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Obj2Gltf doesn't always convert materials
See original GitHub issueI’ve spent some time trying to get this library to use the proper materials in the glTF files it creates, without success. I decided to do a sanity check and attempt to use Obj2Gltf to convert a .obj created with this library to glTF and see if materials were imported. To my surprise, they were not.
Every OBJ viewer I have tried loads the materials properly. The materials, in this case, are just some colors, and not any textures. The materials are stored in a .mtl file with the same basename and path as the .obj file.
If you would like the files I am using, please let me know.
Issue Analytics
- State:
- Created 5 years ago
- Comments:12 (6 by maintainers)
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There’s the
KHR_materials_commonextension. It was originally only defined for glTF 1.0. I thought there are also efforts for creating something similar for glTF 2.0, but couldn’t find it in the meeting agendas right now. In any case, there are currently some other, related extensions (mainlyKHR_lights) that are currently being sorted out.Leaving the issue open until the MTL-to-glTF-PBR translation is extended to at least a “more reasonable” state is fine. I hope that I can allocate some more time for this soon…
A very basic extension of the translation from MTL to PBR was done in https://github.com/javagl/JglTF/commit/2470c78a2e3218f383db803a33829746cdff6ba9 . It will have to be extended after the extended MTL support is part of a released version of the OBJ library.