How to convert IOR to F0 in Substance Designer

How to convert IOR to F0 in Substance Designer

And how do you calculate IOR of two blended material and layering material

You would probably get a better support with Designer on Substance forums.

But, who knows, maybe someone has some ideas :man_shrugging:

Math answer ior = -[f0 + 1 + 2*sqrt(f0)] / (f0 - 1)

A good and nice explanation with F0 Values for common materias from allego must-read pbr guide

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I was asking in that before but no one answer me so i ask here

Thanks for the math. but i want to implement to substance

so if the IOR input get converted to be F0 output