StaticMeshVertexDataInterface.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreTypes.h"
#include "Misc/EnumClassFlags.h"
 
class FArchive;
class FResourceArrayInterface;
 
enum class EResizeBufferFlags
{
    None =                                      0, // No flags
    AllowSlackOnGrow =                          1 << 0, // will allocate slack when growing the array.
    AllowSlackOnReduce=                         1 << 1, // will leave the slack when reducing the array.
};
ENUM_CLASS_FLAGS(EResizeBufferFlags);
 
class FStaticMeshVertexDataInterface
{
public:
 
    virtual ~FStaticMeshVertexDataInterface() {}
 
    virtual void ResizeBuffer(uint32 NumVertices, EResizeBufferFlags BufferFlags = EResizeBufferFlags::None) = 0;
 
 
    virtual void Empty(uint32 NumVertices) = 0;
 
    virtual bool IsValidIndex(uint32 Index) = 0;
 
    virtual uint32 GetStride() const = 0;
 
    virtual int32 Num() const = 0;
 
    virtual uint8* GetDataPointer() = 0;
 
    virtual FResourceArrayInterface* GetResourceArray() = 0;
 
    virtual void Serialize(FArchive& Ar, bool bForcePerElementSerialization = false) = 0;
 
    virtual void OverrideFreezeSizeAndAlignment(int64& Size, int32& Alignment) const = 0;
 
    virtual SIZE_T GetResourceSize() const = 0;
 
    virtual bool GetAllowCPUAccess() const = 0;
};