libogre-1.9-dev 1.9.0+dfsg1-7+b4 / usr / include / OGRE / OgreDefaultHardwareBufferManager.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) 2000-2013 Torus Knot Software Ltd

Permission is hereby granted, free of charge, to any person obtaining a copy
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The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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THE SOFTWARE.
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*/

#ifndef __DefaultHardwareBufferManager_H__
#define __DefaultHardwareBufferManager_H__

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

namespace Ogre {
	/** \addtogroup Core
	*  @{
	*/
	/** \addtogroup RenderSystem
	*  @{
	*/

    /// Specialisation of HardwareVertexBuffer for emulation
    class _OgreExport DefaultHardwareVertexBuffer : public HardwareVertexBuffer 
    {
	protected:
		unsigned char* mData;
        /** See HardwareBuffer. */
        void* lockImpl(size_t offset, size_t length, LockOptions options);
        /** See HardwareBuffer. */
		void unlockImpl(void);
    public:
		DefaultHardwareVertexBuffer(size_t vertexSize, size_t numVertices, HardwareBuffer::Usage usage);
		DefaultHardwareVertexBuffer(HardwareBufferManagerBase* mgr, size_t vertexSize, size_t numVertices, 
            HardwareBuffer::Usage usage);
        ~DefaultHardwareVertexBuffer();
        /** See HardwareBuffer. */
        void readData(size_t offset, size_t length, void* pDest);
        /** See HardwareBuffer. */
        void writeData(size_t offset, size_t length, const void* pSource,
				bool discardWholeBuffer = false);
        /** Override HardwareBuffer to turn off all shadowing. */
        void* lock(size_t offset, size_t length, LockOptions options);
        /** Override HardwareBuffer to turn off all shadowing. */
		void unlock(void);


    };

	/// Specialisation of HardwareIndexBuffer for emulation
    class _OgreExport DefaultHardwareIndexBuffer : public HardwareIndexBuffer
    {
	protected:
		unsigned char* mData;
        /** See HardwareBuffer. */
        void* lockImpl(size_t offset, size_t length, LockOptions options);
        /** See HardwareBuffer. */
		void unlockImpl(void);
    public:
		DefaultHardwareIndexBuffer(IndexType idxType, size_t numIndexes, HardwareBuffer::Usage usage);
        ~DefaultHardwareIndexBuffer();
        /** See HardwareBuffer. */
        void readData(size_t offset, size_t length, void* pDest);
        /** See HardwareBuffer. */
        void writeData(size_t offset, size_t length, const void* pSource,
				bool discardWholeBuffer = false);
        /** Override HardwareBuffer to turn off all shadowing. */
        void* lock(size_t offset, size_t length, LockOptions options);
        /** Override HardwareBuffer to turn off all shadowing. */
		void unlock(void);

    };

	/// Specialisation of HardwareUniformBuffer for emulation
	class _OgreExport DefaultHardwareUniformBuffer : public HardwareUniformBuffer
	{
	protected:
		unsigned char* mData;
		/** See HardwareBuffer. */
        void* lockImpl(size_t offset, size_t length, LockOptions options);
        /** See HardwareBuffer. */
		void unlockImpl(void);
		/**  */
		//bool updateStructure(const Any& renderSystemInfo);

	public:
		DefaultHardwareUniformBuffer(HardwareBufferManagerBase* mgr, size_t sizeBytes, HardwareBuffer::Usage usage, bool useShadowBuffer = false, const String& name = "");
		~DefaultHardwareUniformBuffer();
		/** See HardwareBuffer. */
        void readData(size_t offset, size_t length, void* pDest);
        /** See HardwareBuffer. */
        void writeData(size_t offset, size_t length, const void* pSource,
				bool discardWholeBuffer = false);
        /** Override HardwareBuffer to turn off all shadowing. */
        void* lock(size_t offset, size_t length, LockOptions options);
        /** Override HardwareBuffer to turn off all shadowing. */
		void unlock(void);
	};

    /// Specialisation of HardwareCounterBuffer for emulation
	class _OgreExport DefaultHardwareCounterBuffer : public HardwareCounterBuffer
	{
	protected:
		unsigned char* mData;
		/** See HardwareBuffer. */
        void* lockImpl(size_t offset, size_t length, LockOptions options);
        /** See HardwareBuffer. */
		void unlockImpl(void);
		/**  */
		//bool updateStructure(const Any& renderSystemInfo);

	public:
		DefaultHardwareCounterBuffer(HardwareBufferManagerBase* mgr, size_t sizeBytes, HardwareBuffer::Usage usage, bool useShadowBuffer = false, const String& name = "");
		~DefaultHardwareCounterBuffer();
		/** See HardwareBuffer. */
        void readData(size_t offset, size_t length, void* pDest);
        /** See HardwareBuffer. */
        void writeData(size_t offset, size_t length, const void* pSource,
                       bool discardWholeBuffer = false);
        /** Override HardwareBuffer to turn off all shadowing. */
        void* lock(size_t offset, size_t length, LockOptions options);
        /** Override HardwareBuffer to turn off all shadowing. */
		void unlock(void);
	};

	/** Specialisation of HardwareBufferManagerBase to emulate hardware buffers.
	@remarks
		You might want to instantiate this class if you want to utilise
		classes like MeshSerializer without having initialised the 
		rendering system (which is required to create a 'real' hardware
		buffer manager).
	*/
	class _OgreExport DefaultHardwareBufferManagerBase : public HardwareBufferManagerBase
	{
    public:
        DefaultHardwareBufferManagerBase();
        ~DefaultHardwareBufferManagerBase();
        /// Creates a vertex buffer
		HardwareVertexBufferSharedPtr 
            createVertexBuffer(size_t vertexSize, size_t numVerts, 
				HardwareBuffer::Usage usage, bool useShadowBuffer = false);
		/// Create a hardware index buffer
		HardwareIndexBufferSharedPtr 
            createIndexBuffer(HardwareIndexBuffer::IndexType itype, size_t numIndexes, 
				HardwareBuffer::Usage usage, bool useShadowBuffer = false);
		/// Create a hardware vertex buffer
		RenderToVertexBufferSharedPtr createRenderToVertexBuffer();
		/// Create a hardware uniform buffer
		HardwareUniformBufferSharedPtr createUniformBuffer(size_t sizeBytes, 
									HardwareBuffer::Usage usage = HardwareBuffer::HBU_DYNAMIC_WRITE_ONLY_DISCARDABLE, 
									bool useShadowBuffer = false, const String& name = "");
		/// Create a hardware counter buffer
		HardwareCounterBufferSharedPtr createCounterBuffer(size_t sizeBytes,
                                                           HardwareBuffer::Usage usage = HardwareBuffer::HBU_DYNAMIC_WRITE_ONLY_DISCARDABLE,
                                                           bool useShadowBuffer = false, const String& name = "");
    };

	/// DefaultHardwareBufferManager as a Singleton
	class _OgreExport DefaultHardwareBufferManager : public HardwareBufferManager
	{
	public:
		DefaultHardwareBufferManager()
			: HardwareBufferManager(OGRE_NEW DefaultHardwareBufferManagerBase()) 
		{

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

	/** @} */
	/** @} */

}

#endif