DiffuseShadowSphereDenoiserParameters PrepareDiffuseShadowSphereDenoiserParameters(HDCamera hdCamera, Vector3 lightPosition, float lightRadius, int kernelSize)
{
DiffuseShadowSphereDenoiserParameters dssdParams = new DiffuseShadowSphereDenoiserParameters();
// Set the camera parameters
dssdParams.texWidth = hdCamera.actualWidth;
dssdParams.texHeight = hdCamera.actualHeight;
dssdParams.viewCount = hdCamera.viewCount;
// Evaluation parameters
dssdParams.cameraFov = hdCamera.camera.fieldOfView * Mathf.PI / 180.0f;
dssdParams.lightPosition = lightPosition;
// Make sure the position is in the right space before injecting it
if (ShaderConfig.s_CameraRelativeRendering != 0)
{
dssdParams.lightPosition -= hdCamera.camera.transform.position;
}
dssdParams.lightRadius = lightRadius;
dssdParams.kernelSize = kernelSize;
// Kernels
dssdParams.bilateralHKernel = m_BilateralFilterHSingleSphereKernel;
dssdParams.bilateralVKernel = m_BilateralFilterVSingleSphereKernel;
// Other parameters
dssdParams.diffuseShadowDenoiserCS = m_ShadowDenoiser;
return(dssdParams);
}
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);
}
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);
}
DiffuseShadowSphereDenoiserParameters PrepareDiffuseShadowSphereDenoiserParameters(HDCamera hdCamera, Vector3 lightPosition, float lightRadius, int kernelSize)
{
DiffuseShadowSphereDenoiserParameters dssdParams = new DiffuseShadowSphereDenoiserParameters();
// Set the camera parameters
dssdParams.texWidth = hdCamera.actualWidth;
dssdParams.texHeight = hdCamera.actualHeight;
dssdParams.viewCount = hdCamera.viewCount;
// Evaluation parameters
dssdParams.cameraFov = hdCamera.camera.fieldOfView * Mathf.PI / 180.0f;
dssdParams.lightPosition = lightPosition;
dssdParams.lightRadius = lightRadius;
dssdParams.kernelSize = kernelSize;
// Kernels
dssdParams.bilateralHKernel = m_BilateralFilterHSingleSphereKernel;
dssdParams.bilateralVKernel = m_BilateralFilterVSingleSphereKernel;
// Other parameters
dssdParams.diffuseShadowDenoiserCS = m_ShadowDenoiser;
return(dssdParams);
}
