/usr/include/CEGUI/RendererModules/OpenGL/CEGUIOpenGLGLXPBTextureTarget.h is in libcegui-mk2-dev 0.7.6-2ubuntu4.
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filename: CEGUIOpenGLGLXPBTextureTarget.h
created: Sat Jan 31 2009
author: Paul D Turner
*************************************************************************/
/***************************************************************************
* Copyright (C) 2004 - 2009 Paul D Turner & The CEGUI Development Team
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
***************************************************************************/
#ifndef _CEGUIOpenGLGLXPBTextureTarget_h_
#define _CEGUIOpenGLGLXPBTextureTarget_h_
#include <GL/glxew.h>
#include "CEGUIOpenGLTextureTarget.h"
#include "../../CEGUIRect.h"
// Start of CEGUI namespace section
namespace CEGUI
{
class OpenGLTexture;
/*!
\brief
OpenGLGLXPBTextureTarget - allows rendering to an OpenGL texture via the
pbuffer provided in GLX 1.3 and above.
*/
class OPENGL_GUIRENDERER_API OpenGLGLXPBTextureTarget : public OpenGLTextureTarget
{
public:
OpenGLGLXPBTextureTarget(OpenGLRenderer& owner);
virtual ~OpenGLGLXPBTextureTarget();
// overrides from OpenGLRenderTarget
void activate();
void deactivate();
// implementation of TextureTarget interface
void clear();
void declareRenderSize(const Size& sz);
// specialise functions from OpenGLTextureTarget
void grabTexture();
void restoreTexture();
protected:
//! default size of created texture objects
static const float DEFAULT_SIZE;
//! Initialise the PBuffer with the needed size
void initialisePBuffer();
//! Switch rendering so it targets the pbuffer
void enablePBuffer() const;
//! Switch rendering to target what was active before the pbuffer was used.
void disablePBuffer() const;
//! Perform basic initialisation of the texture we're going to use.
void initialiseTexture();
//! Selects an appropriate FB config to use and stores in d_fbconfig.
void selectFBConfig();
//!Creates the context to use with the pbuffer.
void createContext();
//! X server display.
Display* d_dpy;
//! GLX config used in creating pbuffer
GLXFBConfig d_fbconfig;
//! GLX context
GLXContext d_context;
//! The GLX pbuffer we're using.
GLXPbuffer d_pbuffer;
//! stores previous X display when switching to pbuffer
mutable Display* d_prevDisplay;
//! stores previous GLX drawable when switching to pbuffer
mutable GLXDrawable d_prevDrawable;
//! stores previous GLX context when switching to pbuffer
mutable GLXContext d_prevContext;
};
} // End of CEGUI namespace section
#endif // end of guard _CEGUIOpenGLGLXPBTextureTarget_h_
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