Possible misconception about the layer sketch to blue feature

[novames00]

This is a note about the posts :

Layer sketch to blue, for inking over it

Hey, here is a simple mockup for a feature I’m discussed with @dkazakov , @tiar and @wolthera on IRC a month ago. @dkazakov mailed me in PM to get more info about it. I thought then opening a thread here would be better to share with other users and also collect all information and my showcase my mockup for a proposal. Comments, enhancements of the mockups, ideas are welcome! 1) Context: after a simple sketch: User scribble a sketch on a paint layer (or on many paint-layers for character, back…

And :

Layer sketch to blue - update

Hi, just following up from the previously completed feature request thread. The new Tint blend mode has been merged to master (thanks @dkazakov). The next enhancement we wanted to do was to make the preferred blend modes more prominent in the UI when used with the Fast Color Overlay filter. Here’s my suggestion for the enhanced config widget: [image] Normal mode is the default and will be preselected when the filter mask is first added. Tint mode can be quickly selected to work with scans o…

@YRH, @Deevad, @Deif_Lou , @Michelist, @tiar

Guys. Forget about any complicated blending mode.
You might have thought about it the inaccurate way.

The sketch layer to blue feature in CSP, functions exactly like an ultra fast, no-delay gradient map.
No blending mode involved. If anything the blending mode is normal.

In CSP, the layer color properties function as follow :

• layer color : darkest pixel color map
• sub color : brightest pixel color map

No blending mode is necessary.

But now the question is, did it help at all after all the back and forths in the previous
discussions?

[YRH]

Hi, did you try the feature yourself yet? You can access it with a Krita Next Nightly build.

I’m sure it’s been explained somewhere in the older threads, but just to recap quickly here, this is implemented as a Filter Mask and does not change the blending mode of the sketch layer. The sketch turns blue and remains as Normal blend mode and you can then use another mode if needed, it is all composed as expected.

As for why this is not a gradient – the color overlay mask implementation is actually the fastest for Krita. If you need something more advanced, you still have an option to do so. For example, there’s a Tint mode for layers with a white background.

If you need a CSP-like behavior, then you can add a Filter Mask with Gradient Map, and this is already present in release Krita versions. You can have a two-color map, or go wild and even add more color stops So Krita is very flexible here.

Regarding whether anything can be changed now, I’m not sure. I think the dev team is fast approaching a pre-release code freeze date (based on the info from the mailing list).

[novames00]

Right. But as a filter mask, it hinders performance you see.
A solution with no delay as the layer data gets updated to register more pixels
would be neat. I do not think that is the case yet in any “Krita next” build.

And I am already aware that Krita possesses gradient maps.

[raghukamath]

@novames00

But as a filter mask, it hinders performance you see.

That is the issue with all filter masks that need to be solved. I think we need to ask for better and faster processing of filters and transform masks. I think I have read some bug for this.

[novames00]

hmmm

[tiar]

@novames00

Right. But as a filter mask, it hinders performance you see.

It wouldn’t be possible to have a conditional blending mode, where you can select the colors. You can make something similar to a blending mode, like @Drawpile has, which could be faster, but even then it’s not a true blending mode but it’s own feature, due to the conditionality.