Microfacet GTR (GGX) mode help ??

[stevesideas]

Should this give similar results to Grant Warricks set up with multiple layers ? or is this not the same thing ?

Is there any help for GGX within vray ?

[vlado]

Should this give similar results to Grant Warricks set up with multiple layers ? or is this not the same thing ?

It's just a different glossiness model that some claim is closer to how many real-world materials behave, especially metals. Grant himself will probably be able to give you a more accurate answer with respect to his set up.

The "tail falloff" parameter allows you to control the shape of the highlights and at low values and low glossiness allows you to produce rim highlights such as might happen on cloth materials.

Best regards,
Vlado

[stevesideas]

Cheers Vlado. I'll ask Grant.