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Maniphest T81461

Weight paint crashing too often with blur brush + symmetry
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Description

System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: AMD Radeon RX 5700 XT ATI Technologies Inc. 4.5.13587 Core Profile Context 20.4.2 26.20.15029.27017

Blender Version
Broken: version: 2.91.0 Alpha, branch: master, commit date: 2020-09-29 22:41, hash: rBe5aa9decb23f
worked: I may be wrong but I think it started after the unified symmetry update.

Short description of error

My blender is crashing too often while blurring too many vertices at once in weight paint with vertex mirror on.

Exact steps for others to reproduce the error

-create a sphere, and subdivide it 3 times(in my testing its easier to get the bug with this, but its posible to get it with a much lower poly count)
-enter weight paint mode, paint a part of the sphere and blur it.
-try it again, but enable vertex Groups X symmetry

blender_system_info.txt18 KBDownload

blender_debug_output.txt1 KBDownload

Revisions and Commits

rB Blender
D9126rB084d911010fd Fix T81461: Weight paint crash with "Vertex Groups X Symmetry" option

Related Objects

Event Timeline

Diogo Valadares Reis dos Santos (DiogoX2) created this task.Oct 5 2020, 7:04 PM
Philipp Oeser (lichtwerk) changed the task status from Needs Triage to Needs Information from User.Oct 6 2020, 1:26 PM
Philipp Oeser (lichtwerk) added a subscriber: Philipp Oeser (lichtwerk).

For some reason, I cannot reproduce here.

Mind setting up a .blend file where this happens?

I may be wrong but I think it started after the unified symmetry update

Do you know which version this was introduced?

Diogo Valadares Reis dos Santos (DiogoX2) added a comment.Oct 6 2020, 2:36 PM

so I tried it with factory settings, both in 2.90.1 and yesterday's 2.91 commit. the crash only happened in the 2,.91

Mind setting up a .blend file where this happens?

bug test.blend5 MBDownload

just open the file and give it a big blur

Do you know which version this was introduced?

https://developer.blender.org/D8587

Philipp Oeser (lichtwerk) changed the task status from Needs Information from User to Needs Triage.Oct 6 2020, 2:47 PM
Philipp Oeser (lichtwerk) changed the task status from Needs Triage to Confirmed.Oct 6 2020, 3:00 PM
Philipp Oeser (lichtwerk) claimed this task.
Philipp Oeser (lichtwerk) added a project: Sculpt, Paint & Texture.
Philipp Oeser (lichtwerk) changed the subtype of this task from "Report" to "Bug".

Thx getting back, can confirm now, fix incoming...

Philipp Oeser (lichtwerk) added a revision: D9126: Fix T81461: Weight paint crash with "Vertex Groups X Symmetry" option.Oct 6 2020, 3:38 PM
Philipp Oeser (lichtwerk) added a project: Modeling.Oct 6 2020, 3:40 PM
Philipp Oeser (lichtwerk) closed this task as Resolved by committing rB084d911010fd: Fix T81461: Weight paint crash with "Vertex Groups X Symmetry" option.Oct 7 2020, 10:16 AM
Philipp Oeser (lichtwerk) added a commit: rB084d911010fd: Fix T81461: Weight paint crash with "Vertex Groups X Symmetry" option.