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Maniphest T57653

Crash when i switch from edit mode to sculpt mode
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Description

System Information
Operating system and graphics card

Win 7
Quadro P2000

Blender Version
blender 2.80 alpha 2
hash b4dfe00fd60

Broken: (example: 2.69.7 4b206af, see splash screen)
Worked: (optional)

Short description of error

Exact steps for others to reproduce the error
Based on a (as simple as possible) attached .blend file with minimum amount of steps

With the default cube
create blend shapes and edit vertices
using the pie menu, switch back and forth from edit to sculpt mode
Blender crash quickly wht i do many switch

Revisions and Commits

rB Blender
rB8a92976254f3 Fix T57653: Fix T58075: Crash when switching between Edit and Sculpt/Paint…

Related Objects

Event Timeline

Francois Rimasson (ffrima) created this task.Nov 6 2018, 5:09 PM
Philipp Oeser (lichtwerk) lowered the priority of this task from 90 to 30.Nov 7 2018, 9:25 AM
Philipp Oeser (lichtwerk) added a subscriber: Philipp Oeser (lichtwerk).

Cannot reproduce here.

  • Does this also happen when you load File > Factory Settings?
  • Could you share your bledfile (so we are all on the same page)?
  • Does this also happen with the newset build from https://builder.blender.org/download?

Marking as incomplete until we have these tried...

Kinouti Takahiro (dskjal) added a subscriber: Kinouti Takahiro (dskjal).Nov 7 2018, 11:04 PM

I could reproduce the crash.

System Information
Win10 RX460

Blender Version
Blender 2.80 alpha2 32dca36afb1

Exact steps for others to reproduce the error

  1. Create shape key
  2. Set the value of shape key to 1
  3. Enter edit mode with pie menu
  4. Enter sculpt mode from edit mode with pie menu

This is a record.

Philipp Oeser (lichtwerk) added a comment.Nov 15 2018, 8:49 PM

Still cannot reproduce.
Is this still an issue with the latest buildbot build?

Kinouti Takahiro (dskjal) added a comment.Nov 15 2018, 9:20 PM

I could reproduce with latest( c94f806dc73 ) on Win10. But can not reproduce on Linux.

It also happens in the following way.

  1. Create shape key
  2. Set the value of shape key to 1
  3. Enter sculpt mode
  4. Hit tab many times
Philipp Oeser (lichtwerk) raised the priority of this task from 30 to 90.Nov 16 2018, 12:26 PM
Philipp Oeser (lichtwerk) edited projects, added Platform: Windows, BF Blender: 2.8; removed BF Blender.

Someone here on windows that can debug this?

Benjamin Humpherys (brhumphe) mentioned this in T58103: Crash when going from edit to sculpt mode while having vertices selected..Nov 28 2018, 2:25 AM
Benjamin Humpherys (brhumphe) added a subscriber: Benjamin Humpherys (brhumphe).Nov 28 2018, 4:17 AM
This comment was removed by Benjamin Humpherys (brhumphe).
Benjamin Humpherys (brhumphe) added a comment.Nov 28 2018, 5:11 AM

I was able to confirm this on windows 10 x64 2018-11-28 hash 4c6e7ef11f3

I've narrowed it down somewhat. The crash is triggered by the transition from edit mode to sculpt mode if one of the following is true:

  • The object has only a base key, OR
  • The object has a base key and any shape key with a nonzero value.

Other things:

  • It doesn't matter if the edit -> sculpt transition is done by changing tabs, using the drop-down menu, or the radial menu: all will cause Blender to crash.
  • It is triggered only by directly changing from edit mode to sculpt mode. Going sculpt->edit->another mode ->sculpt works fine.
  • You can change the value of the key from within sculpt mode and sculpt as normal whatever the value of the key without crashing.
  • If you sculpt on a key that is at 0.0, any changes will be immediately discarded. However, changing the key value to 0.001 or higher and the changes will stick.
Benjamin Humpherys (brhumphe) mentioned this in T58075: Crash on switching to vertex paint mode after going to the modeling workspace.Nov 28 2018, 5:28 AM

Related to this is T58075, which crashes under the same conditions (only one shape key, or one or more nonzero shape keys) when switching from edit mode to vertex paint mode.

Philipp Oeser (lichtwerk) added a comment.Nov 29 2018, 9:18 AM

Just a shot in the dark:
Does this also happen when blender is called from the commandline with the --threads 1 option?

Bastien Montagne (mont29) claimed this task.Nov 29 2018, 10:00 AM
Bastien Montagne (mont29) lowered the priority of this task from 90 to 50.
Bastien Montagne (mont29) added a subscriber: Bastien Montagne (mont29).

Could reproduce here with only one basis shape key.

Kinouti Takahiro (dskjal) added a comment.Nov 29 2018, 10:04 AM

I can reproduce the bug on 27cccaeccd2 with --threads 1 option.

But It can not reproduce with --debug option. Then terminal displays following errors in edit mode.

Pass : Edit Mesh Face Overlay Pass, Uniform 'viewportSize' not found!
Pass : Edit Mesh Face Overlay Pass, Uniform 'edgeScale' not found!
Pass : Edit Mesh Face Overlay Pass, Uniform 'dataBuffer' not found!

Bastien Montagne (mont29) changed the task status from Unknown Status to Resolved by committing rB8a92976254f3: Fix T57653: Fix T58075: Crash when switching between Edit and Sculpt/Paint….Nov 29 2018, 10:43 AM
Bastien Montagne (mont29) added a commit: rB8a92976254f3: Fix T57653: Fix T58075: Crash when switching between Edit and Sculpt/Paint….
Richard Antalik (ISS) mentioned this in T70534: crash when going from edit mode to vertex paint mode.Jan 14 2020, 1:04 PM