Heya, IDK any way to export this kind of custom behavior to GLTF, but here’s a simple material plugin you can play with that applies the mask while leveraging the existing PBR material. 
              
              
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          Heya, IDK any way to export this kind of custom behavior to GLTF, but here’s a simple material plugin you can play with that applies the mask while leveraging the existing PBR material. 