E:/Programming/MyProject/K_Game_hg/GameEngine/include/render/MemoryIndexBuffer.h

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// Copyright 2006-2011 by Kat'Oun

#ifndef _MEMORY_INDEX_BUFFER_H_
#define _MEMORY_INDEX_BUFFER_H_

#include <EngineConfig.h>
#include <core/Types.h>
#include <render/IndexBuffer.h>

namespace render
{

class ENGINE_PUBLIC_EXPORT MemoryIndexBuffer : public IndexBuffer
{
public:

        MemoryIndexBuffer(IndexType idxType, u32 numIndexes, resource::BufferUsage usage);

        virtual ~MemoryIndexBuffer();

        void* lock(u32 offset, u32 length, resource::BufferLocking options);

        void unlock();

        void readData(u32 offset, u32 length, void* pDest);

        void writeData(u32 offset, u32 length, const void* pSource, bool discardWholeBuffer = false);
        
protected:

        u8* mpData;

        void* lockImpl(u32 offset, u32 length, resource::BufferLocking options);

        void unlockImpl();
};

}// end namespace render

#endif// _MEMORYINDEXBUFFER_H_