As I got some e-mails about this: if you're on amd64 and Wine complains that it couldn't find a 3D acceleration card, then this is no bug in my wine-unstable packages but #614805.
The short-term workaround for you is to use
LIBGL_DRIVERS_PATH=/usr/lib32/dri. You can either put it in front
of every Wine invocation or you can export the variable in a specific shell
session (don't export it globally), in which you'll run Wine or other programs
needing the 32 bit libraries.
#614805 should be fixed automatically by the next ia32-libs upload, if it contains a version of Mesa containing Git commit cdd1912f.
