Undo bug while sculpting #82851

New Issue

Sergey · 2020-11-19T19:33:05+01:00

Sergey commented

2020-11-19 19:33:05 +01:00

System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: GeForce RTX 2070 SUPER/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 456.71

Blender Version
Broken: version: 2.92.0 Alpha, branch: master, commit date: 2020-11-19 16:19, hash: 72a199e148
Worked: (newest version of Blender that worked as expected)

Short description of error
When using undo during sculpting, both the last stroke and the last subdivision level are canceled at the same time.

Exact steps for others to reproduce the error
1 - With the default General scene, got to Sculpt Mode
2 - Add multiresolution
3 - Add a few levels of subdivision
4 - Make a stroke
5 - Press Ctrl+Z (nothing happens)
6 - Press Ctrl+Z again (Both stroke and add last subd level canceled)

The problem occurs only when you try to undo the first stroke after adding a subdivision layer

**System Information** Operating system: Windows-10-10.0.18362-SP0 64 Bits Graphics card: GeForce RTX 2070 SUPER/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 456.71 **Blender Version** Broken: version: 2.92.0 Alpha, branch: master, commit date: 2020-11-19 16:19, hash: `72a199e148` Worked: (newest version of Blender that worked as expected) **Short description of error** When using undo during sculpting, both the last stroke and the last subdivision level are canceled at the same time. **Exact steps for others to reproduce the error** 1 - With the default General scene, got to Sculpt Mode 2 - Add multiresolution 3 - Add a few levels of subdivision 4 - Make a stroke 5 - Press Ctrl+Z (nothing happens) 6 - Press Ctrl+Z again (Both stroke and add last subd level canceled) The problem occurs only when you try to undo the first stroke after adding a subdivision layer

Sergey commented

2020-11-19 19:33:05 +01:00

Added subscriber: @borschberry

TheRedWaxPolice commented

2020-11-19 20:31:53 +01:00

Added subscriber: @TheRedWaxPolice

TheRedWaxPolice commented

2020-11-19 20:31:53 +01:00

Yeah, I reported a similar issue here... #82388#1056677

Germano Cavalcante commented

2020-11-20 15:56:04 +01:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2020-11-20 15:56:04 +01:00

Changed status from 'Needs Triage' to: 'Confirmed'

Germano Cavalcante commented

2020-11-20 15:56:04 +01:00

I can confirm.

Bastien Montagne commented

2020-11-23 10:54:57 +01:00

Added subscriber: @mont29

Bastien Montagne self-assigned this 2020-11-23 10:54:57 +01:00

Bastien Montagne commented

2020-11-23 10:54:57 +01:00

@TheRedWaxPolice much better to have a new report, easier to keep track of things...

But indeed almost certainly same root issue as in #82388, will check.

@TheRedWaxPolice much better to have a new report, easier to keep track of things... But indeed almost certainly same root issue as in #82388, will check.

Bastien Montagne commented

2020-11-30 20:04:45 +01:00

OK, so don't think this is related to previous #82388 actually. Object and mesh do get re-read from memory as expected, yet the sculpt stroke remains visible.

Not sure what is going on here, not even sure how that is possible, since undoing (and re-reading object) should nuke all sculpting data. Could be related to how multires works... need more investigation work. :(

OK, so don't think this is related to previous #82388 actually. Object and mesh do get re-read from memory as expected, yet the sculpt stroke remains visible. Not sure what is going on here, not even sure how that is possible, since undoing (and re-reading object) should nuke all sculpting data. Could be related to how multires works... need more investigation work. :(

Gilberto Rodrigues commented

2020-12-06 03:33:26 +01:00

Added subscriber: @Gilberto.R

Gilberto Rodrigues commented

2020-12-06 03:33:26 +01:00

I think this could be related to my report. I also get multiple things undone at once, but in edit mode. https://developer.blender.org/T82991

Bastien Montagne commented

2020-12-15 18:44:29 +01:00

This is actually same issue as #82532: basically, first sculpt undo step will never be undone in current code (fact that it gets undone on redo is expected due to internal behavior of sculpt undo steps). New memfile undo does not cause any new issue here, it merely reveals existing ones, since it does not do a full complete re-read of the file data anymore, but typically only updates a few IDs.

See #83806.

This is actually same issue as #82532: basically, first sculpt undo step will never be undone in current code (fact that it gets undone on redo is expected due to internal behavior of sculpt undo steps). New memfile undo does not cause any new issue here, it merely reveals existing ones, since it does not do a full complete re-read of the file data anymore, but typically only updates a few IDs. See #83806.

Bastien Montagne commented

2020-12-30 14:29:10 +01:00

Closed as duplicate of #82532

Bastien Montagne closed this issue

2020-12-30 14:29:10 +01:00

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Undo bug while sculpting #82851