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Internet Message Format  |  1992-12-15  |  955 b 
  1. Path: sparky!uunet!usc!cs.utexas.edu!uwm.edu!psuvax1!psuvm!sml108
  2. Organization: Penn State University
  3. Date: Tue, 15 Dec 1992 10:25:56 EST
  4. From: <SML108@psuvm.psu.edu>
  5. Message-ID: <92350.102556SML108@psuvm.psu.edu>
  6. Newsgroups: comp.sys.sgi.graphics
  7. Subject: Re: Indigo XS24 Sphere library z-buffering problems
  8. References: <92349.141625SML108@psuvm.psu.edu> <tk21c0o@zola.esd.sgi.com>
  9. Lines: 15
  10.  
  11. In article <tk21c0o@zola.esd.sgi.com>, arthur@sgi.com (Arthur Evans) says:
  12. >
  13. >
  14. >Are you sure you have zbuffers?  Zbuffer hardware is an extra
  15. >cost option with XS24 graphics, and unlike Entry graphics XS24
  16. >doesn't do software zbuffering.
  17.  
  18. That's the problem...  I was going by the graphics programming manual's
  19. statement about software z-buffering...
  20.  
  21. So given that I do not have z-buffering on this machine, how does it run
  22. programs like flight and battlezone without screwing up the graphics?
  23. Do they just sort objects by depth before they are drawn?
  24.  
  25. Scott
  26.