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roughness & dispersion_coefficient_B
Posted: Tue Dec 06, 2011 9:14 pm
by t_3
does anybody know what unit or parameter the roughness value is in? beeing a physically correct renderer
i expect something like R
zDIN, R
a, R
tm?
and, by the way, has anyone a resource or practical description how the dispersion coefficient B is to handle? have read in the wikipedia about dispersion but don't really know how to make use of it...
Re: roughness & dispersion_coefficient_B
Posted: Sat Dec 24, 2011 4:59 am
by t_3
so the silence leads to an answer like "no one"?
well, meanwhile i have compiled a list of gemstones/minerals together with their ior and dispersion values:
http://dl.dropbox.com/u/10375307/IOR_Di ... Values.pdf
have fun with these (and make them gems glow)...
Re: roughness & dispersion_coefficient_B
Posted: Sat Dec 24, 2011 9:14 am
by gabrielefx
t_3 wrote:does anybody know, what unit or parameter the roughness value is in? beeing a physically correct renderer
i expect something like R
zDIN, R
a, R
tm?
and, by the way, has anyone a resource or practical description how the dispersion coefficient B is to handle? have read in the wikipedia about dispersion but don't really know how to make use of it...
dispersion in many rendering softwares is called Abbe...If I remember well...
would be nice if Octane have the possibility to load ior files like Maxwell.