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- Path: sparky!uunet!news.claremont.edu!nntp-server.caltech.edu!andrey
- From: andrey@cco.caltech.edu (Andre T. Yew)
- Newsgroups: rec.video.production
- Subject: Vivid-24 (was Re: Supermac's DigitalFilm... )
- Date: 28 Dec 1992 19:34:46 GMT
- Organization: California Institute of Technology, Pasadena
- Lines: 47
- Message-ID: <1hnksmINNqac@gap.caltech.edu>
- References: <33800010@hpfcmgw.FC.HP.COM> <1992Dec18.171008.22140@westford.ccur.com> <1992Dec23.065501.19144@mnemosyne.cs.du.edu> <1992Dec23.155757.1456@westford.ccur.com> <1992Dec23.133413@tpsunserv1.Prime.COM> <1992Dec23.222819.8295@mnemosyne.cs.du.edu> <1hnfkuINNmh0@fido.asd.sgi.com>
- NNTP-Posting-Host: punisher.caltech.edu
- Keywords: EditMaster...
-
- grege@chopin.asd.sgi.com (Greg Estes) writes:
-
- >In article <1992Dec23.222819.8295@mnemosyne.cs.du.edu>, nwickham@nyx.cs.du.edu (Neal Wickham) writes:
-
- >. ...Real 3D for example sounds like one of
- >|> the best on the market for any platform and it's being improved all the
- >|> time. Futher, with DMI's Vivid-24 card, you'll be able to do rendering
- > ^^^^^^^^^
- >|> in real-time like the SGI's do. You'll be able to render and animate
- > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
- >Uh, a Silicon Graphics RealityEngine can render more than 600K photo-textured
- >t-mesh triangles a second, and has a pixel-fill rate of up to 320M textured,
- >anti-aliased pixels a second. I don't know *anything* about the Vivid-24, but
- >can it really go that fast?
-
- It can't. Vivid is one of the biggest hype jobs in the Amiga
- world -- it's about as fast as, say, an SGI 4D/25 TG on really
- simple geometries (a cube or some other Platonic solid). The
- fanciest thing it can do right now is Gouraud-shading with specular
- highlights. There'd be no reason why it cannot do texture-mapping
- other than being dog-slow. It's basically a TMS34020 with a
- couple of its math coprocessors (up to four) on one PC-AT expansion
- board and some VRAM and SRAM.
-
- Their factsheet is pretty funny:
-
- (The SGI figures are from memory only, so they might be off by a
- little.)
- SGI Crimson: 50 MFLOPS
- SGI 4D/340: 80 MFLOPS
- Vivid-24 with 4 coprocessors: 160 MFLOPS (4*40 MFLOPS/processor)
-
- Then it goes on to brag about better than $100K performance
- for under $6K. This is of course with nothing at all like GL
- or Inventor to work with. Or for that matter, any released
- software.
-
- I apologize for the somewhat gratuitous bashing of Vivid,
- but it's getting pretty old to see "SGI performance for under
- $6K" especially when it stems from information given out by DMI
- (the people who make Vivid-24) that seems to be maliciously
- misleading.
-
- --Andre
-
- --
- Andre Yew andrey@cco.caltech.edu (131.215.139.2)
-