SkeletalMeshVertexClothBuffer.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "RenderResource.h"
#include "SkeletalMeshTypes.h"
 
class FSkeletalMeshVertexDataInterface;
 
class FSkeletalMeshVertexClothBuffer : public FVertexBuffer
{
public:
    ENGINE_API FSkeletalMeshVertexClothBuffer();
 
    ENGINE_API virtual ~FSkeletalMeshVertexClothBuffer();
 
    ENGINE_API FSkeletalMeshVertexClothBuffer& operator=(const FSkeletalMeshVertexClothBuffer& Other);
 
    ENGINE_API FSkeletalMeshVertexClothBuffer(const FSkeletalMeshVertexClothBuffer& Other);
 
    void CleanUp();
 
    void ClearMetaData();
 
    ENGINE_API void Init(const TArray<FMeshToMeshVertData>& InMappingData, const TArray<FClothBufferIndexMapping>& InClothIndexMapping);
 
 
    ENGINE_API friend FArchive& operator<<(FArchive& Ar, FSkeletalMeshVertexClothBuffer& VertexBuffer);
 
    void SerializeMetaData(FArchive& Ar);
 
    //~ Begin FRenderResource interface.
 
    virtual void InitRHI(FRHICommandListBase& RHICmdList) override;
 
    virtual void ReleaseRHI() override;
 
    virtual FString GetFriendlyName() const override;
 
    //~ End FRenderResource interface.
 
    //~ Vertex data accessors.
 
    inline FMeshToMeshVertData& MappingData(uint32 VertexIndex)
    {
        checkSlow(VertexIndex < GetNumVertices());
        return *((FMeshToMeshVertData*)(Data + VertexIndex * Stride));
    }
    inline const FMeshToMeshVertData& MappingData(uint32 VertexIndex) const
    {
        checkSlow(VertexIndex < GetNumVertices());
        return *((FMeshToMeshVertData*)(Data + VertexIndex * Stride));
    }
 
    inline uint32 GetNumVertices() const
    {
        return NumVertices;
    }
 
    inline uint32 GetStride() const
    {
        return Stride;
    }
    inline uint32 GetVertexDataSize() const
    {
        return NumVertices * Stride;
    }
 
    inline FShaderResourceViewRHIRef GetSRV() const
    {
        return VertexBufferSRV;
    }
 
    inline const TArray<FClothBufferIndexMapping>& GetClothIndexMapping() const
    {
        return ClothIndexMapping;
    }
 
    FBufferRHIRef CreateRHIBuffer(FRHICommandListBase& RHICmdList);
 
    void InitRHIForStreaming(FRHIBuffer* IntermediateBuffer, FRHIResourceReplaceBatcher& Batcher);
    void ReleaseRHIForStreaming(FRHIResourceReplaceBatcher& Batcher);
 
    ENGINE_API void SetMetadata(const TArray<FClothBufferIndexMapping>& ClothIndexMapping, uint32 Stride, uint32 NumVertices);
    
private:
    FShaderResourceViewRHIRef VertexBufferSRV;
 
    TArray<FClothBufferIndexMapping> ClothIndexMapping;
 
    FSkeletalMeshVertexDataInterface* VertexData;
    uint8* Data;
    uint32 Stride;
    uint32 NumVertices;
 
    void AllocateData();
};