1
$\begingroup$

does anyone know how to paint (and animate) a mask within the new Grease Pencil (Blender 2.8) ?

I guess that it should be possible to either define a Grease Pencil layer as mask; or to use an holdout material or something ?

Thanks !

$\endgroup$
1
$\begingroup$

Using Subtract as a Blend mode for a Grease Pencil layer acts just like a mask:

enter image description here

Subtracted layers will act as holdout for every other layer that is listed below them, but regardless of their view-depth (layers in front are masked out too). Layers in other GP objects are not affected

enter image description here

$\endgroup$
4
  • $\begingroup$ Seems perfect but it is not working here (2.8 beta), don't know why ? I use a black material like you, my GP layer blend mode is set to "substract" too. And I get this : imgur.com/a/rM5Rxky $\endgroup$ – gordie Dec 27 '18 at 17:49
  • $\begingroup$ is it the top layer and in the same object? it should work.. keep in mind the feature was added in the last month so you need an updated beta $\endgroup$ – Nicola Sap Dec 27 '18 at 17:59
  • $\begingroup$ Got the last nighlty. Maybe you need a background color for this to work ? (not working on transparent) ? $\endgroup$ – gordie Jan 2 '19 at 17:34
  • $\begingroup$ The contents of a subtract layer become visible wherever they don't overlay with the contents of other layers. This is quite different from the behaviour of masks in other graphics/animation software. Is there any way to have the contents of a masking layer be invisible in all cases, but still mask other layers when they overlap? $\endgroup$ – bitbutter Apr 18 '19 at 11:30

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.