Graphical bug while in Weight Painting Mode with AMD RX 6800XT #83936

New Issue

nathan · 2020-12-18T20:03:34+01:00

nathan commented

2020-12-18 20:03:34 +01:00

System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: AMD Radeon RX 6800 XT ATI Technologies Inc. 4.5.14757 Core Profile Context 20.12.1 27.20.14501.28009

Blender Version
Broken: version: 2.83.0 through 2.91.0, branch: master, commit date: 2020-11-25 08:34, hash: 0f45cab862
Worked: version: 2.82 (sub 7), branch: master, commit date: 2020-03-12 05:06, hash: 375c7dc4ca, type: Release

Short description of error
Graphical artifacts that seems to be originated from the vertices of a mesh

I went as far as version 2.82.7, and the artifacts were gone. Since version 2.83, the bugs are present.

I deleted all config files. All versions were redownloaded for testing.
I have found that, with X-Ray activated, the artifacts disappears
Those same artifacts can also be seen in Edit mode, but they are less pronounced.
2020.12.18-19.40_Trim.mp4
I also tested with the latest version of Blender which was available, the same bug happens:
version: 2.92.0 Alpha, branch: master, commit date: 2020-12-17 20:43, hash: 23233fcf05, type: Release
The file used in the screenshots / video:
2_91_graphical_bug_amd_6800xt.blend

These artifacts also occur when using a mask in sculpt mode, and when using shadows in solid mode.

Exact steps for others to reproduce the error
Starting with the default.blend:

create a mesh with many vertices (a UV Sphere or the default cube with the subdivision surface modifier),
go into Weight Paint Mode / Edit mode (although much more visible in Weight Painting Mode)

**System Information** Operating system: Windows-10-10.0.19041-SP0 64 Bits Graphics card: AMD Radeon RX 6800 XT ATI Technologies Inc. 4.5.14757 Core Profile Context 20.12.1 27.20.14501.28009 **Blender Version** Broken: version: 2.83.0 through 2.91.0, branch: master, commit date: 2020-11-25 08:34, hash: `0f45cab862` Worked: version: 2.82 (sub 7), branch: master, commit date: 2020-03-12 05:06, hash: 375c7dc4caf4, type: Release **Short description of error** Graphical artifacts that seems to be originated from the vertices of a mesh ![blender_2_91_graphical_bug_amd_6800xt.png](https://archive.blender.org/developer/F9516641/blender_2_91_graphical_bug_amd_6800xt.png) I went as far as version 2.82.7, and the artifacts were gone. Since version 2.83, the bugs are present. ![blender_2_82_7_graphical_bug_amd_6800xt.png](https://archive.blender.org/developer/F9516646/blender_2_82_7_graphical_bug_amd_6800xt.png) I deleted all config files. All versions were redownloaded for testing. I have found that, with X-Ray activated, the artifacts disappears Those same artifacts can also be seen in Edit mode, but they are less pronounced. [2020.12.18-19.40_Trim.mp4](https://archive.blender.org/developer/F9516660/2020.12.18-19.40_Trim.mp4) I also tested with the latest version of Blender which was available, the same bug happens: version: 2.92.0 Alpha, branch: master, commit date: 2020-12-17 20:43, hash: 23233fcf056e, type: Release The file used in the screenshots / video: [2_91_graphical_bug_amd_6800xt.blend](https://archive.blender.org/developer/F9516650/2_91_graphical_bug_amd_6800xt.blend) These artifacts also occur when using a mask in sculpt mode, and when using shadows in solid mode. **Exact steps for others to reproduce the error** Starting with the default.blend: - create a mesh with many vertices (a UV Sphere or the default cube with the subdivision surface modifier), - go into Weight Paint Mode / Edit mode (although much more visible in Weight Painting Mode)

nathan commented

2020-12-18 20:03:34 +01:00

Added subscriber: @Pionpouage

blender-admin commented

2020-12-18 20:03:34 +01:00

#84853 was marked as duplicate of this issue

blender-admin commented

2020-12-18 20:03:34 +01:00

#85877 was marked as duplicate of this issue

Robert Guetzkow commented

2020-12-19 12:04:29 +01:00

Added subscriber: @rjg

Robert Guetzkow commented

2020-12-19 12:04:29 +01:00

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

Robert Guetzkow commented

2020-12-19 12:04:29 +01:00

There are currently several issues with AMD drivers that affect viewport rendering, although mainly for the RX 400 and 500 series and the glitch looks different (see #82856). Could you test if downgrading to previous driver, e.g. 20.11.1 avoids these graphics glitches?

I can't reproduce the problem with my Nvidia GPU or in a VM.

There are currently several issues with AMD drivers that affect viewport rendering, although mainly for the RX 400 and 500 series and the glitch looks different (see #82856). Could you test if downgrading to previous driver, e.g. 20.11.1 avoids these graphics glitches? I can't reproduce the problem with my Nvidia GPU or in a VM.

nathan commented

2020-12-19 13:16:47 +01:00

I was unable to test with driver version 20.11.1 or older, as they do not offer compatibility with RX 6000 series GPUs. I tested with the oldest driver possible, 20.11.2, the glitches are still present.

I was unable to test with driver version 20.11.1 or older, as they do not offer compatibility with RX 6000 series GPUs. I tested with the oldest driver possible, 20.11.2, the glitches are still present. ![image.png](https://archive.blender.org/developer/F9517778/image.png)

Robert Guetzkow commented

2021-01-13 12:39:00 +01:00

Could you please check if the problem still occurs in the most recent daily build of 2.92 ? Workarounds for other issues with AMD graphics drivers have been committed perhaps they have resolved your issue as well.

Could you please check if the problem still occurs in the most recent [daily build of 2.92 ](https://builder.blender.org/download/)? Workarounds for other issues with AMD graphics drivers have been committed perhaps they have resolved your issue as well.

nathan commented

2021-01-14 21:44:48 +01:00

Unfortunately, this issue is still not fixed with the latest build available: version: 2.92.0 Beta, branch: master, commit date: 2021-01-13 23:55, hash: 5804bf25bd, type: Release
I should also add that I have not experienced any of the problems collected in #82856

Unfortunately, this issue is still not fixed with the latest build available: version: 2.92.0 Beta, branch: master, commit date: 2021-01-13 23:55, hash: 5804bf25bdfe, type: Release I should also add that I have not experienced any of the problems collected in #82856 ![image.png](https://archive.blender.org/developer/F9579386/image.png)

Robert Guetzkow commented

2021-01-19 11:29:15 +01:00

Changed status from 'Needs User Info' to: 'Needs Developer To Reproduce'

nathan commented

2021-01-20 18:51:20 +01:00

After some more testing, I found that the "Shadow" option in the Viewport Shading menu does the same artifacts.
Tested with the same version and hardware as the original post.
2021.01.20-18.38_Trim.mp4

After some more testing, I found that the "Shadow" option in the Viewport Shading menu does the same artifacts. Tested with the same version and hardware as the original post. [2021.01.20-18.38_Trim.mp4](https://archive.blender.org/developer/F9589837/2021.01.20-18.38_Trim.mp4)

Jeroen Bakker commented

2021-03-05 08:38:19 +01:00

Closed as duplicate of #85877

Jeroen Bakker closed this issue

2021-03-05 08:38:19 +01:00

Evan Wilson commented

2021-03-07 21:01:54 +01:00

Changed status from 'Duplicate' to: 'Needs Developer To Reproduce'

Evan Wilson reopened this issue

2021-03-07 21:01:54 +01:00

Evan Wilson commented

2021-03-07 21:02:13 +01:00

Added subscribers: @bidan65, @EAW, @Jeroen-Bakker, @mano-wii

Evan Wilson commented

2021-03-07 22:21:20 +01:00

Added subscriber: @AssafNegev

Evan Wilson commented

2021-03-07 22:30:40 +01:00

As #84853 has the same GPU and driver combination, along with the same visual artifacts albeit in a different mode, I have merged the reports and will update this one with @AssafNegev’s finer version bisection.

Assaf Negev commented

2021-11-13 15:35:06 +01:00

Any news about this?

Evan Wilson commented

2021-11-13 15:58:14 +01:00

In #83936#1253278, @AssafNegev wrote:
Any news about this?

Yes actually. It appears there are separate threads for 6700/6900 XT and this one for the 6800 XT. Although this one is older, the other thread has more information so I’ll merge this one into that one.

In #87927#1251832, @Jeroen-Bakker wrote:
I tested the upcoming AMD driver and there the issue seems to be solved. Beta of the new driver will be made public very shortly.
renderer:	'AMD Radeon PRO W6800'
vendor:		'ATI Technologies Inc.'
version:	'4.5.14802 Core Profile Context FireGL 21.Q4 30.0.14002.136'
I will wait for community to confirm that the driver also work for them.

> In #83936#1253278, @AssafNegev wrote: > Any news about this? Yes actually. It appears there are separate threads for 6700/6900 XT and this one for the 6800 XT. Although this one is older, the other thread has more information so I’ll merge this one into that one. > In #87927#1251832, @Jeroen-Bakker wrote: > I tested the upcoming AMD driver and there the issue seems to be solved. Beta of the new driver will be made public very shortly. > ![image.png](https://archive.blender.org/developer/F11786259/image.png) > > ``` > renderer: 'AMD Radeon PRO W6800' > vendor: 'ATI Technologies Inc.' > version: '4.5.14802 Core Profile Context FireGL 21.Q4 30.0.14002.136' > ``` > I will wait for community to confirm that the driver also work for them.

Evan Wilson commented

2021-11-13 16:00:07 +01:00

Closed as duplicate of #87927

Evan Wilson closed this issue

2021-11-13 16:00:07 +01:00

Assaf Negev commented

2021-11-14 07:55:34 +01:00

that's good news, thanks :)

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Graphical bug while in Weight Painting Mode with AMD RX 6800XT #83936