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X11: Added a test for a weird X11 error we get with Xinerama, rarely.

Ryan C. Gordon 2015-06-30 15:00:48 -04:00
parent 20ec137763
commit 1e3c28ac64
1 changed files with 23 additions and 0 deletions
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23
src/video/x11/SDL_x11modes.c
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@ -192,6 +192,21 @@ CheckXinerama(Display * display, int *major, int *minor)
#endif
return SDL_TRUE;
}
/* !!! FIXME: remove this later. */
/* we have a weird bug where XineramaQueryScreens() throws an X error, so this
is here to help track it down (and not crash, too!). */
static SDL_bool xinerama_triggered_error = SDL_FALSE;
static int
X11_XineramaFailed(Display * d, XErrorEvent * e)
{
xinerama_triggered_error = SDL_TRUE;
fprintf(stderr, "XINERAMA X ERROR: type=%d serial=%lu err=%u req=%u minor=%u\n",
e->type, e->serial, (unsigned int) e->error_code,
(unsigned int) e->request_code, (unsigned int) e->minor_code);
fflush(stderr);
return 0;
}
#endif /* SDL_VIDEO_DRIVER_X11_XINERAMA */
#if SDL_VIDEO_DRIVER_X11_XRANDR
@ -398,7 +413,15 @@ X11_InitModes(_THIS)
* or newer of the Nvidia binary drivers
*/
if (CheckXinerama(data->display, &xinerama_major, &xinerama_minor)) {
int (*handler) (Display *, XErrorEvent *);
X11_XSync(data->display, False);
handler = X11_XSetErrorHandler(X11_XineramaFailed);
xinerama = X11_XineramaQueryScreens(data->display, &screencount);
X11_XSync(data->display, False);
X11_XSetErrorHandler(handler);
if (xinerama_triggered_error) {
xinerama = 0;
}
if (xinerama) {
use_xinerama = xinerama_major * 100 + xinerama_minor;
}