"Slime" <noo### [at] hotmailcom> wrote...
> The following scene has a bunch of transparent spheres with media, but no> refraction, and it says "too many nested refracting objects" when it gets> about halfway through the image.
"no refraction" is a misnomer. Any transparent object is a refracting
object. It's just that the incident ray and refaction ray are collinear.
-Nathan