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CEGUIOpenGLWGLPBTextureTarget.h

00001 /***********************************************************************
00002     filename:   CEGUIOpenGLWGLPBTextureTarget.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 _CEGUIOpenGLWGLPBTextureTarget_h_
00029 #define _CEGUIOpenGLWGLPBTextureTarget_h_
00030 
00031 //#include <windows.h>
00032 #include <GL/glew.h>
00033 #include <GL/wglew.h>
00034 
00035 #include "CEGUIOpenGLTextureTarget.h"
00036 #include "../../CEGUIRect.h"
00037 
00038 #if defined(_MSC_VER)
00039 #   pragma warning(push)
00040 #   pragma warning(disable : 4250)
00041 #endif
00042 
00043 // Start of CEGUI namespace section
00044 namespace CEGUI
00045 {
00046 class OpenGLTexture;
00047 
00053 class OPENGL_GUIRENDERER_API OpenGLWGLPBTextureTarget : public OpenGLTextureTarget
00054 {
00055 public:
00056     OpenGLWGLPBTextureTarget(OpenGLRenderer& owner);
00057     virtual ~OpenGLWGLPBTextureTarget();
00058 
00059     // overrides from OpenGLRenderTarget
00060     void activate();
00061     void deactivate();
00062     // implementation of TextureTarget interface
00063     void clear();
00064     void declareRenderSize(const Size& sz);
00065     // specialise functions from OpenGLTextureTarget
00066     void grabTexture();
00067     void restoreTexture();
00068 
00069 protected:
00071     static const float DEFAULT_SIZE;
00072 
00074     void initialisePBuffer();
00075 
00077     void releasePBuffer();
00078 
00080     void enablePBuffer() const;
00081 
00083     void disablePBuffer() const;
00084 
00086     void initialiseTexture();
00087 
00089     int d_pixfmt;
00091     HPBUFFERARB d_pbuffer;
00093     HGLRC d_context;
00095     HDC d_hdc;
00097     mutable HGLRC d_prevContext;
00099     mutable HDC d_prevDC;
00100 };
00101 
00102 } // End of  CEGUI namespace section
00103 
00104 #if defined(_MSC_VER)
00105 #   pragma warning(pop)
00106 #endif
00107 
00108 #endif  // end of guard _CEGUIOpenGLWGLPBTextureTarget_h_

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