MaterialX: Unlit materials (single-output nodegraphs) don't work about three.js

[sunag]

@sunagAcho que isso deveria se tornar um MeshBasicNodeMaterial, certo?

Yes, that would be the most appropriate.

Wouldn't it be more useful to expose the nodegraphs as we do with materials?

[hybridherbst]

The main point why I opened this issue is that loading the nodegraph-only .mtlx I posted above should return a single unlit material, without me having to do anything extra.

A way to access individual nodes might also be useful in the future – some viewers allow „picking“ which node should be displayed as result – but I think that might be possible on the NodeMaterial already?

[hybridherbst]

@sunag would it be possible for you to take a look at this issue? I'm not quite sure what the right approach would be. Would be great to see unlit MaterialX support.