Ken wrote:
> 
> "Jerome M. BERGER" wrote:
> 
> >         I haven't, but if I were to do one, I'd use a plane with a gradient
> > layered texture, like:
> 
> I would recommend a thin box instead of a plane because the bounding is more
> efficient and they render faster.
> 
	You're right, but then I would use a very *thick* hollow box instead
(btw the plane should be hollow too). It should be thick enough so that
the bottom edge is below everything in the scene. A thin box would
increase the trace level (and therefore the render time) a lot...

		Jerome

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