Thank you Bagginsbill.

I do remember your talk about adding some math operations to Lux. Truth to be told, addition and subtraction could have been dones otherwise, the Multimix texture could have been used instead.  I had to "sell" the addition of those operations to the Lux developers by virtue of the fact that having an Add and Subtract direct textures makes it a lot easier to write and debug materials than trying to use a Multimix "hack".

More can be done. Particularly I want to see how far we can push SLG. It is already very good in the lighting area, it just needs a few more refinements for the materials and it could become a great tool for fast, physically-accurate renders.

Cheers.

Paolo

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