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Geometry Nodes: Store Named Attribute does not propagate existing data when the domain changes #108520

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opened 2023-06-01 16:36:35 +02:00 by Simon Thommes · 4 comments
Simon Thommes commented 2023-06-01 16:36:35 +02:00
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System Information
Operating system: Linux-5.17.15-76051715-generic-x86_64-with-glibc2.35 64 Bits, X11 UI
Graphics card: Quadro RTX 6000/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 515.48.07

Blender Version
Broken: version: 3.6.0 Beta, branch: blender-v3.6-release, commit date: 2023-05-31 06:43, hash: e097415c2cf9
Worked: Never.

Short description of error
When using Store Named Attribute using a selection to store data on a subset of the geometry, the remaining elements keep their data that is already stored in that attribute. Because the name space of all attributes is shared, regardless of the domain, storing under the same name on a different domain will overwrite the attribute data. However, this will not implicitly propagate the existing attribute data for elements outside of the selection. That would be the expected behavior, as without a change of domain this is what happens and implicit domain conversions happen regularly in geometry nodes as necessary.

On a top face On bottom vertex
Screenshot from 2023-06-01 16-29-16.png Screenshot from 2023-06-01 16-29-30.png

Exact steps for others to reproduce the error
store_attribute_propagation.blend

**System Information** Operating system: Linux-5.17.15-76051715-generic-x86_64-with-glibc2.35 64 Bits, X11 UI Graphics card: Quadro RTX 6000/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 515.48.07 **Blender Version** Broken: version: 3.6.0 Beta, branch: blender-v3.6-release, commit date: 2023-05-31 06:43, hash: `e097415c2cf9` Worked: Never. **Short description of error** When using `Store Named Attribute` using a selection to store data on a subset of the geometry, the remaining elements keep their data that is already stored in that attribute. Because the name space of all attributes is shared, regardless of the domain, storing under the same name on a different domain will overwrite the attribute data. However, this will not implicitly propagate the existing attribute data for elements outside of the selection. That would be the expected behavior, as without a change of domain this is what happens and implicit domain conversions happen regularly in geometry nodes as necessary. | On a top face | On bottom vertex | | -- | -- | | ![Screenshot from 2023-06-01 16-29-16.png](/attachments/97d7c9d9-4197-40fb-a244-87b31e13582a) | ![Screenshot from 2023-06-01 16-29-30.png](/attachments/fc24fcac-6bc3-4b9c-8614-125a56db6c8a) | **Exact steps for others to reproduce the error** [store_attribute_propagation.blend](/attachments/2c120935-4a6f-4b71-8617-fa0aae48844e)
Screenshot from 2023-06-01 16-29-16.png
420 KiB
store_attribute_propagation.blend
904 KiB
Screenshot from 2023-06-01 16-29-30.png
428 KiB
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Simon Thommes added the
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 labels 2023-06-01 16:36:36 +02:00
Iliya Katushenock added the
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 labels 2023-06-01 16:41:32 +02:00
Iliya Katushenock commented 2023-06-01 16:43:17 +02:00
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Attributes with different domains is different ones. I really not sure if implicate domain adaptation is good in rewriting whit mask.

Attributes with different domains is different ones. I really not sure if implicate domain adaptation is good in rewriting whit mask.
Simon Thommes commented 2023-06-01 17:23:40 +02:00
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Them sharing one namespace implies imo that they are not separate attributes.
To me this is an inconsistency in behaviour because of that.

Them sharing one namespace implies imo that they are not separate attributes. To me this is an inconsistency in behaviour because of that.
Iliya Katushenock added
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 labels 2023-06-01 20:30:44 +02:00
Artyom Borodkin commented 2023-06-04 22:12:40 +02:00
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I have probably the same issue. I'm trying to use Capture Attribute (position) from one mesh to use it with Attribute Statistics running on another geometry.

image

I have probably the same issue. I'm trying to use Capture Attribute (position) from one mesh to use it with Attribute Statistics running on another geometry. ![image](/attachments/2e45d880-ad70-4e9b-99a8-7eaca8772c8a)
image.png
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Iliya Katushenock commented 2023-06-04 22:41:35 +02:00
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@Artyom-5 Please do not use this site to request support for user issues.

@Artyom-5 Please do not use this site to request support for user issues.
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Reference: blender/blender#108520
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