OgreGLESHardwareBufferManager.h
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00001 /*
00002 -----------------------------------------------------------------------------
00003 This source file is part of OGRE
00004     (Object-oriented Graphics Rendering Engine)
00005 For the latest info, see http://www.ogre3d.org/
00006 
00007 Copyright (c) 2008 Renato Araujo Oliveira Filho <renatox@gmail.com>
00008 Copyright (c) 2000-2012 Torus Knot Software Ltd
00009 
00010 Permission is hereby granted, free of charge, to any person obtaining a copy
00011 of this software and associated documentation files (the "Software"), to deal
00012 in the Software without restriction, including without limitation the rights
00013 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
00014 copies of the Software, and to permit persons to whom the Software is
00015 furnished to do so, subject to the following conditions:
00016 
00017 The above copyright notice and this permission notice shall be included in
00018 all copies or substantial portions of the Software.
00019 
00020 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00021 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00022 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
00023 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
00024 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00025 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
00026 THE SOFTWARE.
00027 -----------------------------------------------------------------------------
00028 */
00029 
00030 #ifndef __GLESHardwareBufferManager_H__
00031 #define __GLESHardwareBufferManager_H__
00032 
00033 #include "OgreGLESPrerequisites.h"
00034 #include "OgreHardwareBufferManager.h"
00035 
00036 namespace Ogre {
00037     // Default threshold at which glMapBuffer becomes more efficient than glBufferSubData (32k?)
00038     #   define OGRE_GL_MAP_BUFFER_THRESHOLD (1024 * 32)
00039 
00041     class _OgreGLESExport GLESHardwareBufferManagerBase : public HardwareBufferManagerBase
00042     {
00043         protected:
00044             char* mScratchBufferPool;
00045             OGRE_MUTEX(mScratchMutex)
00046             size_t mMapBufferThreshold;
00047 
00048         public:
00049             GLESHardwareBufferManagerBase();
00050             virtual ~GLESHardwareBufferManagerBase();
00052             HardwareVertexBufferSharedPtr createVertexBuffer(size_t vertexSize,
00053                 size_t numVerts, HardwareBuffer::Usage usage, bool useShadowBuffer = false);
00055             HardwareIndexBufferSharedPtr createIndexBuffer(
00056                 HardwareIndexBuffer::IndexType itype, size_t numIndexes,
00057                 HardwareBuffer::Usage usage, bool useShadowBuffer = false);
00059             RenderToVertexBufferSharedPtr createRenderToVertexBuffer();
00060 
00062             static GLenum getGLUsage(unsigned int usage);
00063 
00065             static GLenum getGLType(unsigned int type);
00066 
00074             void* allocateScratch(uint32 size);
00075 
00077             void deallocateScratch(void* ptr);
00078 
00081             size_t getGLMapBufferThreshold() const;
00082             void setGLMapBufferThreshold( const size_t value );
00083     };
00084 
00086     class _OgreGLESExport GLESHardwareBufferManager : public HardwareBufferManager
00087     {
00088     public:
00089         GLESHardwareBufferManager()
00090             : HardwareBufferManager(OGRE_NEW GLESHardwareBufferManagerBase()) 
00091         {
00092 
00093         }
00094         ~GLESHardwareBufferManager()
00095         {
00096             OGRE_DELETE mImpl;
00097         }
00098 
00099 
00100 
00102         static GLenum getGLUsage(unsigned int usage) 
00103         { return GLESHardwareBufferManagerBase::getGLUsage(usage); }
00104 
00106         static GLenum getGLType(unsigned int type)
00107         { return GLESHardwareBufferManagerBase::getGLType(type); }
00108 
00116         void* allocateScratch(uint32 size)
00117         {
00118             return static_cast<GLESHardwareBufferManagerBase*>(mImpl)->allocateScratch(size);
00119         }
00120 
00122         void deallocateScratch(void* ptr)
00123         {
00124             static_cast<GLESHardwareBufferManagerBase*>(mImpl)->deallocateScratch(ptr);
00125         }
00128         size_t getGLMapBufferThreshold() const
00129         {
00130             return static_cast<GLESHardwareBufferManagerBase*>(mImpl)->getGLMapBufferThreshold();
00131         }
00132         void setGLMapBufferThreshold( const size_t value )
00133         {
00134             static_cast<GLESHardwareBufferManagerBase*>(mImpl)->setGLMapBufferThreshold(value);
00135         }
00136 
00137     };
00138 
00139 }
00140 
00141 #endif

Copyright © 2012 Torus Knot Software Ltd
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This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.
Last modified Sun Sep 2 2012 07:27:21