http://bugs.winehq.org/show_bug.cgi?id=22342
--- Comment #3 from James Scholes james.scholes@gmail.com 2010-04-12 14:23:52 --- (In reply to comment #2)
Whatever glxgears or glxinfo reports is irrelevant. They are 64-bit binaries. Wine is 32-bit.
Ah. That explains a lot. Thanks. (It's also blatantly obvious now I think about it. Durrrrrrr...)