OgreD3D11HardwareBuffer.h

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/*
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This source file is part of OGRE
(Object-oriented Graphics Rendering Engine)
For the latest info, see http://www.ogre3d.org/

Copyright (c) 2000-2013 Torus Knot Software Ltd

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*/
#ifndef __D3D11HARDWAREBUFFER_H__
#define __D3D11HARDWAREBUFFER_H__

#include "OgreD3D11Prerequisites.h"
#include "OgreHardwareBuffer.h"

namespace Ogre { 


    class D3D11HardwareBuffer : public HardwareBuffer
    {
    public:
        enum BufferType
        {
            VERTEX_BUFFER,
            INDEX_BUFFER,
            CONSTANT_BUFFER
        };
    protected:
        ID3D11Buffer* mlpD3DBuffer;
        bool mUseTempStagingBuffer;
        D3D11HardwareBuffer* mpTempStagingBuffer;
        bool mStagingUploadNeeded;
        BufferType mBufferType;
        D3D11Device & mDevice;
        D3D11_BUFFER_DESC mDesc;



        void* lockImpl(size_t offset, size_t length, LockOptions options);
        void unlockImpl(void);

    public:
        D3D11HardwareBuffer(BufferType btype, size_t sizeBytes, HardwareBuffer::Usage usage, 
            D3D11Device & device, bool useSystemMem, bool useShadowBuffer, bool streamOut);
        ~D3D11HardwareBuffer();
        void readData(size_t offset, size_t length, void* pDest);
        void writeData(size_t offset, size_t length, const void* pSource,
            bool discardWholeBuffer = false);
        void copyData(HardwareBuffer& srcBuffer, size_t srcOffset, 
            size_t dstOffset, size_t length, bool discardWholeBuffer = false);

        ID3D11Buffer* getD3DBuffer(void) { return mlpD3DBuffer; }
    };


}



#endif