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From: cmr@cvedc.UUCP (Chesley Reyburn)
Newsgroups: comp.graphics
Subject: Re: Ray tracing and caustics.
Message-ID: <494@cathy.cvedc.UUCP>
Date: Sat, 11-Jul-87 12:07:10 EDT
Article-I.D.: cathy.494
Posted: Sat Jul 11 12:07:10 1987
Date-Received: Sun, 12-Jul-87 18:07:33 EDT
Reply-To: cmr@cvedc.UUCP (Chesley Reyburn)
Organization: Computervision, Beaverton, Oregon
Lines: 10

>why it looked less than real. There was something wrong with a transparent
>object in it. I had to refer to a *real* transparent object to figure out
>It has occurred to me that I have never seen such an effect in ray-traced
>texture map for each matte object it eventually falls on. Has anyone
>considered doing this?

Henri Matisse (among others) noticed this around 1890. This is (I beleive)
the entire basis for 'impressionism'.

cmr