(FrameSettingsField.ProbeVolume);
// Compute shader
passData.ssgiDenoiserCS = m_SSGIDenoiserCS;
// Kernels
passData.spatialFilterKernel = halfResolution ? m_SpatialFilterHalfKernel : m_SpatialFilterKernel;
passData.temporalFilterKernel = halfResolution ? m_TemporalFilterHalfKernel : m_TemporalFilterKernel;
passData.copyHistory = m_CopyHistory;
builder.SetRenderFunc(
(DenoiseSSGIPassData data, RenderGraphContext ctx) =>
{
int effectiveRadius = data.exclusiveMode ? data.filterRadius / 2 : data.filterRadius;
if (data.exclusiveMode)
{
// Horizontal Filter
SpatialFilter(ctx.cmd, data, effectiveRadius, new Vector2(1.0f, 0.0f), data.inputBuffer0, data.inputBuffer1, data.outputBuffer0, data.outputBuffer1);
// Vertical Filter
SpatialFilter(ctx.cmd, data, effectiveRadius, new Vector2(0.0f, 1.0f), data.outputBuffer0, data.outputBuffer1, data.inputBuffer0, data.inputBuffer1);
}
// Grab the history buffer
if (data.historyNeedsClear)
{
// clear it to black if this is the first pass to avoid nans
CoreUtils.SetRenderTarget(ctx.cmd, data.indirectDiffuseHistory0, ClearFlag.Color, Color.black);
CoreUtils.SetRenderTarget(ctx.cmd, data.indirectDiffuseHistory1, ClearFlag.Color, Color.black);
}
// Bind the input buffers
ctx.cmd.SetComputeTextureParam(data.ssgiDenoiserCS, data.temporalFilterKernel, HDShaderIDs._DepthTexture, data.depthTexture);
ctx.cmd.SetComputeTextureParam(data.ssgiDenoiserCS, data.temporalFilterKernel, HDShaderIDs._NormalBufferTexture, data.normalBuffer);
ctx.cmd.SetComputeTextureParam(data.ssgiDenoiserCS, data.temporalFilterKernel, HDShaderIDs._CameraMotionVectorsTexture, data.motionVectorsBuffer);
ctx.cmd.SetComputeFloatParam(data.ssgiDenoiserCS, HDShaderIDs._HistoryValidity, data.historyValidity);
if (data.halfResolution)
{
ctx.cmd.SetComputeTextureParam(data.ssgiDenoiserCS, data.temporalFilterKernel, HDShaderIDs._HistoryDepthTexture, data.historyDepthBuffer);
ctx.cmd.SetComputeVectorParam(data.ssgiDenoiserCS, HDShaderIDs._DepthPyramidFirstMipLevelOffset, data.firstMipOffset);
}
else
{
ctx.cmd.SetComputeTextureParam(data.ssgiDenoiserCS, data.temporalFilterKernel, HDShaderIDs._HistoryDepthTexture, data.historyDepthBuffer);
}
ctx.cmd.SetComputeTextureParam(data.ssgiDenoiserCS, data.temporalFilterKernel, HDShaderIDs._HistoryBuffer0, data.indirectDiffuseHistory0);
ctx.cmd.SetComputeTextureParam(data.ssgiDenoiserCS, data.temporalFilterKernel, HDShaderIDs._HistoryBuffer1, data.indirectDiffuseHistory1);
ctx.cmd.SetComputeTextureParam(data.ssgiDenoiserCS, data.temporalFilterKernel, HDShaderIDs._InputNoisyBuffer0, data.inputBuffer0);
ctx.cmd.SetComputeTextureParam(data.ssgiDenoiserCS, data.temporalFilterKernel, HDShaderIDs._InputNoisyBuffer1, data.inputBuffer1);
// Bind the output buffer
ctx.cmd.SetComputeTextureParam(data.ssgiDenoiserCS, data.temporalFilterKernel, HDShaderIDs._OutputFilteredBuffer0, data.outputBuffer0);
ctx.cmd.SetComputeTextureParam(data.ssgiDenoiserCS, data.temporalFilterKernel, HDShaderIDs._OutputFilteredBuffer1, data.outputBuffer1);
// Do the temporal pass
ctx.cmd.DispatchCompute(data.ssgiDenoiserCS, data.temporalFilterKernel, data.numTilesX, data.numTilesY, data.viewCount);
// Copy the new version into the history buffer
ctx.cmd.SetComputeTextureParam(data.ssgiDenoiserCS, data.copyHistory, HDShaderIDs._InputNoisyBuffer0, data.outputBuffer0);
ctx.cmd.SetComputeTextureParam(data.ssgiDenoiserCS, data.copyHistory, HDShaderIDs._InputNoisyBuffer1, data.outputBuffer1);
ctx.cmd.SetComputeTextureParam(data.ssgiDenoiserCS, data.copyHistory, HDShaderIDs._OutputFilteredBuffer0, data.indirectDiffuseHistory0);
ctx.cmd.SetComputeTextureParam(data.ssgiDenoiserCS, data.copyHistory, HDShaderIDs._OutputFilteredBuffer1, data.indirectDiffuseHistory1);
ctx.cmd.DispatchCompute(data.ssgiDenoiserCS, data.copyHistory, data.numTilesX, data.numTilesY, data.viewCount);
// Horizontal Filter
SpatialFilter(ctx.cmd, data, effectiveRadius, new Vector2(1.0f, 0.0f), data.outputBuffer0, data.outputBuffer1, data.inputBuffer0, data.inputBuffer1);
// Vertical Filter
SpatialFilter(ctx.cmd, data, effectiveRadius, new Vector2(0.0f, 1.0f), data.inputBuffer0, data.inputBuffer1, data.outputBuffer0, data.outputBuffer1);
});
SSGIDenoiserOutput denoiserOutput = new SSGIDenoiserOutput();
denoiserOutput.outputBuffer0 = passData.outputBuffer0;
denoiserOutput.outputBuffer1 = passData.outputBuffer1;
return(denoiserOutput);
}
}
public void Init(RenderPipelineResources rpResources, HDRenderPipelineRayTracingResources rpRTResources, SharedRTManager sharedRTManager, HDRenderPipeline renderPipeline)
{
// Keep track of the resources
m_DiffuseDenoiser = rpRTResources.diffuseDenoiserCS;
m_OwenScrambleRGBA = rpResources.textures.owenScrambledRGBATex;
// Keep track of the shared rt manager
m_SharedRTManager = sharedRTManager;
m_RenderPipeline = renderPipeline;
// Grab all the kernels we'll eventually need
m_BilateralFilterSingleKernel = m_DiffuseDenoiser.FindKernel("BilateralFilterSingle");
m_BilateralFilterColorKernel = m_DiffuseDenoiser.FindKernel("BilateralFilterColor");
m_GatherSingleKernel = m_DiffuseDenoiser.FindKernel("GatherSingle");
m_GatherColorKernel = m_DiffuseDenoiser.FindKernel("GatherColor");
}
public TextureHandle Denoise(RenderGraph renderGraph, HDCamera hdCamera, DiffuseDenoiserParameters denoiserParams,
TextureHandle noisyBuffer, TextureHandle depthBuffer, TextureHandle normalBuffer, TextureHandle outputBuffer)
{
using (var builder = renderGraph.AddRenderPass <DiffuseDenoiserPassData>("DiffuseDenoiser", out var passData, ProfilingSampler.Get(HDProfileId.DiffuseFilter)))
{
// Cannot run in async
builder.EnableAsyncCompute(false);
// Initialization data
passData.needInit = !m_DenoiserInitialized;
m_DenoiserInitialized = true;
passData.owenScrambledTexture = m_OwnenScrambledTexture;
// Camera parameters
if (denoiserParams.fullResolutionInput)
{
passData.texWidth = hdCamera.actualWidth;
passData.texHeight = hdCamera.actualHeight;
}
else
{
passData.texWidth = hdCamera.actualWidth / 2;
passData.texHeight = hdCamera.actualHeight / 2;
}
passData.viewCount = hdCamera.viewCount;
// Parameters
passData.pixelSpreadTangent = HDRenderPipeline.GetPixelSpreadTangent(hdCamera.camera.fieldOfView, passData.texWidth, passData.texHeight);
passData.kernelSize = denoiserParams.kernelSize;
passData.halfResolutionFilter = denoiserParams.halfResolutionFilter;
passData.jitterFilter = denoiserParams.jitterFilter;
passData.frameIndex = HDRenderPipeline.RayTracingFrameIndex(hdCamera);
passData.fullResolutionInput = denoiserParams.fullResolutionInput;
// Kernels
passData.bilateralFilterKernel = denoiserParams.singleChannel ? m_BilateralFilterSingleKernel : m_BilateralFilterColorKernel;
passData.gatherKernel = denoiserParams.singleChannel ? m_GatherSingleKernel : m_GatherColorKernel;
// Other parameters
passData.diffuseDenoiserCS = m_DiffuseDenoiser;
passData.pointDistribution = builder.ReadComputeBuffer(renderGraph.ImportComputeBuffer(m_PointDistribution));
passData.depthStencilBuffer = builder.ReadTexture(depthBuffer);
passData.normalBuffer = builder.ReadTexture(normalBuffer);
passData.noisyBuffer = builder.ReadTexture(noisyBuffer);
passData.intermediateBuffer = builder.CreateTransientTexture(new TextureDesc(Vector2.one, true, true)
{
colorFormat = GraphicsFormat.B10G11R11_UFloatPack32, enableRandomWrite = true, name = "DiffuseDenoiserIntermediate"
});
passData.outputBuffer = builder.WriteTexture(outputBuffer);
builder.SetRenderFunc(
(DiffuseDenoiserPassData data, RenderGraphContext ctx) =>
{
// Generate the point distribution if needed (this is only ran once)
if (passData.needInit)
{
int m_GeneratePointDistributionKernel = data.diffuseDenoiserCS.FindKernel("GeneratePointDistribution");
ctx.cmd.SetComputeTextureParam(data.diffuseDenoiserCS, m_GeneratePointDistributionKernel, HDShaderIDs._OwenScrambledRGTexture, data.owenScrambledTexture);
ctx.cmd.SetComputeBufferParam(data.diffuseDenoiserCS, m_GeneratePointDistributionKernel, "_PointDistributionRW", data.pointDistribution);
ctx.cmd.DispatchCompute(data.diffuseDenoiserCS, m_GeneratePointDistributionKernel, 1, 1, 1);
}
// Evaluate the dispatch parameters
int areaTileSize = 8;
int numTilesX = (data.texWidth + (areaTileSize - 1)) / areaTileSize;
int numTilesY = (data.texHeight + (areaTileSize - 1)) / areaTileSize;
// Request the intermediate buffers that we need
ctx.cmd.SetComputeFloatParam(data.diffuseDenoiserCS, HDShaderIDs._DenoiserFilterRadius, data.kernelSize);
ctx.cmd.SetComputeBufferParam(data.diffuseDenoiserCS, data.bilateralFilterKernel, HDShaderIDs._PointDistribution, data.pointDistribution);
ctx.cmd.SetComputeTextureParam(data.diffuseDenoiserCS, data.bilateralFilterKernel, HDShaderIDs._DenoiseInputTexture, data.noisyBuffer);
ctx.cmd.SetComputeTextureParam(data.diffuseDenoiserCS, data.bilateralFilterKernel, HDShaderIDs._DepthTexture, data.depthStencilBuffer);
ctx.cmd.SetComputeTextureParam(data.diffuseDenoiserCS, data.bilateralFilterKernel, HDShaderIDs._NormalBufferTexture, data.normalBuffer);
ctx.cmd.SetComputeTextureParam(data.diffuseDenoiserCS, data.bilateralFilterKernel, HDShaderIDs._DenoiseOutputTextureRW, data.halfResolutionFilter ? data.intermediateBuffer : data.outputBuffer);
ctx.cmd.SetComputeIntParam(data.diffuseDenoiserCS, HDShaderIDs._HalfResolutionFilter, data.halfResolutionFilter ? 1 : 0);
ctx.cmd.SetComputeFloatParam(data.diffuseDenoiserCS, HDShaderIDs._PixelSpreadAngleTangent, data.pixelSpreadTangent);
if (data.jitterFilter)
{
ctx.cmd.SetComputeIntParam(data.diffuseDenoiserCS, HDShaderIDs._JitterFramePeriod, (data.frameIndex % 4));
}
else
{
ctx.cmd.SetComputeIntParam(data.diffuseDenoiserCS, HDShaderIDs._JitterFramePeriod, -1);
}
CoreUtils.SetKeyword(ctx.cmd, "FULL_RESOLUTION_INPUT", data.fullResolutionInput);
ctx.cmd.DispatchCompute(data.diffuseDenoiserCS, data.bilateralFilterKernel, numTilesX, numTilesY, data.viewCount);
if (data.halfResolutionFilter)
{
ctx.cmd.SetComputeTextureParam(data.diffuseDenoiserCS, data.gatherKernel, HDShaderIDs._DenoiseInputTexture, data.intermediateBuffer);
ctx.cmd.SetComputeTextureParam(data.diffuseDenoiserCS, data.gatherKernel, HDShaderIDs._DepthTexture, data.depthStencilBuffer);
ctx.cmd.SetComputeTextureParam(data.diffuseDenoiserCS, data.gatherKernel, HDShaderIDs._DenoiseOutputTextureRW, data.outputBuffer);
ctx.cmd.DispatchCompute(data.diffuseDenoiserCS, data.gatherKernel, numTilesX, numTilesY, data.viewCount);
}
CoreUtils.SetKeyword(ctx.cmd, "FULL_RESOLUTION_INPUT", false);
});
return(passData.outputBuffer);
}
}
public void Init(HDRenderPipelineRayTracingResources rpRTResources, SharedRTManager sharedRTManager, HDRenderPipeline renderPipeline)
{
m_ReflectionDenoiserCS = rpRTResources.reflectionDenoiserCS;
m_ReflectionFilterMapping = rpRTResources.reflectionFilterMapping;
m_SharedRTManager = sharedRTManager;
m_RenderPipeline = renderPipeline;
// Fetch all the kernels we shall be using
s_TemporalAccumulationKernel = m_ReflectionDenoiserCS.FindKernel("TemporalAccumulation");
s_CopyHistoryKernel = m_ReflectionDenoiserCS.FindKernel("CopyHistory");
s_BilateralFilterHKernel = m_ReflectionDenoiserCS.FindKernel("BilateralFilterH");
s_BilateralFilterVKernel = m_ReflectionDenoiserCS.FindKernel("BilateralFilterV");
}
public TemporalDenoiserArrayOutputData DenoiseBuffer(RenderGraph renderGraph, HDCamera hdCamera,
TextureHandle depthBuffer, TextureHandle normalBuffer, TextureHandle motionVectorBuffer, TextureHandle historyValidationBuffer,
TextureHandle noisyBuffer, RTHandle historyBuffer,
TextureHandle distanceBuffer, RTHandle distanceHistorySignal,
TextureHandle velocityBuffer,
RTHandle validationHistoryBuffer,
int sliceIndex, Vector4 channelMask, Vector4 distanceChannelMask,
bool distanceBased, bool singleChannel, float historyValidity)
{
TemporalDenoiserArrayOutputData resultData = new TemporalDenoiserArrayOutputData();
using (var builder = renderGraph.AddRenderPass <TemporalFilterArrayPassData>("TemporalDenoiser", out var passData, ProfilingSampler.Get(HDProfileId.TemporalFilter)))
{
// Cannot run in async
builder.EnableAsyncCompute(false);
// Set the camera parameters
passData.texWidth = hdCamera.actualWidth;
passData.texHeight = hdCamera.actualHeight;
passData.viewCount = hdCamera.viewCount;
// Denoising parameters
passData.distanceBasedDenoiser = distanceBased;
passData.historyValidity = historyValidity;
passData.pixelSpreadTangent = HDRenderPipeline.GetPixelSpreadTangent(hdCamera.camera.fieldOfView, hdCamera.actualWidth, hdCamera.actualHeight);
passData.sliceIndex = sliceIndex;
passData.channelMask = channelMask;
passData.distanceChannelMask = distanceChannelMask;
// Kernels
passData.temporalAccKernel = singleChannel ? m_TemporalAccumulationSingleArrayKernel : m_TemporalAccumulationColorArrayKernel;
passData.blendHistoryKernel = singleChannel ? m_BlendHistorySingleArrayKernel : m_BlendHistoryColorArrayKernel;
passData.temporalAccSingleKernel = m_TemporalAccumulationSingleArrayKernel;
passData.blendHistoryNoValidityKernel = m_BlendHistorySingleArrayNoValidityKernel;
passData.outputHistoryKernel = m_OutputHistoryArrayKernel;
// Other parameters
passData.temporalFilterCS = m_TemporalFilterCS;
// Input buffers
passData.depthStencilBuffer = builder.ReadTexture(depthBuffer);
passData.normalBuffer = builder.ReadTexture(normalBuffer);
passData.motionVectorBuffer = builder.ReadTexture(motionVectorBuffer);
passData.velocityBuffer = builder.ReadTexture(velocityBuffer);
passData.noisyBuffer = builder.ReadTexture(noisyBuffer);
passData.distanceBuffer = distanceBased ? builder.ReadTexture(distanceBuffer) : renderGraph.defaultResources.blackTextureXR;
passData.validationBuffer = builder.ReadTexture(historyValidationBuffer);
// History buffers
passData.historyBuffer = builder.ReadWriteTexture(renderGraph.ImportTexture(historyBuffer));
passData.validationHistoryBuffer = builder.ReadWriteTexture(renderGraph.ImportTexture(validationHistoryBuffer));
passData.distanceHistorySignal = distanceBased ? builder.ReadWriteTexture(renderGraph.ImportTexture(distanceHistorySignal)) : renderGraph.defaultResources.blackTextureXR;
// Intermediate buffers
passData.intermediateSignalOutput = builder.CreateTransientTexture(new TextureDesc(Vector2.one, true, true)
{
colorFormat = GraphicsFormat.R16G16B16A16_SFloat, enableRandomWrite = true, name = "Intermediate Filter Output"
});
passData.intermediateValidityOutput = builder.CreateTransientTexture(new TextureDesc(Vector2.one, true, true)
{
colorFormat = GraphicsFormat.R16G16B16A16_SFloat, enableRandomWrite = true, name = "Intermediate Validity output"
});
// Output textures
passData.outputBuffer = builder.ReadWriteTexture(renderGraph.CreateTexture(new TextureDesc(Vector2.one, true, true)
{
colorFormat = GraphicsFormat.R16G16B16A16_SFloat, enableRandomWrite = true, name = "Temporal Filter Output"
}));
passData.outputDistanceSignal = distanceBased ? builder.ReadWriteTexture(renderGraph.CreateTexture(new TextureDesc(Vector2.one, true, true)
{
colorFormat = GraphicsFormat.R16G16B16A16_SFloat, enableRandomWrite = true, name = "Temporal Filter Distance output"
})) : new TextureHandle();
builder.SetRenderFunc(
(TemporalFilterArrayPassData data, RenderGraphContext ctx) =>
{
// Evaluate the dispatch parameters
int tfTileSize = 8;
int numTilesX = (data.texWidth + (tfTileSize - 1)) / tfTileSize;
int numTilesY = (data.texHeight + (tfTileSize - 1)) / tfTileSize;
// Now that we have validated our history, let's accumulate
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.temporalAccKernel, HDShaderIDs._DenoiseInputTexture, data.noisyBuffer);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.temporalAccKernel, HDShaderIDs._HistoryBuffer, data.historyBuffer);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.temporalAccKernel, HDShaderIDs._HistoryValidityBuffer, data.validationHistoryBuffer);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.temporalAccKernel, HDShaderIDs._DepthTexture, data.depthStencilBuffer);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.temporalAccKernel, HDShaderIDs._CameraMotionVectorsTexture, data.motionVectorBuffer);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.temporalAccKernel, HDShaderIDs._ValidationBuffer, data.validationBuffer);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.temporalAccKernel, HDShaderIDs._VelocityBuffer, data.velocityBuffer);
// Bind the constants
ctx.cmd.SetComputeIntParam(data.temporalFilterCS, HDShaderIDs._DenoisingHistorySlice, data.sliceIndex);
ctx.cmd.SetComputeVectorParam(data.temporalFilterCS, HDShaderIDs._DenoisingHistoryMask, data.channelMask);
ctx.cmd.SetComputeFloatParam(data.temporalFilterCS, HDShaderIDs._HistoryValidity, data.historyValidity);
ctx.cmd.SetComputeIntParam(data.temporalFilterCS, HDShaderIDs._ReceiverMotionRejection, 1);
ctx.cmd.SetComputeIntParam(data.temporalFilterCS, HDShaderIDs._OccluderMotionRejection, 1);
// Bind the output buffer
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.temporalAccKernel, HDShaderIDs._AccumulationOutputTextureRW, data.outputBuffer);
// Combine with the history
ctx.cmd.DispatchCompute(data.temporalFilterCS, data.temporalAccKernel, numTilesX, numTilesY, data.viewCount);
// Combine with the history buffer
ctx.cmd.SetComputeIntParam(data.temporalFilterCS, HDShaderIDs._DenoisingHistorySlice, data.sliceIndex);
ctx.cmd.SetComputeVectorParam(data.temporalFilterCS, HDShaderIDs._DenoisingHistoryMask, data.channelMask);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.blendHistoryKernel, HDShaderIDs._DenoiseInputTexture, data.outputBuffer);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.blendHistoryKernel, HDShaderIDs._DenoiseInputArrayTexture, data.historyBuffer);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.blendHistoryKernel, HDShaderIDs._ValidityInputArrayTexture, data.validationHistoryBuffer);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.blendHistoryKernel, HDShaderIDs._IntermediateDenoiseOutputTextureRW, data.intermediateSignalOutput);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.blendHistoryKernel, HDShaderIDs._IntermediateValidityOutputTextureRW, data.intermediateValidityOutput);
ctx.cmd.DispatchCompute(data.temporalFilterCS, data.blendHistoryKernel, numTilesX, numTilesY, data.viewCount);
// Output the combination to the history buffer
ctx.cmd.SetComputeIntParam(data.temporalFilterCS, HDShaderIDs._DenoisingHistorySlice, data.sliceIndex);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.outputHistoryKernel, HDShaderIDs._IntermediateDenoiseOutputTexture, data.intermediateSignalOutput);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.outputHistoryKernel, HDShaderIDs._IntermediateValidityOutputTexture, data.intermediateValidityOutput);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.outputHistoryKernel, HDShaderIDs._DenoiseOutputArrayTextureRW, data.historyBuffer);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.outputHistoryKernel, HDShaderIDs._ValidityOutputTextureRW, data.validationHistoryBuffer);
ctx.cmd.DispatchCompute(data.temporalFilterCS, data.outputHistoryKernel, numTilesX, numTilesY, data.viewCount);
if (data.distanceBasedDenoiser)
{
// Bind the input buffers
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.temporalAccSingleKernel, HDShaderIDs._DenoiseInputTexture, data.distanceBuffer);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.temporalAccSingleKernel, HDShaderIDs._HistoryBuffer, data.distanceHistorySignal);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.temporalAccSingleKernel, HDShaderIDs._HistoryValidityBuffer, data.validationHistoryBuffer);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.temporalAccSingleKernel, HDShaderIDs._DepthTexture, data.depthStencilBuffer);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.temporalAccSingleKernel, HDShaderIDs._ValidationBuffer, data.validationBuffer);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.temporalAccSingleKernel, HDShaderIDs._VelocityBuffer, data.velocityBuffer);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.temporalAccSingleKernel, HDShaderIDs._CameraMotionVectorsTexture, data.motionVectorBuffer);
// Bind the constant inputs
ctx.cmd.SetComputeIntParam(data.temporalFilterCS, HDShaderIDs._DenoisingHistorySlice, data.sliceIndex);
ctx.cmd.SetComputeVectorParam(data.temporalFilterCS, HDShaderIDs._DenoisingHistoryMask, data.distanceChannelMask);
// Bind the output buffers
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.temporalAccSingleKernel, HDShaderIDs._AccumulationOutputTextureRW, data.outputDistanceSignal);
// Dispatch the temporal accumulation
ctx.cmd.DispatchCompute(data.temporalFilterCS, data.temporalAccSingleKernel, numTilesX, numTilesY, data.viewCount);
// Make sure to copy the new-accumulated signal in our history buffer
ctx.cmd.SetComputeIntParam(data.temporalFilterCS, HDShaderIDs._DenoisingHistorySlice, data.sliceIndex);
ctx.cmd.SetComputeVectorParam(data.temporalFilterCS, HDShaderIDs._DenoisingHistoryMask, data.distanceChannelMask);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.blendHistoryNoValidityKernel, HDShaderIDs._DenoiseInputTexture, data.outputDistanceSignal);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.blendHistoryNoValidityKernel, HDShaderIDs._DenoiseInputArrayTexture, data.distanceHistorySignal);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.blendHistoryNoValidityKernel, HDShaderIDs._IntermediateDenoiseOutputTextureRW, data.intermediateSignalOutput);
ctx.cmd.DispatchCompute(data.temporalFilterCS, data.blendHistoryNoValidityKernel, numTilesX, numTilesY, data.viewCount);
// Output the combination to the history buffer
ctx.cmd.SetComputeIntParam(data.temporalFilterCS, HDShaderIDs._DenoisingHistorySlice, data.sliceIndex);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.outputHistoryKernel, HDShaderIDs._IntermediateDenoiseOutputTexture, data.intermediateSignalOutput);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.outputHistoryKernel, HDShaderIDs._DenoiseOutputArrayTextureRW, data.intermediateSignalOutput);
ctx.cmd.DispatchCompute(data.temporalFilterCS, data.outputHistoryKernel, numTilesX, numTilesY, data.viewCount);
}
});
resultData.outputSignal = passData.outputBuffer;
resultData.outputSignalDistance = passData.outputDistanceSignal;
}
return(resultData);
}
internal void InitRaytracing(HDRenderPipeline renderPipeline)
{
m_RaytracingAmbientOcclusion.Init(renderPipeline);
}
// Denoiser variant when history is stored in an array and the validation buffer is seperate
public void DenoiseBuffer(CommandBuffer cmd, HDCamera hdCamera,
RTHandle noisySignal, RTHandle historySignal,
RTHandle validationHistory,
RTHandle velocityBuffer,
RTHandle outputSignal,
int sliceIndex, Vector4 channelMask,
RTHandle distanceSignal, RTHandle distanceHistorySignal, RTHandle outputDistanceSignal, Vector4 distanceChannelMask,
bool singleChannel = true, float historyValidity = 1.0f)
{
// If we do not have a depth and normal history buffers, we can skip right away
var historyDepthBuffer = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.Depth);
var historyNormalBuffer = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.Normal);
if (historyDepthBuffer == null || historyNormalBuffer == null)
{
HDUtils.BlitCameraTexture(cmd, noisySignal, historySignal);
HDUtils.BlitCameraTexture(cmd, noisySignal, outputSignal);
if (distanceSignal != null && distanceHistorySignal != null && outputDistanceSignal != null)
{
HDUtils.BlitCameraTexture(cmd, distanceSignal, distanceHistorySignal);
HDUtils.BlitCameraTexture(cmd, distanceSignal, outputDistanceSignal);
}
return;
}
// Fetch 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;
// Request the intermediate buffer we need
RTHandle validationBuffer = m_RenderPipeline.GetRayTracingBuffer(InternalRayTracingBuffers.R0);
// First of all we need to validate the history to know where we can or cannot use the history signal
int m_KernelFilter = m_TemporalFilterCS.FindKernel("ValidateHistory");
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._HistoryDepthTexture, historyDepthBuffer);
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer());
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._HistoryNormalBufferTexture, historyNormalBuffer);
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._ValidationBufferRW, validationBuffer);
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._VelocityBuffer, velocityBuffer);
cmd.SetComputeFloatParam(m_TemporalFilterCS, HDShaderIDs._HistoryValidity, historyValidity);
cmd.SetComputeFloatParam(m_TemporalFilterCS, HDShaderIDs._PixelSpreadAngleTangent, HDRenderPipeline.GetPixelSpreadTangent(hdCamera.camera.fieldOfView, hdCamera.actualWidth, hdCamera.actualHeight));
cmd.DispatchCompute(m_TemporalFilterCS, m_KernelFilter, numTilesX, numTilesY, hdCamera.viewCount);
// Now that we have validated our history, let's accumulate
m_KernelFilter = m_TemporalFilterCS.FindKernel(singleChannel ? "TemporalAccumulationSingleArray" : "TemporalAccumulationColorArray");
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._DenoiseInputTexture, noisySignal);
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._HistoryBuffer, historySignal);
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._HistoryValidityBuffer, validationHistory);
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._DenoiseOutputTextureRW, outputSignal);
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._ValidationBuffer, validationBuffer);
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._VelocityBuffer, velocityBuffer);
cmd.SetComputeIntParam(m_TemporalFilterCS, HDShaderIDs._DenoisingHistorySlice, sliceIndex);
cmd.SetComputeVectorParam(m_TemporalFilterCS, HDShaderIDs._DenoisingHistoryMask, channelMask);
cmd.DispatchCompute(m_TemporalFilterCS, m_KernelFilter, numTilesX, numTilesY, hdCamera.viewCount);
// Make sure to copy the new-accumulated signal in our history buffer
m_KernelFilter = m_TemporalFilterCS.FindKernel(singleChannel ? "CopyHistorySingleArray" : "CopyHistoryColorArray");
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._DenoiseInputTexture, outputSignal);
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._DenoiseOutputTextureRW, historySignal);
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._ValidityOutputTextureRW, validationHistory);
cmd.SetComputeIntParam(m_TemporalFilterCS, HDShaderIDs._DenoisingHistorySlice, sliceIndex);
cmd.SetComputeVectorParam(m_TemporalFilterCS, HDShaderIDs._DenoisingHistoryMask, channelMask);
cmd.DispatchCompute(m_TemporalFilterCS, m_KernelFilter, numTilesX, numTilesY, hdCamera.viewCount);
if (distanceSignal != null && distanceHistorySignal != null && outputDistanceSignal != null)
{
// Now that we have validated our history, let's accumulate
m_KernelFilter = m_TemporalFilterCS.FindKernel("TemporalAccumulationSingleArray");
// Bind the intput buffers
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._DenoiseInputTexture, distanceSignal);
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._HistoryBuffer, distanceHistorySignal);
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._HistoryValidityBuffer, validationHistory);
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._ValidationBuffer, validationBuffer);
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._VelocityBuffer, velocityBuffer);
// Bind the constant inputs
cmd.SetComputeIntParam(m_TemporalFilterCS, HDShaderIDs._DenoisingHistorySlice, sliceIndex);
cmd.SetComputeVectorParam(m_TemporalFilterCS, HDShaderIDs._DenoisingHistoryMask, distanceChannelMask);
// Bind the output buffers
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._DenoiseOutputTextureRW, outputDistanceSignal);
// Dispatch the temporal accumulation
cmd.DispatchCompute(m_TemporalFilterCS, m_KernelFilter, numTilesX, numTilesY, hdCamera.viewCount);
// Make sure to copy the new-accumulated signal in our history buffer
m_KernelFilter = m_TemporalFilterCS.FindKernel("CopyHistorySingleArrayNoValidity");
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._DenoiseInputTexture, outputDistanceSignal);
cmd.SetComputeTextureParam(m_TemporalFilterCS, m_KernelFilter, HDShaderIDs._DenoiseOutputTextureRW, distanceHistorySignal);
cmd.SetComputeIntParam(m_TemporalFilterCS, HDShaderIDs._DenoisingHistorySlice, sliceIndex);
cmd.SetComputeVectorParam(m_TemporalFilterCS, HDShaderIDs._DenoisingHistoryMask, distanceChannelMask);
cmd.DispatchCompute(m_TemporalFilterCS, m_KernelFilter, numTilesX, numTilesY, hdCamera.viewCount);
}
}
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);
}
}
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);
}
public TextureHandle DenoiseRTR(RenderGraph renderGraph, HDCamera hdCamera, float historyValidity, int maxKernelSize, bool fullResolution, bool singleReflectionBounce, bool affectSmoothSurfaces,
TextureHandle depthPyramid, TextureHandle normalBuffer, TextureHandle motionVectorBuffer, TextureHandle clearCoatTexture, TextureHandle lightingTexture, RTHandle historyBuffer)
{
using (var builder = renderGraph.AddRenderPass <ReflectionDenoiserPassData>("Denoise ray traced reflections", out var passData, ProfilingSampler.Get(HDProfileId.RaytracingReflectionFilter)))
{
builder.EnableAsyncCompute(false);
// Camera parameters
passData.texWidth = fullResolution ? hdCamera.actualWidth : (hdCamera.actualWidth / 2);
passData.texHeight = fullResolution ? hdCamera.actualHeight : (hdCamera.actualHeight / 2);
passData.viewCount = hdCamera.viewCount;
// De-noising parameters
passData.historyValidity = historyValidity;
passData.maxKernelSize = fullResolution ? maxKernelSize : maxKernelSize / 2;
passData.historyBufferSize = new Vector2(1.0f / (float)hdCamera.historyRTHandleProperties.currentRenderTargetSize.x, 1.0f / (float)hdCamera.historyRTHandleProperties.currentRenderTargetSize.y);
passData.currentEffectResolution = new Vector4(passData.texWidth, passData.texHeight, 1.0f / (float)passData.texWidth, 1.0f / (float)passData.texHeight);
passData.pixelSpreadTangent = HDRenderPipeline.GetPixelSpreadTangent(hdCamera.camera.fieldOfView, passData.texWidth, passData.texHeight);
passData.affectSmoothSurfaces = affectSmoothSurfaces ? 1 : 0;
passData.singleReflectionBounce = singleReflectionBounce ? 1 : 0;
// Other parameters
passData.reflectionDenoiserCS = m_ReflectionDenoiserCS;
passData.temporalAccumulationKernel = fullResolution ? s_TemporalAccumulationFullResKernel : s_TemporalAccumulationHalfResKernel;
passData.copyHistoryKernel = s_CopyHistoryKernel;
passData.bilateralFilterHKernel = fullResolution ? s_BilateralFilterH_FRKernel : s_BilateralFilterH_HRKernel;
passData.bilateralFilterVKernel = fullResolution ? s_BilateralFilterV_FRKernel : s_BilateralFilterV_HRKernel;
passData.reflectionFilterMapping = m_ReflectionFilterMapping;
passData.depthBuffer = builder.ReadTexture(depthPyramid);
passData.normalBuffer = builder.ReadTexture(normalBuffer);
passData.motionVectorBuffer = builder.ReadTexture(motionVectorBuffer);
RTHandle depthT = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.Depth);
passData.historyDepth = depthT != null?renderGraph.ImportTexture(hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.Depth)) : renderGraph.defaultResources.blackTextureXR;
passData.intermediateBuffer0 = builder.CreateTransientTexture(new TextureDesc(Vector2.one, true, true)
{
colorFormat = GraphicsFormat.R16G16B16A16_SFloat, enableRandomWrite = true, name = "IntermediateTexture0"
});
passData.intermediateBuffer1 = builder.CreateTransientTexture(new TextureDesc(Vector2.one, true, true)
{
colorFormat = GraphicsFormat.R16G16B16A16_SFloat, enableRandomWrite = true, name = "IntermediateTexture1"
});
passData.historySignal = builder.ReadWriteTexture(renderGraph.ImportTexture(historyBuffer));
passData.noisyToOutputSignal = builder.ReadWriteTexture(lightingTexture);
builder.SetRenderFunc((ReflectionDenoiserPassData data, RenderGraphContext ctx) =>
{
// Evaluate the dispatch parameters
int tileSize = 8;
int numTilesX = (data.texWidth + (tileSize - 1)) / tileSize;
int numTilesY = (data.texHeight + (tileSize - 1)) / tileSize;
// Input data
ctx.cmd.SetComputeFloatParam(data.reflectionDenoiserCS, HDShaderIDs._HistoryValidity, data.historyValidity);
ctx.cmd.SetComputeFloatParam(data.reflectionDenoiserCS, HDShaderIDs._PixelSpreadAngleTangent, data.pixelSpreadTangent);
ctx.cmd.SetComputeVectorParam(data.reflectionDenoiserCS, HDShaderIDs._HistoryBufferSize, data.historyBufferSize);
ctx.cmd.SetComputeVectorParam(data.reflectionDenoiserCS, HDShaderIDs._CurrentEffectResolution, data.currentEffectResolution);
ctx.cmd.SetComputeIntParam(data.reflectionDenoiserCS, HDShaderIDs._AffectSmoothSurfaces, data.affectSmoothSurfaces);
ctx.cmd.SetComputeIntParam(data.reflectionDenoiserCS, HDShaderIDs._SingleReflectionBounce, data.singleReflectionBounce);
ctx.cmd.SetComputeTextureParam(data.reflectionDenoiserCS, data.temporalAccumulationKernel, HDShaderIDs._DenoiseInputTexture, data.noisyToOutputSignal);
ctx.cmd.SetComputeTextureParam(data.reflectionDenoiserCS, data.temporalAccumulationKernel, HDShaderIDs._DepthTexture, data.depthBuffer);
ctx.cmd.SetComputeTextureParam(data.reflectionDenoiserCS, data.temporalAccumulationKernel, HDShaderIDs._HistoryDepthTexture, data.historyDepth);
ctx.cmd.SetComputeTextureParam(data.reflectionDenoiserCS, data.temporalAccumulationKernel, HDShaderIDs._NormalBufferTexture, data.normalBuffer);
ctx.cmd.SetComputeTextureParam(data.reflectionDenoiserCS, data.temporalAccumulationKernel, HDShaderIDs._CameraMotionVectorsTexture, data.motionVectorBuffer);
ctx.cmd.SetComputeTextureParam(data.reflectionDenoiserCS, data.temporalAccumulationKernel, HDShaderIDs._HistoryBuffer, data.historySignal);
// Output texture
ctx.cmd.SetComputeTextureParam(data.reflectionDenoiserCS, data.temporalAccumulationKernel, HDShaderIDs._DenoiseOutputTextureRW, data.intermediateBuffer0);
ctx.cmd.SetComputeTextureParam(data.reflectionDenoiserCS, data.temporalAccumulationKernel, HDShaderIDs._SampleCountTextureRW, data.intermediateBuffer1);
// Do the temporal accumulation
ctx.cmd.DispatchCompute(data.reflectionDenoiserCS, data.temporalAccumulationKernel, numTilesX, numTilesY, data.viewCount);
// Copy the accumulated signal into the history buffer
ctx.cmd.SetComputeTextureParam(data.reflectionDenoiserCS, data.copyHistoryKernel, HDShaderIDs._DenoiseInputTexture, data.intermediateBuffer0);
ctx.cmd.SetComputeTextureParam(data.reflectionDenoiserCS, data.copyHistoryKernel, HDShaderIDs._DenoiseOutputTextureRW, data.historySignal);
ctx.cmd.SetComputeTextureParam(data.reflectionDenoiserCS, data.copyHistoryKernel, HDShaderIDs._SampleCountTextureRW, data.intermediateBuffer1);
ctx.cmd.DispatchCompute(data.reflectionDenoiserCS, data.copyHistoryKernel, numTilesX, numTilesY, data.viewCount);
// Horizontal pass of the bilateral filter
ctx.cmd.SetComputeIntParam(data.reflectionDenoiserCS, HDShaderIDs._DenoiserFilterRadius, data.maxKernelSize);
ctx.cmd.SetComputeTextureParam(data.reflectionDenoiserCS, data.bilateralFilterHKernel, HDShaderIDs._DenoiseInputTexture, data.intermediateBuffer0);
ctx.cmd.SetComputeTextureParam(data.reflectionDenoiserCS, data.bilateralFilterHKernel, HDShaderIDs._DepthTexture, data.depthBuffer);
ctx.cmd.SetComputeTextureParam(data.reflectionDenoiserCS, data.bilateralFilterHKernel, HDShaderIDs._NormalBufferTexture, data.normalBuffer);
ctx.cmd.SetComputeTextureParam(data.reflectionDenoiserCS, data.bilateralFilterHKernel, HDShaderIDs._DenoiseOutputTextureRW, data.intermediateBuffer1);
ctx.cmd.SetComputeTextureParam(data.reflectionDenoiserCS, data.bilateralFilterHKernel, HDShaderIDs._ReflectionFilterMapping, data.reflectionFilterMapping);
ctx.cmd.DispatchCompute(data.reflectionDenoiserCS, data.bilateralFilterHKernel, numTilesX, numTilesY, data.viewCount);
// Horizontal pass of the bilateral filter
ctx.cmd.SetComputeIntParam(data.reflectionDenoiserCS, HDShaderIDs._DenoiserFilterRadius, data.maxKernelSize);
ctx.cmd.SetComputeTextureParam(data.reflectionDenoiserCS, data.bilateralFilterVKernel, HDShaderIDs._DenoiseInputTexture, data.intermediateBuffer1);
ctx.cmd.SetComputeTextureParam(data.reflectionDenoiserCS, data.bilateralFilterVKernel, HDShaderIDs._DepthTexture, data.depthBuffer);
ctx.cmd.SetComputeTextureParam(data.reflectionDenoiserCS, data.bilateralFilterVKernel, HDShaderIDs._NormalBufferTexture, data.normalBuffer);
ctx.cmd.SetComputeTextureParam(data.reflectionDenoiserCS, data.bilateralFilterVKernel, HDShaderIDs._DenoiseOutputTextureRW, data.noisyToOutputSignal);
ctx.cmd.SetComputeTextureParam(data.reflectionDenoiserCS, data.bilateralFilterVKernel, HDShaderIDs._ReflectionFilterMapping, data.reflectionFilterMapping);
ctx.cmd.DispatchCompute(data.reflectionDenoiserCS, data.bilateralFilterVKernel, numTilesX, numTilesY, data.viewCount);
});
return(passData.noisyToOutputSignal);
}
}
public void Init(HDRenderPipelineRayTracingResources rpRTResources, SharedRTManager sharedRTManager, HDRenderPipeline renderPipeline)
{
m_SharedRTManager = sharedRTManager;
m_RenderPipeline = renderPipeline;
m_ShadowDenoiser = rpRTResources.diffuseShadowDenoiserCS;
m_ShadowFilterMapping = rpRTResources.shadowFilterMapping;
m_BilateralFilterHSingleDirectionalKernel = m_ShadowDenoiser.FindKernel("BilateralFilterHSingleDirectional");
m_BilateralFilterVSingleDirectionalKernel = m_ShadowDenoiser.FindKernel("BilateralFilterVSingleDirectional");
m_BilateralFilterHColorDirectionalKernel = m_ShadowDenoiser.FindKernel("BilateralFilterHColorDirectional");
m_BilateralFilterVColorDirectionalKernel = m_ShadowDenoiser.FindKernel("BilateralFilterVColorDirectional");
m_BilateralFilterHSingleSphereKernel = m_ShadowDenoiser.FindKernel("BilateralFilterHSingleSphere");
m_BilateralFilterVSingleSphereKernel = m_ShadowDenoiser.FindKernel("BilateralFilterVSingleSphere");
}
void BuildLightData(CommandBuffer cmd, HDCamera hdCamera, HDRayTracingLights rayTracingLights)
{
// If no lights, exit
if (rayTracingLights.lightCount == 0)
{
ResizeLightDataBuffer(1);
return;
}
// Also we need to build the light list data
if (m_LightDataGPUArray == null || m_LightDataGPUArray.count != rayTracingLights.lightCount)
{
ResizeLightDataBuffer(rayTracingLights.lightCount);
}
m_LightDataCPUArray.Clear();
// Build the data for every light
for (int lightIdx = 0; lightIdx < rayTracingLights.hdLightArray.Count; ++lightIdx)
{
var lightData = new LightData();
HDAdditionalLightData additionalLightData = rayTracingLights.hdLightArray[lightIdx];
// When the user deletes a light source in the editor, there is a single frame where the light is null before the collection of light in the scene is triggered
// the workaround for this is simply to add an invalid light for that frame
if (additionalLightData == null)
{
m_LightDataCPUArray.Add(lightData);
continue;
}
Light light = additionalLightData.gameObject.GetComponent <Light>();
// Both of these positions are non-camera-relative.
float distanceToCamera = (light.gameObject.transform.position - hdCamera.camera.transform.position).magnitude;
float lightDistanceFade = HDUtils.ComputeLinearDistanceFade(distanceToCamera, additionalLightData.fadeDistance);
bool contributesToLighting = ((additionalLightData.lightDimmer > 0) && (additionalLightData.affectDiffuse || additionalLightData.affectSpecular)) || (additionalLightData.volumetricDimmer > 0);
contributesToLighting = contributesToLighting && (lightDistanceFade > 0);
if (!contributesToLighting)
{
continue;
}
lightData.lightLayers = additionalLightData.GetLightLayers();
LightCategory lightCategory = LightCategory.Count;
GPULightType gpuLightType = GPULightType.Point;
LightVolumeType lightVolumeType = LightVolumeType.Count;
HDRenderPipeline.EvaluateGPULightType(light.type, additionalLightData.lightTypeExtent, additionalLightData.spotLightShape, ref lightCategory, ref gpuLightType, ref lightVolumeType);
lightData.lightType = gpuLightType;
lightData.positionRWS = light.gameObject.transform.position;
bool applyRangeAttenuation = additionalLightData.applyRangeAttenuation && (gpuLightType != GPULightType.ProjectorBox);
lightData.range = light.range;
if (applyRangeAttenuation)
{
lightData.rangeAttenuationScale = 1.0f / (light.range * light.range);
lightData.rangeAttenuationBias = 1.0f;
if (lightData.lightType == GPULightType.Rectangle)
{
// Rect lights are currently a special case because they use the normalized
// [0, 1] attenuation range rather than the regular [0, r] one.
lightData.rangeAttenuationScale = 1.0f;
}
}
else // Don't apply any attenuation but do a 'step' at range
{
// Solve f(x) = b - (a * x)^2 where x = (d/r)^2.
// f(0) = huge -> b = huge.
// f(1) = 0 -> huge - a^2 = 0 -> a = sqrt(huge).
const float hugeValue = 16777216.0f;
const float sqrtHuge = 4096.0f;
lightData.rangeAttenuationScale = sqrtHuge / (light.range * light.range);
lightData.rangeAttenuationBias = hugeValue;
if (lightData.lightType == GPULightType.Rectangle)
{
// Rect lights are currently a special case because they use the normalized
// [0, 1] attenuation range rather than the regular [0, r] one.
lightData.rangeAttenuationScale = sqrtHuge;
}
}
Color value = light.color.linear * light.intensity;
if (additionalLightData.useColorTemperature)
{
value *= Mathf.CorrelatedColorTemperatureToRGB(light.colorTemperature);
}
lightData.color = new Vector3(value.r, value.g, value.b);
lightData.forward = light.transform.forward;
lightData.up = light.transform.up;
lightData.right = light.transform.right;
if (lightData.lightType == GPULightType.ProjectorBox)
{
// Rescale for cookies and windowing.
lightData.right *= 2.0f / Mathf.Max(additionalLightData.shapeWidth, 0.001f);
lightData.up *= 2.0f / Mathf.Max(additionalLightData.shapeHeight, 0.001f);
}
else if (lightData.lightType == GPULightType.ProjectorPyramid)
{
// Get width and height for the current frustum
var spotAngle = light.spotAngle;
float frustumWidth, frustumHeight;
if (additionalLightData.aspectRatio >= 1.0f)
{
frustumHeight = 2.0f * Mathf.Tan(spotAngle * 0.5f * Mathf.Deg2Rad);
frustumWidth = frustumHeight * additionalLightData.aspectRatio;
}
else
{
frustumWidth = 2.0f * Mathf.Tan(spotAngle * 0.5f * Mathf.Deg2Rad);
frustumHeight = frustumWidth / additionalLightData.aspectRatio;
}
// Rescale for cookies and windowing.
lightData.right *= 2.0f / frustumWidth;
lightData.up *= 2.0f / frustumHeight;
}
if (lightData.lightType == GPULightType.Spot)
{
var spotAngle = light.spotAngle;
var innerConePercent = additionalLightData.innerSpotPercent01;
var cosSpotOuterHalfAngle = Mathf.Clamp(Mathf.Cos(spotAngle * 0.5f * Mathf.Deg2Rad), 0.0f, 1.0f);
var sinSpotOuterHalfAngle = Mathf.Sqrt(1.0f - cosSpotOuterHalfAngle * cosSpotOuterHalfAngle);
var cosSpotInnerHalfAngle = Mathf.Clamp(Mathf.Cos(spotAngle * 0.5f * innerConePercent * Mathf.Deg2Rad), 0.0f, 1.0f); // inner cone
var val = Mathf.Max(0.0001f, (cosSpotInnerHalfAngle - cosSpotOuterHalfAngle));
lightData.angleScale = 1.0f / val;
lightData.angleOffset = -cosSpotOuterHalfAngle * lightData.angleScale;
// Rescale for cookies and windowing.
float cotOuterHalfAngle = cosSpotOuterHalfAngle / sinSpotOuterHalfAngle;
lightData.up *= cotOuterHalfAngle;
lightData.right *= cotOuterHalfAngle;
}
else
{
// These are the neutral values allowing GetAngleAnttenuation in shader code to return 1.0
lightData.angleScale = 0.0f;
lightData.angleOffset = 1.0f;
}
if (lightData.lightType != GPULightType.Directional && lightData.lightType != GPULightType.ProjectorBox)
{
// Store the squared radius of the light to simulate a fill light.
lightData.size = new Vector2(additionalLightData.shapeRadius * additionalLightData.shapeRadius, 0);
}
if (lightData.lightType == GPULightType.Rectangle || lightData.lightType == GPULightType.Tube)
{
lightData.size = new Vector2(additionalLightData.shapeWidth, additionalLightData.shapeHeight);
}
lightData.lightDimmer = lightDistanceFade * (additionalLightData.lightDimmer);
lightData.diffuseDimmer = lightDistanceFade * (additionalLightData.affectDiffuse ? additionalLightData.lightDimmer : 0);
lightData.specularDimmer = lightDistanceFade * (additionalLightData.affectSpecular ? additionalLightData.lightDimmer * hdCamera.frameSettings.specularGlobalDimmer : 0);
lightData.volumetricLightDimmer = lightDistanceFade * (additionalLightData.volumetricDimmer);
lightData.contactShadowMask = 0;
lightData.cookieIndex = -1;
lightData.shadowIndex = -1;
lightData.screenSpaceShadowIndex = -1;
if (light != null && light.cookie != null)
{
// TODO: add texture atlas support for cookie textures.
switch (light.type)
{
case LightType.Spot:
lightData.cookieIndex = m_RenderPipeline.m_TextureCaches.cookieTexArray.FetchSlice(cmd, light.cookie);
break;
case LightType.Point:
lightData.cookieIndex = m_RenderPipeline.m_TextureCaches.cubeCookieTexArray.FetchSlice(cmd, light.cookie);
break;
}
}
else if (light.type == LightType.Spot && additionalLightData.spotLightShape != SpotLightShape.Cone)
{
// Projectors lights must always have a cookie texture.
// As long as the cache is a texture array and not an atlas, the 4x4 white texture will be rescaled to 128
lightData.cookieIndex = m_RenderPipeline.m_TextureCaches.cookieTexArray.FetchSlice(cmd, Texture2D.whiteTexture);
}
else if (lightData.lightType == GPULightType.Rectangle && additionalLightData.areaLightCookie != null)
{
lightData.cookieIndex = m_RenderPipeline.m_TextureCaches.areaLightCookieManager.FetchSlice(cmd, additionalLightData.areaLightCookie);
}
{
lightData.shadowDimmer = 1.0f;
lightData.volumetricShadowDimmer = 1.0f;
}
{
// fix up shadow information
lightData.shadowIndex = additionalLightData.shadowIndex;
}
// Value of max smoothness is from artists point of view, need to convert from perceptual smoothness to roughness
lightData.minRoughness = (1.0f - additionalLightData.maxSmoothness) * (1.0f - additionalLightData.maxSmoothness);
// No usage for the shadow masks
lightData.shadowMaskSelector = Vector4.zero;
{
// use -1 to say that we don't use shadow mask
lightData.shadowMaskSelector.x = -1.0f;
lightData.nonLightMappedOnly = 0;
}
if (ShaderConfig.s_CameraRelativeRendering != 0)
{
// Caution: 'LightData.positionWS' is camera-relative after this point.
Vector3 camPosWS = hdCamera.mainViewConstants.worldSpaceCameraPos;
lightData.positionRWS -= camPosWS;
}
// Set the data for this light
m_LightDataCPUArray.Add(lightData);
}
// Push the data to the GPU
m_LightDataGPUArray.SetData(m_LightDataCPUArray);
}
//Preallocates number of lights for bounds arrays and resets all internal counters. Must be called once per frame per view always.
public void NewFrame(HDCamera hdCamera, int maxLightCount)
{
int viewCounts = hdCamera.viewCount;
if (viewCounts > m_LighsPerViewCapacity)
{
m_LighsPerViewCapacity = viewCounts;
m_LightsPerView.ResizeArray(m_LighsPerViewCapacity);
}
m_LightsPerViewCount = viewCounts;
int totalBoundsCount = maxLightCount * viewCounts;
int requestedBoundsCount = Math.Max(totalBoundsCount, 1);
if (requestedBoundsCount > m_LightBoundsCapacity)
{
m_LightBoundsCapacity = Math.Max(Math.Max(m_LightBoundsCapacity * 2, requestedBoundsCount), ArrayCapacity);
m_LightBounds.ResizeArray(m_LightBoundsCapacity);
m_LightVolumes.ResizeArray(m_LightBoundsCapacity);
}
m_LightBoundsCount = totalBoundsCount;
m_BoundsEyeDataOffset = maxLightCount;
for (int viewId = 0; viewId < viewCounts; ++viewId)
{
m_LightsPerView[viewId] = new LightsPerView()
{
worldToView = HDRenderPipeline.GetWorldToViewMatrix(hdCamera, viewId),
boundsOffset = viewId * m_BoundsEyeDataOffset,
boundsCount = 0
};
}
if (!m_LightTypeCounters.IsCreated)
{
m_LightTypeCounters.ResizeArray(Enum.GetValues(typeof(GPULightTypeCountSlots)).Length);
}
m_LightCount = 0;
m_ContactShadowIndex = 0;
m_ScreenSpaceShadowIndex = 0;
m_ScreenSpaceShadowChannelSlot = 0;
m_ScreenSpaceShadowsUnion.Clear();
m_CurrentShadowSortedSunLightIndex = -1;
m_CurrentSunLightAdditionalLightData = null;
m_CurrentSunShadowMapFlags = HDProcessedVisibleLightsBuilder.ShadowMapFlags.None;
m_DebugSelectedLightShadowIndex = -1;
m_DebugSelectedLightShadowCount = 0;
for (int i = 0; i < m_Asset.currentPlatformRenderPipelineSettings.hdShadowInitParams.maxScreenSpaceShadowSlots; ++i)
{
m_CurrentScreenSpaceShadowData[i].additionalLightData = null;
m_CurrentScreenSpaceShadowData[i].lightDataIndex = -1;
m_CurrentScreenSpaceShadowData[i].valid = false;
}
for (int i = 0; i < m_LightTypeCounters.Length; ++i)
{
m_LightTypeCounters[i] = 0;
}
}
public TextureHandle Denoise(RenderGraph renderGraph, HDCamera hdCamera, bool singleChannel, float kernelSize, bool halfResolutionFilter, bool jitterFilter,
TextureHandle noisyBuffer, TextureHandle depthBuffer, TextureHandle normalBuffer, TextureHandle outputBuffer)
{
using (var builder = renderGraph.AddRenderPass <DiffuseDenoiserPassData>("DiffuseDenoiser", out var passData, ProfilingSampler.Get(HDProfileId.DiffuseFilter)))
{
// Cannot run in async
builder.EnableAsyncCompute(false);
// Fetch all the resources
// Camera parameters
passData.texWidth = hdCamera.actualWidth;
passData.texHeight = hdCamera.actualHeight;
passData.viewCount = hdCamera.viewCount;
// Denoising parameters
passData.pixelSpreadTangent = HDRenderPipeline.GetPixelSpreadTangent(hdCamera.camera.fieldOfView, hdCamera.actualWidth, hdCamera.actualHeight);
passData.kernelSize = kernelSize;
passData.halfResolutionFilter = halfResolutionFilter;
passData.jitterFilter = jitterFilter;
passData.frameIndex = m_RenderPipeline.RayTracingFrameIndex(hdCamera);
// Kernels
passData.bilateralFilterKernel = singleChannel ? m_BilateralFilterSingleKernel : m_BilateralFilterColorKernel;
passData.gatherKernel = singleChannel ? m_GatherSingleKernel : m_GatherColorKernel;
// Other parameters
passData.owenScrambleRGBA = m_OwenScrambleRGBA;
passData.diffuseDenoiserCS = m_DiffuseDenoiser;
passData.depthStencilBuffer = builder.ReadTexture(depthBuffer);
passData.normalBuffer = builder.ReadTexture(normalBuffer);
passData.noisyBuffer = builder.ReadTexture(noisyBuffer);
passData.intermediateBuffer = builder.CreateTransientTexture(new TextureDesc(Vector2.one, true, true)
{
colorFormat = GraphicsFormat.R16G16B16A16_SFloat, enableRandomWrite = true, name = "DiffuseDenoiserIntermediate"
});
passData.outputBuffer = builder.WriteTexture(outputBuffer);
builder.SetRenderFunc(
(DiffuseDenoiserPassData data, RenderGraphContext ctx) =>
{
// Evaluate the dispatch parameters
int areaTileSize = 8;
int numTilesX = (data.texWidth + (areaTileSize - 1)) / areaTileSize;
int numTilesY = (data.texHeight + (areaTileSize - 1)) / areaTileSize;
// Request the intermediate buffers that we need
ctx.cmd.SetGlobalTexture(HDShaderIDs._OwenScrambledRGTexture, data.owenScrambleRGBA);
ctx.cmd.SetComputeFloatParam(data.diffuseDenoiserCS, HDShaderIDs._DenoiserFilterRadius, data.kernelSize);
ctx.cmd.SetComputeTextureParam(data.diffuseDenoiserCS, data.bilateralFilterKernel, HDShaderIDs._DenoiseInputTexture, data.noisyBuffer);
ctx.cmd.SetComputeTextureParam(data.diffuseDenoiserCS, data.bilateralFilterKernel, HDShaderIDs._DepthTexture, data.depthStencilBuffer);
ctx.cmd.SetComputeTextureParam(data.diffuseDenoiserCS, data.bilateralFilterKernel, HDShaderIDs._NormalBufferTexture, data.normalBuffer);
ctx.cmd.SetComputeTextureParam(data.diffuseDenoiserCS, data.bilateralFilterKernel, HDShaderIDs._DenoiseOutputTextureRW, data.halfResolutionFilter ? data.intermediateBuffer : data.outputBuffer);
ctx.cmd.SetComputeIntParam(data.diffuseDenoiserCS, HDShaderIDs._HalfResolutionFilter, data.halfResolutionFilter ? 1 : 0);
ctx.cmd.SetComputeFloatParam(data.diffuseDenoiserCS, HDShaderIDs._PixelSpreadAngleTangent, data.pixelSpreadTangent);
if (data.jitterFilter)
{
ctx.cmd.SetComputeIntParam(data.diffuseDenoiserCS, HDShaderIDs._JitterFramePeriod, (data.frameIndex % 4));
}
else
{
ctx.cmd.SetComputeIntParam(data.diffuseDenoiserCS, HDShaderIDs._JitterFramePeriod, -1);
}
ctx.cmd.DispatchCompute(data.diffuseDenoiserCS, data.bilateralFilterKernel, numTilesX, numTilesY, data.viewCount);
if (data.halfResolutionFilter)
{
ctx.cmd.SetComputeTextureParam(data.diffuseDenoiserCS, data.gatherKernel, HDShaderIDs._DenoiseInputTexture, data.intermediateBuffer);
ctx.cmd.SetComputeTextureParam(data.diffuseDenoiserCS, data.gatherKernel, HDShaderIDs._DenoiseOutputTextureRW, data.outputBuffer);
ctx.cmd.DispatchCompute(data.diffuseDenoiserCS, data.gatherKernel, numTilesX, numTilesY, data.viewCount);
}
});
return(passData.outputBuffer);
}
}
public void Init(HDRenderPipelineRayTracingResources rpRTResources, SharedRTManager sharedRTManager, HDRenderPipeline renderPipeline)
{
// Keep track of the resources
m_TemporalFilterCS = rpRTResources.temporalFilterCS;
// Keep track of the shared rt manager
m_SharedRTManager = sharedRTManager;
m_RenderPipeline = renderPipeline;
}
public void Init(RenderPipelineResources rpResources, SharedRTManager sharedRTManager, HDRenderPipeline renderPipeline)
{
// Keep track of the resources
m_SSGIDenoiserCS = rpResources.shaders.ssGIDenoiserCS;
// Keep track of the shared rt manager
m_SharedRTManager = sharedRTManager;
m_RenderPipeline = renderPipeline;
// Fetch the kernels we are going to require
m_SpatialFilterHalfKernel = m_SSGIDenoiserCS.FindKernel("SpatialFilterHalf");
m_SpatialFilterKernel = m_SSGIDenoiserCS.FindKernel("SpatialFilter");
// Fetch the kernels we are going to require
m_TemporalFilterHalfKernel = m_SSGIDenoiserCS.FindKernel("TemporalFilterHalf");
m_TemporalFilterKernel = m_SSGIDenoiserCS.FindKernel("TemporalFilter");
m_CopyHistory = m_SSGIDenoiserCS.FindKernel("CopyHistory");
}
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 denoisers
m_TemporalFilter.Init(rayTracingResources, m_SharedRTManager);
m_SimpleDenoiser.Init(rayTracingResources, m_SharedRTManager);
m_DiffuseDenoiser.Init(rpResources, 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 Init(HDRenderPipelineRayTracingResources rpRTResources, SharedRTManager sharedRTManager, HDRenderPipeline renderPipeline)
{
m_SimpleDenoiserCS = rpRTResources.simpleDenoiserCS;
m_SharedRTManager = sharedRTManager;
m_RenderPipeline = renderPipeline;
m_BilateralFilterHSingleKernel = m_SimpleDenoiserCS.FindKernel("BilateralFilterHSingle");
m_BilateralFilterVSingleKernel = m_SimpleDenoiserCS.FindKernel("BilateralFilterVSingle");
m_BilateralFilterHColorKernel = m_SimpleDenoiserCS.FindKernel("BilateralFilterHColor");
m_BilateralFilterVColorKernel = m_SimpleDenoiserCS.FindKernel("BilateralFilterVColor");
}
// Denoiser variant for non history array
internal TextureHandle Denoise(RenderGraph renderGraph, HDCamera hdCamera, TemporalFilterParameters filterParams,
TextureHandle noisyBuffer, TextureHandle velocityBuffer,
TextureHandle historyBuffer,
TextureHandle depthBuffer, TextureHandle normalBuffer, TextureHandle motionVectorBuffer, TextureHandle historyValidationBuffer)
{
using (var builder = renderGraph.AddRenderPass <TemporalFilterPassData>("TemporalDenoiser", out var passData, ProfilingSampler.Get(HDProfileId.TemporalFilter)))
{
// Cannot run in async
builder.EnableAsyncCompute(false);
// Camera parameters
passData.texWidth = hdCamera.actualWidth;
passData.texHeight = hdCamera.actualHeight;
passData.viewCount = hdCamera.viewCount;
// Denoising parameters
passData.pixelSpreadTangent = HDRenderPipeline.GetPixelSpreadTangent(hdCamera.camera.fieldOfView, hdCamera.actualWidth, hdCamera.actualHeight);
passData.historyValidity = filterParams.historyValidity;
passData.receiverMotionRejection = filterParams.receiverMotionRejection;
passData.occluderMotionRejection = filterParams.occluderMotionRejection;
passData.exposureControl = filterParams.exposureControl;
// Kernels
passData.temporalAccKernel = filterParams.singleChannel ? m_TemporalAccumulationSingleKernel : m_TemporalAccumulationColorKernel;
passData.copyHistoryKernel = m_CopyHistoryKernel;
// Other parameters
passData.temporalFilterCS = m_TemporalFilterCS;
// Prepass Buffers
passData.depthStencilBuffer = builder.ReadTexture(depthBuffer);
passData.normalBuffer = builder.ReadTexture(normalBuffer);
passData.motionVectorBuffer = builder.ReadTexture(motionVectorBuffer);
// Effect buffers
passData.velocityBuffer = builder.ReadTexture(velocityBuffer);
passData.noisyBuffer = builder.ReadTexture(noisyBuffer);
passData.validationBuffer = builder.ReadTexture(historyValidationBuffer);
// History buffer
passData.historyBuffer = builder.ReadWriteTexture(historyBuffer);
// Output buffers
passData.outputBuffer = builder.ReadWriteTexture(renderGraph.CreateTexture(new TextureDesc(Vector2.one, true, true)
{
colorFormat = GraphicsFormat.R16G16B16A16_SFloat, enableRandomWrite = true, name = "Temporal Filter Output"
}));
builder.SetRenderFunc(
(TemporalFilterPassData data, RenderGraphContext ctx) =>
{
// Evaluate the dispatch parameters
int areaTileSize = 8;
int numTilesX = (data.texWidth + (areaTileSize - 1)) / areaTileSize;
int numTilesY = (data.texHeight + (areaTileSize - 1)) / areaTileSize;
// Now that we have validated our history, let's accumulate
// Bind the input buffers
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.temporalAccKernel, HDShaderIDs._DenoiseInputTexture, data.noisyBuffer);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.temporalAccKernel, HDShaderIDs._HistoryBuffer, data.historyBuffer);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.temporalAccKernel, HDShaderIDs._DepthTexture, data.depthStencilBuffer);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.temporalAccKernel, HDShaderIDs._ValidationBuffer, data.validationBuffer);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.temporalAccKernel, HDShaderIDs._VelocityBuffer, data.velocityBuffer);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.temporalAccKernel, HDShaderIDs._CameraMotionVectorsTexture, data.motionVectorBuffer);
ctx.cmd.SetComputeFloatParam(data.temporalFilterCS, HDShaderIDs._HistoryValidity, data.historyValidity);
ctx.cmd.SetComputeIntParam(data.temporalFilterCS, HDShaderIDs._ReceiverMotionRejection, data.receiverMotionRejection ? 1 : 0);
ctx.cmd.SetComputeIntParam(data.temporalFilterCS, HDShaderIDs._OccluderMotionRejection, data.occluderMotionRejection ? 1 : 0);
ctx.cmd.SetComputeFloatParam(data.temporalFilterCS, HDShaderIDs._PixelSpreadAngleTangent, data.pixelSpreadTangent);
ctx.cmd.SetComputeFloatParam(data.temporalFilterCS, HDShaderIDs._EnableExposureControl, data.exposureControl);
// Bind the output buffer
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.temporalAccKernel, HDShaderIDs._AccumulationOutputTextureRW, data.outputBuffer);
// Combine signal with history
ctx.cmd.DispatchCompute(data.temporalFilterCS, data.temporalAccKernel, numTilesX, numTilesY, data.viewCount);
// Make sure to copy the new-accumulated signal in our history buffer
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.copyHistoryKernel, HDShaderIDs._DenoiseInputTexture, data.outputBuffer);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.copyHistoryKernel, HDShaderIDs._DenoiseOutputTextureRW, data.historyBuffer);
ctx.cmd.DispatchCompute(data.temporalFilterCS, data.copyHistoryKernel, numTilesX, numTilesY, data.viewCount);
});
return(passData.outputBuffer);
}
}
public void Init(HDRenderPipelineRayTracingResources rpRTResources, SharedRTManager sharedRTManager, HDRenderPipeline renderPipeline)
{
m_SimpleDenoiserCS = rpRTResources.simpleDenoiserCS;
m_SharedRTManager = sharedRTManager;
m_RenderPipeline = renderPipeline;
}
// Function that evaluates the history validation Buffer
public TextureHandle HistoryValidity(RenderGraph renderGraph, HDCamera hdCamera, float historyValidity,
TextureHandle depthBuffer, TextureHandle normalBuffer, TextureHandle motionVectorBuffer)
{
using (var builder = renderGraph.AddRenderPass <HistoryValidityPassData>("History Validity Evaluation", out var passData, ProfilingSampler.Get(HDProfileId.HistoryValidity)))
{
// Cannot run in async
builder.EnableAsyncCompute(false);
passData.texWidth = hdCamera.actualWidth;
passData.texHeight = hdCamera.actualHeight;
passData.viewCount = hdCamera.viewCount;
// Denoising parameters
passData.pixelSpreadTangent = HDRenderPipeline.GetPixelSpreadTangent(hdCamera.camera.fieldOfView, hdCamera.actualWidth, hdCamera.actualHeight);
passData.historyValidity = historyValidity;
// Kernels
passData.validateHistoryKernel = m_ValidateHistoryKernel;
// Other parameters
passData.temporalFilterCS = m_TemporalFilterCS;
// Input Buffers
passData.depthStencilBuffer = builder.ReadTexture(depthBuffer);
passData.normalBuffer = builder.ReadTexture(normalBuffer);
if (hdCamera.frameSettings.IsEnabled(FrameSettingsField.MotionVectors))
{
passData.motionVectorBuffer = builder.ReadTexture(motionVectorBuffer);
}
else
{
passData.motionVectorBuffer = builder.ReadTexture(renderGraph.defaultResources.blackTextureXR);
}
// History buffers
passData.historyDepthTexture = builder.ReadTexture(renderGraph.ImportTexture(hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.Depth)));
passData.historyNormalTexture = builder.ReadTexture(renderGraph.ImportTexture(hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.Normal)));
// Output buffers
passData.validationBuffer = builder.WriteTexture(renderGraph.CreateTexture(new TextureDesc(Vector2.one, true, true)
{
colorFormat = GraphicsFormat.R8_UInt, enableRandomWrite = true, name = "ValidationTexture"
}));
builder.SetRenderFunc(
(HistoryValidityPassData data, RenderGraphContext ctx) =>
{
RTHandle historyDepthTexture = data.historyDepthTexture;
RTHandle historyNormalTexture = data.historyNormalTexture;
// If we do not have a depth and normal history buffers, we can skip right away
if (historyDepthTexture == null || historyNormalTexture == null)
{
CoreUtils.SetRenderTarget(ctx.cmd, data.validationBuffer, clearFlag: ClearFlag.Color, Color.black);
return;
}
// Evaluate the dispatch parameters
int areaTileSize = 8;
int numTilesX = (data.texWidth + (areaTileSize - 1)) / areaTileSize;
int numTilesY = (data.texHeight + (areaTileSize - 1)) / areaTileSize;
// First of all we need to validate the history to know where we can or cannot use the history signal
// Bind the input buffers
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.validateHistoryKernel, HDShaderIDs._DepthTexture, data.depthStencilBuffer);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.validateHistoryKernel, HDShaderIDs._HistoryDepthTexture, data.historyDepthTexture);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.validateHistoryKernel, HDShaderIDs._NormalBufferTexture, data.normalBuffer);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.validateHistoryKernel, HDShaderIDs._HistoryNormalTexture, data.historyNormalTexture);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.validateHistoryKernel, HDShaderIDs._CameraMotionVectorsTexture, data.motionVectorBuffer);
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.validateHistoryKernel, HDShaderIDs._StencilTexture, data.depthStencilBuffer, 0, RenderTextureSubElement.Stencil);
// Bind the constants
ctx.cmd.SetComputeFloatParam(data.temporalFilterCS, HDShaderIDs._HistoryValidity, data.historyValidity);
ctx.cmd.SetComputeFloatParam(data.temporalFilterCS, HDShaderIDs._PixelSpreadAngleTangent, data.pixelSpreadTangent);
ctx.cmd.SetComputeIntParam(data.temporalFilterCS, HDShaderIDs._ObjectMotionStencilBit, (int)StencilUsage.ObjectMotionVector);
// Bind the output buffer
ctx.cmd.SetComputeTextureParam(data.temporalFilterCS, data.validateHistoryKernel, HDShaderIDs._ValidationBufferRW, data.validationBuffer);
// Evaluate the validity
ctx.cmd.DispatchCompute(data.temporalFilterCS, data.validateHistoryKernel, numTilesX, numTilesY, data.viewCount);
});
return(passData.validationBuffer);
}
}
void RaytracingRecursiveRender(HDCamera hdCamera, CommandBuffer cmd, ScriptableRenderContext renderContext, CullingResults cull)
{
// First thing to check is: Do we have a valid ray-tracing environment?
RecursiveRendering recursiveSettings = hdCamera.volumeStack.GetComponent <RecursiveRendering>();
// Check the validity of the state before computing the effect
bool invalidState = !hdCamera.frameSettings.IsEnabled(FrameSettingsField.RayTracing) ||
!recursiveSettings.enable.value;
// If any resource or game-object is missing We stop right away
if (invalidState)
{
return;
}
RayTracingShader forwardShader = m_Asset.renderPipelineRayTracingResources.forwardRaytracing;
Shader raytracingMask = m_Asset.renderPipelineRayTracingResources.raytracingFlagMask;
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();
// Fecth the temporary buffers we shall be using
RTHandle flagBuffer = GetRayTracingBuffer(InternalRayTracingBuffers.R0);
if (m_RaytracingFlagMaterial == null)
{
m_RaytracingFlagMaterial = CoreUtils.CreateEngineMaterial(raytracingMask);
}
// Before going into ray tracing, we need to flag which pixels needs to be raytracing
EvaluateRaytracingMask(cull, hdCamera, cmd, renderContext, flagBuffer);
// 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
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.SetRayTracingIntParam(forwardShader, 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);
cmd.SetGlobalInt(HDShaderIDs._DirectionalLightCount, m_lightList.directionalLights.Count);
// 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);
}
void BuildLightData(CommandBuffer cmd, HDCamera hdCamera, HDRayTracingLights rayTracingLights, DebugDisplaySettings debugDisplaySettings)
{
// If no lights, exit
if (rayTracingLights.lightCount == 0)
{
ResizeLightDataBuffer(1);
return;
}
// Also we need to build the light list data
if (m_LightDataGPUArray == null || m_LightDataGPUArray.count != rayTracingLights.lightCount)
{
ResizeLightDataBuffer(rayTracingLights.lightCount);
}
m_LightDataCPUArray.Clear();
// Grab the shadow settings
var hdShadowSettings = hdCamera.volumeStack.GetComponent <HDShadowSettings>();
BoolScalableSetting contactShadowScalableSetting = HDAdditionalLightData.ScalableSettings.UseContactShadow(m_RenderPipeline.asset);
// Build the data for every light
for (int lightIdx = 0; lightIdx < rayTracingLights.hdLightArray.Count; ++lightIdx)
{
// Grab the additinal light data to process
HDAdditionalLightData additionalLightData = rayTracingLights.hdLightArray[lightIdx];
LightData lightData = new LightData();
// When the user deletes a light source in the editor, there is a single frame where the light is null before the collection of light in the scene is triggered
// the workaround for this is simply to add an invalid light for that frame
if (additionalLightData == null)
{
m_LightDataCPUArray.Add(lightData);
continue;
}
// Evaluate all the light type data that we need
LightCategory lightCategory = LightCategory.Count;
GPULightType gpuLightType = GPULightType.Point;
LightVolumeType lightVolumeType = LightVolumeType.Count;
HDLightType lightType = additionalLightData.type;
HDRenderPipeline.EvaluateGPULightType(lightType, additionalLightData.spotLightShape, additionalLightData.areaLightShape, ref lightCategory, ref gpuLightType, ref lightVolumeType);
// Fetch the light component for this light
additionalLightData.gameObject.TryGetComponent(out lightComponent);
// Build the processed light data that we need
ProcessedLightData processedData = new ProcessedLightData();
processedData.additionalLightData = additionalLightData;
processedData.lightType = additionalLightData.type;
processedData.lightCategory = lightCategory;
processedData.gpuLightType = gpuLightType;
processedData.lightVolumeType = lightVolumeType;
// Both of these positions are non-camera-relative.
processedData.distanceToCamera = (additionalLightData.gameObject.transform.position - hdCamera.camera.transform.position).magnitude;
processedData.lightDistanceFade = HDUtils.ComputeLinearDistanceFade(processedData.distanceToCamera, additionalLightData.fadeDistance);
processedData.volumetricDistanceFade = HDUtils.ComputeLinearDistanceFade(processedData.distanceToCamera, additionalLightData.volumetricFadeDistance);
processedData.isBakedShadowMask = HDRenderPipeline.IsBakedShadowMaskLight(lightComponent);
// Build a visible light
Color finalColor = lightComponent.color.linear * lightComponent.intensity;
if (additionalLightData.useColorTemperature)
{
finalColor *= Mathf.CorrelatedColorTemperatureToRGB(lightComponent.colorTemperature);
}
visibleLight.finalColor = finalColor;
visibleLight.range = lightComponent.range;
// This should be done explicitely, localtoworld matrix doesn't work here
localToWorldMatrix.SetColumn(3, lightComponent.gameObject.transform.position);
localToWorldMatrix.SetColumn(2, lightComponent.transform.forward);
localToWorldMatrix.SetColumn(1, lightComponent.transform.up);
localToWorldMatrix.SetColumn(0, lightComponent.transform.right);
visibleLight.localToWorldMatrix = localToWorldMatrix;
visibleLight.spotAngle = lightComponent.spotAngle;
int shadowIndex = additionalLightData.shadowIndex;
int screenSpaceShadowIndex = -1;
int screenSpaceChannelSlot = -1;
Vector3 lightDimensions = new Vector3(0.0f, 0.0f, 0.0f);
// Use the shared code to build the light data
m_RenderPipeline.GetLightData(cmd, hdCamera, hdShadowSettings, visibleLight, lightComponent, in processedData,
shadowIndex, contactShadowScalableSetting, isRasterization: false, ref lightDimensions, ref screenSpaceShadowIndex, ref screenSpaceChannelSlot, ref lightData);
// We make the light position camera-relative as late as possible in order
// to allow the preceding code to work with the absolute world space coordinates.
Vector3 camPosWS = hdCamera.mainViewConstants.worldSpaceCameraPos;
HDRenderPipeline.UpdateLightCameraRelativetData(ref lightData, camPosWS);
// Set the data for this light
m_LightDataCPUArray.Add(lightData);
}
// Push the data to the GPU
m_LightDataGPUArray.SetData(m_LightDataCPUArray);
}
public void PathTracingRender(HDCamera hdCamera, CommandBuffer cmd, 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();
RayTracingShader pathTracingShader = m_Asset.renderPipelineRayTracingResources.pathTracing;
PathTracing pathTracingSettings = VolumeManager.instance.stack.GetComponent <PathTracing>();
LightCluster lightClusterSettings = VolumeManager.instance.stack.GetComponent <LightCluster>();
// Check the validity of the state before computing the effect
bool invalidState = rtEnvironment == null || !pathTracingSettings.enable.value || pathTracingShader == null ||
m_Asset.renderPipelineResources.textures.owenScrambled256Tex == null ||
m_Asset.renderPipelineResources.textures.scramblingTex == null;
// If any resource or game-object is missing We stop right away
if (invalidState)
{
return;
}
// 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 = m_RayTracingManager.RequestAccelerationStructure(rtEnvironment.raytracedLayerMask);
HDRaytracingLightCluster lightCluster = m_RayTracingManager.RequestLightCluster(rtEnvironment.raytracedLayerMask);
// 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, rtEnvironment.rayBias);
cmd.SetGlobalFloat(HDShaderIDs._RaytracingNumSamples, pathTracingSettings.maxSamples.value);
cmd.SetGlobalFloat(HDShaderIDs._RaytracingMinRecursion, pathTracingSettings.minDepth.value);
cmd.SetGlobalFloat(HDShaderIDs._RaytracingMaxRecursion, pathTracingSettings.maxDepth.value);
cmd.SetGlobalFloat(HDShaderIDs._RaytracingIntensityClamp, pathTracingSettings.maxIntensity.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)
float pixelSpreadAngle = hdCamera.camera.fieldOfView * (Mathf.PI / 180.0f) / Mathf.Min(hdCamera.actualWidth, hdCamera.actualHeight);
cmd.SetRayTracingFloatParam(pathTracingShader, 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: directional lights are not supported atm
//cmd.SetGlobalBuffer(HDShaderIDs._DirectionalLightDatas, renderPipeline.directionalLightDatas);
//cmd.SetGlobalInt(HDShaderIDs._DirectionalLightCount, renderPipeline.m_lightList.directionalLights.Count);
// Set the data for the ray miss
cmd.SetRayTracingTextureParam(pathTracingShader, HDShaderIDs._SkyTexture, m_SkyManager.skyReflection);
// 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);
}
