http://bugs.winehq.org/show_bug.cgi?id=16580
--- Comment #18 from DL taedium_vitae@eml.cc 2010-02-22 17:02:31 --- "DL, what is your video card? You sure you don't have _any_ Wine configuration changes except video memory size if required?"
I just checked with a fresh wine prefix, with no added registry entries or winecfg edits, and the sky works correctly.
I use a GTX 275, with nvidia driver version 190.53.