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Maniphest T79325

[2.90.0 Beta] Sculpt in Multires gets slow after rebuild BVH.
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Description

System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: GeForce GTX 1080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 451.67

Blender Version
Broken: version: 2.90.0 Beta, branch: master, commit date: 2020-07-23 18:40, hash: rB9cbf43801ba2

Short description of error
Sculpt in Multires gets slow and laggy after rebuild BVH , need to de-zoom and re-zoom in order to get a proper behavior.
Sometimes also had the issue after undo.
Using draw brush and Multires is set to level 6 in sculpt mode.

Exact steps for others to reproduce the error
1 - Go to sculpt mode
2 - Select Draw brush
3 - Zoom to a specific area
4 - Sculpt 3/4 strokes
5 - Go to Sculpt tab > Rebuild BVH
6 - Sculpt 3/4 strokes

https://www.dropbox.com/s/luksg8addohb3fn/Blender290betaMultiresIssue.blend?dl=0
https://www.dropbox.com/s/ljifvhi5yzr7ihx/Blender290betaMultiresIssue.mp4?dl=0

Related Objects

Event Timeline

AntoineR (S_Jockey) created this task.Jul 27 2020, 5:55 PM
AntoineR (S_Jockey) edited projects, added BF Blender (2.90); removed BF Blender.
AntoineR (S_Jockey) renamed this task from [2.90.0 Beta] Sculpt in Multires get slow after rebuild BVH. to [2.90.0 Beta] Sculpt in Multires gets slow after rebuild BVH. .Jul 27 2020, 5:59 PM
Pablo Dobarro (pablodp606) added a subscriber: Pablo Dobarro (pablodp606).Jul 27 2020, 5:59 PM

Does this also happen when the "Delay viewport updates" option is enabled?

AntoineR (S_Jockey) updated the task description. (Show Details)Jul 27 2020, 5:59 PM
AntoineR (S_Jockey) added a comment.Jul 27 2020, 8:09 PM
In T79325#986086, @Pablo Dobarro (pablodp606) wrote:

Does this also happen when the "Delay viewport updates" option is enabled?

With "Delay viewport updates" enabled I do not have the issue anymore.

Dalai Felinto (dfelinto) edited projects, added BF Blender; removed BF Blender (2.90).Aug 18 2020, 2:22 PM
Richard Antalik (ISS) added a subscriber: Richard Antalik (ISS).Nov 27 2020, 9:57 PM

@AntoineR (S_Jockey) I am looking at older reports, is this still an issue? Or have anything changed?

AntoineR (S_Jockey) added a comment.Dec 1 2020, 3:29 PM
In T79325#1063605, @Richard Antalik (ISS) wrote:

@AntoineR (S_Jockey) I am looking at older reports, is this still an issue? Or have anything changed?

Hi Richard, I still have the issue in 2.91.0 with Rebuild BVH option and in order to avoid that I use the workaround "Delay viewport updates".

Falk David (filedescriptor) closed this task as Archived.Jan 5 2021, 4:40 PM
Falk David (filedescriptor) added a subscriber: Falk David (filedescriptor).

No activity for more than a week. As per the tracker policy, we assume the issue is gone and can be closed.

Thanks again for the report. If the problem persists please open a new report with the required information.

Richard Antalik (ISS) added a comment.Jan 6 2021, 4:55 AM

I think this was a valid report still, Though I would assume it is duplicate of T79146 which is resolved now.