v1.3.1p10: deep sky objects only partially drawn

[selden]

When looked at from certain viewpoints, very simple deepsky objects are only partially drawn.

Here's one example:


Note that the upper left corner is missing from the picture of M42. It's just a texture on the front of a simple square object.

Full details, inclucing a 305KB zip archive and Cel://URLs to reproduce the problem are described at http://www.lns.cornell.edu/~seb/celestia/m78-bug.html

This problem is seen in Celestia v1.3.1pre10. I've seen it in earlier versions, too.

System:
256MB 500MHz P3, WinXP Pro SP1
128MB GF4 Ti4200, Detonator 45.23 whql, OpenGL 1.4
Celestia v1.3.1 pre10 and eariler

[AdamOfTheTable]

Yeah check out the dark matter add-on, glows blue, also gets holes at certain angles. Ran out of its 3d rendering room maybe?
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I see it with pre11 too. It's just interesting, and goes away if the object is oriented differently.