Regression: Blender 4.0 3D View resizing in Workbench mode slower and laggier than 3.6 #113010

New Issue

Ludvik Koutny · 2023-09-28T12:55:43+02:00

Ludvik Koutny commented

2023-09-28 12:55:43 +02:00

System Information
Operating system: Windows-10-10.0.22621-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 2080 Ti/PCIe/SSE2 NVIDIA Corporation 4.6.0 NVIDIA 537.13

Blender Version
Broken: version: 4.0.0 Beta, branch: blender-v4.0-release, commit date: 2023-09-28 00:03, hash: 751c9ef620a0
Worked: 3.6.2

Short description of error
Resizing 3D view is significantly slower and laggier in 4.0 compared to 3.6, but only if the 3D View is in one of the workbench modes. If the 3D View is in Eevee, the performance is the same between 3.6 and 4.0.

See attached ResizeRegression.mp4 for visual example.

Exact steps for others to reproduce the error

Open both Blender 3.6 and 4.0.
Add some content to the 3D view so that it covers most of the 3D view area. A monkey mesh will do.
Make sure 3D View is in Solid shaded mode
Drag the 3D View space border to resize it in both 3.6 and 4.0
Result: 3D View resizing is slower and laggier in 4.0 compared to 3.6
Expected: 3D View resizing in 4.0 is same performance or better than 3.6

**System Information** Operating system: Windows-10-10.0.22621-SP0 64 Bits Graphics card: NVIDIA GeForce RTX 2080 Ti/PCIe/SSE2 NVIDIA Corporation 4.6.0 NVIDIA 537.13 **Blender Version** Broken: version: 4.0.0 Beta, branch: blender-v4.0-release, commit date: 2023-09-28 00:03, hash: `751c9ef620a0` Worked: 3.6.2 **Short description of error** Resizing 3D view is significantly slower and laggier in 4.0 compared to 3.6, but only if the 3D View is in one of the workbench modes. If the 3D View is in Eevee, the performance is the same between 3.6 and 4.0. See attached ResizeRegression.mp4 for visual example. <video src="/attachments/9fa33223-def0-4146-88da-7ac286c74c4d" controls></video> **Exact steps for others to reproduce the error** 1. Open both Blender 3.6 and 4.0. 2. Add some content to the 3D view so that it covers most of the 3D view area. A monkey mesh will do. 3. Make sure 3D View is in Solid shaded mode 4. Drag the 3D View space border to resize it in both 3.6 and 4.0 Result: 3D View resizing is slower and laggier in 4.0 compared to 3.6 Expected: 3D View resizing in 4.0 is same performance or better than 3.6

ResizeRegression.mp4

64 MiB

Ludvik Koutny added the

labels 2023-09-28 12:55:44 +02:00

Germano Cavalcante commented

2023-09-28 21:47:00 +02:00

Thanks for the report, @Rawalanche.

For me it's very difficult to notice, but after checking the FPS I noticed that Blender 4.0 actually has a penalty:

3.6	4.0

Appears to involve Workbench Next... @pragma37

Thanks for the report, @Rawalanche. For me it's very difficult to notice, but after checking the FPS I noticed that Blender 4.0 actually has a penalty: | 3.6 | 4.0 | | -- | -- | | ![GIF_3_6.gif](/attachments/27d65da8-7925-4db2-933b-e79548bf4c23) | ![GIF_4_1.gif](/attachments/883fbbcc-bdf4-4c7a-b7df-cdfa961ea2a6) | Appears to involve Workbench Next... @pragma37

GIF_3_6.gif

33 MiB

GIF_4_1.gif

35 MiB

Germano Cavalcante added the

Module

EEVEE & Viewport

label 2023-09-28 21:47:13 +02:00

Pratik Borhade commented

2023-09-30 07:51:18 +02:00

I can confirm. This is more noticeable with higher frame rate value

Pratik Borhade added

and removed

labels 2023-09-30 07:51:36 +02:00

Miguel Pozo commented

2023-10-04 18:14:44 +02:00

I can't reproduce it on my end.
However, could you check if this PR helps?
#113251 (comment)

I can't reproduce it on my end. However, could you check if this PR helps? https://projects.blender.org/blender/blender/pulls/113251#issuecomment-1037283

Germano Cavalcante commented

2023-10-04 20:02:38 +02:00

Since for me the problem is not that noticeable either. I would wait for @Rawalanche or @PratikPB2123 to test.
A build with the patch applied can be downloaded from:
https://builder.blender.org/download/patch/PR113251/

Since for me the problem is not that noticeable either. I would wait for @Rawalanche or @PratikPB2123 to test. A build with the patch applied can be downloaded from: https://builder.blender.org/download/patch/PR113251/

Ludvik Koutny commented

2023-10-04 21:53:02 +02:00

Since for me the problem is not that noticeable either. I would wait for @Rawalanche or @PratikPB2123 to test.
A build with the patch applied can be downloaded from:
https://builder.blender.org/download/patch/PR113251/

Can confirm. This PR fixes it, the performance is same, if not better than in 3.6.

> Since for me the problem is not that noticeable either. I would wait for @Rawalanche or @PratikPB2123 to test. > A build with the patch applied can be downloaded from: > https://builder.blender.org/download/patch/PR113251/ Can confirm. This PR fixes it, the performance is same, if not better than in 3.6.

Miguel Pozo commented

2023-10-05 15:16:32 +02:00

Awesome! Thanks for checking.

Miguel Pozo referenced a pull request that will close this issue

2023-10-05 15:17:06 +02:00

Workbench: Fix: Performance Regressions #113251

Miguel Pozo referenced this issue from a commit

2023-10-06 15:31:53 +02:00

Workbench: Fix: Performance Regressions

Miguel Pozo closed this issue

2023-10-06 15:31:55 +02:00

Blender Bot added