Regression: Lag in sculpt mode when navigating around an object with modifiers #100906

New Issue

Quentin Geluyckens · 2022-09-08T10:52:08+02:00

2022-09-08 10:52:08 +02:00

System Information
Operating system: Windows-10-10.0.19043-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 3090/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 516.94
RAM: 64Go DDR4
Processor: Intel core i7-7820X @ 3.6GHz

Blender Version
Broken: version: 3.3.0, caused by 285a68b7bb
Worked: 3.2.2

Short description of error
Viewport performance is now quite poor when displaying/sculpting a mesh with a modifier like Subdivision Surface, Mirror, or Array in Sculpt Mode.
Tested on 2 machines with similar hardware, the issue persists.
First noticed on a sub-10K faces mesh.
Even after a viewport change (rotation of the view, for example), it takes 2-3 seconds for the cursor to get back to normal speed.

Exact steps for others to reproduce the error
blender330_sculpt-subsurf_perf-issue.blend

open with 3.3 LTS, go to sculpt mode and rotate around the object, try sculpting it, you'll notice the lag.
do the same steps in 3.2.2 and performance is great.

**System Information** Operating system: Windows-10-10.0.19043-SP0 64 Bits Graphics card: NVIDIA GeForce RTX 3090/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 516.94 RAM: 64Go DDR4 Processor: Intel core i7-7820X @ 3.6GHz **Blender Version** Broken: version: 3.3.0, caused by 285a68b7bb Worked: 3.2.2 **Short description of error** Viewport performance is now quite poor when displaying/sculpting a mesh with a modifier like Subdivision Surface, Mirror, or Array in Sculpt Mode. Tested on 2 machines with similar hardware, the issue persists. First noticed on a sub-10K faces mesh. Even after a viewport change (rotation of the view, for example), it takes 2-3 seconds for the cursor to get back to normal speed. **Exact steps for others to reproduce the error** [blender330_sculpt-subsurf_perf-issue.blend](https://archive.blender.org/developer/F13467553/blender330_sculpt-subsurf_perf-issue.blend) - open with 3.3 LTS, go to sculpt mode and rotate around the object, try sculpting it, you'll notice the lag. - do the same steps in 3.2.2 and performance is great.

Quentin Geluyckens commented

2022-09-08 10:52:08 +02:00

Added subscriber: @QuentinG

blender-admin commented

2022-09-08 10:52:08 +02:00

#100934 was marked as duplicate of this issue

TheRedWaxPolice commented

2022-09-08 16:53:20 +02:00

Added subscriber: @TheRedWaxPolice

Germano Cavalcante commented

2022-09-09 17:11:02 +02:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2022-09-09 17:11:02 +02:00

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

Germano Cavalcante commented

2022-09-09 17:11:02 +02:00

I can confirm the problem
It was introduced sometime between 8589f60546 and 67f5596f19.

I can confirm the problem It was introduced sometime between 8589f60546b3 and 67f5596f194c.

Germano Cavalcante changed title from ~~Sculpt Mode : poor performance with Subdivision Surface modifier~~ to Regression: Lag in sculpt mode when navigating around an object with subdivision modifier

2022-09-09 18:02:24 +02:00

Omar Emara commented

2022-09-12 11:52:49 +02:00

Added subscribers: @Vir, @lichtwerk, @OmarEmaraDev, @PratikPB2123

Omar Emara changed title from ~~Regression: Lag in sculpt mode when navigating around an object with subdivision modifier~~ to Regression: Lag in sculpt mode when navigating around an object with modifiers

2022-09-12 11:54:16 +02:00

blender-admin commented

2022-09-12 20:09:03 +02:00

This issue was referenced by 100fe61f7c

This issue was referenced by 100fe61f7c5be981193a46776cef5ba4df64eb31

Joseph Eagar commented

2022-09-14 08:07:00 +02:00

Changed status from 'Confirmed' to: 'Resolved'

Joseph Eagar closed this issue

2022-09-14 08:07:00 +02:00

Joseph Eagar self-assigned this 2022-09-14 08:07:00 +02:00

Philipp Oeser commented

2022-09-14 08:47:41 +02:00

@JosephEagar : can we add this to #100749 (Blender LTS: Maintenance Task 3.3) ?
3.3 is LTS and I assume we dont want to stick with the issue here (or #100941) for 2 years...

@JosephEagar : can we add this to #100749 (Blender LTS: Maintenance Task 3.3) ? 3.3 is LTS and I assume we dont want to stick with the issue here (or #100941) for 2 years...

Christoph Lendenfeld referenced this issue

2023-02-10 11:56:22 +01:00

Blender LTS: Maintenance Task 3.3 #100749

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Regression: Lag in sculpt mode when navigating around an object with modifiers #100906