Page MenuHome
Create Task
Maniphest T83119

The application crashes (vanishes) when a topology mirror (or at least an X topology mirror) needs to move a hidden vertex.
Closed, ResolvedPublic
Actions

Description

System Information
Operating system: Windows 10 Pro
Graphics card: nVidia 1060

Blender Version
Broken: 2.90.1, 2.91.0, 2.92.0
Worked: 2.83.9

Summary:
The application crashes (vanishes) when a topology mirror (or at least an X topology mirror) needs to move a hidden vertex.

Details:
Open the attached bend file and press "G". Key points are that the monkey has a topology mirror on the x-axis and the opposite vertex is hidden. I don't think you even have to move the mouse.

To create this file I did the following:

  • Delete the default cube
  • Add monkey and select it
  • Go into edit mode
  • In the tool settings, expand "Options" and select Mirror "X" and "Topology Mirror". I think you need both.
  • Hide the vertices in the left-hand half to the monkey.
  • Select one of the vertices that is still visible.

It is at this point that hitting "G" will cause the crash.

Please let me know if you need more information.

Crash move hidden vertex.blend789 KBDownload

Revisions and Commits

rB Blender
D9673rBda8dc204bd06 Fix T83119: Crash with topology mirror affecting a hidden vertex

Related Objects

Event Timeline

Andrew Pollard (AndrewJP) created this task.Nov 27 2020, 5:41 PM
Andrew Pollard (AndrewJP) updated the task description. (Show Details)Nov 27 2020, 5:43 PM
Robert Guetzkow (rjg) changed the task status from Needs Triage to Confirmed.Nov 27 2020, 7:16 PM
Robert Guetzkow (rjg) updated the task description. (Show Details)
Robert Guetzkow (rjg) added a project: Modeling.
Robert Guetzkow (rjg) added a subscriber: Robert Guetzkow (rjg).

I can confirm the crash in Blender 2.92, 2.91 and 2.90.1.

copy_v3_v3(float * r, const float * a) Line 63	C
transform_apply_to_mirror(TransInfo * t) Line 1549	C
recalcData_mesh(TransInfo * t) Line 1576	C
recalcData(TransInfo * t) Line 1534	C
applyTranslation(TransInfo * t, const int * UNUSED_mval) Line 426	C
transformApply(bContext * C, TransInfo * t) Line 1910	C
transform_modal(bContext * C, wmOperator * op, const wmEvent * event) Line 443	C
wm_handler_operator_call(bContext * C, ListBase * handlers, wmEventHandler * handler_base, wmEvent * event, PointerRNA * properties, const unsigned char * kmi_idname) Line 2043	C
wm_handlers_do_intern(bContext * C, wmEvent * event, ListBase * handlers) Line 2824	C
wm_handlers_do(bContext * C, wmEvent * event, ListBase * handlers) Line 2872	C
wm_event_do_handlers(bContext * C) Line 3295	C
WM_main(bContext * C) Line 638	C
main(int argc, const unsigned char * * UNUSED_argv_c) Line 526	C
Robert Guetzkow (rjg) updated the task description. (Show Details)Nov 27 2020, 7:16 PM

Similar issues we had in the past was T66683.

Robert Guetzkow (rjg) mentioned this in T82993: Crash when Editing a mesh with Topology Mirror and Proporional editing options.Nov 27 2020, 7:18 PM
Philipp Oeser (lichtwerk) claimed this task.Nov 30 2020, 3:19 PM
Philipp Oeser (lichtwerk) added a subscriber: Philipp Oeser (lichtwerk).

This is caused by rBba97da21acf2: Transform: Simplify and rearrange mirror code, will check.

Philipp Oeser (lichtwerk) added a revision: D9673: Fix T83119: Crash with topology mirror affecting a hidden vertex.Nov 30 2020, 4:54 PM
Philipp Oeser (lichtwerk) closed this task as Resolved by committing rBda8dc204bd06: Fix T83119: Crash with topology mirror affecting a hidden vertex.Dec 2 2020, 12:40 PM
Philipp Oeser (lichtwerk) added a commit: rBda8dc204bd06: Fix T83119: Crash with topology mirror affecting a hidden vertex.