Black Artifacts/blocks when panning viewport with certain 3D models or blend files #84938

New Issue

Thomas Bristow · 2021-01-21T17:15:54+01:00

Thomas Bristow commented

2021-01-21 17:15:54 +01:00

System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: AMD Radeon(TM) Vega 6 Graphics ATI Technologies Inc. 4.5.14757 Core Profile Context 20.11.2 27.20.14501.18003

Blender Version
Broken: version: 2.92.0 Alpha, branch: master, commit date: 2021-01-11 21:30, hash: acbda123ad

Short description of error
When loading certain models (For example the blender cloud Rain V2 model, see attached file), when you pan the camera or viewport, the model seems to leave Black Artifacts on the area around where it was.
This does not appear in renders. This happens every time the file is opened and there doesn't seem to be a way to fix it.
2021-01-21 16-12-23.mp4

Exact steps for others to reproduce the error

Open the attached .blend file
Pan the viewport around
rain_v2_3.blend

**System Information** Operating system: Windows-10-10.0.19041-SP0 64 Bits Graphics card: AMD Radeon(TM) Vega 6 Graphics ATI Technologies Inc. 4.5.14757 Core Profile Context 20.11.2 27.20.14501.18003 **Blender Version** Broken: version: 2.92.0 Alpha, branch: master, commit date: 2021-01-11 21:30, hash: `acbda123ad` **Short description of error** When loading certain models (For example the blender cloud Rain V2 model, see attached file), when you pan the camera or viewport, the model seems to leave Black Artifacts on the area around where it was. This does not appear in renders. This happens every time the file is opened and there doesn't seem to be a way to fix it. [2021-01-21 16-12-23.mp4](https://archive.blender.org/developer/F9591155/2021-01-21_16-12-23.mp4) **Exact steps for others to reproduce the error** - Open the attached .blend file - Pan the viewport around [rain_v2_3.blend](https://archive.blender.org/developer/F9591162/rain_v2_3.blend)

Thomas Bristow commented

2021-01-21 17:15:54 +01:00

Added subscriber: @Vortex64

blender-admin commented

2021-01-21 17:15:54 +01:00

#87116 was marked as duplicate of this issue

blender-admin commented

2021-01-21 17:15:54 +01:00

#85924 was marked as duplicate of this issue

Germano Cavalcante commented

2021-01-22 15:43:27 +01:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2021-01-22 15:43:27 +01:00

Changed status from 'Needs Triage' to: 'Confirmed'

Germano Cavalcante commented

2021-01-22 15:43:27 +01:00

I can confirm the bug.
It is only seen with workbench.
I'm still not sure what causes it.
It was introduced in blender 2.91 somewhere between deb76548c1 and 6fe609d4c3.

I can confirm the bug. It is only seen with workbench. I'm still not sure what causes it. It was introduced in blender 2.91 somewhere between `deb76548c1` and `6fe609d4c3`.

Jeroen Bakker commented

2021-01-25 13:40:53 +01:00

Added subscriber: @Jeroen-Bakker

Jeroen Bakker commented

2021-01-25 13:40:53 +01:00

I was able to reproduce reliable on one machine (Vega + AMD drivers) but I only have access to that machine on Friday. I took the GPU and installed it on my home machine, but that had other issues.

Jeroen Bakker self-assigned this 2021-01-25 13:41:18 +01:00

Thomas Bristow commented

2021-01-27 20:41:33 +01:00

Just found out that it dosent happen in render dev or render viewport (thats eevee and cycles)

Jeroen Bakker commented

2021-02-05 11:09:03 +01:00

It only happens when workbench does a partial x-ray. XRay is turned off but one of the materials has a transparent viewport color.
See #84938.blend for a minimal example.

It only happens when workbench does a partial x-ray. XRay is turned off but one of the materials has a transparent viewport color. See [#84938.blend](https://archive.blender.org/developer/F9650819/T84938.blend) for a minimal example.

Germano Cavalcante commented

2021-02-06 21:03:07 +01:00

In this attached file, the problem is very similar to the #83022 (Transparency in Solid View Causes Glitch Artifacts).
In fact, the same patch that is in the comment #83022#1071687 solves the problem described in this report.

In this attached file, the problem is very similar to the #83022 (Transparency in Solid View Causes Glitch Artifacts). In fact, the same patch that is in the comment #83022#1071687 solves the problem described in this report.

Germano Cavalcante commented

2021-02-25 15:04:40 +01:00

Added subscriber: @small

Germano Cavalcante commented

2021-04-02 16:59:55 +02:00

Added subscriber: @alectt

Germano Cavalcante commented

2021-04-02 17:33:11 +02:00

Closed as duplicate of #83022

Germano Cavalcante closed this issue

2021-04-02 17:33:11 +02:00

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Black Artifacts/blocks when panning viewport with certain 3D models or blend files #84938