We have a bunch of .obj/.mtl 3D models. We converted them to gltf and .glb (binary version) using this khronos gLTF conversion tool (recommended on their site) : https://github.com/AnalyticalGraphicsInc/obj2gltf
We wanted to upload the resulting gltf files and run a research project (precisely a user study) .
short story: The problem is that the uploaded .gltf file whether .gltf or .glb + textures converted from the tool produce on Sketchfab a distorted mesh (image below) why?
We should mention that the model is rendered perfectly when using Babylon JS Sandbox & Three JS loaders but why the problem with Sketchfab ?
Should it have the same structure as the format that Sketchfab export meaning a ‘textures’ folder + scene.bin + scene.gltf? If that is the case, how can we convert the minified version (object.gltf + textures files without a .bin file) to the structure that Sketchfab uses?
Just as an example on Babylon JS sandbox the model looks good
Thank you for any suggestions.