2 * Mesa 3-D graphics library
4 * Copyright (C) 1995-1998 Brian Paul
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
16 * You should have received a copy of the GNU Library General Public
17 * License along with this library; if not, write to the Free
18 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 * DOS/DJGPP glut driver v1.0 for Mesa 4.0
24 * Copyright (C) 2002 - Borca Daniel
25 * Email : dborca@yahoo.com
26 * Web : http://www.geocities.com/dborca
34 #define TIMEDELTA(dest, src1, src2) { \
35 if(((dest).tv_usec = (src1).tv_usec - (src2).tv_usec) < 0) { \
36 (dest).tv_usec += 1000000; \
37 (dest).tv_sec = (src1).tv_sec - (src2).tv_sec - 1; \
39 (dest).tv_sec = (src1).tv_sec - (src2).tv_sec; \
43 int APIENTRY
glutGet (GLenum type
)
47 case GLUT_WINDOW_RGBA
:
49 case GLUT_ELAPSED_TIME
: {
50 static int inited
= 0;
51 static struct timeval elapsed
, beginning
, now
;
53 gettimeofday(&beginning
, 0);
56 gettimeofday(&now
, 0);
57 TIMEDELTA(elapsed
, now
, beginning
);
58 /* Return elapsed milliseconds. */
59 return (int) ((elapsed
.tv_sec
* 1000) + (elapsed
.tv_usec
/ 1000));
67 int APIENTRY
glutDeviceGet (GLenum type
)