Custom attributes created in GN do not override the built-in attributes #87373

New Issue

slowburn · 2021-04-10T14:24:46+02:00

slowburn commented

2021-04-10 14:24:46 +02:00

System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: Radeon (TM) RX 470 Graphics ATI Technologies Inc. 4.5.14757 Core Profile Context 20.11.2 27.20.14501.18003

Blender Version
Broken: version: 2.93.0 Alpha, branch: master, commit date: 2021-04-06 15:01, hash: b61b34a5d2

Short description of error
If a custom attribute, created with geometry nodes, has the same name as one of the built-in attributes, it cannot be used in the attribute input node with Cycles. Full list of locked attributes is here: https://blender.stackexchange.com/questions/14262/what-can-you-call-from-the-attribute-node#14267
Also capitalization is important, so for example "color" doesn't work, but "Color" does.

Exact steps for others to reproduce the error
Create the same node setup as in the screenshots and use attribute names from the list.

**System Information** Operating system: Windows-10-10.0.18362-SP0 64 Bits Graphics card: Radeon (TM) RX 470 Graphics ATI Technologies Inc. 4.5.14757 Core Profile Context 20.11.2 27.20.14501.18003 **Blender Version** Broken: version: 2.93.0 Alpha, branch: master, commit date: 2021-04-06 15:01, hash: `b61b34a5d2` **Short description of error** If a custom attribute, created with geometry nodes, has the same name as one of the built-in attributes, it cannot be used in the attribute input node with Cycles. Full list of locked attributes is here: https://blender.stackexchange.com/questions/14262/what-can-you-call-from-the-attribute-node#14267 Also capitalization is important, so for example "color" doesn't work, but "Color" does. ![attributes1.jpg](https://archive.blender.org/developer/F9928166/attributes1.jpg) ![attributes2.jpg](https://archive.blender.org/developer/F9928168/attributes2.jpg) **Exact steps for others to reproduce the error** Create the same node setup as in the screenshots and use attribute names from the list.

slowburn commented

2021-04-10 14:24:46 +02:00

Added subscriber: @slowburn

Charlie Jolly commented

2021-04-10 15:19:08 +02:00

Added subscriber: @CharlieJolly

Germano Cavalcante commented

2021-04-13 21:10:14 +02:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2021-04-13 21:10:14 +02:00

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

Germano Cavalcante commented

2021-04-13 21:10:14 +02:00

I cannot reproduce this in current development versions of Blender:

Please try the latest daily build: https://builder.blender.org/download/

If the problem persists, please give us more clear instructions on how to reproduce it from scratch.

tmp.blend

I cannot reproduce this in current development versions of Blender: Please try the latest daily build: https://builder.blender.org/download/ If the problem persists, please give us more clear instructions on how to reproduce it from scratch. [tmp.blend](https://archive.blender.org/developer/F9932371/tmp.blend)

slowburn commented

2021-04-13 23:19:00 +02:00

It's still present in the latest version. To reproduce the issue, you have to use Cycles render engine, and attribute name has to be the same as one of the hardcoded attributes, like "density", "flame", "color", etc. Eevee doesn't have this bug for some reason, even though it doesn't even support custom attributes yet.
attr_bug.blend

It's still present in the latest version. To reproduce the issue, you have to use Cycles render engine, and attribute name has to be the same as one of the hardcoded attributes, like "density", "flame", "color", etc. Eevee doesn't have this bug for some reason, even though it doesn't even support custom attributes yet. [attr_bug.blend](https://archive.blender.org/developer/F9932553/attr_bug.blend)

Germano Cavalcante commented

2021-04-14 16:04:42 +02:00

In the file you forgot to rename Vertex Color from "Col" to "color".
The problem does not seem to be really related to Geometry Nodes.
Apparently the problem is that the name "color" does not work in Cycles.

If this is the case, this report needs to be either edited or closed (to create a new one).

In the file you forgot to rename Vertex Color from "Col" to "color". The problem does not seem to be really related to Geometry Nodes. Apparently the problem is that the name "color" does not work in Cycles. If this is the case, this report needs to be either edited or closed (to create a new one).

Germano Cavalcante commented

2021-04-14 16:40:45 +02:00

Closed as duplicate of #87494

Germano Cavalcante closed this issue

2021-04-14 16:40:45 +02:00

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Custom attributes created in GN do not override the built-in attributes #87373