Crazy Eddie's GUI System  0.8.4
WGLPBTextureTarget.h
00001 /***********************************************************************
00002     created:    Sun Feb 1 2009
00003     author:     Paul D Turner
00004 *************************************************************************/
00005 /***************************************************************************
00006  *   Copyright (C) 2004 - 2009 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 _CEGUIOpenGLWGLPBTextureTarget_h_
00028 #define _CEGUIOpenGLWGLPBTextureTarget_h_
00029 
00030 //#include <windows.h>
00031 #include <GL/glew.h>
00032 #include <GL/wglew.h>
00033 
00034 #include "CEGUI/RendererModules/OpenGL/TextureTarget.h"
00035 #include "../../Rect.h"
00036 
00037 #if defined(_MSC_VER)
00038 #   pragma warning(push)
00039 #   pragma warning(disable : 4250)
00040 #endif
00041 
00042 // Start of CEGUI namespace section
00043 namespace CEGUI
00044 {
00045 class OpenGLTexture;
00046 
00052 class OPENGL_GUIRENDERER_API OpenGLWGLPBTextureTarget : public OpenGLTextureTarget
00053 {
00054 public:
00055     OpenGLWGLPBTextureTarget(OpenGLRendererBase& owner);
00056     virtual ~OpenGLWGLPBTextureTarget();
00057 
00058     // overrides from OpenGLRenderTarget
00059     void activate();
00060     void deactivate();
00061     // implementation of TextureTarget interface
00062     void clear();
00063     void declareRenderSize(const Sizef& sz);
00064     // specialise functions from OpenGLTextureTarget
00065     void grabTexture();
00066     void restoreTexture();
00067 
00068 protected:
00070     static const float DEFAULT_SIZE;
00071 
00073     void initialisePBuffer();
00074 
00076     void releasePBuffer();
00077 
00079     void enablePBuffer() const;
00080 
00082     void disablePBuffer() const;
00083 
00085     void initialiseTexture();
00086 
00088     int d_pixfmt;
00090     HPBUFFERARB d_pbuffer;
00092     HGLRC d_context;
00094     HDC d_hdc;
00096     mutable HGLRC d_prevContext;
00098     mutable HDC d_prevDC;
00099 };
00100 
00101 } // End of  CEGUI namespace section
00102 
00103 #if defined(_MSC_VER)
00104 #   pragma warning(pop)
00105 #endif
00106 
00107 #endif  // end of guard _CEGUIOpenGLWGLPBTextureTarget_h_
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