Closed princeku07 closed 11 months ago
I can't say for sure without more information, but perhaps your model uses the deprecated glTF extension, KHR_materials_pbrSpecularGlossiness
? Support has been removed in recent three.js versions, if so. To upgrade your model to the metal/rough PBR workflow, see:
https://www.donmccurdy.com/2022/11/28/converting-gltf-pbr-materials-from-specgloss-to-metalrough/.
but there is one more gltf-viewer which also uses three js