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x11: XSync while trying to catch XRRSetScreenSize error.

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Reference issue #4561
This commit is contained in:
Ryan C. Gordon 2021-07-31 18:27:14 -04:00
parent cb1fd30e9a
commit 4c7825f6bd
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src/video/x11/SDL_x11modes.c
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@ -1059,6 +1059,7 @@ X11_SetDisplayMode(_THIS, SDL_VideoDisplay * sdl_display, SDL_DisplayMode * mode
crashing */
PreXRRSetScreenSizeErrorHandler = X11_XSetErrorHandler(SDL_XRRSetScreenSizeErrHandler);
X11_XRRSetScreenSize(display, RootWindow(display, data->screen), mode->w, mode->h, mm_width, mm_height);
X11_XSync(display, False); /* hopefully force any protocol errors to process with this handler. */
X11_XSetErrorHandler(PreXRRSetScreenSizeErrorHandler);
status = X11_XRRSetCrtcConfig (display, res, output_info->crtc, CurrentTime,