Maniphest T101967

The "Material Preview" mode is very slow.
Closed, Archived
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Assigned To
None
Authored By
Konstantin (imlegr)
Oct 21 2022, 7:08 AM
Tags
  • BF Blender
Subscribers
Iliya Katueshenock (Moder)
Konstantin (imlegr)
Pratik Borhade (PratikPB2123)
Thomas Dinges (dingto)
Vyacheslav (hitrpr)

Description

System Information
Operating system: Arch Linux, Windows 10/11.
Graphics card: RTX 2070, RTX 3070Ti.

Blender Version
Broken: All version 3.0 - 3.3.
Worked: 2.93.

Short description of error
Material Preview mode is very slow. It wasn't that slow before.

Even with a small scene, it's slow.

  1. Open a model.
  2. Z -> "Material Preview".
  3. The preview window moves jerkily.

There was no such thing in version 2.93, everything there is much smoother.

Event Timeline

Konstantin (imlegr) created this task.Oct 21 2022, 7:08 AM
Konstantin (imlegr) updated the task description.
Vyacheslav (hitrpr) added a subscriber: Vyacheslav (hitrpr).Oct 21 2022, 3:52 PM
  1. Do you have consistent perfomance drop, or only after you start eevee/lookdev mode?

It is better to make screencast video.

  1. Are you sure, all drivers are fresh and Blender see GPU properly?
  1. May be there are shader compiling?
Konstantin (imlegr) added a comment.Oct 21 2022, 5:26 PM
  1. When I press Z -> "Material Preview", it switches the window to the material view mode on objects. At this very moment the performance drops dramatically and when I spin the model it moves jerkily. I can't record a video because I have a contract for all the models I have and I can't show them.
  2. There is nothing wrong with the drivers and GPU. The same scene in Blender 2.93 opens smoothly.
  3. All the shaders are compiled. I first of all wait until the shaders are compiled, and then I do something.
Iliya Katueshenock (Moder) added a subscriber: Iliya Katueshenock (Moder).Oct 21 2022, 5:39 PM

If there is no way to somehow recreate it on public resources, then fix it ... how?

Konstantin (imlegr) added a comment.Oct 21 2022, 7:21 PM

I opened the blender, waited for the caching to finish. Then I switched between modes and rotated the view around the model.

system-info.txt21 KBDownload

gpu_debug_log.txt286 KBDownload

Vyacheslav (hitrpr) added a comment.EditedOct 22 2022, 1:42 AM
In T101967#1435609, @Konstantin (imlegr) wrote:
  1. When I press Z -> "Material Preview", it switches the window to the material view mode on objects. At this very moment the performance drops dramatically and when I spin the model it moves jerkily. I can't record a video because I have a contract for all the models I have and I can't show them.
  2. There is nothing wrong with the drivers and GPU. The same scene in Blender 2.93 opens smoothly.
  3. All the shaders are compiled. I first of all wait until the shaders are compiled, and then I do something.

Use blender demo files for video.
If the issue appears only with certain file, you should make research and find what minimum combination of details will produce the bug. Combine similar with free assets.
Then upload file with issue for public test. Otherwise, there is no way to find and fix it.

Konstantin (imlegr) added a comment.Oct 22 2022, 4:17 AM
In T101967#1435740, @Vyacheslav (hitrpr) wrote:
In T101967#1435609, @Konstantin (imlegr) wrote:
  1. When I press Z -> "Material Preview", it switches the window to the material view mode on objects. At this very moment the performance drops dramatically and when I spin the model it moves jerkily. I can't record a video because I have a contract for all the models I have and I can't show them.
  2. There is nothing wrong with the drivers and GPU. The same scene in Blender 2.93 opens smoothly.
  3. All the shaders are compiled. I first of all wait until the shaders are compiled, and then I do something.

Use blender demo files for video.
If the issue appears only with certain file, you should make research and find what minimum combination of details will produce the bug. Combine similar with free assets.
Then upload file with issue for public test. Otherwise, there is no way to find and fix it.

I agree with you. I will try to make a file that I can upload here so that it can be viewed and analyzed. But I am also sure that there is something useful in the logs I sent.

Pratik Borhade (PratikPB2123) changed the task status from Needs Triage to Needs Information from User.Oct 22 2022, 6:38 AM
Pratik Borhade (PratikPB2123) added a subscriber: Pratik Borhade (PratikPB2123).
Konstantin (imlegr) added a comment.Oct 28 2022, 8:42 PM

How can I see the amount of FPS in the view window? So that I can visually see and send the file with the biggest performance drop.

Vyacheslav (hitrpr) added a comment.Oct 30 2022, 7:16 AM
In T101967#1438400, @Konstantin (imlegr) wrote:

How can I see the amount of FPS in the view window? So that I can visually see and send the file with the biggest performance drop.

You can set fps of scene to 60 and start animation, so fps counter will be available.

Otherwise you should use external tool like Riva.

Pratik Borhade (PratikPB2123) added a comment.Nov 30 2022, 4:35 PM

@Konstantin (imlegr) hi, did you manage to create a test file?

Thomas Dinges (dingto) closed this task as Archived.Dec 15 2022, 4:38 PM
Thomas Dinges (dingto) added a subscriber: Thomas Dinges (dingto).

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.