Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!seismo!rutgers!cbmvax!daveh From: daveh@cbmvax.cbm.UUCP (Dave Haynie) Newsgroups: comp.sys.amiga Subject: Re: Re: Amiga news (genlock & lots more, *long* but juicy) Message-ID: <1133@cbmvax.cbmvax.cbm.UUCP> Date: Wed, 17-Dec-86 18:00:18 EST Article-I.D.: cbmvax.1133 Posted: Wed Dec 17 18:00:18 1986 Date-Received: Thu, 18-Dec-86 21:36:49 EST References: <2351@ncrcae.UUCP> Organization: Commodore Technology, West Chester, PA Lines: 48 --Admittedly, the imagery is pretty simple compared to some of the other Amiga --ray tracing images, but it's still a pretty incredible business card!!! -- --The amimation uses a small set of images (12?), but this lets everything fit --in memory and blast out full speed. I don't know if he's displaying a full --screen for each frame, or just alternating between two, and substituting areas. -- --Anybody got any other neat demos that Jack can't fake on those ST thingies? -- ---- --George Robbins - now working for, uucp: {ihnp4|seismo|rutgers}!cbmvax!grr --but no way officially representing arpa: cbmvax!grr@seismo.css.GOV --Commodore, Engineering Department fone: 215-431-9255 (only by moonlite) - - Ahhh... Sorry, George, but about TWO MONTHS AGO Xanth Computers displayed a - demo VERY SIMILAR in design and execution... a set of four mirrored balls - moving in an eggbeater pattern around each other over a scrolling "floor" - with the Atari logo as a pattern and beneath a scrolling "ceiling" with - a checkerboard pattern. Everything is reflected properly in the balls - (in fact, the only way you see the scrolling checkerboard is as a reflection - on the tops of the balls) and the shadows are all drawn properly. It was - shown at a San Diego Atari computer festival and I'm sure Neil Harris at - Atari could tell you more about it. - - So before you go off making CHEAP SHOTS about who's "faking" whom... You mean the Atari demo used something on the order of 4096 simultaneous colors! Pretty amazing for an ST, I'd even settle for 512 simultaneous colors. Its pretty obvious that a ray-traced image can be displayed, static or animated, on either machine. What the Atari can't do, which is the point of George's article, is to display ray traced images with the gradual changes in color that most of these images require. Have you seen the juggler? And realize, of course, that Dave Wecker's static ray tracing images, 320 x 400 in 256 colors I believe, have been around longer than 2 months. -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Dave Haynie {caip,ihnp4,allegra,seismo}!cbmvax!daveh "Laws to supress tend to strengthen what they would prohibit. This is the fine point on which all the legal professions of history have based their job security." -Bene Gesserit Coda These opinions are my own, though for a small fee they may be yours too. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~