Unrelated (kinda), question. Have you been able to change the textures of gltf (.glb) 3d object with sceneCore. In a similar way of what possible with previous 3d/Ar libraries used in android with kotlin like Sceneform?:
What I want to do (example):
An sphere without a mapped texture, plain color. Add a .PNG image as a texture that will be displayed in the sphere 3d object