Now we need a comparison of the same materials with falloff map instead...
It´s still a bit hard to tell, I feel like the GGX approach looks better, because a falloff map distributes the "dust" too evenly, thus making it look a bit more "CG".
Adding in some grungy texture to controll the "dust" look, would certainly help even more with realism.

It´s still a bit hard to tell, I feel like the GGX approach looks better, because a falloff map distributes the "dust" too evenly, thus making it look a bit more "CG".
Adding in some grungy texture to controll the "dust" look, would certainly help even more with realism.
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