Weird Pixel when using alpha in viewport display #83383

New Issue

Julian · 2020-12-04T00:57:49+01:00

Julian commented

2020-12-04 00:57:49 +01:00

System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: Radeon (TM) RX 480 Graphics ATI Technologies Inc. 4.5.13587 Core Profile Context 20.2.2 26.20.15019.19000

Blender Version
Broken: version: 2.91.0, branch: master, commit date: 2020-11-25 08:34, hash: 0f45cab862 2.91.0 / 2.92.0 Alpha
Worked: 2.90.0

Short description of error
Every time I use alpha in the viewport display I get a graphics bug. Its only in Solid View. Doesnt happen in small simple scenes afaik. Blender 2.90.0 works perfectly. 2.91.0 and higher doesnt work.
I discovered this while using the botaniq addon from Plygoniq. Some people with polygoniq addons have this issue. Looks like they use a lot of this alpha in viewport display thing. Some people say they have the same problem and some people say they have no problems. I think its an AMD problem. I saw one guy with the same problem with a RX 580 and I saw one guy with a 2070 without problems. I also tested it on a Intel i3 6100 without problems.

Exact steps for others to reproduce the error

Open the Junk Shop file ( or any other "complex" file is also ok I guess )
make sure you are in solid view
choose a object and go to the material properties
go to viewport display and change the alpha of the color to a value between 0 and 0.999

Blender 2.blend

**System Information** Operating system: Windows-10-10.0.19041-SP0 64 Bits Graphics card: Radeon (TM) RX 480 Graphics ATI Technologies Inc. 4.5.13587 Core Profile Context 20.2.2 26.20.15019.19000 **Blender Version** Broken: version: 2.91.0, branch: master, commit date: 2020-11-25 08:34, hash: `0f45cab862` 2.91.0 / 2.92.0 Alpha Worked: 2.90.0 **Short description of error** Every time I use alpha in the viewport display I get a graphics bug. Its only in Solid View. Doesnt happen in small simple scenes afaik. Blender 2.90.0 works perfectly. 2.91.0 and higher doesnt work. I discovered this while using the botaniq addon from Plygoniq. Some people with polygoniq addons have this issue. Looks like they use a lot of this alpha in viewport display thing. Some people say they have the same problem and some people say they have no problems. I think its an AMD problem. I saw one guy with the same problem with a RX 580 and I saw one guy with a 2070 without problems. I also tested it on a Intel i3 6100 without problems. **Exact steps for others to reproduce the error** - Open the Junk Shop file ( or any other "complex" file is also ok I guess ) - make sure you are in solid view - choose a object and go to the material properties - go to viewport display and change the alpha of the color to a value between 0 and 0.999 ![2.jpg](https://archive.blender.org/developer/F9464199/2.jpg) ![1.jpg](https://archive.blender.org/developer/F9464198/1.jpg) [Blender 2.blend](https://archive.blender.org/developer/F9463796/Blender_2.blend)

Julian commented

2020-12-04 00:57:49 +01:00

Added subscriber: @Julian-4