public void DenoiseBufferDirectional(CommandBuffer cmd, HDCamera hdCamera,
RTHandle noisyBuffer, RTHandle distanceBuffer, RTHandle outputBuffer,
int kernelSize, float angularDiameter, bool singleChannel = true)
{
// Request the intermediate buffer we need
RTHandle intermediateBuffer = m_RenderPipeline.GetRayTracingBuffer(InternalRayTracingBuffers.RGBA3);
DiffuseShadowDirectionalDenoiserParameters dsddParams = PrepareDiffuseShadowDirectionalDenoiserParameters(hdCamera, angularDiameter, kernelSize, singleChannel);
DiffuseShadowDirectionalDenoiserResources dsddResources = PrepareDiffuseShadowDirectionalDenoiserResources(distanceBuffer, noisyBuffer, intermediateBuffer, outputBuffer);
ExecuteDiffuseShadowDirectionalDenoiser(cmd, dsddParams, dsddResources);
}
static void ExecuteDiffuseShadowDirectionalDenoiser(CommandBuffer cmd, DiffuseShadowDirectionalDenoiserParameters dsddParams, DiffuseShadowDirectionalDenoiserResources dsddResources)
{
// Evaluate the dispatch parameters
int denoiserTileSize = 8;
int numTilesX = (dsddParams.texWidth + (denoiserTileSize - 1)) / denoiserTileSize;
int numTilesY = (dsddParams.texHeight + (denoiserTileSize - 1)) / denoiserTileSize;
// Bind input uniforms
cmd.SetComputeFloatParam(dsddParams.diffuseShadowDenoiserCS, HDShaderIDs._DirectionalLightAngle, dsddParams.lightAngle);
cmd.SetComputeIntParam(dsddParams.diffuseShadowDenoiserCS, HDShaderIDs._DenoiserFilterRadius, dsddParams.kernelSize);
cmd.SetComputeFloatParam(dsddParams.diffuseShadowDenoiserCS, HDShaderIDs._CameraFOV, dsddParams.cameraFov);
// Bind Input Textures
cmd.SetComputeTextureParam(dsddParams.diffuseShadowDenoiserCS, dsddParams.bilateralHKernel, HDShaderIDs._DepthTexture, dsddResources.depthStencilBuffer);
cmd.SetComputeTextureParam(dsddParams.diffuseShadowDenoiserCS, dsddParams.bilateralHKernel, HDShaderIDs._NormalBufferTexture, dsddResources.normalBuffer);
cmd.SetComputeTextureParam(dsddParams.diffuseShadowDenoiserCS, dsddParams.bilateralHKernel, HDShaderIDs._DenoiseInputTexture, dsddResources.noisyBuffer);
cmd.SetComputeTextureParam(dsddParams.diffuseShadowDenoiserCS, dsddParams.bilateralHKernel, HDShaderIDs._DistanceTexture, dsddResources.distanceBuffer);
// Bind output textures
cmd.SetComputeTextureParam(dsddParams.diffuseShadowDenoiserCS, dsddParams.bilateralHKernel, HDShaderIDs._DenoiseOutputTextureRW, dsddResources.intermediateBuffer);
// Do the Horizontal pass
cmd.DispatchCompute(dsddParams.diffuseShadowDenoiserCS, dsddParams.bilateralHKernel, numTilesX, numTilesY, dsddParams.viewCount);
// Bind input uniforms
cmd.SetComputeIntParam(dsddParams.diffuseShadowDenoiserCS, HDShaderIDs._DenoiserFilterRadius, dsddParams.kernelSize);
cmd.SetComputeFloatParam(dsddParams.diffuseShadowDenoiserCS, HDShaderIDs._DirectionalLightAngle, dsddParams.lightAngle);
cmd.SetComputeFloatParam(dsddParams.diffuseShadowDenoiserCS, HDShaderIDs._CameraFOV, dsddParams.cameraFov);
// Bind Input Textures
cmd.SetComputeTextureParam(dsddParams.diffuseShadowDenoiserCS, dsddParams.bilateralVKernel, HDShaderIDs._DepthTexture, dsddResources.depthStencilBuffer);
cmd.SetComputeTextureParam(dsddParams.diffuseShadowDenoiserCS, dsddParams.bilateralVKernel, HDShaderIDs._NormalBufferTexture, dsddResources.normalBuffer);
cmd.SetComputeTextureParam(dsddParams.diffuseShadowDenoiserCS, dsddParams.bilateralVKernel, HDShaderIDs._DenoiseInputTexture, dsddResources.intermediateBuffer);
cmd.SetComputeTextureParam(dsddParams.diffuseShadowDenoiserCS, dsddParams.bilateralVKernel, HDShaderIDs._DistanceTexture, dsddResources.distanceBuffer);
// Bind output textures
cmd.SetComputeTextureParam(dsddParams.diffuseShadowDenoiserCS, dsddParams.bilateralVKernel, HDShaderIDs._DenoiseOutputTextureRW, dsddResources.outputBuffer);
// Do the Vertical pass
cmd.DispatchCompute(dsddParams.diffuseShadowDenoiserCS, dsddParams.bilateralVKernel, numTilesX, numTilesY, dsddParams.viewCount);
}
DiffuseShadowDirectionalDenoiserParameters PrepareDiffuseShadowDirectionalDenoiserParameters(HDCamera hdCamera, float angularDiameter, int kernelSize, bool singleChannel)
{
DiffuseShadowDirectionalDenoiserParameters dsddParams = new DiffuseShadowDirectionalDenoiserParameters();
// Set the camera parameters
dsddParams.texWidth = hdCamera.actualWidth;
dsddParams.texHeight = hdCamera.actualHeight;
dsddParams.viewCount = hdCamera.viewCount;
// Evaluation parameters
dsddParams.cameraFov = hdCamera.camera.fieldOfView * Mathf.PI / 180.0f;
// Convert the angular diameter of the directional light to radians (from degrees)
dsddParams.lightAngle = angularDiameter * Mathf.PI / 180.0f;
dsddParams.kernelSize = kernelSize;
// Kernels
dsddParams.bilateralHKernel = singleChannel ? m_BilateralFilterHSingleDirectionalKernel : m_BilateralFilterHColorDirectionalKernel;
dsddParams.bilateralVKernel = singleChannel ? m_BilateralFilterVSingleDirectionalKernel : m_BilateralFilterVColorDirectionalKernel;
// Other parameters
dsddParams.diffuseShadowDenoiserCS = m_ShadowDenoiser;
return(dsddParams);
}
