[quake3-bugzilla] [Bug 5097] New: Menu corrupted on start

[bugzilla-daemon at icculus.org]

https://bugzilla.icculus.org/show_bug.cgi?id=5097

           Summary: Menu corrupted on start
           Product: ioquake3
           Version: SVN HEAD
          Platform: SGI
        OS/Version: IRIX
            Status: NEW
          Severity: minor
          Priority: P3
         Component: Video
        AssignedTo: zakk at icculus.org
        ReportedBy: ioquake at canavan.de
         QAContact: quake3-bugzilla at icculus.org


Created attachment 2862
  --> https://bugzilla.icculus.org/attachment.cgi?id=2862
Initialize depth buffer on startup.

The menu and loading screen are (randomly) corrupted on IRIX until a game is
started. The corruption only affects (some random parts of) the (black)
background areas, where the mouse cursor sometimes leaves trails. The corrupted
areas may flicker terribly, possibly showing some parts of the id logo video
shown before.
This is reported e.g. here:
http://forums.nekochan.net/viewtopic.php?f=15&t=12556&view=unread#p133490

It turns out that the depth buffer is not properly initialized.The enclosed
patch initializes the depth buffer of both front and back buffers to 1.0,
however it would probably be better to perform this when clearing the screen to
show the menu.

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