Attribute node breaks EEVEE transparency #100811

New Issue

Denver P. · 2022-09-04T11:28:51+02:00

Denver P. commented

2022-09-04 11:28:51 +02:00

System Information
Operating system:
Ubuntu 22.04
Graphics card:
Radeon RX 6600 XT

Blender Version
3.2.2

Short description of error
When using the 'Attribute' node in an EEVEE material, transparency using the blend modes 'Alpha Hashed' and 'Alpha Clip' no longer works (visually the same as if blend mode is set to Opaque)

Exact steps for others to reproduce the error

Default startup file
Use EEVEE
Change blend mode on default cube material to 'Alpha Hashed'
Change alpha on material to a value between 0 and 1 (e.g. 0.5)
Plug in an 'Attribute' node to any value on the material, use any attribute name (including invalid attributes that don't exist)
When viewing in material preview or rendered mode, the semi-transparent blending effect of the material will break

**System Information** Operating system: Ubuntu 22.04 Graphics card: Radeon RX 6600 XT **Blender Version** 3.2.2 **Short description of error** When using the 'Attribute' node in an EEVEE material, transparency using the blend modes 'Alpha Hashed' and 'Alpha Clip' no longer works (visually the same as if blend mode is set to Opaque) **Exact steps for others to reproduce the error** 1. Default startup file 2. Use EEVEE 3. Change blend mode on default cube material to 'Alpha Hashed' 4. Change alpha on material to a value between 0 and 1 (e.g. 0.5) 5. Plug in an 'Attribute' node to any value on the material, use any attribute name (including invalid attributes that don't exist) 6. When viewing in material preview or rendered mode, the semi-transparent blending effect of the material will break

Denver P. commented

2022-09-04 11:28:51 +02:00

Added subscriber: @Obsyden

Pratik Borhade commented

2022-09-05 07:55:28 +02:00

Added subscriber: @PratikPB2123

Pratik Borhade commented

2022-09-05 07:55:28 +02:00

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

Pratik Borhade commented

2022-09-05 07:55:28 +02:00

Thanks for the report. I'm not able to reproduce this issue. Could you redo the bug in uploaded file?:
#100811.blend

Thanks for the report. I'm not able to reproduce this issue. Could you redo the bug in uploaded file?: [#100811.blend](https://archive.blender.org/developer/F13460566/T100811.blend)

Denver P. commented

2022-09-05 09:22:32 +02:00

Confirmed again, cube is solid despite alpha being less than 1. When disconnecting the attribute node, cube goes back to being semi-transparent.

![image.png](https://archive.blender.org/developer/F13460853/image.png) Confirmed again, cube is solid despite alpha being less than 1. When disconnecting the attribute node, cube goes back to being semi-transparent. ![image.png](https://archive.blender.org/developer/F13460863/image.png)

Sun Kim commented

2022-09-06 12:55:15 +02:00

Added subscriber: @persun

Sun Kim commented

2022-09-06 12:55:15 +02:00

I can't reproduce this but it seems this patch dd19d6456a is trying to fix this?

It's merged into 3.4 alpha. (Also probably coming to 3.3.1 instead of 3.3.0.)

I can't reproduce this but it seems this patch dd19d6456abf is trying to fix this? It's merged into 3.4 alpha. (Also probably coming to 3.3.1 instead of 3.3.0.)

Pratik Borhade commented

2022-09-06 15:50:49 +02:00

I wasn't able to reproduce in 3.2.2 itself so I'm not sure if updating version will help. But can be checked just to eliminate the doubt: https://builder.blender.org/download/daily

Pratik Borhade commented

2022-09-17 04:30:34 +02:00

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

Omar Emara commented

2022-09-28 11:36:20 +02:00

Added subscriber: @OmarEmaraDev

Omar Emara commented

2022-09-28 11:36:20 +02:00

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

Omar Emara commented

2022-09-28 11:36:20 +02:00

I can reproduce the issue on 3.2, but is fixed by the commit mentioned by Sun Kim. Can you try the 3.4 daily build as mentioned above to confirm that it is fixed?

Pauan commented

2022-09-29 14:43:33 +02:00

Added subscriber: @pauanyu_blender

Omar Emara commented

2022-10-12 22:28:11 +02:00

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

Omar Emara closed this issue

2022-10-12 22:28:11 +02:00

Omar Emara commented

2022-10-12 22:28:11 +02:00

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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Attribute node breaks EEVEE transparency #100811