http://bugs.winehq.org/show_bug.cgi?id=27467
--- Comment #4 from DL dredgingthelake@gmail.com 2011-06-13 07:07:04 CDT --- Okay, Mirror's Edge built in vsync does work with wine-1.3.22. Turns out that I had tried it with wine-1.3.21, which didn't work.
On the subject of what the vsync commit does, is it meant to override what the driver is setting? Because that doesn't seem like behaviour that would occur under windows. Forcing vsync with the Witcher in the driver control panel on Windows works fine.