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ue4guide |
Efficient implementation of custom grading/adding custom post process pass
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Look at deferred decals/deferred decal mesh (PostProcessDeferredDecals.cpp & PostProcessMeshDecals.cpp)
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Look at RenderMeshDecals()
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Look at FDecalRendering::BuildVisibleDecalList
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Also look at possibly following UDecalComponent()
- Derive from USceneComponent instead of UPrimitiveComponent and manually add the color grade sphere to a list on FScene in CrateRenderState_Concurrent()
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FDeferredShadingSceneRenderer::Render()
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GCompositionLighting.ProcessAfterBasePass(RHICmdList, Views[ViewIndex])
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FCompositionLighting::ProcessAfterBasePass()
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Sets up composition graph for deferred decals and ambient occlusion
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Deferred decals are done with normal rendering
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Ambient occlusion can be done with Compute shader. Look at AddPostProcessingAmbientOcclusion() for compute shader version of a postprocess pass
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Actual rendering/processing happens in FRCPassPostProcessDeferredDecals::Process() or FRCPassPostProcessAmbientOcclusion::Process()
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