Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!zaphod.mps.ohio-state.edu!wuarchive!psuvax1!swatsun!gessel From: gessel@cs.swarthmore.edu (Daniel Mark Gessel) Newsgroups: comp.sys.next Subject: Re: NeXTdimension programming Message-ID: Date: 22 Sep 90 02:58:30 GMT References: Distribution: comp Organization: Swarthmore College, PA, USA Lines: 35 In andrey@beyond.cs.caltech.edu (Andre T. Yew) writes: > So do any of you who've seen the color NeXT or have literature on it >know how to do that 30,000 Gouraud-shaded triangles per second programming? >I assume there's nothing yet like Silicon Graphics' GL (otherwise everyone >would be talking about it :-). Also, what does that 30,000 polygon figure >mean? I know it's a Gouraud-shaded triangle, but is it 3D (I guess Gouraud >shading would imply this), is it lit, is it valid for arbitrary orientation? >Is there a limit on the number of light-sources? How many 3D vectors can it >draw per second? > Any info would be greatly appreciated. BTW, I'm interested in the >24-bit performance, not the 16-bit thing, but then again, the NeXTdimension >board can't do any less. >-- > Andre Yew > andrey@through.cs.caltech.edu > (131.215.128.1) That, I beleive, is what the i860 can do using it's builtin z-buffer, builtin shading, and builtin pixel operations can do. The color NeXT doesn't seem to have the option of a z-buffer, although one could be easilly implemented in the local ram of the i860. I don't know if it's any slower. Dan -- Internet: gessel@cs.swarthmore.edu UUCP: {bpa,cbmvax}!swatsun!gessel