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
38 typedef void (* fips_glXSwapBuffers_t)(Display *dpy, GLXDrawable drawable);
41 lookup (const char *name)
43 const char *libgl_filename = "libGL.so.1";
44 static void *libgl_handle = NULL;
47 libgl_handle = dlwrap_real_dlopen (libgl_filename, RTLD_NOW | RTLD_DEEPBIND);
49 fprintf (stderr, "Error: Failed to dlopen %s\n",
55 return dlwrap_real_dlsym (libgl_handle, name);
59 call_glXSwapBuffers (Display *dpy, GLXDrawable drawable)
61 static fips_glXSwapBuffers_t real_glXSwapBuffers = NULL;
62 const char *name = "glXSwapBuffers";
64 if (! real_glXSwapBuffers) {
65 real_glXSwapBuffers = (fips_glXSwapBuffers_t) lookup (name);
66 if (! real_glXSwapBuffers) {
67 fprintf (stderr, "Error: Failed to find function %s.\n",
72 real_glXSwapBuffers (dpy, drawable);
76 glXSwapBuffers (Display *dpy, GLXDrawable drawable)
78 static int initialized = 0;
80 static struct timeval tv_start, tv_now;
84 gettimeofday (&tv_start, NULL);
88 call_glXSwapBuffers (dpy, drawable);
91 if (frames % 60 == 0) {
93 gettimeofday (&tv_now, NULL);
95 fps = (double) frames / (tv_now.tv_sec - tv_start.tv_sec +
96 (tv_now.tv_usec - tv_start.tv_usec) / 1.0e6);
98 printf("FPS: %.3f\n", fps);
103 typedef __GLXextFuncPtr (* fips_glXGetProcAddressARB_t)(const GLubyte *func);
105 glXGetProcAddressARB (const GLubyte *func)
107 static fips_glXGetProcAddressARB_t real_glXGetProcAddressARB = NULL;
108 const char *name = "glXGetProcAddressARB";
110 if (! real_glXGetProcAddressARB) {
111 real_glXGetProcAddressARB = (fips_glXGetProcAddressARB_t) lookup (name);
112 if (! real_glXGetProcAddressARB) {
113 fprintf (stderr, "Error: Failed to find function %s.\n",
119 if (strcmp ((const char *)func, "glXSwapBuffers") == 0)
120 return (__GLXextFuncPtr) glXSwapBuffers;
122 return real_glXGetProcAddressARB (func);