Crazy Eddie's GUI System  0.8.4
ApplePBTextureTarget.h
00001 /***********************************************************************
00002     created:    Sun Feb 1 2009
00003     author:     Paul D Turner
00004 *************************************************************************/
00005 /***************************************************************************
00006  *   Copyright (C) 2004 - 2011 Paul D Turner & The CEGUI Development Team
00007  *
00008  *   Permission is hereby granted, free of charge, to any person obtaining
00009  *   a copy of this software and associated documentation files (the
00010  *   "Software"), to deal in the Software without restriction, including
00011  *   without limitation the rights to use, copy, modify, merge, publish,
00012  *   distribute, sublicense, and/or sell copies of the Software, and to
00013  *   permit persons to whom the Software is furnished to do so, subject to
00014  *   the following conditions:
00015  *
00016  *   The above copyright notice and this permission notice shall be
00017  *   included in all copies or substantial portions of the Software.
00018  *
00019  *   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
00020  *   EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
00021  *   MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
00022  *   IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
00023  *   OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
00024  *   ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
00025  *   OTHER DEALINGS IN THE SOFTWARE.
00026  ***************************************************************************/
00027 #ifndef _CEGUIOpenGLApplePBTextureTarget_h_
00028 #define _CEGUIOpenGLApplePBTextureTarget_h_
00029 
00030 #include <OpenGL/OpenGL.h>
00031 #include "CEGUI/RendererModules/OpenGL/TextureTarget.h"
00032 
00033 // Start of CEGUI namespace section
00034 namespace CEGUI
00035 {
00036 class OpenGLTexture;
00037 
00043 class OpenGLApplePBTextureTarget : public OpenGLTextureTarget
00044 {
00045 public:
00046     OpenGLApplePBTextureTarget(OpenGLRendererBase& owner);
00047     virtual ~OpenGLApplePBTextureTarget();
00048 
00049     // overrides from OpenGLRenderTarget
00050     void activate();
00051     void deactivate();
00052     // implementation of TextureTarget interface
00053     void clear();
00054     void declareRenderSize(const Sizef& sz);
00055     // specialise functions from OpenGLTextureTarget
00056     void grabTexture();
00057     void restoreTexture();
00058 
00059 protected:
00061     static const float DEFAULT_SIZE;
00062 
00064     void initialiseTexture();
00065 
00067     void enablePBuffer() const;
00068 
00070     void disablePBuffer() const;
00071 
00073     CGLPBufferObj d_pbuffer;
00075     CGLContextObj d_context;
00077     GLint d_screen;
00079     mutable CGLContextObj d_prevContext;
00080 };
00081 
00082 } // End of  CEGUI namespace section
00083 
00084 #endif  // end of guard _CEGUIOpenGLApplePBTextureTarget_h_
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