/* 	-*-ObjC-*- */
/* XGOpenGL - openGL management using glX

   Copyright (C) 2002 Free Software Foundation, Inc.

   Author: Frederic De Jaeger
   Date: Nov 2002

   This file is part of the GNUstep GUI Library.

   This library 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 3 of the License, or (at your option) any later version.

   This library 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 library; see the file COPYING.LIB.
   If not, see <http://www.gnu.org/licenses/> or write to the 
   Free Software Foundation, 51 Franklin Street, Fifth Floor, 
   Boston, MA 02110-1301, USA.
*/ 

#ifndef _GNUstep_H_XGOpenGL
#define _GNUstep_H_XGOpenGL

#include <AppKit/NSOpenGL.h>

#define id _gs_avoid_id_collision
#define BOOL XWINDOWSBOOL
#include <GL/glx.h>
#undef id
#undef BOOL

@class NSView;
@class XGXSubWindow;
@class XGGLPixelFormat;

@interface XGGLContext : NSOpenGLContext
{
  GLXContext        glx_context;
  GLXWindow         glx_drawable;
  XGXSubWindow     *xSubWindow;
  XGGLPixelFormat  *pixelFormat;
}

- (GLXContext)glxcontext;

@end

@interface XGGLPixelFormat : NSOpenGLPixelFormat
{
  @public
  union
    {
      GLXFBConfig  *fbconfig;
      XVisualInfo  *visualinfo;
    } configurations;

  int configurationCount;
}

- (XVisualInfo *)xvinfo;
- (GLXContext)createGLXContext: (XGGLContext *)share;
- (GLXWindow) drawableForWindow: (Window)xwindowid;

@end

static inline int
GSglxMinorVersion(Display *dpy)
{
  int major, minor;

  if (False == glXQueryVersion(dpy, &major, &minor))
    {
      return -1;
    }

  return minor;
}

#endif