gl_init.h

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/*
 * Vega Strike
 * Copyright (C) 2001-2002 Daniel Horn
 *
 * http://vegastrike.sourceforge.net/
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU 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 General Public License for more details.
 *
 * You should have received a copy of the GNU 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.
 */

#ifdef __cplusplus
extern "C"
{
#endif

#ifndef _GL_INIT_H_
#define _GL_INIT_H_

//#include "vegastrike.h"

/* Hack to fix compiling problem with old gl.h's, reported by Steve
 *  Baker <sjbaker1@airmail.net>.  Some old gl.h's don't include glext.h, but
 *  do this:
 *
 * #define GL_EXT_compiled_vertex_array    1
 *
 *  since they do define the glLockArraysEXT/glUnlockArraysEXT
 *  functions.  However, this prevents PFNGLLOCKARRAYSEXTPROC /
 *  PFNGLUNLOCKARRAYSEXTPROC from being defined in glext.h.  So, we do
 *  the following, which at worst results in a warning (and is awfully
 *  ugly):
 *
 * #undef GL_EXT_compiled_vertex_array
 *
 *  The *correct* thing to do would be for gl.h to #include glext.h, as
 *  recent gl.h's do.  However, versions of Mesa as recent as 3.2.1
 *  don't do this, so we have to work around it.
 */
//#undef GL_EXT_compiled_vertex_array

/* Shouldn't need to include glext.h if gl.h is recent, but alas we can't
 * count on that...  */

#if defined (IRIX)
#include <GL/gl.h>
#include <GL/glut.h>
typedef void (*PFNGLLOCKARRAYSEXTPROC)( GLint first, GLsizei count );
typedef void (*PFNGLUNLOCKARRAYSEXTPROC)( void );

#elif !defined (_WIN32)
#if defined (__APPLE__) || defined (MACOSX)
    #include <GLUT/glut.h>
    #include <OpenGL/glext.h>
#else
    #include <GL/glut.h>
    #include <GL/glext.h>
#endif

#if !defined (GL_GLEXT_VERSION) || GL_GLEXT_VERSION < 6
#   error "*** You need a more recent copy of glext.h.  You can get one at http: //oss.sgi.com/projects/ogl-sample/ABI/glext.h ; it goes in /usr/include/GL. ***"
#endif
#endif
#if defined (PFNGLLOCKARRAYSEXTPROC) && defined (PFNGLUNLOCKARRAYSEXTPROC)
extern PFNGLLOCKARRAYSEXTPROC   glLockArraysEXT_p;
extern PFNGLUNLOCKARRAYSEXTPROC glUnlockArraysEXT_p;
#endif

#ifdef __cplusplus
} /* extern "C" */
#endif
#endif