OgreGL3PlusDefaultHardwareBufferManager.h

Go to the documentation of this file.

/*
-----------------------------------------------------------------------------
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

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

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
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
-----------------------------------------------------------------------------
*/

#ifndef __GL3PlusDefaultHardwareBufferManager_H__
#define __GL3PlusDefaultHardwareBufferManager_H__

#include "OgreGL3PlusPrerequisites.h"
#include "OgreHardwareBufferManager.h"
#include "OgreHardwareCounterBuffer.h"
#include "OgreHardwareIndexBuffer.h"
#include "OgreHardwareUniformBuffer.h"
#include "OgreHardwareVertexBuffer.h"

namespace Ogre {
    class _OgreGL3PlusExport GL3PlusDefaultHardwareVertexBuffer : public HardwareVertexBuffer
    {
        protected:
            unsigned char* mData;
            void* lockImpl(size_t offset, size_t length, LockOptions options);
            void unlockImpl(void);

        public:
            GL3PlusDefaultHardwareVertexBuffer(size_t vertexSize, size_t numVertices,
                                          HardwareBuffer::Usage usage);
            GL3PlusDefaultHardwareVertexBuffer(HardwareBufferManagerBase* mgr, size_t vertexSize, size_t numVertices, 
                                          HardwareBuffer::Usage usage);
            ~GL3PlusDefaultHardwareVertexBuffer();
            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 _OgreGL3PlusExport GL3PlusDefaultHardwareIndexBuffer : public HardwareIndexBuffer
    {
        protected:
            unsigned char* mData;
            void* lockImpl(size_t offset, size_t length, LockOptions options);
            void unlockImpl(void);
        public:
            GL3PlusDefaultHardwareIndexBuffer(IndexType idxType, size_t numIndexes, HardwareBuffer::Usage usage);
            ~GL3PlusDefaultHardwareIndexBuffer();
            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 _OgreGL3PlusExport GL3PlusDefaultHardwareUniformBuffer : public HardwareUniformBuffer
    {
    protected:
        unsigned char* mData;
        void* lockImpl(size_t offset, size_t length, LockOptions options);
        void unlockImpl(void);
        
    public:
        GL3PlusDefaultHardwareUniformBuffer(size_t bufferSize, HardwareBuffer::Usage usage, bool useShadowBuffer, const String& name);
        GL3PlusDefaultHardwareUniformBuffer(HardwareBufferManagerBase* mgr, size_t bufferSize,
                                           HardwareBuffer::Usage usage, bool useShadowBuffer, const String& name);
        ~GL3PlusDefaultHardwareUniformBuffer();
        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 _OgreGL3PlusExport GL3PlusDefaultHardwareCounterBuffer : public HardwareCounterBuffer
    {
    protected:
        unsigned char* mData;
        void* lockImpl(size_t offset, size_t length, LockOptions options);
        void unlockImpl(void);

    public:
        GL3PlusDefaultHardwareCounterBuffer(const String& name);
        GL3PlusDefaultHardwareCounterBuffer(HardwareBufferManagerBase* mgr, const String& name);
        ~GL3PlusDefaultHardwareCounterBuffer();
        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 _OgreGL3PlusExport GL3PlusDefaultHardwareBufferManagerBase : public HardwareBufferManagerBase
    {
        public:
            GL3PlusDefaultHardwareBufferManagerBase();
            ~GL3PlusDefaultHardwareBufferManagerBase();
            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);
            HardwareUniformBufferSharedPtr
                createUniformBuffer(size_t sizeBytes, HardwareBuffer::Usage usage, bool useShadowBuffer, const String& name = "");
            HardwareCounterBufferSharedPtr
                createCounterBuffer(size_t sizeBytes, HardwareBuffer::Usage usage, bool useShadowBuffer, const String& name = "");
            RenderToVertexBufferSharedPtr createRenderToVertexBuffer(void);
    };

    class _OgreGL3PlusExport GL3PlusDefaultHardwareBufferManager : public HardwareBufferManager
    {
    public:
        GL3PlusDefaultHardwareBufferManager()
            : HardwareBufferManager(OGRE_NEW GL3PlusDefaultHardwareBufferManagerBase()) 
        {

        }
        ~GL3PlusDefaultHardwareBufferManager()
        {
            OGRE_DELETE mImpl;
        }
    };
}

#endif