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- Path: sparky!uunet!paladin.american.edu!darwin.sura.net!dtix!mimsy!afterlife!adm!news
- From: BABINB@vax1.dseg.ti.com
- Newsgroups: comp.sys.sgi
- Subject: RE: GL puzzle: zbuffer madness
- Message-ID: <32283@adm.brl.mil>
- Date: 31 Aug 92 14:32:55 GMT
- Sender: news@adm.brl.mil
- Lines: 10
-
-
- The reason why the first program works and the second doesn't is that there
- is only one zbuffer per graphics head. This means for all systems except the
- Skywriter there is a single zbuffer available for hidden surface removal.
- Thus, the first program works because you clear the zbuffer before drawing
- each frame. But, the second program doesn't work because the zbuffer still
- has the data from the first frame.
- Hope this helps.
-
- Brad Babin
-