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70 lines
1.9 KiB
C
70 lines
1.9 KiB
C
/*
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* Mesa 3-D graphics library
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* Version: 3.4
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* Copyright (C) 1995-1998 Brian Paul
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/*
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* DOS/DJGPP glut driver v1.0 for Mesa 4.0
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*
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* Copyright (C) 2002 - Borca Daniel
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* Email : dborca@yahoo.com
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* Web : http://www.geocities.com/dborca
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*/
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#include "GL/glut.h"
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#include <sys/time.h>
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#define TIMEDELTA(dest, src1, src2) { \
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if(((dest).tv_usec = (src1).tv_usec - (src2).tv_usec) < 0) { \
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(dest).tv_usec += 1000000; \
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(dest).tv_sec = (src1).tv_sec - (src2).tv_sec - 1; \
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} else { \
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(dest).tv_sec = (src1).tv_sec - (src2).tv_sec; \
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} \
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}
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int APIENTRY glutGet (GLenum type)
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{
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switch (type) {
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case GLUT_WINDOW_RGBA:
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return 1;
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case GLUT_ELAPSED_TIME: {
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static int inited = 0;
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static struct timeval elapsed, beginning, now;
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if (!inited) {
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gettimeofday(&beginning, 0);
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inited = 1;
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}
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gettimeofday(&now, 0);
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TIMEDELTA(elapsed, now, beginning);
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/* Return elapsed milliseconds. */
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return (int) ((elapsed.tv_sec * 1000) + (elapsed.tv_usec / 1000));
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}
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default:
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return 0;
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}
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}
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int APIENTRY glutDeviceGet (GLenum type)
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{
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return 0;
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}
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