On my Sony Viao laptop when I have tested games like Tanx or McClaw's Tank game, the textures don't have any transparency. The built in graphics card is a Radeon IGP 345M with the latest ATI drivers. The thing is that I can play Half Life 2 on it and there are no transparency issues what so ever.

Does anyone have any ideas as to why one game works fine while the others do not? Any know of any work-arounds?