SkeletalMeshAttributeVertexBuffer.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
 
#include "GPUSkinVertexFactory.h"
#include "SkeletalMeshVertexBuffer.h"
 
 
class FSkeletalMeshAttributeVertexBuffer :
    public FRenderResource
{
public:
    virtual ~FSkeletalMeshAttributeVertexBuffer() override;
    
    void Init(
        const EPixelFormat InPixelFormat,
        const int32 InNumVertices,
        const int32 InComponentCount,
        TConstArrayView<float> InValues
        );
 
    FRHIShaderResourceView* GetSRV() const
    {
        return ValueBuffer.VertexBufferSRV;
    }
 
    int32 GetResourceSize() const;
    void CleanUp();
 
    virtual void InitRHI(FRHICommandListBase& RHICmdList) override;
    virtual void ReleaseRHI() override;
    virtual FString GetFriendlyName() const override { return TEXT("SkeletalMeshAttributeVertexBuffer"); }
 
    friend FArchive& operator<<(FArchive& Ar, FSkeletalMeshAttributeVertexBuffer& Data)
    {
        Data.Serialize(Ar);
        return Ar;
    }
 
    void Serialize(FArchive& Ar);
 
    struct FCPUData
    {
        FSkeletalMeshVertexDataInterface* Data = nullptr;
        int32 PixelFormat = PF_Unknown;
    };
 
    FCPUData GetCPUData() const
    {
        FCPUData Out;
        Out.Data = ValueData;
        Out.PixelFormat = PixelFormat;
        return Out;
    }
    
private:
    void Allocate();
    void SetData(TConstArrayView<float> InValues);
    
    FVertexBufferAndSRV ValueBuffer;
    FSkeletalMeshVertexDataInterface *ValueData = nullptr;
 
    int32 ComponentCount = 0;
    int32 PixelFormat = PF_Unknown;
    int32 ComponentStride = 0;
};