Warp <war### [at] tagpovrayorg> wrote:
>   I think a simple plane with a proper normal block would have resulted
> in a practically identical image but much faster.

Would the shading due to the caustics still be correct?

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' ;-)

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