/**
 * $Id$
 *
 * ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
 *
 * 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. The Blender
 * Foundation also sells licenses for use in proprietary software under
 * the Blender License.  See http://www.blender.org/BL/ for information
 * about this.
 *
 * 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.
 *
 * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
 * All rights reserved.
 *
 * The Original Code is: all of this file.
 *
 * Contributor(s): none yet.
 *
 * ***** END GPL/BL DUAL LICENSE BLOCK *****
 * os dependent include locations of gl.h
 */

#ifndef BIF_GL_H
#define BIF_GL_H

	/* Although not really a great idea to copy these defines
	 * from Windows' winnt.h, this lets us use GL without including
	 * windows.h everywhere (or BLI_winstuff.h) which is a good thing.
	 */
#ifdef WIN32
#ifndef APIENTRY
#define APIENTRY	__stdcall
#endif

#ifndef CALLBACK
#define CALLBACK	__stdcall
#endif

#ifndef WINGDIAPI
#define WINGDIAPI	__declspec(dllimport)
#endif
#endif

#ifdef __APPLE__
#include <OpenGL/gl.h>
#include <OpenGL/glu.h>
#else
#include <GL/gl.h>
#include <GL/glu.h>
#endif
	/*
	 * these should be phased out. cpack should be replaced in
	 * code with calls to glColor3ub, lrectwrite probably should
	 * change to a function. - zr
	 */
	 
/* 
 *
 * This define converts a numerical value to the equivalent 24-bit
 * colour, while not being endian-sensitive. On little-endians, this
 * is the same as doing a 'naive'indexing, on big-endian, it is not!
 * */
#define cpack(x)	glColor3ub( ((x)&0xFF), (((x)>>8)&0xFF), (((x)>>16)&0xFF) )

#define glMultMatrixf(x)		glMultMatrixf( (float *)(x))
#define glLoadMatrixf(x)		glLoadMatrixf( (float *)(x))

#define lrectwrite(a, b, c, d, rect)	{glRasterPos2i(a,  b);glDrawPixels((c)-(a)+1, (d)-(b)+1, GL_RGBA, GL_UNSIGNED_BYTE,  rect);}

#endif /* #ifdef BIF_GL_H */