Whenever a material function has multiple outputs, it appears the MF thumbnail in the content browser is stuck on a texture output preview. I cannot change the thumbnail to reflect the primary output. It’s stuck on the texture output.
It appears that the MF thumbnail generates from the last placed Function output node. To “regenerate” or alter the MF thumbnail, delete the Function Output node you wish to use as the thumbnail and replace it in the graph. This is as easy as:
- Select the Function Output node
- Copy
- Delete
- Paste and rehook
The MF Thumbnail will regenerate in the content browser.