I'm working on a project where we're using 3d lighting in Unity combined with normal maps to add lighting to our sprites. However, generating these maps with Photoshop gets smooth, uniform results - you can't get a cel-shaded pixel-art aesthetic out of this.
One solution I found was SpriteLamp (http://www.snakehillgames.com/spritelamp/), which is able to generate normal maps based off multiple lightmaps - however, creating these lightmaps for animated sprites (and an entire game) would be extremely labour intensive.
As such, I'm putting forward the idea of adding the functionality to render directional normal/light maps in Spritestack. Whether just lightmaps to plug into Spritelamp, or outright normal maps, this would be an awesome feature to have, if a bit niche!
Sure. I don't see any obstacle to add normal maps when exporting a sprite. Marking as TBD
Awesome! Cheers.