public void RenderRTAO(HDCamera hdCamera, CommandBuffer cmd, RTHandle outputTexture, ShaderVariablesRaytracing globalCB, ScriptableRenderContext renderContext, int frameCount)
{
if (!m_RenderPipeline.GetRayTracingState())
{
SetDefaultAmbientOcclusionTexture(cmd);
return;
}
AmbientOcclusionTraceParameters aoTraceParameters = PrepareAmbientOcclusionTraceParameters(hdCamera, globalCB);
AmbientOcclusionTraceResources aoTraceResources = PrepareAmbientOcclusionTraceResources(hdCamera, m_AOIntermediateBuffer0);
// If any of the previous requirements is missing, the effect is not requested or no acceleration structure, set the default one and leave right away
using (new ProfilingScope(cmd, ProfilingSampler.Get(HDProfileId.RaytracingAmbientOcclusion)))
{
TraceAO(cmd, aoTraceParameters, aoTraceResources);
}
AmbientOcclusionDenoiseParameters aoDenoiseParameters = PrepareAmbientOcclusionDenoiseParameters(hdCamera, globalCB);
AmbientOcclusionDenoiseResources aoDenoiserResources = PrepareAmbientOcclusionDenoiseResources(hdCamera, m_AOIntermediateBuffer0, m_AOIntermediateBuffer1, outputTexture);
using (new ProfilingScope(cmd, ProfilingSampler.Get(HDProfileId.RaytracingFilterAmbientOcclusion)))
{
DenoiseAO(cmd, hdCamera, aoDenoiseParameters, aoDenoiserResources);
}
AmbientOcclusionComposeParameters aoComposeParameters = PrepareAmbientOcclusionComposeParameters(hdCamera, globalCB);
using (new ProfilingScope(cmd, ProfilingSampler.Get(HDProfileId.RaytracingComposeAmbientOcclusion)))
{
ComposeAO(cmd, hdCamera, aoComposeParameters, outputTexture);
}
}
AmbientOcclusionDenoiseResources PrepareAmbientOcclusionDenoiseResources(HDCamera hdCamera, RTHandle inputTexture, RTHandle intermediateTexture, RTHandle outputTexture)
{
AmbientOcclusionDenoiseResources rtAOResources = new AmbientOcclusionDenoiseResources();
rtAOResources.ambientOcclusionHistory = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.RaytracedAmbientOcclusion)
?? hdCamera.AllocHistoryFrameRT((int)HDCameraFrameHistoryType.RaytracedAmbientOcclusion, AmbientOcclusionHistoryBufferAllocatorFunction, 1);
rtAOResources.inputTexture = inputTexture;
rtAOResources.intermediateBuffer = intermediateTexture;
rtAOResources.outputTexture = outputTexture;
return(rtAOResources);
}
public void DenoiseAO(CommandBuffer cmd, HDCamera hdCamera, AmbientOcclusionDenoiseParameters aoDenoiseParameters, AmbientOcclusionDenoiseResources aoDenoiseResources)
{
if (aoDenoiseParameters.denoise)
{
// Apply the temporal denoiser
HDTemporalFilter temporalFilter = m_RenderPipeline.GetTemporalFilter();
temporalFilter.DenoiseBuffer(cmd, hdCamera, aoDenoiseResources.inputTexture, aoDenoiseResources.ambientOcclusionHistory, aoDenoiseResources.intermediateBuffer, historyValidity: aoDenoiseParameters.historyValidity);
// Apply the diffuse denoiser
HDDiffuseDenoiser diffuseDenoiser = m_RenderPipeline.GetDiffuseDenoiser();
diffuseDenoiser.DenoiseBuffer(cmd, hdCamera, aoDenoiseResources.intermediateBuffer, aoDenoiseResources.outputTexture, aoDenoiseParameters.denoiserRadius);
}
else
{
HDUtils.BlitCameraTexture(cmd, aoDenoiseResources.inputTexture, aoDenoiseResources.outputTexture);
}
}
public void DenoiseAO(CommandBuffer cmd, HDCamera hdCamera, AmbientOcclusionDenoiseParameters aoDenoiseParameters, AmbientOcclusionDenoiseResources aoDenoiseResources)
{
if (aoDenoiseParameters.denoise)
{
// Prepare and execute the temporal filter
HDTemporalFilter temporalFilter = m_RenderPipeline.GetTemporalFilter();
TemporalFilterParameters tfParameters = temporalFilter.PrepareTemporalFilterParameters(hdCamera, true, aoDenoiseParameters.historyValidity);
RTHandle validationBuffer = m_RenderPipeline.GetRayTracingBuffer(InternalRayTracingBuffers.R0);
TemporalFilterResources tfResources = temporalFilter.PrepareTemporalFilterResources(hdCamera, validationBuffer, aoDenoiseResources.inputTexture, aoDenoiseResources.ambientOcclusionHistory, aoDenoiseResources.intermediateBuffer);
HDTemporalFilter.DenoiseBuffer(cmd, tfParameters, tfResources);
// Apply the diffuse denoiser
HDDiffuseDenoiser diffuseDenoiser = m_RenderPipeline.GetDiffuseDenoiser();
DiffuseDenoiserParameters ddParams = diffuseDenoiser.PrepareDiffuseDenoiserParameters(hdCamera, true, aoDenoiseParameters.denoiserRadius, false);
RTHandle intermediateBuffer = m_RenderPipeline.GetRayTracingBuffer(InternalRayTracingBuffers.RGBA0);
DiffuseDenoiserResources ddResources = diffuseDenoiser.PrepareDiffuseDenoiserResources(aoDenoiseResources.intermediateBuffer, intermediateBuffer, aoDenoiseResources.outputTexture);
HDDiffuseDenoiser.DenoiseBuffer(cmd, ddParams, ddResources);
}
else
{
HDUtils.BlitCameraTexture(cmd, aoDenoiseResources.inputTexture, aoDenoiseResources.outputTexture);
}
}
