https://bugs.freedesktop.org/show_bug.cgi?id=28771
--- Comment #33 from Sven Arvidsson sa@whiz.se 2011-02-21 16:22:38 PST --- (In reply to comment #32)
I'm still not sure if toggling vsync on/off inside an application is supposed to work (it doesn't seem to with r300g in Sauerbraten or M.A.R.S. for example). What component should a bug be filed against in this case?
At least M.A.R.S. seems to be using glXSwapIntervalSGI for vsync.
Actually, forget about this part. It works, at least in MARS. Not sure about Sauerbraten, but it could be a bug in the game.