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Maniphest T87034

Bushing under the Displace modifier will change the primitive mesh
Confirmed, NormalPublicKNOWN ISSUE
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Description

System Information
Operating system: Windows-10-10.0.21343-SP0 64 Bits
Graphics card: GeForce RTX 3070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 461.92

Blender Version
Broken: version: 2.93.0 Alpha, branch: master, commit date: 2021-03-28 10:50, hash: rBe47f5cf1979d
Worked: (the newest version of Blender that worked as expected)

Short description of error

Under the replacement modifier, sculpting the object will add the effects of the replacement modifier to the brush

Exact steps for others to reproduce the error
step1:add modifier into the object as a Displace modifier
step2:In the Sculpt Mode, Bushing under the Displace modifier will change the primitive mesh

Bushing under the Displace modifier will be change premitive mesh .blend1 MBDownload

Related Objects

Event Timeline

william (18883234348) created this task.Mar 30 2021, 9:18 AM
Falk David (filedescriptor) updated the task description. (Show Details)Mar 30 2021, 1:43 PM
Falk David (filedescriptor) changed the task status from Needs Triage to Needs Information from User.Mar 30 2021, 1:49 PM
Falk David (filedescriptor) added a subscriber: Falk David (filedescriptor).

I am having a hard time understanding the problem. Sculpting will always change the original mesh unless you use something like the multiresolution modifier. If you want to "sculpt" the displacement then you would want to use texture painting on the displacement texture. Am I misunderstanding something?

william (18883234348) added a comment.Mar 30 2021, 6:45 PM

Thank you very much for answering my questions!!!!!
Add a Displace modifier to the original mesh. If you sculpt with this modifier in place, turn off the modifier and you will see the modifier marks on the location you sculpted.

Falk David (filedescriptor) changed the task status from Needs Information from User to Confirmed.Mar 30 2021, 7:00 PM
Falk David (filedescriptor) updated the task description. (Show Details)
Falk David (filedescriptor) added a project: Sculpt, Paint & Texture.

I see what you mean. When the modifier is active, the sculpting result is different from when the modifier is inactive. I think this is a bug, so I will confirm this.

Julien Kaspar (JulienKaspar) moved this task from Backlog to Bugs on the Sculpt, Paint & Texture board.Apr 20 2021, 12:57 PM
Julien Kaspar (JulienKaspar) moved this task from Bugs to Known Issues on the Sculpt, Paint & Texture board.May 11 2022, 9:45 AM
Julien Kaspar (JulienKaspar) changed the subtype of this task from "Report" to "Known Issue".
Julien Kaspar (JulienKaspar) added a subscriber: Julien Kaspar (JulienKaspar).

I'd tag this as a known issue. This is part of a bigger problem across all modifiers when entering sculpt mode. We still need a proper design to give the user the option to either sculpt on the original cage or modified geoemtry.

Julien Kaspar (JulienKaspar) mentioned this in T88665: Impossible to weight paint certain vertices.May 11 2022, 10:08 AM