I’m in love with this shader. I don’t know if the guy who wrote it used it anywhere… anyway… is it ethically ok to ask you to take a closer look, and try together to take it apart? I mean to think how to achieve such effect.
so for now I’ll just ask is it ok to post such question.
Personally i don’t see an ethical dilemma in trying to work out how a shader works. Obviously verbatim copying code violates copyright etc. I suppose there could be other ip protections around it e.g. patents etc but this is quite unlikely.
In any case, is this kind of similar to what you are looking for?
Thank you. I was trying to achieve something like that… cause i didn’t know the key words: cross-hatching.
and I have some ideas for the wobbling 
we’ll see.
The shading / wobbly line stuff is all fairly straightforward. Hatching textures that are either in screen space or object UV space. Lighting is the usual dot product with controls for adjusting the threshold and scale, with optional stepping.
The sketchy effect is done by handling the outline and interior coloring separately, with optional vertex displacement noise for both. Plus additionally the hashing texture can be offset or changed each frame, and I suspect the threshold can be affected by the per vertex noise as well.
yep, very competent use of typical cel shading effect
Thank you all. I’ll try to struggle with this late. I don’t have time now. 