public TextureHandle DenoiseBufferSphere(RenderGraph renderGraph, HDCamera hdCamera,
TextureHandle depthBuffer, TextureHandle normalBuffer,
TextureHandle noisyBuffer, TextureHandle distanceBuffer,
int kernelSize, Vector3 lightPosition, float lightRadius)
{
using (var builder = renderGraph.AddRenderPass <DiffuseShadowDenoiserSpherePassData>("DiffuseDenoiser", out var passData, ProfilingSampler.Get(HDProfileId.DiffuseFilter)))
{
// Cannot run in async
builder.EnableAsyncCompute(false);
// Fetch all the resources
passData.parameters = PrepareDiffuseShadowSphereDenoiserParameters(hdCamera, lightPosition, lightRadius, kernelSize);
// Input buffers
passData.depthStencilBuffer = builder.UseDepthBuffer(depthBuffer, DepthAccess.Read);
passData.normalBuffer = builder.ReadTexture(normalBuffer);
passData.distanceBuffer = builder.ReadTexture(distanceBuffer);
passData.noisyBuffer = builder.ReadTexture(noisyBuffer);
// Temporary buffers
passData.intermediateBuffer = builder.CreateTransientTexture(new TextureDesc(Vector2.one, true, true)
{
colorFormat = GraphicsFormat.R16G16B16A16_SFloat, enableRandomWrite = true, name = "Intermediate buffer"
});
// Output buffer
passData.outputBuffer = builder.ReadTexture(builder.WriteTexture(renderGraph.CreateTexture(new TextureDesc(Vector2.one, true, true)
{
colorFormat = GraphicsFormat.R16G16B16A16_SFloat, enableRandomWrite = true, name = "Denoised Buffer"
})));
passData.outputBuffer = builder.ReadWriteTexture(renderGraph.CreateTexture(new TextureDesc(Vector2.one, true, true)
{
colorFormat = GraphicsFormat.R16G16B16A16_SFloat, enableRandomWrite = true, name = "Denoised Buffer"
}));
passData.outputBuffer = builder.ReadTexture(builder.WriteTexture(renderGraph.CreateTexture(new TextureDesc(Vector2.one, true, true)
{
colorFormat = GraphicsFormat.R16G16B16A16_SFloat, enableRandomWrite = true, name = "Denoised Buffer"
})));
builder.SetRenderFunc(
(DiffuseShadowDenoiserSpherePassData data, RenderGraphContext ctx) =>
{
DiffuseShadowSphereDenoiserResources resources = new DiffuseShadowSphereDenoiserResources();
resources.depthStencilBuffer = data.depthStencilBuffer;
resources.normalBuffer = data.normalBuffer;
resources.distanceBuffer = data.distanceBuffer;
resources.noisyBuffer = data.noisyBuffer;
resources.intermediateBuffer = data.intermediateBuffer;
resources.outputBuffer = data.outputBuffer;
ExecuteDiffuseShadowSphereDenoiser(ctx.cmd, data.parameters, resources);
});
return(passData.outputBuffer);
}
}
public void DenoiseBufferSphere(CommandBuffer cmd, HDCamera hdCamera,
RTHandle noisyBuffer, RTHandle distanceBuffer, RTHandle outputBuffer,
int kernelSize, Vector3 lightPosition, float lightRadius)
{
// Request the intermediate buffers that we need
RTHandle intermediateBuffer = m_RenderPipeline.GetRayTracingBuffer(InternalRayTracingBuffers.RGBA3);
DiffuseShadowSphereDenoiserParameters dssdParams = PrepareDiffuseShadowSphereDenoiserParameters(hdCamera, lightPosition, lightRadius, kernelSize);
DiffuseShadowSphereDenoiserResources dssdResources = PrepareDiffuseShadowSphereDenoiserResources(distanceBuffer, noisyBuffer, intermediateBuffer, outputBuffer);
ExecuteDiffuseShadowSphereDenoiser(cmd, dssdParams, dssdResources);
}
DiffuseShadowSphereDenoiserResources PrepareDiffuseShadowSphereDenoiserResources(RTHandle distanceBuffer, RTHandle noisyBuffer, RTHandle intermediateBuffer, RTHandle outputBuffer)
{
DiffuseShadowSphereDenoiserResources dssdResources = new DiffuseShadowSphereDenoiserResources();
dssdResources.depthStencilBuffer = m_SharedRTManager.GetDepthStencilBuffer();
dssdResources.normalBuffer = m_SharedRTManager.GetNormalBuffer();
dssdResources.distanceBuffer = distanceBuffer;
dssdResources.noisyBuffer = noisyBuffer;
dssdResources.intermediateBuffer = intermediateBuffer;
dssdResources.outputBuffer = outputBuffer;
return(dssdResources);
}
static void ExecuteDiffuseShadowSphereDenoiser(CommandBuffer cmd, DiffuseShadowSphereDenoiserParameters dssdParams, DiffuseShadowSphereDenoiserResources dssdResources)
{
// Evaluate the dispatch parameters
int shadowTileSize = 8;
int numTilesX = (dssdParams.texWidth + (shadowTileSize - 1)) / shadowTileSize;
int numTilesY = (dssdParams.texHeight + (shadowTileSize - 1)) / shadowTileSize;
// Bind input uniforms
cmd.SetComputeIntParam(dssdParams.diffuseShadowDenoiserCS, HDShaderIDs._DenoiserFilterRadius, dssdParams.kernelSize);
cmd.SetComputeVectorParam(dssdParams.diffuseShadowDenoiserCS, HDShaderIDs._SphereLightPosition, dssdParams.lightPosition);
cmd.SetComputeFloatParam(dssdParams.diffuseShadowDenoiserCS, HDShaderIDs._SphereLightRadius, dssdParams.lightRadius);
cmd.SetComputeFloatParam(dssdParams.diffuseShadowDenoiserCS, HDShaderIDs._CameraFOV, dssdParams.cameraFov);
// Bind Input Textures
cmd.SetComputeTextureParam(dssdParams.diffuseShadowDenoiserCS, dssdParams.bilateralHKernel, HDShaderIDs._DepthTexture, dssdResources.depthStencilBuffer);
cmd.SetComputeTextureParam(dssdParams.diffuseShadowDenoiserCS, dssdParams.bilateralHKernel, HDShaderIDs._NormalBufferTexture, dssdResources.normalBuffer);
cmd.SetComputeTextureParam(dssdParams.diffuseShadowDenoiserCS, dssdParams.bilateralHKernel, HDShaderIDs._DenoiseInputTexture, dssdResources.noisyBuffer);
cmd.SetComputeTextureParam(dssdParams.diffuseShadowDenoiserCS, dssdParams.bilateralHKernel, HDShaderIDs._DistanceTexture, dssdResources.distanceBuffer);
// Bind output textures
cmd.SetComputeTextureParam(dssdParams.diffuseShadowDenoiserCS, dssdParams.bilateralHKernel, HDShaderIDs._DenoiseOutputTextureRW, dssdResources.intermediateBuffer);
// Do the Horizontal pass
cmd.DispatchCompute(dssdParams.diffuseShadowDenoiserCS, dssdParams.bilateralHKernel, numTilesX, numTilesY, dssdParams.viewCount);
// Bind input uniforms
cmd.SetComputeIntParam(dssdParams.diffuseShadowDenoiserCS, HDShaderIDs._DenoiserFilterRadius, dssdParams.kernelSize);
cmd.SetComputeVectorParam(dssdParams.diffuseShadowDenoiserCS, HDShaderIDs._SphereLightPosition, dssdParams.lightPosition);
cmd.SetComputeFloatParam(dssdParams.diffuseShadowDenoiserCS, HDShaderIDs._SphereLightRadius, dssdParams.lightRadius);
cmd.SetComputeFloatParam(dssdParams.diffuseShadowDenoiserCS, HDShaderIDs._CameraFOV, dssdParams.cameraFov);
cmd.SetComputeTextureParam(dssdParams.diffuseShadowDenoiserCS, dssdParams.bilateralVKernel, HDShaderIDs._DenoiseInputTexture, dssdResources.intermediateBuffer);
cmd.SetComputeTextureParam(dssdParams.diffuseShadowDenoiserCS, dssdParams.bilateralVKernel, HDShaderIDs._DistanceTexture, dssdResources.distanceBuffer);
cmd.SetComputeTextureParam(dssdParams.diffuseShadowDenoiserCS, dssdParams.bilateralVKernel, HDShaderIDs._DepthTexture, dssdResources.depthStencilBuffer);
cmd.SetComputeTextureParam(dssdParams.diffuseShadowDenoiserCS, dssdParams.bilateralVKernel, HDShaderIDs._NormalBufferTexture, dssdResources.normalBuffer);
// Bind output textures
cmd.SetComputeTextureParam(dssdParams.diffuseShadowDenoiserCS, dssdParams.bilateralVKernel, HDShaderIDs._DenoiseOutputTextureRW, dssdResources.outputBuffer);
// Do the Vertical pass
cmd.DispatchCompute(dssdParams.diffuseShadowDenoiserCS, dssdParams.bilateralVKernel, numTilesX, numTilesY, dssdParams.viewCount);
}
