Maniphest T61633

Grease Pencil: Aliasing in viewport and render when GP objects share the same Y location.
Closed, Duplicate
Actions

Assigned To
None
Authored By
Tomasz Kaye (bitbutter)
Feb 17 2019, 12:06 PM
Tags
  • BF Blender
  • Tracker Curfew
  • Grease Pencil
Subscribers
Antonio Vazquez (antoniov)
Sebastian Parborg (zeddb)
Tomasz Kaye (bitbutter)

Description

System Information
Operating system: OSX 10.11.6
Graphics card: NVIDIA GeForce GT 650M 1024 MB

Blender Version
Broken: blender-2.80.0-git20190215.faa255c0a4e4-x86_64

Short description of error

When two Grease Pencil objects share the same Y location aliasing appears where lines/strokes from the different objects intersect in the viewport and in renders. Shifting the Y location of one of the Grease Pencil objects makes the aliasing go away.

Exact steps for others to reproduce the error
See attached .blend file to see aliasing where the strokes cross.

aliasingbug.blend720 KBDownload

Event Timeline

Tomasz Kaye (bitbutter) created this task.Feb 17 2019, 12:06 PM
Sebastian Parborg (zeddb) assigned this task to Antonio Vazquez (antoniov).Feb 18 2019, 1:34 PM
Sebastian Parborg (zeddb) lowered the priority of this task from 90 to 50.
Sebastian Parborg (zeddb) added subscribers: Antonio Vazquez (antoniov), Sebastian Parborg (zeddb).

I think that this is just a limitation of how we draw GP strokes.
But I'm asking @Antonio Vazquez (antoniov) to confirm first.

Antonio Vazquez (antoniov) added a comment.Feb 18 2019, 2:08 PM

Yes, this is a limitation of the current version. We would like to improve it, but not easy solution found yet.

Dalai Felinto (dfelinto) removed Antonio Vazquez (antoniov) as the assignee of this task.Dec 23 2019, 4:35 PM
Dalai Felinto (dfelinto) added a project: Tracker Curfew.
Richard Antalik (ISS) added a project: Grease Pencil.Jan 24 2020, 11:51 AM
Antonio Vazquez (antoniov) added a comment.Jan 24 2020, 7:24 PM

This is fixed in the greasepencil-refactor branch.

Antonio Vazquez (antoniov) closed this task as a duplicate of T66293: GPencil: Redesign Blend modes and cleanup Drawing Engine.Jan 24 2020, 7:24 PM