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Why does this happen when I set a Comp texture?

Why does this happen when I set a Comp texture?


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The "COMP" texture for a ground material is not the same as the "COMP" for a model or effect. Models use ORM (occlusion, roughness, metallic) for it's channels.
The SDK describes the ground materials here: https://docs.flightsimulator.com/html/Developer_Mode/Material_Editor/Inspector_Menus.htm#NRM

Ground COMP channels:
red= metallic
green= x value of the normal (normal red channel)
blue= roughness
alpha= y value of the normal (normal green channel)
Thank you, this is very difficult and deep. For example, can I create my own customized textures? Is it possible to add a Grooving-like texture to the runway texture?