OgreGL3PlusHardwareCounterBuffer.h

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/*
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#ifndef __GL3PlusHARDWARECOUNTERBUFFER_H__
#define __GL3PlusHARDWARECOUNTERBUFFER_H__

#include "OgreGL3PlusPrerequisites.h"
#include "OgreHardwareCounterBuffer.h"

namespace Ogre {

    class _OgreGL3PlusExport GL3PlusHardwareCounterBuffer : public HardwareCounterBuffer
    {
        private:
            GLuint mBufferId;
            GLint mBinding;

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

        public:
            GL3PlusHardwareCounterBuffer(HardwareBufferManagerBase* mgr, const String& name);
            ~GL3PlusHardwareCounterBuffer();

            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);

            inline GLuint getGLBufferId(void) const { return mBufferId; }
            void setGLBufferBinding(GLint binding);
            inline GLint getGLBufferBinding(void) const { return mBinding; }
    };
}
#endif // __GL3PlusHARDWARECounterBUFFER_H__