Arnold: PowerMetal

We are designing a new Rombo.PowerMetal material. At the moment it supports STD generalized distribution for microfaceting reflections, microfacet normal mapping, multi-bounce microfaceting for correct energy conservation and rombo adaptive sampling for hard to sample highlights. STD distribution allow for both GGX(reflection slope set to 2) and Beckmann(set to 4) distributions and goes further on[…]