http://bugs.winehq.org/show_bug.cgi?id=12453
--- Comment #60 from DL taedium_vitae@eml.cc 2009-11-15 19:19:52 --- The SRGB patch(s) only ever fixed the original Half Life 2.It didn't help with HL2 : EP1/EP2, Portal, Left4Dead or Zeno Clash.It seems that the patch only worked properly with early versions of the source engine, and that it does not work correctly with later versions.