OgreGLES2DefaultHardwareBufferManager.h

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/*
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#ifndef __GLES2DefaultHardwareBufferManager_H__
#define __GLES2DefaultHardwareBufferManager_H__

#include "OgreGLES2Prerequisites.h"
#include "OgreHardwareBufferManager.h"
#include "OgreHardwareVertexBuffer.h"
#include "OgreHardwareUniformBuffer.h"
#include "OgreHardwareIndexBuffer.h"

namespace Ogre {
    class _OgreGLES2Export GLES2DefaultHardwareVertexBuffer : public HardwareVertexBuffer
    {
        protected:
            unsigned char* mData;
            void* lockImpl(size_t offset, size_t length, LockOptions options);
            void unlockImpl(void);

        public:
            GLES2DefaultHardwareVertexBuffer(size_t vertexSize, size_t numVertices,
                                          HardwareBuffer::Usage usage);
            GLES2DefaultHardwareVertexBuffer(HardwareBufferManagerBase* mgr, size_t vertexSize, size_t numVertices, 
                                          HardwareBuffer::Usage usage);
            virtual ~GLES2DefaultHardwareVertexBuffer();
            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* lock(size_t offset, size_t length, LockOptions options);
            void unlock(void);

            void* getDataPtr(size_t offset) const { return (void*)(mData + offset); }
    };

    class _OgreGLES2Export GLES2DefaultHardwareIndexBuffer : public HardwareIndexBuffer
    {
        protected:
            unsigned char* mData;
            void* lockImpl(size_t offset, size_t length, LockOptions options);
            void unlockImpl(void);

        public:
            GLES2DefaultHardwareIndexBuffer(IndexType idxType, size_t numIndexes, HardwareBuffer::Usage usage);
            virtual ~GLES2DefaultHardwareIndexBuffer();
            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* lock(size_t offset, size_t length, LockOptions options);
            void unlock(void);

            void* getDataPtr(size_t offset) const { return (void*)(mData + offset); }
    };

    class _OgreGLES2Export GLES2DefaultHardwareUniformBuffer : public HardwareUniformBuffer
    {
    protected:
        unsigned char* mData;
        void* lockImpl(size_t offset, size_t length, LockOptions options);
        void unlockImpl(void);

    public:
        GLES2DefaultHardwareUniformBuffer(size_t bufferSize, HardwareBuffer::Usage usage, bool useShadowBuffer, const String& name);
        GLES2DefaultHardwareUniformBuffer(HardwareBufferManagerBase* mgr, size_t bufferSize,
                                            HardwareBuffer::Usage usage, bool useShadowBuffer, const String& name);
        ~GLES2DefaultHardwareUniformBuffer();
        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* lock(size_t offset, size_t length, LockOptions options);
        void unlock(void);

        void* getDataPtr(size_t offset) const { return (void*)(mData + offset); }
    };

    class _OgreGLES2Export GLES2DefaultHardwareBufferManagerBase : public HardwareBufferManagerBase
    {
        public:
            GLES2DefaultHardwareBufferManagerBase();
            virtual ~GLES2DefaultHardwareBufferManagerBase();
            HardwareVertexBufferSharedPtr
                createVertexBuffer(size_t vertexSize, size_t numVerts,
                    HardwareBuffer::Usage usage, bool useShadowBuffer = false);
            HardwareIndexBufferSharedPtr
                createIndexBuffer(HardwareIndexBuffer::IndexType itype, size_t numIndexes,
                    HardwareBuffer::Usage usage, bool useShadowBuffer = false);
            RenderToVertexBufferSharedPtr createRenderToVertexBuffer(void);

        HardwareUniformBufferSharedPtr
            createUniformBuffer(size_t sizeBytes, HardwareBuffer::Usage usage,bool useShadowBuffer, const String& name = "");

        HardwareCounterBufferSharedPtr createCounterBuffer(size_t sizeBytes,
                                                           HardwareBuffer::Usage usage = HardwareBuffer::HBU_DYNAMIC_WRITE_ONLY_DISCARDABLE,
                                                           bool useShadowBuffer = false, const String& name = "")
        {
            OGRE_EXCEPT(Exception::ERR_RENDERINGAPI_ERROR,
                        "GLES2 does not support atomic counter buffers",
                        "GLES2DefaultHardwareBufferManagerBase::createCounterBuffer");
        }
    };

    class _OgreGLES2Export GLES2DefaultHardwareBufferManager : public HardwareBufferManager
    {
    public:
        GLES2DefaultHardwareBufferManager()
            : HardwareBufferManager(OGRE_NEW GLES2DefaultHardwareBufferManagerBase()) 
        {

        }
        ~GLES2DefaultHardwareBufferManager()
        {
            OGRE_DELETE mImpl;
        }
    };
}

#endif