[Bug 31846] New: World of Warcraft: graphical glitches with particle weather effects using D3D9 engine

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=31846

             Bug #: 31846
           Summary: World of Warcraft: graphical glitches with particle
                    weather effects using D3D9 engine
           Product: Wine
           Version: 1.5.14
          Platform: x86-64
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: directx-d3d
        AssignedTo: wine-bugs at winehq.org
        ReportedBy: thomas at ch.tudelft.nl
    Classification: Unclassified


Created attachment 41900
  --> http://bugs.winehq.org/attachment.cgi?id=41900
Screenshot of blowing snow clouds using D3D9 engine

Due to a bug in Blizzard's OpenGL engine I switched to the D3D9 engine.

All works well except for the weather in, among others, Tanaris. During a
sandstorm (sand clouds blowing towards the player) yellow, red and green pixels
temporarily form on the screen, like sand blowing against the screen. The same
is observed in the Valley of Emperors in Kun-Lai Summit, where there's snow
clouds blowing towards the player - see also the attachments. The comparison
with the OpenGL screenshot suggests that the pixels should actually be
snowflakes.

This effect is affected by the particle density setting: decreasing the setting
decreases the amount of pixels (and normally: the amount of snowflakes) and
vice versa.

This bug has been observed using wine versions 1.5.13 and 1.5.14. No others
versions were tested (using OpenGL before). Wine is set to windows XP mode
using default library settings. msvcr80.dll is present in the directory of WoW.

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