Le 2023-06-29 à 09:31, Chris R a écrit :

> closely at the code to make sure I didn't miss any and leave them with the
> default 1.0 ior, but I know for sure the varnish has an ior assigned from a
> table of ior values.
> 
Leaving the ior at 1.0 is very probably not your problem.
An ior 1 next to «air» effectively kill any fresnel reflection and 
should do the same for highlights based on the fresnel model.

If your varnish have an ior of 1, then, it don't contribute to anything 
having «fresnel» in it's definition.

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