fbConfigs = ChooseFBConfig(dpy, screen, fbAttribs[attempt], &nConfigs);
if (nConfigs==0 || !fbConfigs) {
printf("Note: glXChooseFBConfig(%s) failed\n", fbString[attempt]);
fbConfigs = ChooseFBConfig(dpy, screen, fbAttribs[attempt], &nConfigs);
if (nConfigs==0 || !fbConfigs) {
printf("Note: glXChooseFBConfig(%s) failed\n", fbString[attempt]);