3 PBR questions. My understanding is that there are 2 types of PBR material workflows. Those using SpecGloss and those using MetallicRoughness.
However in the PBR MAT there are slots for both Specular and Metallic and Roughness.
Is there a reason or scenario when you might want to have all slots defined? Or if you are defining a Specular Level Map should you leave Metallic and Roughness undefined?
If you have both albedo AND diffuse maps should you use albedo with PBR materials?
If you have a gloss map where would that be slotted, Roughness or?