Subdivision Surface causes a problem in the viewport #96907

Closed
opened 2022-03-31 00:00:21 +02:00 by Lauren Keogh · 15 comments

System Information
Operating system: Windows-10-10.0.19044-SP0 64 Bits
Graphics card: Intel(R) HD Graphics 5500 Intel 4.4.0 - Build 20.19.15.4835

Blender Version
Broken: version: 3.1.0, branch: master, commit date: 2022-03-08 18:16, hash: c77597cd0e
Worked: 2.9

Short description of error
After updating my version of Blender the subdivision surface modifier started acting strange, didn't get this issue when I used this Blend file on a different computer though so I'm not sure what the issue is.

Exact steps for others to reproduce the error
Create an object, turn on smooth shading
Duplicate the object
turn on subdivision surface modifier
(This happened after I updated my Blender version but for some reason the model breaks)With the modifier turned on_2.PNG

With the modifier turned on_1.PNG

With the modifier turned off.PNG

**System Information** Operating system: Windows-10-10.0.19044-SP0 64 Bits Graphics card: Intel(R) HD Graphics 5500 Intel 4.4.0 - Build 20.19.15.4835 **Blender Version** Broken: version: 3.1.0, branch: master, commit date: 2022-03-08 18:16, hash: `c77597cd0e` Worked: 2.9 **Short description of error** After updating my version of Blender the subdivision surface modifier started acting strange, didn't get this issue when I used this Blend file on a different computer though so I'm not sure what the issue is. **Exact steps for others to reproduce the error** Create an object, turn on smooth shading Duplicate the object turn on subdivision surface modifier (This happened after I updated my Blender version but for some reason the model breaks)![With the modifier turned on_2.PNG](https://archive.blender.org/developer/F12958274/With_the_modifier_turned_on_2.PNG) ![With the modifier turned on_1.PNG](https://archive.blender.org/developer/F12958273/With_the_modifier_turned_on_1.PNG) ![With the modifier turned off.PNG](https://archive.blender.org/developer/F12958272/With_the_modifier_turned_off.PNG)
Author

Added subscriber: @LKelda

Added subscriber: @LKelda
Author

It appears that right clicking and pressing set from faces fixes it? I'm not sure if that will work for every time this happens though

It appears that right clicking and pressing set from faces fixes it? I'm not sure if that will work for every time this happens though

Added subscriber: @iss

Added subscriber: @iss

Changed status from 'Needs Triage' to: 'Needs User Info'

Changed status from 'Needs Triage' to: 'Needs User Info'

I assume this could be related to GPU subdivision feature. Can you check if this happens when you disable it in Preferences > Interface > Subdivision?

Wasn't able to reproduce here with cube, can try with intel machine too. But please check if steps apply to default cube, otherwise upload .blend file.

I assume this could be related to GPU subdivision feature. Can you check if this happens when you disable it in Preferences > Interface > Subdivision? Wasn't able to reproduce here with cube, can try with intel machine too. But please check if steps apply to default cube, otherwise upload .blend file.
Author

Diabling the GPU subivision fixed the issue, thank you

Diabling the GPU subivision fixed the issue, thank you

Changed status from 'Needs User Info' to: 'Needs Triage'

Changed status from 'Needs User Info' to: 'Needs Triage'

Added subscriber: @kevindietrich

Added subscriber: @kevindietrich

CC @kevindietrich Can you reproduce? Seems OK on HD graphics 500

CC @kevindietrich Can you reproduce? Seems OK on HD graphics 500
Member

Added subscriber: @PratikPB2123

Added subscriber: @PratikPB2123
Member

Changed status from 'Needs Triage' to: 'Needs User Info'

Changed status from 'Needs Triage' to: 'Needs User Info'
Member

@LKelda , can you upload the example file? I'm not able to reproduce either on 3.2
Also upgrade your GPU drivers, that may also fix the problem: https://docs.blender.org/manual/en/dev/troubleshooting/gpu/windows/intel.html

Graphics card: Intel(R) UHD Graphics 620 Intel 4.5.0 - Build 26.20.100.7323```
@LKelda , can you upload the example file? I'm not able to reproduce either on 3.2 Also upgrade your GPU drivers, that may also fix the problem: https://docs.blender.org/manual/en/dev/troubleshooting/gpu/windows/intel.html ```Operating system: Windows-10-10.0.19043-SP0 64 Bits Graphics card: Intel(R) UHD Graphics 620 Intel 4.5.0 - Build 26.20.100.7323```

In #96907#1333265, @iss wrote:
CC @kevindietrich Can you reproduce? Seems OK on HD graphics 500

I cannot reproduce this.

> In #96907#1333265, @iss wrote: > CC @kevindietrich Can you reproduce? Seems OK on HD graphics 500 I cannot reproduce this.

Changed status from 'Needs User Info' to: 'Archived'

Changed status from 'Needs User Info' to: 'Archived'

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.

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.
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Reference: blender/blender#96907
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