1 /* Copyright © 2013, Intel Corporation
3 * Permission is hereby granted, free of charge, to any person obtaining a copy
4 * of this software and associated documentation files (the "Software"), to deal
5 * in the Software without restriction, including without limitation the rights
6 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
7 * copies of the Software, and to permit persons to whom the Software is
8 * furnished to do so, subject to the following conditions:
10 * The above copyright notice and this permission notice shall be included in
11 * all copies or substantial portions of the Software.
13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
18 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 #define _GNU_SOURCE /* For RTLD_NEXT */
37 /* How many frames between reports. */
38 #define REPORT_FREQ 60
44 static struct timeval tv_last;
45 struct timeval tv_now;
47 if ((count % REPORT_FREQ) == 0) {
48 gettimeofday (&tv_now, NULL);
50 printf ("glfps: Initializing FPS timer\n");
52 double elapsed = ((tv_now.tv_sec - tv_last.tv_sec) +
53 (tv_now.tv_usec - tv_last.tv_usec) / 1e6);
54 printf ("FPS: %.3f\n", ((double) REPORT_FREQ) / elapsed);
63 glXSwapBuffers (Display *dpy, GLXDrawable drawable)
67 GLAZE_DEFER (glXSwapBuffers, dpy, drawable);