[Bug 27600] New: Screen fills with visual artifacts in World of Tanks.

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=27600

           Summary: Screen fills with visual artifacts in World of Tanks.
           Product: Wine
           Version: unspecified
          Platform: x86
               URL: http://game.worldoftanks.eu/update
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: directx-d3d
        AssignedTo: wine-bugs at winehq.org
        ReportedBy: vincas.miliunas at gmail.com
                CC: stefan at codeweavers.com


Created an attachment (id=35280)
 --> (http://bugs.winehq.org/attachment.cgi?id=35280)
Output log, but doesn't show anything important.

Time to report an another WINE regression for World of Tanks, in this one
screen fills with a mixture of triangles and font textures.

The regression was brought by:
commit 68b15bc5ffe6ddf5d08cbc13479eaf718ad5e39f
Author: Stefan Dösinger
Date:   Tue Apr 19 21:24:26 2011 +0200

    wined3d: Give GL_ARB_map_buffer_range another try.

    Nvidia's 270.xx.yy driver series fix the glMapBuffer alignment issues that
c
    performance problems. If the user is using an older driver we now drop the
V
    doublebuffered loading, which means that we fall back to the current
behavio
    needed. Dynamic VBOs are needed on Nvidia drivers for
GL_ARB_instanced_array

(the patch was actually committed on Jun 14)

The bug can be reproduced by logging in an account and clicking on the depot,
store, statistics or other tabs in the garage.

Alt-tabing in and out resets the screen back to normal (using virtual desktop).

During the actual gameplay, the frame rate is a lot lower then normal. Notable
fixme for gameplay is:
fixme:d3d:wined3d_buffer_preload Too many declaration changes or converting
dynamic buffer, stopping converting

Using WINEDEBUG=+d3d the frame rate is very low in the garage, the bug does not
manifests itself.

Configuration:
ATI Radeon HD 3650, fglrx 11.5
DirectDrawRenderer: opengl
UseGLSL: disabled

The game is free to download and play - http://game.worldoftanks.eu/update

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