NaniteShading.h

Go to the documentation of this file.

// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "NaniteShared.h"
#include "NaniteSceneProxy.h"
 
#include "SceneRendering.h"
#include "Stats/Stats.h"
 
struct FNaniteShadingCommands;
class  FLumenCardPassUniformParameters;
class  FCardPageRenderData;
class  FSceneRenderer;
 
namespace Nanite
{
 
struct FRasterResults;
struct FRasterContext;
 
struct FShadeBinning
{
    FRDGBufferRef ShadingBinData  = nullptr;
    FRDGBufferRef ShadingBinArgs  = nullptr;
    FRDGBufferRef ShadingBinStats = nullptr;
 
    FRDGTextureRef FastClearVisualize = nullptr;
 
    uint32 DataByteOffset = 0u;
};
 
FShadeBinning ShadeBinning(
    FRDGBuilder& GraphBuilder,
    const FScene& Scene,
    const FViewInfo& View,
    const FIntRect InViewRect,
    const FNaniteShadingCommands& ShadingCommands,
    const FRasterResults& RasterResults,
    const TConstArrayView<FRDGTextureRef> ClearTargets
);
 
enum class EBuildShadingCommandsMode : uint8
{
    Default = 0,
    Custom,
};
 
void BuildShadingCommands(
    FRDGBuilder& GraphBuilder,
    FScene& Scene,
    ENaniteMeshPass::Type MeshPass,
    FNaniteShadingCommands& ShadingCommands,
    EBuildShadingCommandsMode Mode = EBuildShadingCommandsMode::Default
);
 
bool LoadBasePassPipeline(
    const FScene& Scene,
    FSceneProxyBase* SceneProxy,
    FSceneProxyBase::FMaterialSection& Section,
    bool bVoxel,
    FNaniteShadingPipeline& ShadingPipeline
);
 
bool LoadLumenCardPipeline(
    const FScene& Scene,
    FSceneProxyBase* SceneProxy,
    FSceneProxyBase::FMaterialSection& Section,
    FNaniteShadingPipeline& ShadingPipeline
);
 
void DispatchBasePass(
    FRDGBuilder& GraphBuilder,
    FNaniteShadingCommands& ShadingCommands,
    const FSceneRenderer& SceneRenderer,
    const FSceneTextures& SceneTextures,
    const FRenderTargetBindingSlots& BasePassRenderTargets,
    const FDBufferTextures& DBufferTextures,
    const FScene& Scene,
    const FViewInfo& View,
    const uint32 ViewIndex,
    const FRasterResults& RasterResults
);
 
void CollectBasePassShadingPSOInitializers(
    const FSceneTexturesConfig& SceneTexturesConfig,
    const FPSOPrecacheVertexFactoryData& VertexFactoryData,
    const FMaterial& Material,
    const FPSOPrecacheParams& PreCacheParams,
    ERHIFeatureLevel::Type FeatureLevel,
    EShaderPlatform ShaderPlatform,
    int32 PSOCollectorIndex,
    TArray<FPSOPrecacheData>& PSOInitializers
);
 
void CollectLumenCardPSOInitializers(
    const FSceneTexturesConfig& SceneTexturesConfig,
    const FPSOPrecacheVertexFactoryData& VertexFactoryData,
    const FMaterial& Material,
    const FPSOPrecacheParams& PreCacheParams,
    ERHIFeatureLevel::Type FeatureLevel,
    EShaderPlatform ShaderPlatform,
    int32 PSOCollectorIndex,
    TArray<FPSOPrecacheData>& PSOInitializers
);
 
extern bool HasNoDerivativeOps(FRHIComputeShader* ComputeShaderRHI);
extern uint32 PackMaterialBitFlags(const FMaterial& Material, uint32 BoundTargetMask, bool bNoDerivativeOps, bool bVoxel);
 
} // Nanite
 
void DispatchLumenMeshCapturePass(
    FRDGBuilder& GraphBuilder,
    FScene& Scene,
    FViewInfo* SharedView,
    TArrayView<const FCardPageRenderData> CardPagesToRender,
    const Nanite::FRasterResults& RasterResults,
    const Nanite::FRasterContext& RasterContext,
    FLumenCardPassUniformParameters* PassUniformParameters,
    FRDGBufferSRVRef RectMinMaxBufferSRV,
    uint32 NumRects,
    FIntPoint ViewportSize,
    FRDGTextureRef AlbedoAtlasTexture,
    FRDGTextureRef NormalAtlasTexture,
    FRDGTextureRef EmissiveAtlasTexture,
    FRDGTextureRef DepthAtlasTexture
);