[Bug 37686] New: Grass glitch in S.T.A.L.K.E.R - Shadow of Chernobyl

https://bugs.winehq.org/show_bug.cgi?id=37686

Bug ID: 37686
           Summary: Grass glitch in S.T.A.L.K.E.R - Shadow of Chernobyl
           Product: Wine
           Version: 1.7.31
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Bug is similar to bug 25613, but the grass changes colors all the time,
especially if I move the mouse (only basic colors, like red, cyan, blue, green,
etc.). It makes looking at the game very annoying. Trying various settings, I
managed to make flickering with black color only, but it doesn't work like that
anymore.

This happens only with Static lightning, as the game won't even start with
dynamic lightning (I'll file that as separate bug).

I'm running updated Ubuntu 14.04 64bit, using wine from wine team ppa (1.7.31),
and game is installed in fresh win32 prefix. Game was bought on GOG, version is
1.0006, installer is setup_stalker_shoc_2.1.0.7. The graphic card is Radeon
7950, with Catalyst 14.20.

I'll gladly try to answer questions/try stuff to make this work.