[Bug 31242] New: Dota 2: dense fog all over the map

http://bugs.winehq.org/show_bug.cgi?id=31242

Bug #: 31242
           Summary: Dota 2: dense fog all over the map
           Product: Wine
           Version: 1.5.9
          Platform: x86-64
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: directx-d3d
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]
    Classification: Unclassified

Created attachment 41037
  --> http://bugs.winehq.org/attachment.cgi?id=41037
totally fogged map

Since wine 1.5.9, Dota 2 looks as seen in the attached screenshot. For what it
actually should look like, see http://bugs.winehq.org/attachment.cgi?id=40782.
The game is now completely unplayable because the player can hardly see
anything. This is a regression report.

The bug was not present in 1.5.8 (though in 1.5.8 the game was unplayable from
a performance point of view due to http://bugs.winehq.org/show_bug.cgi?id=30986
which was fixed in 1.5.9).

I attached a log file including Steam and subsequent Dota 2 startup. It
contains various "fixme:d3d:debug_d3dformat Unrecognized" and
"fixme:d3d:wined3d_get_format" entries that were not present in previous wine
versions (though I don't know whether or not this hints to the bug's actual
cause).

For a comparison to startup logs on wine 1.5.7, see the attachments of
http://bugs.winehq.org/show_bug.cgi?id=31071.

My configuration:
wine-1.5.9 compiled from git (using "1.5.9"-tagged commit) using a new prefix,
GeForce GTX 260, nvidia driver 302.17, Xubuntu 12.04 x64 (xfwm4.10.0), kernel
3.2.0-26-generic