Jpg-compression was not very friendly to the roughness of the mortar, but I
think, this one is big enough for a technical-study.
I wonder if it's worth to follow this path further (and which way to go),
cause this simple scene with aa 0.3 needed 22 m 19 s on my PII 450 MHz (with
some other stuff running as well). It's one isosurface, using the
brick-pattern as a function and Jeff Lee's technique to give the bricks
individual colours. The textures still needs a lot of work.

What do you think?

Marc-Hendrik

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