Crazy Eddies GUI System 0.7.6
CEGUIOpenGLApplePBTextureTarget.h
00001 /***********************************************************************
00002     filename:   CEGUIOpenGLApplePBTextureTarget.h
00003     created:    Sun Feb 1 2009
00004     author:     Paul D Turner
00005 *************************************************************************/
00006 /***************************************************************************
00007  *   Copyright (C) 2004 - 2009 Paul D Turner & The CEGUI Development Team
00008  *
00009  *   Permission is hereby granted, free of charge, to any person obtaining
00010  *   a copy of this software and associated documentation files (the
00011  *   "Software"), to deal in the Software without restriction, including
00012  *   without limitation the rights to use, copy, modify, merge, publish,
00013  *   distribute, sublicense, and/or sell copies of the Software, and to
00014  *   permit persons to whom the Software is furnished to do so, subject to
00015  *   the following conditions:
00016  *
00017  *   The above copyright notice and this permission notice shall be
00018  *   included in all copies or substantial portions of the Software.
00019  *
00020  *   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
00021  *   EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
00022  *   MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
00023  *   IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
00024  *   OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
00025  *   ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
00026  *   OTHER DEALINGS IN THE SOFTWARE.
00027  ***************************************************************************/
00028 #ifndef _CEGUIOpenGLApplePBTextureTarget_h_
00029 #define _CEGUIOpenGLApplePBTextureTarget_h_
00030 
00031 #include <OpenGL/OpenGL.h>
00032 #include "CEGUIOpenGLTextureTarget.h"
00033 #include "../../CEGUIRect.h"
00034 
00035 // Start of CEGUI namespace section
00036 namespace CEGUI
00037 {
00038 class OpenGLTexture;
00039 
00045 class OpenGLApplePBTextureTarget : public OpenGLTextureTarget
00046 {
00047 public:
00048     OpenGLApplePBTextureTarget(OpenGLRenderer& owner);
00049     virtual ~OpenGLApplePBTextureTarget();
00050 
00051     // overrides from OpenGLRenderTarget
00052     void activate();
00053     void deactivate();
00054     // implementation of TextureTarget interface
00055     void clear();
00056     void declareRenderSize(const Size& sz);
00057     // specialise functions from OpenGLTextureTarget
00058     void grabTexture();
00059     void restoreTexture();
00060 
00061 protected:
00063     static const float DEFAULT_SIZE;
00064 
00066     void initialiseTexture();
00067 
00069     void enablePBuffer() const;
00070 
00072     void disablePBuffer() const;
00073 
00075     CGLPBufferObj d_pbuffer;
00077     CGLContextObj d_context;
00079     GLint d_screen;
00081     mutable CGLContextObj d_prevContext;
00082 };
00083 
00084 } // End of  CEGUI namespace section
00085 
00086 #endif  // end of guard _CEGUIOpenGLApplePBTextureTarget_h_