does anyone know how to export models from threejs editor that support the GLTF KHR_materials_pbrSpecularGlossiness extension?
I found that the THREEJS GLTFExporter supports the extension as well as the importer. However, I could not find how to export a 3D object from threejs editor that supports this extension KHR_materials_pbrSpecularGlossiness.
Background: I've created an object with a MeshPhysicalMaterial inside the threejs editor but whenever I export it to GLTF and import it into my app it has a MeshStandardMaterial. I do understand why it becomes a MeshStandardMaterial from looking at the code. However, I'm thinking that using the KHR_materials_pbrSpecularGlossiness extension I might get the importer to use another material.
Thanks for your help
If you import a glTF model in the editor that uses KHR_materials_pbrSpecularGlossiness, the respective glTF exporter will honor this setting and export the extension again. However, it's currently not possible to force the export to KHR_materials_pbrSpecularGlossiness. GLTFExporter does not provide an option for this.
If you require this feature, consider to make a feature request at github.
three.js R113
Thank you. Yes I would require that feature. Would you know any other 3D authoring tool that supports exports with the material extension?
Not that I am aware of. AFAIK, the exporter of bayblon.js actually converts
SpecularGlossinesstoMetallicRoughness.Substance Painter would be a good tool for this sort of thing, but isn't free.