OgreHardwareIndexBuffer.h

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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) 2000-2012 Torus Knot Software Ltd

Permission is hereby granted, free of charge, to any person obtaining a copy
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in the Software without restriction, including without limitation the rights
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copies of the Software, and to permit persons to whom the Software is
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The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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*/
#ifndef __HardwareIndexBuffer__
#define __HardwareIndexBuffer__

// Precompiler options
#include "OgrePrerequisites.h"
#include "OgreHardwareBuffer.h"
#include "OgreSharedPtr.h"

namespace Ogre {
    class HardwareBufferManagerBase;

    class _OgreExport HardwareIndexBuffer : public HardwareBuffer
    {
        public:
            enum IndexType {
                IT_16BIT,
                IT_32BIT
            };

        protected:
            HardwareBufferManagerBase* mMgr;
            IndexType mIndexType;
            size_t mNumIndexes;
            size_t mIndexSize;

        public:
            HardwareIndexBuffer(HardwareBufferManagerBase* mgr, IndexType idxType, size_t numIndexes, HardwareBuffer::Usage usage,
                bool useSystemMemory, bool useShadowBuffer);
            ~HardwareIndexBuffer();
            HardwareBufferManagerBase* getManager() const { return mMgr; }
            IndexType getType(void) const { return mIndexType; }
            size_t getNumIndexes(void) const { return mNumIndexes; }
            size_t getIndexSize(void) const { return mIndexSize; }

            // NB subclasses should override lock, unlock, readData, writeData
    };


    class _OgreExport HardwareIndexBufferSharedPtr : public SharedPtr<HardwareIndexBuffer>
    {
    public:
        HardwareIndexBufferSharedPtr() : SharedPtr<HardwareIndexBuffer>() {}
        explicit HardwareIndexBufferSharedPtr(HardwareIndexBuffer* buf);
    };
}
#endif