public SSGIDenoiserOutput Denoise(RenderGraph renderGraph, HDCamera hdCamera,
TextureHandle depthPyramid, TextureHandle normalBuffer, TextureHandle motionVectorsBuffer, TextureHandle inputOutputBuffer0, TextureHandle inputOutputBuffer1,
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);
// Input buffers
passData.depthTexture = builder.ReadTexture(depthPyramid);
passData.normalBuffer = builder.ReadTexture(normalBuffer);
passData.motionVectorsBuffer = builder.ReadTexture(motionVectorsBuffer);
// History buffer
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;
passData.intermediateBuffer0 = builder.CreateTransientTexture(new TextureDesc(Vector2.one, true, true)
{
colorFormat = GraphicsFormat.R16G16B16A16_SFloat, enableRandomWrite = true, name = "SSGI Denoiser Intermediate0"
});
passData.intermediateBuffer1 = builder.CreateTransientTexture(new TextureDesc(Vector2.one, true, true)
{
colorFormat = GraphicsFormat.R16G16B16A16_SFloat, enableRandomWrite = true, name = "SSGI Denoiser Intermediate1"
});
passData.inputOutputBuffer0 = builder.ReadWriteTexture(inputOutputBuffer0);
passData.inputOutputBuffer1 = builder.ReadWriteTexture(inputOutputBuffer1);
passData.parameters = PrepareSSGIDenoiserParameters(hdCamera, halfResolution, historyValidity, historyRequireClear, depthMipInfo);
builder.SetRenderFunc(
(DenoiseSSGIPassData data, RenderGraphContext ctx) =>
{
// We need to fill the structure that holds the various resources
SSGIDenoiserResources resources = new SSGIDenoiserResources();
resources.depthTexture = data.depthTexture;
resources.normalBuffer = data.normalBuffer;
resources.motionVectorsBuffer = data.motionVectorsBuffer;
resources.indirectDiffuseHistory0 = data.indirectDiffuseHistory0;
resources.indirectDiffuseHistory1 = data.indirectDiffuseHistory1;
resources.historyDepthBuffer = data.historyDepthBuffer;
resources.intermediateBuffer0 = data.intermediateBuffer0;
resources.intermediateBuffer1 = data.intermediateBuffer1;
resources.inputOutputBuffer0 = data.inputOutputBuffer0;
resources.inputOutputBuffer1 = data.inputOutputBuffer1;
Denoise(ctx.cmd, data.parameters, resources);
});
SSGIDenoiserOutput denoiserOutput = new SSGIDenoiserOutput();
denoiserOutput.outputBuffer0 = inputOutputBuffer0;
denoiserOutput.outputBuffer1 = inputOutputBuffer1;
return(denoiserOutput);
}
}
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);
}
}
