Regression: Realize instance node crashes Blender #100562

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Silas Opel · 2022-08-22T14:15:55+02:00

Silas Opel commented

2022-08-22 14:15:55 +02:00

System Information
Operating system: Windows-10-10.0.22000-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 2070 SUPER/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 516.59

Blender Version
Broken: version: 3.4.0, 3.3
Worked: (3.2)
Caused by b876ce2a4a

Short description of error
Shorter just to try it in the sample file. Its a dynamic paint setup that produces a vertex group. This group is used on a plane with a geonodes setup.

Exact steps for others to reproduce the error

Drag the realize Instance node between the end of the node setup
#100562.blend

**System Information** Operating system: Windows-10-10.0.22000-SP0 64 Bits Graphics card: NVIDIA GeForce RTX 2070 SUPER/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 516.59 **Blender Version** Broken: version: 3.4.0, 3.3 Worked: (3.2) Caused by b876ce2a4a **Short description of error** Shorter just to try it in the sample file. Its a dynamic paint setup that produces a vertex group. This group is used on a plane with a geonodes setup. **Exact steps for others to reproduce the error** - Drag the realize Instance node between the end of the node setup [#100562.blend](https://archive.blender.org/developer/F13412268/T100562.blend)

Silas Opel commented

2022-08-22 14:15:55 +02:00

Added subscriber: @DarkKnight

Iliya Katushenock commented

2022-08-22 15:09:55 +02:00

Added subscriber: @mod_moder

Iliya Katushenock commented

2022-08-22 15:09:55 +02:00

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

Iliya Katushenock commented

2022-08-22 15:09:55 +02:00

The problem is in the Join Geometry node.
You can recreate just like this:

RelizeInstanceBug.blend
No stack, looks like a null reference or something, most likely an attempt to make an attribute from a dynamo paint, but I'm not sure

1) The problem is in the `Join Geometry` node. 2) You can recreate just like this: ![image.png](https://archive.blender.org/developer/F13411187/image.png) [RelizeInstanceBug.blend](https://archive.blender.org/developer/F13411190/RelizeInstanceBug.blend) 3) No stack, looks like a null reference or something, most likely an attempt to make an attribute from a dynamo paint, but I'm not sure

Iliya Katushenock commented

2022-08-22 15:32:32 +02:00

And also, in earlier versions, the attribute was either ignored and did not cause a failure, or it was obviously not created correctly (this is a white gradient)

![image.png](https://archive.blender.org/developer/F13411241/image.png) And also, in earlier versions, the attribute was either ignored and did not cause a failure, or it was obviously not created correctly (this is a white gradient)

Iliya Katushenock commented

2022-08-22 17:49:19 +02:00

I found the reason. The vertex group and the color attribute are converted to attributes under the same name

Pratik Borhade commented

2022-08-23 05:20:32 +02:00

Added subscriber: @PratikPB2123

Pratik Borhade commented

2022-08-23 05:20:32 +02:00

I can confirm the crash too. Raising the priority.

The vertex group and the color attribute are converted to attributes under the same name

This seems the reason behind crash. Renaming either of them doesn't cause the crash

I can confirm the crash too. Raising the priority. > The vertex group and the color attribute are converted to attributes under the same name This seems the reason behind crash. Renaming either of them doesn't cause the crash

Pratik Borhade commented

2022-08-23 05:46:43 +02:00

Added subscriber: @JacquesLucke

Pratik Borhade commented

2022-08-23 05:46:43 +02:00

Introduced in b876ce2a4a
cc @JacquesLucke ^

Introduced in b876ce2a4a cc @JacquesLucke ^

Pratik Borhade changed title from ~~Realize instance node crashes Blender~~ to Regression: Realize instance node crashes Blender

2022-08-23 05:47:05 +02:00

Iliya Katushenock commented

2022-08-23 05:50:50 +02:00

Full way to recreate:
Geometry canvas dynamic painting
Create a group of vertices, name simular as painting output attribute
Geometry nodes: A node to `Join Geometry``. Add any other geometry
Crash when a node tries to create a slice from an empty span

Full way to recreate: Geometry canvas dynamic painting Create a group of vertices, name simular as painting output attribute Geometry nodes: A node to `Join Geometry``. Add any other geometry Crash when a node tries to create a slice from an empty [span ](https://developer.blender.org/diffusion/B/browse/master/source/blender/geometry/intern/realize_instances.cc$301)

blender-admin commented

2022-08-23 10:57:28 +02:00

This issue was referenced by 5d67b52441

This issue was referenced by 5d67b524412d0dab936170eef65c508930ba4c30

Jacques Lucke commented

2022-08-23 10:57:40 +02:00

Changed status from 'Confirmed' to: 'Resolved'

Jacques Lucke closed this issue

2022-08-23 10:57:40 +02:00

Jacques Lucke self-assigned this 2022-08-23 10:57:40 +02:00

Silas Opel commented

2022-08-23 11:42:27 +02:00

Thats nice. Thanks.

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Regression: Realize instance node crashes Blender #100562