Currently, MCprep's shader graph only supports grayscale specular maps in resource packs, which are used as gloss maps. Other properties, like metalness and emission, are instead applied on a per-bloc…
Inspired by an [article](http://blog.stephencleary.com/2013/01/async-oop-2-constructors.html) on async initialization:
> It would be useful to be able to use `await` in a constructor, but this would …