Sculpting with dyntopo using undo causes artifacts or hides random faces #80174
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Reference: blender/blender#80174
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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: after face sets implementation
Tested in 2.91.0 Alpha, branch: master, commit date: 2020-08-28 00:49, hash:
5ee60c9815Short description of error
When sculpting with dyntopo if you undo sometimes part of the mesh simply dissappear.
Exact steps for others to reproduce the error
If you make it in the right way you can get it everytime
bug (2).blend
You can make the geometry re-appear by leaving sculpt mode. Once you go back, note that the geometry that was hidden is now a face set.
I think it may be related to https://developer.blender.org/T74637
Added subscriber: @Diogo_Valadares
#94503 was marked as duplicate of this issue
#91753 was marked as duplicate of this issue
#89640 was marked as duplicate of this issue
#88119 was marked as duplicate of this issue
#85989 was marked as duplicate of this issue
#80245 was marked as duplicate of this issue
#77974 was marked as duplicate of this issue
Added subscriber: @iss
Changed status from 'Needs Triage' to: 'Needs User Info'
Does this happen with development builds? https://builder.blender.org/download/
yes it does, I think it happens more easily whenever you add a lot of geometry and undo it.
I managed to do it consistenly. ill update the description of the bug
Changed status from 'Needs User Info' to: 'Needs Triage'
Added subscriber: @Foaly
Related:
#77974
#75846
I was able to reproduce this issue, so I will merge #77974 to this report. Steps are nearly identical.
I will remove "enter sculpt mode and enable dyntopo" step, because it is already done in file and therefore not necessary to reproduce.
Changed status from 'Needs Triage' to: 'Confirmed'
Added subscribers: @aallen170, @ankitm
Added subscriber: @Thane5
Added subscribers: @rahulmishra, @TheRedWaxPolice, @leose, @filedescriptor
Added subscriber: @Naoki
Added subscribers: @SaifYusufJ, @PratikPB2123
Added subscribers: @TimmSchwarze, @Garek
Added subscriber: @Vyach
2.93.4, fresh 3.0 Alpha — same issue.
Added subscriber: @Dmitry-25
When sculpting with dyntopo using undo hides random parts of the geometryto Sculpting with dyntopo using undo causes artifacts or hides random facesAdded subscriber: @jordanm
Added subscriber: @RedMser
Added subscribers: @JosephEagar, @JulienKaspar
I'll tag this as a bug but with planned refactors from @JosephEagar to preserve face sets while using dyntopo this would be fixed.
This is a memory corruption bug.
This issue was referenced by
b54abd7edeChanged status from 'Confirmed' to: 'Resolved'