source: downloads/RenderSystems/GL/include/GLX/OgreGLXRenderTexture.h @ 3

/*
-----------------------------------------------------------------------------
This source file is part of OGRE
(Object-oriented Graphics Rendering Engine)
For the latest info, see http://www.ogre3d.org/

Copyright (c) 2000-2006 Torus Knot Software Ltd
Also see acknowledgements in Readme.html

This program is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later
version.

This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place - Suite 330, Boston, MA 02111-1307, USA, or go to
http://www.gnu.org/copyleft/lesser.txt.

You may alternatively use this source under the terms of a specific version of
the OGRE Unrestricted License provided you have obtained such a license from
Torus Knot Software Ltd.
-----------------------------------------------------------------------------
*/
#ifndef __GLXRenderTexture_H__
#define __GLXRenderTexture_H__

#include "OgrePrerequisites.h"

#include "OgreGLPBuffer.h"
#include "OgreGLXContext.h"

#include <X11/Xlib.h>
#include <GL/glx.h>
namespace Ogre
{

    class _OgrePrivate GLXPBuffer : public GLPBuffer
    {
    public:
        GLXPBuffer(PixelComponentType format, size_t width, size_t height);
        ~GLXPBuffer();
        
        virtual GLContext *getContext();
    protected:
        void createPBuffer();

        ::Display      *_pDpy;
        ::GLXContext   _hGLContext;
        ::GLXPbuffer   _hPBuffer;
                ::GLXFBConfig  mFBConfig; 
        Ogre::GLXContext   *mContext;
        
        /// Find out which extension to use for floating point
        /// Possible floating point extensions, in order of preference (ARB is best)
        enum RTFType {
            RTF_NONE=0,
            RTF_NV=1,    /** GLX_NV_float_buffer */
            RTF_ATI=2,   /** GLX_ATI_pixel_format_float */
            RTF_ARB=3    /** GLX_ARB_fbconfig_float */
        };
        
        RTFType detectRTFType();
    };
}
#endif