[Bug 3179] New: starting Anno 1503 into campaign/mission crashes

[Wine Bugs]

http://bugs.winehq.org/show_bug.cgi?id=3179

Summary: starting Anno 1503 into campaign/mission crashes
           Product: Wine
           Version: 20050725
          Platform: PC
               URL: http://www.anno1503.com/english/productinfo/dl_demo.php4
        OS/Version: other
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: wine-directx-dplay
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

please note: i have this bug with the full-version of the game - but i would
assume it also crashes the demo version in a similar way

enter the main menu, then either start a single mission, choose a flag - or
start a campaign from the mainmenu. once the game enters the real "game" screen,
it crashes (with a really wierd backtrace).

i used some TRACE's to find out more where exactly the crash happens - it is in
d3ddevice_lock_update's glReadBuffer(GL_BACK) - but if i place a return
beforehand it crashes later - so i guess some earlier part of the app smashes
the heap, the stack, whatever.