void RenderIndirectDiffuseQuality(HDCamera hdCamera, CommandBuffer cmd, ScriptableRenderContext renderContext, int frameCount)
{
// First thing to check is: Do we have a valid ray-tracing environment?
GlobalIllumination giSettings = hdCamera.volumeStack.GetComponent <GlobalIllumination>();
using (new ProfilingScope(cmd, ProfilingSampler.Get(HDProfileId.RaytracingIndirectDiffuseEvaluation)))
{
// Evaluate the signal
QualityRTIndirectDiffuseParameters qrtidParameters = PrepareQualityRTIndirectDiffuseParameters(hdCamera, giSettings);
QualityRTIndirectDiffuseResources qrtidResources = PrepareQualityRTIndirectDiffuseResources(m_IndirectDiffuseBuffer0);
RenderQualityRayTracedIndirectDiffuse(cmd, qrtidParameters, qrtidResources);
}
using (new ProfilingScope(cmd, ProfilingSampler.Get(HDProfileId.RaytracingFilterIndirectDiffuse)))
{
if (giSettings.denoise)
{
DenoiseIndirectDiffuseBuffer(hdCamera, cmd, giSettings);
}
}
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());
}
}
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());
}
}
AdjustRTIDWeightParameters PrepareAdjustRTIDWeightParametersParameters(HDCamera hdCamera)
{
AdjustRTIDWeightParameters parameters = new AdjustRTIDWeightParameters();
// Set the camera parameters
parameters.texWidth = hdCamera.actualWidth;
parameters.texHeight = hdCamera.actualHeight;
parameters.viewCount = hdCamera.viewCount;
// Grab the right kernel
parameters.adjustWeightCS = m_Asset.renderPipelineRayTracingResources.indirectDiffuseRaytracingCS;
parameters.adjustWeightKernel = m_AdjustIndirectDiffuseWeightKernel;
return(parameters);
}
static void AdjustRTIDWeight(CommandBuffer cmd, AdjustRTIDWeightParameters parameters, RTHandle indirectDiffuseTexture, RTHandle depthPyramid, RTHandle stencilBuffer)
{
// Input data
cmd.SetComputeTextureParam(parameters.adjustWeightCS, parameters.adjustWeightKernel, HDShaderIDs._DepthTexture, depthPyramid);
cmd.SetComputeTextureParam(parameters.adjustWeightCS, parameters.adjustWeightKernel, HDShaderIDs._StencilTexture, stencilBuffer, 0, RenderTextureSubElement.Stencil);
cmd.SetComputeIntParams(parameters.adjustWeightCS, HDShaderIDs._SsrStencilBit, (int)StencilUsage.TraceReflectionRay);
// In/Output buffer
cmd.SetComputeTextureParam(parameters.adjustWeightCS, parameters.adjustWeightKernel, HDShaderIDs._IndirectDiffuseTextureRW, indirectDiffuseTexture);
// Texture dimensions
int texWidth = parameters.texWidth;
int texHeight = parameters.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(parameters.adjustWeightCS, parameters.adjustWeightKernel, numTilesXHR, numTilesYHR, parameters.viewCount);
}