How do I set roughness in the viewer?

[TruPhnxKng]

How do I set roughness in the viewer? I'm uploading cell shaded models and they are so shinny they look like porcelain.

I just want to know the line of code needed to make the texture rougher.

[elalish]

Ideally you set the roughness when you export the glTF - the default is 1 (fully rough), so if yours are shiny something is intentionally setting it to a different value. You can fix it in our editor, or if you really need to you can use our material API: mv.model.materials[0].pbrMetallicRoughness.setRoughnessFactor(1); https://modelviewer.dev/examples/scenegraph/#pickMaterialExample