void RenderIndirectDiffusePerformance(HDCamera hdCamera, CommandBuffer cmd, ScriptableRenderContext renderContext, int frameCount)
{
// Fetch the required resources
var settings = hdCamera.volumeStack.GetComponent <GlobalIllumination>();
// Request the intermediate texture we will be using
RTHandle directionBuffer = GetRayTracingBuffer(InternalRayTracingBuffers.Direction);
RTHandle intermediateBuffer1 = GetRayTracingBuffer(InternalRayTracingBuffers.RGBA1);
using (new ProfilingScope(cmd, ProfilingSampler.Get(HDProfileId.RaytracingIndirectDiffuseDirectionGeneration)))
{
// Prepare the components for the direction generation
RTIndirectDiffuseDirGenParameters rtidDirGenParameters = PrepareRTIndirectDiffuseDirGenParameters(hdCamera, settings);
RTIndirectDiffuseDirGenResources rtidDirGenResousources = PrepareRTIndirectDiffuseDirGenResources(hdCamera, directionBuffer);
RTIndirectDiffuseDirGen(cmd, rtidDirGenParameters, rtidDirGenResousources);
}
using (new ProfilingScope(cmd, ProfilingSampler.Get(HDProfileId.RaytracingIndirectDiffuseEvaluation)))
{
// Prepare the components for the deferred lighting
DeferredLightingRTParameters deferredParamters = PrepareIndirectDiffuseDeferredLightingRTParameters(hdCamera);
DeferredLightingRTResources deferredResources = PrepareDeferredLightingRTResources(hdCamera, directionBuffer, intermediateBuffer1);
RenderRaytracingDeferredLighting(cmd, deferredParamters, deferredResources);
}
using (new ProfilingScope(cmd, ProfilingSampler.Get(HDProfileId.RaytracingIndirectDiffuseUpscale)))
{
// Upscale the indirect diffuse buffer
RTIndirectDiffuseUpscaleParameters rtidUpscaleParameters = PrepareRTIndirectDiffuseUpscaleParameters(hdCamera, settings);
RTIndirectDiffuseUpscaleResources rtidUpscaleResources = PrepareRTIndirectDiffuseUpscaleResources(hdCamera, intermediateBuffer1, directionBuffer, m_IndirectDiffuseBuffer0);
RTIndirectDiffuseUpscale(cmd, rtidUpscaleParameters, rtidUpscaleResources);
}
using (new ProfilingScope(cmd, ProfilingSampler.Get(HDProfileId.RaytracingFilterIndirectDiffuse)))
{
// Denoise if required
if (settings.denoise)
{
DenoiseIndirectDiffuseBuffer(hdCamera, cmd, settings);
}
}
using (new ProfilingScope(cmd, ProfilingSampler.Get(HDProfileId.RaytracingIndirectDiffuseAdjustWeight)))
{
// Upscale the indirect diffuse buffer
AdjustRTIDWeightParameters artidParamters = PrepareAdjustRTIDWeightParametersParameters(hdCamera);
AdjustRTIDWeight(cmd, artidParamters, m_IndirectDiffuseBuffer0, m_SharedRTManager.GetDepthStencilBuffer(), m_SharedRTManager.GetStencilBuffer());
}
}
RTIndirectDiffuseUpscaleResources PrepareRTIndirectDiffuseUpscaleResources(HDCamera hdCamera, RTHandle indirectDiffuseBuffer, RTHandle directionBuffer, RTHandle outputBuffer)
{
RTIndirectDiffuseUpscaleResources rtidUpscaleResources = new RTIndirectDiffuseUpscaleResources();
// Input buffers
rtidUpscaleResources.depthStencilBuffer = m_SharedRTManager.GetDepthStencilBuffer();
rtidUpscaleResources.normalBuffer = m_SharedRTManager.GetNormalBuffer();
rtidUpscaleResources.indirectDiffuseBuffer = indirectDiffuseBuffer;
rtidUpscaleResources.directionBuffer = directionBuffer;
// Output buffers
rtidUpscaleResources.outputBuffer = outputBuffer;
return(rtidUpscaleResources);
}
static void RTIndirectDiffuseUpscale(CommandBuffer cmd, RTIndirectDiffuseUpscaleParameters rtidUpscaleParams, RTIndirectDiffuseUpscaleResources rtidUpscaleResources)
{
// Inject all the parameters for the compute
cmd.SetComputeTextureParam(rtidUpscaleParams.upscaleCS, rtidUpscaleParams.upscaleKernel, HDShaderIDs._DepthTexture, rtidUpscaleResources.depthStencilBuffer);
cmd.SetComputeTextureParam(rtidUpscaleParams.upscaleCS, rtidUpscaleParams.upscaleKernel, HDShaderIDs._NormalBufferTexture, rtidUpscaleResources.normalBuffer);
cmd.SetComputeTextureParam(rtidUpscaleParams.upscaleCS, rtidUpscaleParams.upscaleKernel, HDShaderIDs._IndirectDiffuseTexture, rtidUpscaleResources.indirectDiffuseBuffer);
cmd.SetComputeTextureParam(rtidUpscaleParams.upscaleCS, rtidUpscaleParams.upscaleKernel, HDShaderIDs._RaytracingDirectionBuffer, rtidUpscaleResources.directionBuffer);
cmd.SetComputeTextureParam(rtidUpscaleParams.upscaleCS, rtidUpscaleParams.upscaleKernel, HDShaderIDs._BlueNoiseTexture, rtidUpscaleParams.blueNoiseTexture);
cmd.SetComputeTextureParam(rtidUpscaleParams.upscaleCS, rtidUpscaleParams.upscaleKernel, HDShaderIDs._ScramblingTexture, rtidUpscaleParams.scramblingTexture);
cmd.SetComputeIntParam(rtidUpscaleParams.upscaleCS, HDShaderIDs._SpatialFilterRadius, rtidUpscaleParams.upscaleRadius);
// Output buffer
cmd.SetComputeTextureParam(rtidUpscaleParams.upscaleCS, rtidUpscaleParams.upscaleKernel, HDShaderIDs._UpscaledIndirectDiffuseTextureRW, rtidUpscaleResources.outputBuffer);
// Texture dimensions
int texWidth = rtidUpscaleParams.texWidth;
int texHeight = rtidUpscaleParams.texHeight;
// Evaluate the dispatch parameters
int areaTileSize = 8;
int numTilesXHR = (texWidth + (areaTileSize - 1)) / areaTileSize;
int numTilesYHR = (texHeight + (areaTileSize - 1)) / areaTileSize;
// Compute the texture
cmd.DispatchCompute(rtidUpscaleParams.upscaleCS, rtidUpscaleParams.upscaleKernel, numTilesXHR, numTilesYHR, rtidUpscaleParams.viewCount);
}
