Roughness map breaking when used on skinned wings

[valentin-rosset]

I've got a problem with the roughness map i'm using for the wings of my pterosaur.

Some artifacts are appearing on the wing when it deforms during the flying animation, I've tried to unplug my roughness map from the material and the artefacts disappeared.

As you can see, it only happens when the topology of the wings are distorted, in T pose there is not that problem.

The wing is made out of a thin membrane with some thickness, there is almost no interpenetration of the topology through itself.

Have you got any idea of where the problem could came from ?

      

[hamsterHamster]

Thickness? Check for self-penetration, might be unrelated to shading.

[valentin-rosset]

As i've said, the wings have almost no self penetration and the few small areas that have it don't seem to be affected by the roughness problem

[hamsterHamster]

Impossible to tell without seeing model, textures and render settings. Post zipped MA, at least the model.

[valentin-rosset · Accepted solution]

I found the solution, turning the wings into smooth mesh preview did the trick, i think i didn't had enough polygons for the map to work properly.