[Bug 29079] New: Serious Sam HD TSE Performance Regression

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=29079

             Bug #: 29079
           Summary: Serious Sam HD TSE Performance Regression
           Product: Wine
           Version: 1.3.32
          Platform: x86-64
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
        AssignedTo: wine-bugs at winehq.org
        ReportedBy: FinalCrisisSX at Hotmail.com
    Classification: Unclassified


Arch Linux x86_64, up to date except for Xorg (using 1.10.4) and Nvidia (using
280.13) packages due to a transparency bug in TF2 I've reported to nvidia
caused by nvidia drivers 285.05. In Serious Sam HD: The Second Encounter, at
some point between 1.3.18 and 1.3.32, the game suffers a huge performance drop.
It's odd in that if I play the game after the bad commit, it seems to have
small bursts of working fine and running smoothly then starts lagging out /
chugging along again shortly. With 1.3.18 however, it works fine continuously.
I ran a regression test and found the culprit. The bad commit description
suggests drivers over 270.xx should be fine, but it isn't the case for this
particular game for me. Other games suffer no such problems. Indeed, if I use
the patch remove-GL_ARB_map_buffer_range.patch from
http://bugs.winehq.org/show_bug.cgi?id=27600 this bug thread, the game no
longer has the performance issue, as one might expect.

68b15bc5ffe6ddf5d08cbc13479eaf718ad5e39f is the first bad commit
commit 68b15bc5ffe6ddf5d08cbc13479eaf718ad5e39f
Author: Stefan Dösinger <stefan at codeweavers.com>
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
caused major
    performance problems. If the user is using an older driver we now drop the
VBO instead of using
    doublebuffered loading, which means that we fall back to the current
behavior(no dynamic VBO) as
    needed. Dynamic VBOs are needed on Nvidia drivers for
GL_ARB_instanced_arrays.

:040000 040000 0cada15043b731febf2ef2a673aaaecc4af75f8d
c474ade74a8db2a9c547674dbb4c809841087a3d M    dlls

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