[Bug 10606] New: L/R volume of a sound source changes improperly in S.T.A.L .K.E.R.

http://bugs.winehq.org/show_bug.cgi?id=10606

Summary: L/R volume of a sound source changes improperly in
                    S.T.A.L.K.E.R.
           Product: Wine
           Version: CVS/GIT
          Platform: PC
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: minor
          Priority: P2
         Component: wine-directx-dsound
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

When there is a continous source nearby and I look left or right from it, the
L/R channels are supposed to change volumes. However this doesn't work properly
in Wine.
The channels are of same volume when looking directly at the source. Then say I
look away left from the source and the sound volume decreases on the left
channel and reaches its minimum at around 35 degrees away from the source. This
it the same as in Windows.
However when looking further away towards 90 degrees, in Windows the volume in
the left channel increases back to a certain point and I think it gains some
sort of effect. But not in Wine, in Wine the left volume just stays at the
minimal level.

This happens with both ALSA and OSS. Default rate is 44100, default bits 16.
Audio chip is Intel HD audio.