[Bug 48088] New: DIB engine does not work on a 256-color X server

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=48088

Bug ID: 48088
           Summary: DIB engine does not work on a 256-color X server
           Product: Wine
           Version: 1.5.13
          Hardware: x86
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: winex11.drv
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 65646
  --> https://bugs.winehq.org/attachment.cgi?id=65646
Regedit in Xephyr

To reproduce, run `Xephyr :1 -ac -screen 800x600x8` in one terminal window and
`DISPLAY=:1 wine regedit` in another. The window colors are positively
psychedelic.

A regression test on a Debian 6.0 Squeeze virtual machine revealed:

33ac850c80634c891b0c157bbffa612f70954a40 is the first bad commit
commit 33ac850c80634c891b0c157bbffa612f70954a40
Author: Alexandre Julliard 
Date:   Thu Sep 6 12:39:34 2012 +0200

winex11: Use window surfaces for rendering top-level windows.

It can be disabled by setting "ClientSideGraphics"="n".

:040000 040000 704eac5fc311e63d373e399c63a2488a6b3dedca
33fb0e5963c1326f8765334e4714060c89b21b5e M      dlls

And indeed, creating the registry key "HKEY_CURRENT_USER\Software\Wine\X11
Driver\ClientSideGraphics" with the value "N" or "n" allows the window to be
displayed normally (except for some unsightly dithering).