Mike Raiford <"m[raiford]!at"@gmail.com> wrote:
> Subsurface(<1,1,1>, <.9,.5,.1> 1.5)

Ah, yes... as with so many experimental features, this macro still lacks a
proper documentation:

What you're telling the macro to achieve here is come up with realistic material
properties for a 100% diffusely reflecting material. For this, the macro has
only one reasonable solution:

> subsurface {
> <100000000000000000.0000,100000000000000000.0000,100000000000000000.0000>,<
> 0.0000, 0.0000, 0.0000> }
> Parse Warning: Divide by zero.
> Parse Warning: Divide by zero.
> Parse Warning: Divide by zero.

But yes, of course! A material with mind-boggingly high scattering coefficient
and no absorption should do...

.... unfortunately, that screws the SSLT algorithm ;)

So better try something like <0.99,0.99,0.99> for the apparent color (which is
still atypically bright for any subsurface scattering material).

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