While looking at lots of different texture types from various games, i have come across some maps which i am not sure about. Sometimes the file name helps to determine the type, but some are just confusing. Examples below:
According to a material file this is supposed to be a specular map. The imagefile name says "RGB":
But then there's this one. The name says "Rim". What's a "Rim-Texture"?
And here's one from a completely different model. The filename says "Body_FX". What's this? A Specular map? Why is everything green?
Why are so many Specular maps b/w and some brightly colored? Can i just plug them in the Principled Shader or do they require special blending modes?