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Substance Designer - Technical Support - Re: Fresnel/IOR/Falloff
on: September 19, 2014, 08:08:05 pm
If I'm correct, i believe this is not possible, unless you're going to implement your own custom shader.
The theory behind PBR materials (at least the one used by game engines), is that you don't really specify a fresnel curve: basically it is the specular value that drives two hard-coded fresnel equations.
For example, Marmoset is setup this way:
The theory behind PBR materials (at least the one used by game engines), is that you don't really specify a fresnel curve: basically it is the specular value that drives two hard-coded fresnel equations.
For example, Marmoset is setup this way:
- When specular = 0 then the fresnel curve is the one of a rubber material
- When specular = 1 then the fresnel curve is the one of a chrome material