http://bugs.winehq.org/show_bug.cgi?id=20053
--- Comment #44 from Daniel Harvison sirbubbles01@yahoo.com.au 2010-05-14 07:15:54 --- not resolved so far as hl2 episode 2 is concerned. There's a weird graphical glitch where shining a torch/flashlight is concerned, and some graphical effects, such as a glowing blue device worn by Alyx is not rendered correctly. Apart from that, it seems to work okay, as long as you're using GLSL shaders (UseGLSL=enabled).