Bug 256175

Summary:	Onto blending mode
Product:	[Applications] krita	Reporter:	animtim
Component:	General	Assignee:	Krita Bugs <krita-bugs-null>
Status:	RESOLVED FIXED
Severity:	wishlist
Priority:	NOR
Version:	git master (please specify the git hash!)
Target Milestone:	---
Platform:	Compiled Sources
OS:	Linux
Latest Commit:		Version Fixed In:

Description animtim 2010-11-05 19:34:57 UTC

Version:           svn trunk (using KDE 4.5.1) 
OS:                Linux

I would like to have an "Onto" blending mode, to can use shapes and/or ordinary paint layer as mask.

( For instance in a layer group, setting the top layer with the picture to display to Onto mode, the layer(s) under is/are the mask(s)  )

Another way would be to have an Alpha blending mode, doing the opposite
( then in a layer group, the picture to display would be the last one, and layers above in Alpha blending mode would be the masks )

So having at least one of these modes would do the trick! (having both modes would be perfect ) 


For reference these blending modes exist in Synfig studio (you may take a look at their code to have an idea)

Reproducible: Always

Comment 1 animtim 2011-01-15 17:45:25 UTC

EDIT: Forget about the "alpha" one, it makes much less sense than the "Onto" one.

Comment 2 animtim 2011-05-18 13:36:25 UTC

Erase this one.
Not necessary anymore with the new alpha switch.