randy@tessa.iaf.uiowa.edu (randy frank) (06/18/91)
I have been reading a couple of mesages about attempting to analyze a Zbuffer (In my code I generate a Zbuffer in SW and use it to prime the Zbuffer instead of clearing it). The problem on some machines is the signed 24bit integer. This problem can be avoided by using lsetdepth() in such a way that the negative numbers are never used. I use it in my code so that all machines use the same depths as a GTX and I don't have to write multiple versions of my Zbuffer generator. The problems can arise if your application needs the extra Zbuffer depth of the PI. Generally this is not a large problem. -- rjf. Randy Frank, Engineer | (319) 335-6712 University of Iowa, Image Analysis Facility | 73 EMRB randy@tessa.iaf.uiowa.edu | Iowa City, IA 52242