SkeletalRenderStatic.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
/*=============================================================================
    SkeletalRenderStatic.h: Skinned mesh object rendered as static
=============================================================================*/
 
#pragma once
 
#include "CoreMinimal.h"
#include "ProfilingDebugging/ResourceSize.h"
#include "RenderResource.h"
#include "RayTracingGeometry.h"
#include "LocalVertexFactory.h"
#include "Components/SkinnedMeshComponent.h"
#include "SkeletalRenderPublic.h"
 
class FPrimitiveDrawInterface;
class UMorphTarget;
 
struct FSkinnedMeshSceneProxyDesc;
 
class FSkeletalMeshObjectStatic : public FSkeletalMeshObject
{
public:
    ENGINE_API FSkeletalMeshObjectStatic(const USkinnedMeshComponent* InMeshComponent, FSkeletalMeshRenderData* InSkelMeshRenderData, ERHIFeatureLevel::Type InFeatureLevel);
    ENGINE_API FSkeletalMeshObjectStatic(const FSkinnedMeshSceneProxyDesc& InMeshDesc, FSkeletalMeshRenderData* InSkelMeshRenderData, ERHIFeatureLevel::Type InFeatureLevel);
    ENGINE_API virtual ~FSkeletalMeshObjectStatic();
 
    //~ Begin FSkeletalMeshObject Interface
    ENGINE_API virtual void InitResources(const FSkinnedMeshSceneProxyDesc& InMeshDesc) override;
    ENGINE_API virtual void ReleaseResources() override;
    virtual void Update(int32 LODIndex, const FSkinnedMeshSceneProxyDynamicData& InSkeletalMeshDynamicData, const FPrimitiveSceneProxy* InSceneProxy, const USkinnedAsset* InSkinnedAsset, const FMorphTargetWeightMap& InActiveMorphTargets, const TArray<float>& MorphTargetWeights, EPreviousBoneTransformUpdateMode PreviousBoneTransformUpdateMode, const FExternalMorphWeightData& InExternalMorphWeightData) override {};
    //virtual void UpdateRecomputeTangent(int32 MaterialIndex, int32 LODIndex, bool bRecomputeTangent) override {};
    virtual void EnableOverlayRendering(bool bEnabled, const TArray<int32>* InBonesOfInterest, const TArray<UMorphTarget*>* InMorphTargetOfInterest) override {};
    virtual bool IsCPUSkinned() const override { return true; }
    ENGINE_API virtual const FVertexFactory* GetSkinVertexFactory(const FSceneView* View, int32 LODIndex, int32 ChunkIdx, ESkinVertexFactoryMode VFMode = ESkinVertexFactoryMode::Default) const override;
    ENGINE_API virtual const FVertexFactory* GetStaticSkinVertexFactory(int32 LODIndex, int32 ChunkIdx, ESkinVertexFactoryMode VFMode) const override;
    ENGINE_API virtual TArray<FTransform>* GetComponentSpaceTransforms() const override;
    ENGINE_API virtual TConstArrayView<FMatrix44f> GetReferenceToLocalMatrices() const override;
    virtual int32 GetLOD() const override;
    //virtual const FTwoVectors& GetCustomLeftRightVectors(int32 SectionIndex) const override;
    virtual void DrawVertexElements(FPrimitiveDrawInterface* PDI, const FMatrix& ToWorldSpace, bool bDrawNormals, bool bDrawTangents, bool bDrawBinormals) const override {};
    virtual bool HaveValidDynamicData() const override
    { 
        return false; 
    }
 
    virtual void GetResourceSizeEx(FResourceSizeEx& CumulativeResourceSize) override
    {
        CumulativeResourceSize.AddDedicatedSystemMemoryBytes(sizeof(*this));
        CumulativeResourceSize.AddDedicatedSystemMemoryBytes(LODs.GetAllocatedSize()); 
        // include extra data from LOD
        for (int32 I=0; I<LODs.Num(); ++I)
        {
            LODs[I].GetResourceSizeEx(CumulativeResourceSize);
        }
    }
    virtual void UpdateSkinWeightBuffer(const TArrayView<const FSkelMeshComponentLODInfo> InLODInfo) override {}
 
    //~ End FSkeletalMeshObject Interface
 
private:
    struct FSkeletalMeshObjectLOD
    {
        FSkeletalMeshRenderData* SkelMeshRenderData;
        // index into FSkeletalMeshResource::LODModels[]
        int32 LODIndex;
        FLocalVertexFactory VertexFactory;
 
        FColorVertexBuffer* ColorVertexBuffer;
 
        bool bStaticRayTracingGeometryInitialized;
 
        bool bResourcesInitialized;
 
        FSkeletalMeshObjectLOD(ERHIFeatureLevel::Type InFeatureLevel, FSkeletalMeshRenderData* InSkelMeshRenderData, int32 InLOD)
            :   SkelMeshRenderData(InSkelMeshRenderData)
            ,   LODIndex(InLOD)
            ,   VertexFactory(InFeatureLevel, "FSkeletalMeshObjectStatic::FSkeletalMeshObjectLOD")
            ,   ColorVertexBuffer(nullptr)
            ,   bStaticRayTracingGeometryInitialized(false)
            ,   bResourcesInitialized(false)
        {
        }
 
        void InitResources(const FSkelMeshComponentLODInfo* CompLODInfo);
        void ReleaseResources();
 
        void GetResourceSizeEx(FResourceSizeEx& CumulativeResourceSize)
        {
            CumulativeResourceSize.AddDedicatedSystemMemoryBytes(sizeof(*this));
        }
    };
 
    TArray<FSkeletalMeshObjectLOD> LODs;
};