OgreGLES2HardwareBufferManager.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) 2000-2012 Torus Knot Software Ltd
00008 
00009 Permission is hereby granted, free of charge, to any person obtaining a copy
00010 of this software and associated documentation files (the "Software"), to deal
00011 in the Software without restriction, including without limitation the rights
00012 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
00013 copies of the Software, and to permit persons to whom the Software is
00014 furnished to do so, subject to the following conditions:
00015 
00016 The above copyright notice and this permission notice shall be included in
00017 all copies or substantial portions of the Software.
00018 
00019 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00020 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00021 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
00022 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
00023 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00024 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
00025 THE SOFTWARE.
00026 -----------------------------------------------------------------------------
00027 */
00028 
00029 #ifndef __GLES2HardwareBufferManager_H__
00030 #define __GLES2HardwareBufferManager_H__
00031 
00032 #include "OgreGLES2Prerequisites.h"
00033 #include "OgreHardwareBufferManager.h"
00034 
00035 namespace Ogre {
00036     // Default threshold at which glMapBuffer becomes more efficient than glBufferSubData (32k?)
00037     #   define OGRE_GL_DEFAULT_MAP_BUFFER_THRESHOLD (1024 * 32)
00038 
00040     class _OgreGLES2Export GLES2HardwareBufferManagerBase : public HardwareBufferManagerBase
00041     {
00042         protected:
00043             char* mScratchBufferPool;
00044             OGRE_MUTEX(mScratchMutex)
00045             size_t mMapBufferThreshold;
00046 
00047         public:
00048             GLES2HardwareBufferManagerBase();
00049             virtual ~GLES2HardwareBufferManagerBase();
00051             HardwareVertexBufferSharedPtr createVertexBuffer(size_t vertexSize,
00052                 size_t numVerts, HardwareBuffer::Usage usage, bool useShadowBuffer = false);
00054             HardwareIndexBufferSharedPtr createIndexBuffer(
00055                 HardwareIndexBuffer::IndexType itype, size_t numIndexes,
00056                 HardwareBuffer::Usage usage, bool useShadowBuffer = false);
00058             RenderToVertexBufferSharedPtr createRenderToVertexBuffer();
00059 
00061             static GLenum getGLUsage(unsigned int usage);
00062 
00064             static GLenum getGLType(unsigned int type);
00065 
00073             void* allocateScratch(uint32 size);
00074 
00076             void deallocateScratch(void* ptr);
00077 
00080             size_t getGLMapBufferThreshold() const;
00081             void setGLMapBufferThreshold( const size_t value );
00082     };
00083 
00085     class _OgreGLES2Export GLES2HardwareBufferManager : public HardwareBufferManager
00086     {
00087     public:
00088         GLES2HardwareBufferManager()
00089             : HardwareBufferManager(OGRE_NEW GLES2HardwareBufferManagerBase()) 
00090         {
00091 
00092         }
00093         ~GLES2HardwareBufferManager()
00094         {
00095             OGRE_DELETE mImpl;
00096         }
00097 
00099         static GLenum getGLUsage(unsigned int usage) 
00100             { return GLES2HardwareBufferManagerBase::getGLUsage(usage); }
00101 
00103         static GLenum getGLType(unsigned int type)
00104             { return GLES2HardwareBufferManagerBase::getGLType(type); }
00105 
00113         void* allocateScratch(uint32 size)
00114         {
00115             return static_cast<GLES2HardwareBufferManagerBase*>(mImpl)->allocateScratch(size);
00116         }
00117 
00119         void deallocateScratch(void* ptr)
00120         {
00121             static_cast<GLES2HardwareBufferManagerBase*>(mImpl)->deallocateScratch(ptr);
00122         }
00123 
00126         size_t getGLMapBufferThreshold() const
00127         {
00128             return static_cast<GLES2HardwareBufferManagerBase*>(mImpl)->getGLMapBufferThreshold();
00129         }
00130         void setGLMapBufferThreshold( const size_t value )
00131         {
00132             static_cast<GLES2HardwareBufferManagerBase*>(mImpl)->setGLMapBufferThreshold(value);
00133         }
00134 
00135     };
00136 
00137 }
00138 
00139 #endif

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