Geometry Nodes crashes undoing a change to an input node value #91909

New Issue

Rob James · 2021-10-03T07:23:04+02:00

Rob James commented

2021-10-03 07:23:04 +02:00

System Information
Operating system: Mac and Windows
Graphics card: Various{F10741660}

Blender Version
Broken: 3.0.0 Alpha -- October 3rd build
Worked: Unknown

Short description of error
Blender crashes after undoing a changed geometry node's input value (please see picture)

Exact steps for others to reproduce the error
-- please reference picture

Add a mesh
Setup geometry nodes like the picture. Could be any node. I used Distribute Points on Faces in this example.
Connect one of the inout fields back to the Group Input node to expose this input.
Find this value in the modifier inspector window.

If you change this value and select undo, blender crashes.
(fyi - Blender doesn't crash if you undo without changing the value)

Seems to happens with any node, any geometry as long as the node has an input you can connect to the group input block and change the default value and press undo.

Also it may be helpful to note the behavior in the picture below. Multiple input nodes can be made by plugging and unplugging values into the Group input node. And they can be rearranged without the node names updating. Pressing undo here with crash blender even without changing values.

**System Information** Operating system: Mac and Windows Graphics card: Various{[F10741660](https://archive.blender.org/developer/F10741660/Undo_Crash.jpg)} **Blender Version** Broken: 3.0.0 Alpha -- October 3rd build Worked: Unknown **Short description of error** Blender crashes after undoing a changed geometry node's input value (please see picture) **Exact steps for others to reproduce the error** ![Undo_Crash.jpg](https://archive.blender.org/developer/F10741661/Undo_Crash.jpg) -- please reference picture 1. Add a mesh 2. Setup geometry nodes like the picture. Could be any node. I used Distribute Points on Faces in this example. 3. Connect one of the inout fields back to the Group Input node to expose this input. 4. Find this value in the modifier inspector window. If you change this value and select undo, blender crashes. (fyi - Blender doesn't crash if you undo without changing the value) Seems to happens with any node, any geometry as long as the node has an input you can connect to the group input block and change the default value and press undo. Also it may be helpful to note the behavior in the picture below. Multiple input nodes can be made by plugging and unplugging values into the Group input node. And they can be rearranged without the node names updating. Pressing undo here with crash blender even without changing values. ![Node_Mismatch.jpg](https://archive.blender.org/developer/F10741762/Node_Mismatch.jpg)

Rob James commented

2021-10-03 07:23:04 +02:00

Added subscriber: @Rob-James

Pratik Borhade commented

2021-10-04 11:03:51 +02:00

Added subscriber: @PratikPB2123

Pratik Borhade commented

2021-10-04 11:03:51 +02:00

Hi, thanks for the report. Issue is same as described in #91866 , which has been further merged in #91809

Will close this as a duplicate of #91809 (Geometry nodes (Fields) Assertion failed at input_has_attribute_toggle())

Hi, thanks for the report. Issue is same as described in #91866 , which has been further merged in #91809 Will close this as a duplicate of #91809 (Geometry nodes (Fields) Assertion failed at input_has_attribute_toggle())

Pratik Borhade commented

2021-10-04 11:05:02 +02:00

Closed as duplicate of #91809

Pratik Borhade closed this issue

2021-10-04 11:05:02 +02:00

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Geometry Nodes crashes undoing a change to an input node value #91909