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