Gilles Tran wrote:
> 
This skin shader seems to add more realism to the image than usual
finish. Now I have more interest in developing next version of shader
patch :-)

If someone is more interested in skin shader, then number of comparative
renderings were performed and posted in c.g.r.r. newsgroup (last r
stands for RenderMan and renderings were performed with RenderMan
compatible renderers, mostly BMRT, IIRC). Name of one of the threads was
"Skin Shaders. Any suggestions." from August/September this year. There
was posted number of links for theory of such shaders as well. Here is
excerpt from Matt Pharr's post:
====================================
You might want to start by reading Pat Hanrahan and Wolfgang Krueger's
paper, "Reflection from Layered Surfaces Due to Subsurface Scattering",
http://graphics.stanford.EDU/papers/subsurface/.  In addition to lots of
nice theory and real-world data about scattering from biological stuff
like
skin and leaves, there's a lot of useful phenomenological information
about
how skin scatters light.  If you liked that paper, you might also want
to
check out http://graphics.stanford.edu/papers/scatteringeqns, which
gives
some more efficient ways of computing scattering like this.

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