Scaling can be triggered by:
- Pressing ctrl-alt-{minus,plus} (on certain keyboard layouts)
- a SDL_VIDEORESIZE event
SDL_VIDEORESIZE is always sent on an X ConfigureNotify event when a
SDL_VideoSurface is active. (SDL_VideoSurface is NULL if a resize was
done in SDL_SetVideoMode).
So it really must be a window manager or something sending this resize
event. What WM are you using?
Notes, SDL_VIDEORESIZE (and other events) may be eaten:
- in the very early start-up stage[1] (causing the issue mentioned in comment
13)
- during switches to and from fullscreen
- (some other paths that do not affect QEMU)
[1]: http://bugzilla.libsdl.org/show_bug.cgi?id=1859
** Bug watch added: bugzilla.libsdl.org/ #1859
http://bugzilla.libsdl.org/show_bug.cgi?id=1859
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https://bugs.launchpad.net/bugs/504368
Title:
sdl window intermittently scales instead of resizing
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