void RenderReflectionsPerformance(HDCamera hdCamera, CommandBuffer cmd, RTHandle outputTexture, ScriptableRenderContext renderContext, int frameCount, bool transparent)
{
// Fetch the required resources
RTHandle intermediateBuffer0 = GetRayTracingBuffer(InternalRayTracingBuffers.RGBA0);
RTHandle intermediateBuffer1 = GetRayTracingBuffer(InternalRayTracingBuffers.RGBA1);
// Fetch all the settings
ScreenSpaceReflection settings = hdCamera.volumeStack.GetComponent <ScreenSpaceReflection>();
// Generate the signal
using (new ProfilingScope(cmd, ProfilingSampler.Get(HDProfileId.RaytracingReflectionDirectionGeneration)))
{
// Prepare the components for the direction generation
RTReflectionDirGenParameters rtrDirGenParameters = PrepareRTReflectionDirGenParameters(hdCamera, transparent, settings);
RTReflectionDirGenResources rtrDirGenResousources = PrepareRTReflectionDirGenResources(hdCamera, intermediateBuffer1);
RTReflectionDirectionGeneration(cmd, rtrDirGenParameters, rtrDirGenResousources);
}
using (new ProfilingScope(cmd, ProfilingSampler.Get(HDProfileId.RaytracingReflectionEvaluation)))
{
// Prepare the components for the deferred lighting
DeferredLightingRTParameters deferredParamters = PrepareReflectionDeferredLightingRTParameters(hdCamera);
DeferredLightingRTResources deferredResources = PrepareDeferredLightingRTResources(hdCamera, intermediateBuffer1, intermediateBuffer0);
RenderRaytracingDeferredLighting(cmd, deferredParamters, deferredResources);
}
using (new ProfilingScope(cmd, ProfilingSampler.Get(HDProfileId.RaytracingReflectionUpscaleGeneration)))
{
// Prepare the parameters for the upscale pass
RTReflectionUpscaleParameters rtrUpscaleParameters = PrepareRTReflectionUpscaleParameters(hdCamera, settings);
RTReflectionUpscaleResources rtrUpscaleResources = PrepareRTReflectionUpscaleResources(hdCamera, intermediateBuffer0, intermediateBuffer1, outputTexture);
UpscaleRTReflections(cmd, rtrUpscaleParameters, rtrUpscaleResources);
}
// Denoise if required
if (settings.denoise && !transparent)
{
using (new ProfilingScope(cmd, ProfilingSampler.Get(HDProfileId.RaytracingFilterReflection)))
{
// Grab the history buffer
RTHandle reflectionHistory = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.RaytracedReflection)
?? hdCamera.AllocHistoryFrameRT((int)HDCameraFrameHistoryType.RaytracedReflection, ReflectionHistoryBufferAllocatorFunction, 1);
// Prepare the parameters and the resources
HDReflectionDenoiser reflectionDenoiser = GetReflectionDenoiser();
ReflectionDenoiserParameters reflDenoiserParameters = reflectionDenoiser.PrepareReflectionDenoiserParameters(hdCamera, EvaluateHistoryValidity(hdCamera), settings.denoiserRadius);
ReflectionDenoiserResources reflectionDenoiserResources = reflectionDenoiser.PrepareReflectionDenoiserResources(hdCamera, outputTexture, reflectionHistory,
intermediateBuffer0, intermediateBuffer1);
// Denoise
HDReflectionDenoiser.DenoiseBuffer(cmd, reflDenoiserParameters, reflectionDenoiserResources);
}
}
}
RTReflectionUpscaleResources PrepareRTReflectionUpscaleResources(HDCamera hdCamera, RTHandle lightingTexture, RTHandle hitPointTexture, RTHandle outputTexture)
{
RTReflectionUpscaleResources rtrUpscaleResources = new RTReflectionUpscaleResources();
rtrUpscaleResources.depthStencilBuffer = m_SharedRTManager.GetDepthStencilBuffer();
rtrUpscaleResources.normalBuffer = m_SharedRTManager.GetNormalBuffer();
rtrUpscaleResources.lightingTexture = lightingTexture;
rtrUpscaleResources.hitPointTexture = hitPointTexture;
rtrUpscaleResources.outputTexture = outputTexture;
rtrUpscaleResources.clearCoatMaskTexture = hdCamera.frameSettings.litShaderMode == LitShaderMode.Deferred ? m_GbufferManager.GetBuffersRTI()[2] : TextureXR.GetBlackTexture();
return(rtrUpscaleResources);
}
static void UpscaleRTReflections(CommandBuffer cmd, RTReflectionUpscaleParameters rtrUpscaleParameters, RTReflectionUpscaleResources rtrUpscaleResources)
{
// Inject all the parameters for the compute
cmd.SetComputeTextureParam(rtrUpscaleParameters.reflectionFilterCS, rtrUpscaleParameters.upscaleKernel, HDShaderIDs._SsrLightingTextureRW, rtrUpscaleResources.lightingTexture);
cmd.SetComputeTextureParam(rtrUpscaleParameters.reflectionFilterCS, rtrUpscaleParameters.upscaleKernel, HDShaderIDs._SsrHitPointTexture, rtrUpscaleResources.hitPointTexture);
cmd.SetComputeTextureParam(rtrUpscaleParameters.reflectionFilterCS, rtrUpscaleParameters.upscaleKernel, HDShaderIDs._DepthTexture, rtrUpscaleResources.depthStencilBuffer);
cmd.SetComputeTextureParam(rtrUpscaleParameters.reflectionFilterCS, rtrUpscaleParameters.upscaleKernel, HDShaderIDs._NormalBufferTexture, rtrUpscaleResources.normalBuffer);
cmd.SetComputeTextureParam(rtrUpscaleParameters.reflectionFilterCS, rtrUpscaleParameters.upscaleKernel, HDShaderIDs._BlueNoiseTexture, rtrUpscaleParameters.blueNoiseTexture);
cmd.SetComputeTextureParam(rtrUpscaleParameters.reflectionFilterCS, rtrUpscaleParameters.upscaleKernel, HDShaderIDs._RaytracingReflectionTexture, rtrUpscaleResources.outputTexture);
cmd.SetComputeIntParam(rtrUpscaleParameters.reflectionFilterCS, HDShaderIDs._SpatialFilterRadius, rtrUpscaleParameters.upscaleRadius);
cmd.SetComputeIntParam(rtrUpscaleParameters.reflectionFilterCS, HDShaderIDs._RaytracingDenoiseRadius, rtrUpscaleParameters.denoise ? rtrUpscaleParameters.denoiserRadius : 0);
cmd.SetComputeTextureParam(rtrUpscaleParameters.reflectionFilterCS, rtrUpscaleParameters.upscaleKernel, HDShaderIDs._SsrClearCoatMaskTexture, rtrUpscaleResources.clearCoatMaskTexture);
// Compute the texture
int numTilesXHR = (rtrUpscaleParameters.texWidth + (rtReflectionsComputeTileSize - 1)) / rtReflectionsComputeTileSize;
int numTilesYHR = (rtrUpscaleParameters.texHeight + (rtReflectionsComputeTileSize - 1)) / rtReflectionsComputeTileSize;
cmd.DispatchCompute(rtrUpscaleParameters.reflectionFilterCS, rtrUpscaleParameters.upscaleKernel, numTilesXHR, numTilesYHR, rtrUpscaleParameters.viewCount);
}
