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From: jdudeck@polyslo.CalPoly.EDU (John R. Dudeck)
Newsgroups: comp.binaries.ibm.pc.d
Subject: Re: Ray Tracer for MS-DOS: Wanted
Message-ID: <26f1824b.247@petunia.CalPoly.EDU>
Date: 15 Sep 90 01:22:19 GMT
References: <29480@netnews.upenn.edu> <1030004@hpmwdjm.HP.COM>
Organization: Cal Poly State Univ,CSC Dept,San Luis Obispo,CA 93407
Lines: 23



In an article davem@hpmwtd.HP.COM (Dave McQuate) wrote:
>
>Directory PD1:<MSDOS.GRAPHICS>
>DBWRENDR.ZIP  B  263680  900403  Ray tracing graphics pgm. v1.02 (MCGA/VGA req)
>
>(I have no experience with any of these.)
I have tried this program, and it works!  It is relatively slow, and needs
a math chip (I believe) to get very far.  You need at least an hour with 
an 8 mhz 287 chip to get any kind of results at 320x200.  To get full
resolution it can take several hours.  It generates 12 bit color, then
maps it to VGA.  Setting up an image is done by defining all its elements
in a text file, then letting it run.  You don't see the results until it
has processed the file.  But you can set a maximum processing time per
scan line, which lets you get a feel for the layout of the elements of the
image before actually running it at full resolution.


-- 
John Dudeck                                 "I always ask them, How well do
jdudeck@Polyslo.CalPoly.Edu                            you want it tested?"
ESL: 62013975 Tel: 805-545-9549                               -- D. Stearns