Face invisible when using second material slot #78014

New Issue

Dante · 2020-06-18T20:32:19+02:00

Dante commented

2020-06-18 20:32:19 +02:00

System Information
Operating system: Kubuntu 18.04
Graphics card: Radeon R9 390

Blender Version
Broken: 2.83, 2.90
Worked: 2.82a

Short description of error
Cannot assign a second material to the same object as in previous 2.82a version.
The problem is that with 2.83 and later, if i try to use multiple material only the part with the first material is visible.
Here the default cube with only one material:

Here with a second material applied to one face:

This append when i click on assign button to apply the second material on the selected face.

Exact steps for others to reproduce the error

assign a material to the default cube
select a face and try to assign to it a second material.
This or these face/faces becomes invisible both in viewport and the final render.

**System Information** Operating system: Kubuntu 18.04 Graphics card: Radeon R9 390 **Blender Version** Broken: 2.83, 2.90 Worked: 2.82a **Short description of error** Cannot assign a second material to the same object as in previous 2.82a version. The problem is that with 2.83 and later, if i try to use multiple material only the part with the first material is visible. Here the default cube with only one material: ![Screenshot_20200619_150354.png](https://archive.blender.org/developer/F8632076/Screenshot_20200619_150354.png) Here with a second material applied to one face: ![Screenshot_20200619_150542.png](https://archive.blender.org/developer/F8632079/Screenshot_20200619_150542.png) This append when i click on assign button to apply the second material on the selected face. **Exact steps for others to reproduce the error** - assign a material to the default cube - select a face and try to assign to it a second material. This or these face/faces becomes invisible both in viewport and the final render.

Dante commented

2020-06-18 20:32:19 +02:00

Added subscriber: @iw7

blender-admin commented

2020-06-18 20:32:19 +02:00

#78224 was marked as duplicate of this issue

Robert Guetzkow changed title from ~~Engineer~~ to Face invisible when using second material slot

2020-06-18 20:36:23 +02:00

Germano Cavalcante commented

2020-06-19 14:52:42 +02:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2020-06-19 14:52:42 +02:00

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

Germano Cavalcante commented

2020-06-19 14:52:42 +02:00

I cannot reproduce the problem. But I'm also not sure if I understood the problem correctly.

Here is a guide that helps you solve graphic problems:
https://docs.blender.org/manual/en/dev/troubleshooting/gpu/index.html

I cannot reproduce the problem. But I'm also not sure if I understood the problem correctly. Here is a guide that helps you solve graphic problems: https://docs.blender.org/manual/en/dev/troubleshooting/gpu/index.html

Dante commented

2020-06-19 15:06:39 +02:00

i'm using standard drivers included with the distribution.
Up to the 2.82a all works as expected. With the 2.83.0, but i tried with the last 2.9 experimental, i have the same issue.

The problem is that with 2.83 and later, if i try to use multiple material on the same object, onlthe parto of mesh with the first material slot assigne are visible. Here the default cube with only a material.
Here with a second material applied to one face
This append when i click on assign button to apply the second material on the selected face.

i'm using standard drivers included with the distribution. Up to the 2.82a all works as expected. With the 2.83.0, but i tried with the last 2.9 experimental, i have the same issue. The problem is that with 2.83 and later, if i try to use multiple material on the same object, onlthe parto of mesh with the first material slot assigne are visible. Here the default cube with only a material. ![Screenshot_20200619_150354.png](https://archive.blender.org/developer/F8632076/Screenshot_20200619_150354.png) Here with a second material applied to one face ![Screenshot_20200619_150542.png](https://archive.blender.org/developer/F8632079/Screenshot_20200619_150542.png) This append when i click on assign button to apply the second material on the selected face.

Germano Cavalcante commented

2020-06-19 15:45:11 +02:00

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

Richard Antalik commented

2020-06-25 14:27:24 +02:00

Added subscribers: @BhaveshVishwakarma, @iss

Clément Foucault commented

2020-07-02 18:02:05 +02:00

Added subscriber: @fclem

Clément Foucault commented

2020-07-02 18:02:05 +02:00

Does that happen only in material/rendered shading mode? Can you attach your system-info.txt here?

Does that happen only in material/rendered shading mode? Can you attach your `system-info.txt` here?

Germano Cavalcante commented

2020-07-03 18:44:51 +02:00

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

Dante commented

2020-07-04 10:11:35 +02:00

sorry for the late reply, here my system-info.txt as requested and yes, this happen only in material/rendered shading mode.
Face is still selectable but invisible.

system-info.txt

sorry for the late reply, here my system-info.txt as requested and yes, this happen only in material/rendered shading mode. Face is still selectable but invisible. [system-info.txt](https://archive.blender.org/developer/F8663344/system-info.txt)

Germano Cavalcante commented

2020-07-14 14:56:06 +02:00

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

Philipp Oeser commented

2020-07-31 11:00:06 +02:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2020-07-31 11:00:06 +02:00

@fclem: If it is a bug, it should be confirmed? If it is not confirmed, it should probably still be a report (possibly set to Needs Developer To Reproduce)?

Philipp Oeser commented

2020-11-23 17:40:40 +01:00

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

Philipp Oeser commented

2020-11-23 17:40:40 +01:00

Mesa is at 20.2.2 now [your system-info is at 19.2.8 - which is almost a year old].

Just to make sure:

could we try one more time with up-to-date drivers?
and a fresh build from https://builder.blender.org/download/ as well?

Mesa is at 20.2.2 now [your system-info is at 19.2.8 - which is almost a year old]. Just to make sure: - could we try one more time with up-to-date drivers? - and a fresh build from https://builder.blender.org/download/ as well?

Philipp Oeser commented

2020-12-11 18:58:21 +01:00

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

Philipp Oeser closed this issue

2020-12-11 18:58:21 +01:00

Philipp Oeser commented

2020-12-11 18:58:21 +01:00

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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Face invisible when using second material slot #78014