"Cavity" shader effect like Blender 2.8 viewport for Babylon.js?

[Evgeni_Popov]

I implemented the step 2, based on Blender sources:

https://playground.babylonjs.com/#YF8D42#1

I added the same two sliders than in Blender:

I did not implement the part which check that we don’t cross object boundaries (left as an exercice for the reader ;)), but it still does work well:

Without curvature	With curvature

[EDIT] Fixed the PG [/EDIT]