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
35 typedef void (* fips_glXSwapBuffers_t)(Display *dpy, GLXDrawable drawable);
38 lookup (const char *name)
40 const char *libgl_filename = "libGL.so.1";
41 static void *libgl_handle = NULL;
44 libgl_handle = dlwrap_real_dlopen (libgl_filename, RTLD_NOW | RTLD_DEEPBIND);
46 fprintf (stderr, "Error: Failed to dlopen %s\n",
52 return dlwrap_real_dlsym (libgl_handle, name);
56 call_glXSwapBuffers (Display *dpy, GLXDrawable drawable)
58 static fips_glXSwapBuffers_t real_glXSwapBuffers = NULL;
59 const char *name = "glXSwapBuffers";
61 if (! real_glXSwapBuffers) {
62 real_glXSwapBuffers = (fips_glXSwapBuffers_t) lookup (name);
63 if (! real_glXSwapBuffers) {
64 fprintf (stderr, "Error: Failed to find function %s.\n",
69 real_glXSwapBuffers (dpy, drawable);
73 glXSwapBuffers (Display *dpy, GLXDrawable drawable)
75 static int initialized = 0;
77 static struct timeval tv_start, tv_now;
81 gettimeofday (&tv_start, NULL);
85 call_glXSwapBuffers (dpy, drawable);
88 if (frames % 60 == 0) {
90 gettimeofday (&tv_now, NULL);
92 fps = (double) frames / (tv_now.tv_sec - tv_start.tv_sec +
93 (tv_now.tv_usec - tv_start.tv_usec) / 1.0e6);
95 printf("FPS: %.3f\n", fps);
100 typedef __GLXextFuncPtr (* fips_glXGetProcAddressARB_t)(const GLubyte *func);
102 glXGetProcAddressARB (const GLubyte *func)
104 static fips_glXGetProcAddressARB_t real_glXGetProcAddressARB = NULL;
105 const char *name = "glXGetProcAddressARB";
107 if (! real_glXGetProcAddressARB) {
108 real_glXGetProcAddressARB = (fips_glXGetProcAddressARB_t) lookup (name);
109 if (! real_glXGetProcAddressARB) {
110 fprintf (stderr, "Error: Failed to find function %s.\n",
116 if (strcmp ((const char *)func, "glXSwapBuffers") == 0)
117 return (__GLXextFuncPtr) glXSwapBuffers;
119 return real_glXGetProcAddressARB (func);