Bill Pragnell wrote:
> Would the shading due to the caustics still be correct?

  Why wouldn't it?

> In any case, using an isosurface instead of a plane didn't slow it down that
> much. And I just can't help thinking of normals as 'cheating' ;-)

  Everything is "cheating" in rendering. It's just smart to use the
cheats which will produce the same results faster.

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