2025-01-06 Grease Pencil Module Meeting

[filedescriptor]

Date/Time: 2025-01-06T15:00:00Z
Link: https://meet.google.com/xxo-tyin-rem

Attendees:

• Antonio Vazquez (Developer)
• Casey Bianco-Davis (Developer)
• Daniel Martinez Lara (Grease Pencil team)
• Falk David (Blender)
• Iliya Katushenock (Developer)
• Lukas Tönne (Blender)
• Wu Yiming (Blender)

Topics

• Development updates
• Discussions

Meeting Notes

• Development updates
  • Some fixes for high-severity issues landed before the holiday break. Not much else landed during the holidays.
  • Focus is still on getting the high-severity issues fixed (at the time of writing there are 19).
  • The Winter of Quality project is still ongoing until the end of the month.

Show all commits

• Fix #132480: Grease Pencil: Length modifier early return on empty filter by YimingWu
• Fix #132377: Grease Pencil: Toolbar color does not change in context menu by Pratik Borhade
• Fix #131738: Grease Pencil: Use correct textures in acquire_resources. by YimingWu
• Fix #132117: Grease Pencil: Material slots display logic fix by YimingWu
• Fix #130708: Grease Pencil: Cannot transform strokes with individual origin pivot by Pratik Borhade
• Fix #131745: Grease Pencil: Removing vertex group hits assert by Pratik Borhade
• Fix #131889: Grease Pencil: Select stroke by material fails with points by Pratik Borhade
• Fix #124937: Grease Pencil: Change Shear tool icon to match Blender 4.2 by dupoxy
• Fix #132027: Grease Pencil: Skip locked layers in frame operation by Pratik Borhade
• Object: Conversion of Font/Legacy curves to Curves and Grease Pencil by YimingWu
• Fix: Grease Pencil: Undefined truncation behavior in legacy conversion by Falk David
• Grease Pencil: Python: Expose layer group color tag as RNA property by Pratik Borhade

• Discussions
  • Layers that are not visible are still evaluated.
    • Issue: This means for example that in geometry nodes curves that are converted to a mesh would still render.
    • Falk: A connected problem is that Grease Pencil layers have one toggle both for “not visible” and “disabled”. This is similar to the checkbox for collections, but importantly, different from the visibility toggle for objects.
    • Idea: Don’t use the default id_copy for Grease Pencil evaluation. Build a Grease Pencil that contains only what should be evaluated (drawings that are visible on the current frame).
    • Falk will write this into a task/PR and ask for feedback from other devs.
  • Shape Design
    • Casey: Doesn’t think that having a is_hole attribute is a good idea. Thinks that “holes” should be derived runtime data.
    • There was a back and forth about this topic. On the one hand, it’s good to have this as “automatic” as possible, but on the other hand it might lead to cases where users don’t have enough control over what is a hole and what not.
    • Falk: For now (in the prototype), keep it automatic (no hole attribute). It seems like this is still something that could be turned into an attribute later. Wants to talk to other devs about this some more.

Next Meeting

• Time/Date: 2025-01-20T15:00:00Z