http://bugs.winehq.org/show_bug.cgi?id=24928
--- Comment #21 from Rudolf Mayerhofer rm@eightyfive.net 2010-11-07 05:55:30 CST --- (In reply to comment #15)
This might thus conclude that whoever is compiling WINE for Ubuntu hasn't compiled it properly for the sunshafts to work for some people (as it only affects some people and not all). I will try to contact that person soon.
After looking through gx.log from WoW it seems that sunshafts and higher liquid details require special texture formats to work and one of them (INTZ) was added to Wine a few days ago (commit f0b0c1b1dddf606177651deb45c0afd6259076aa). This means that the next Wine version (1.3.7) should enable those features for most people using d3d9.