wine users - Sep 2010 - Tomb Raider Anniversary Issue w/ Water In-Game

So Tomb Raider Anniversary is my first official attempt at a port of my own.
I chose TRA because not only do i love the TR series, but i also wanted to port
a game i knew for sure was capable of being ported - meaning i checked in the
App DB to make sure it ran at Gold/ Platinum levels of performance.

I downloaded the Windows demo installer (i didn't want to buy the game until
i could at least port the demo) and used Wine to download the full demo and on
my first attempt i managed to port the demo file successfully! :D

In fact, the port i produced is ALMOST perfect - except:

for some reason whenever i encounter water in-game the game's display stops
working -- as in like the game is still running and the screen isn't black
or anything, but for some reason it just kinda freezes.
for some reason though, this isn't like a usual crash because:

a) the sound still works and i can HEAR her swimming around in the water and i
can hear the menu open when i pause the game -- so the game still works when
this happens, it just stops working under visual terms of the gameplay.

b) if i open the menu and exit the level (i couldn't see what i was doing
but i knew where the exit selection was) the game's main menu screen is back
all normal! the picture is moving again as if nothing happened.

anyway, if i start the level again, the game plays normally, except each time i
jump in the water i run into this error again.

*Notes -- 
a) I disabled the water settings (reflections, water effects) to test if this
helped the problem but it didn't make a difference as far as i could tell.

b) this problem actually does not ALWAYS happen when i jump into the water, it
only occurs if i try diving underneath the water - like swimming below the
surface.


Anyway, if anyone could help me out on this problem that would be awesome!
thanks for your help in advance! ^_^

hey -- to anyone who also experiences this problem - i figured out the solution!

for some reason -- whenever "full screen effects" are enabled, it adds
an effect to the water that apparently doesn't work too well on my computer.
once the "full screen effects" is disabled, this problem no longer
occurs.

note -- you can still run the game full screen, you just have to click on the
"options" menu in game :)

What graphics drivers do you use?