http://bugs.winehq.org/show_bug.cgi?id=27750
--- Comment #4 from GyB gyebro69@gmail.com 2012-02-16 10:56:04 CST --- It seems I wasn't thorough enough in my previous testing with TR:L. Shadows are indeed present with a recent Wine, but only when 'Next Generation Content' display option is turned off. With that option turned on, shadows are still missing. Next Generation Content (HDR imaging) is known to cause visual glitches in TR:L, see bug #27964 (later this was marked as a dupe of bug #24630).
As for the visual glitches with HDR imaging turned on there is a workaround: AlwaysOffscreen=enabled. However, shadows are still missing with AO=on + NexGen Content enabled.