Holes in mesh

[Bketting]

Creating glb with obj2gltf results in a mesh with holes (see photo below, in model-viewer).

Obj looks fine in 3D editting software. Two tricks solved the problem:

1. Setting hard edges before glb creation
2. Creating glb with online converters

The problem persisted in multiple viewers.

Any thoughts on what is going wrong?

[entriphy]

I have the same issue with some models. The face is technically still there, just that it's not facing the right direction. It seems to be a problem in the checkWindingCorrect function. It could also be a problem with incorrect normals in the model itself, since a normal is used in the calculation of checkWindingCorrect.