Rendering a separate ink lines pass for Grease Pencil is easy but the procedure isn’t obvious, as Blender doesn’t have a checkbox for it in the layer pass settings. So, here’s a quick demo on how to set the render up, do a multipass render, and combine them in Photoshop.

This also works if you’re doing post in After Effects, Resolve, etc – but for demo purposes, I’m keeping it simple.

Link: OpenEXR plugin for Photoshop & AfterEffects: http://www.fnordware.com/ProEXR/