"Brian Elliott" <bel### [at] gilcomau> wrote:
> Do you know of a way to "soften" a pigment function as used in an
> isosurface, that may reduce that gradient?  This one has a turbulent
> function like an agate in it.

I have also experimented with isosurfaces for terrain, and the conclusion I
came up with is that, where possible, you should first render a height
field of the object as that will run many times faster.  The downside is,
you won't have bumps sticking out horizontally (only vertically).  Still,
if you could find some way to first tesselate the object, you would save
yourself several days' worth of rendering time.

....Chambers

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