LumenRadianceCacheInternal.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "Lumen/LumenRadianceCache.h"
#include "Lumen/LumenViewState.h"
 
namespace LumenRadianceCache
{
    // Must match *.usf
    const int32 TRACE_TILE_SIZE_2D = 8;
    const int32 TRACE_TILE_ATLAS_STRITE_IN_TILES = 512;
 
    class FRadianceCacheSetup
    {
    public:
        TArray<FRadianceCacheClipmap> LastFrameClipmaps;
        FRDGTextureRef DepthProbeAtlasTexture;
        FRDGTextureRef FinalIrradianceAtlas;
        FRDGTextureRef ProbeOcclusionAtlas;
        FRDGTextureRef FinalRadianceAtlas;
        FRDGTextureRef FinalSkyVisibilityAtlas;
        FRDGTextureRef RadianceProbeAtlasTextureSource;
        FRDGTextureRef SkyVisibilityProbeAtlasTextureSource;
        bool bPersistentCache;
    };
 
    void RenderLumenHardwareRayTracingRadianceCache(
        FRDGBuilder& GraphBuilder,
        const FScene* Scene,
        const FLumenSceneFrameTemporaries& FrameTemporaries,
        const TInlineArray<FUpdateInputs>& InputArray,
        TInlineArray<FUpdateOutputs>& OutputArray,
        const TInlineArray<FRadianceCacheSetup>& SetupOutputArray,
        const TInlineArray<FRDGBufferRef>& ProbeTraceTileAllocatorArray,
        const TInlineArray<FRDGBufferRef>& ProbeTraceTileDataArray,
        const TInlineArray<FRDGBufferRef>& ProbeTraceDataArray,
        const TInlineArray<FRDGBufferRef>& HardwareRayTracingRayAllocatorBufferArray,
        const TInlineArray<FRDGBufferRef>& TraceProbesIndirectArgsArray,
        ERDGPassFlags ComputePassFlags);
 
    void RenderLumenHardwareRayTracingRadianceCache_REMOVE(
        FRDGBuilder& GraphBuilder,
        const FScene* Scene,
        const FSceneTextureParameters& SceneTextures,
        const FViewInfo& View,
        const FLumenCardTracingParameters& TracingParameters,
        const LumenRadianceCache::FRadianceCacheInterpolationParameters& RadianceCacheParameters,
        FRadianceCacheConfiguration Configuration,
        int32 MaxNumProbes,
        int32 MaxProbeTraceTileResolution,
        FRDGBufferRef ProbeTraceData,
        FRDGBufferRef ProbeTraceTileData,
        FRDGBufferRef ProbeTraceTileAllocator,
        FRDGBufferRef TraceProbesIndirectArgs,
        FRDGBufferRef HardwareRayTracingRayAllocatorBuffer,
        FRDGBufferRef RadianceCacheHardwareRayTracingIndirectArgs,
        FRDGTextureUAVRef RadianceProbeAtlasTextureUAV,
        FRDGTextureUAVRef DepthProbeTextureUAV,
        ERDGPassFlags ComputePassFlags);
};