Crash on changing curve type from Bezier to NURBS in Geometry Nodes #94082

New Issue

Andrii Sokolov · 2021-12-15T01:14:18+01:00

Andrii Sokolov commented

2021-12-15 01:14:18 +01:00

System Information
Operating system: Windows-10-10.0.22000-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 3070 Laptop GPU/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 472.47

Blender Version
Broken: version: 3.0.0, branch: master, commit date: 2021-12-02 18:35, hash: f1cca30557
Worked: (newest version of Blender that worked as expected)

Short description of error
Blender crashes when changing spline type from Bezier to NURBS in "Geometry Nodes" tab. Geometry Nodes applied to curve itself. Changing to other spline types, changin types without Geometry Nodes applied or working with NURBS curve from beginning behaves as expected.
Have checked on another machine as well with the same result - Operating system: Windows-10-10.0.19043-SP0 64 Bits
Graphics card: NVIDIA GeForce GTX 1050/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 472.47
Same version of Blender.

Exact steps for others to reproduce the error

Create Bezier curve in Blender's default scene
Go to Geometry Nodes tab
Apply Geometry Nodes to curve created in step 1, clicking on New button
Create Curve to Points node connected to Group Input and Group Output
Add Instances on Points node after "Curve to Points"
Drag the Cubeobject from Outliner and drop it in "Geometry Nodes" graph to create Object Info node linked to "Cube"
Connect "Geometry" socket from Cube to Instancesocket on "Instances on Points" node
Make sure that Bezier curve is selected and go to Edit Mode
Inside Viewport click on Curve -> Set Spline Type -> NURBS
Blender crashes.

See attached .blend file below with 1-8 steps prepared.
Geometry_Nodes_Change_To_NURBS_Crash.blend

Video with crash event attached as well.
Blender crash (change spline to NURBS in Geo Nodes).mkv

Thanks!

**System Information** Operating system: Windows-10-10.0.22000-SP0 64 Bits Graphics card: NVIDIA GeForce RTX 3070 Laptop GPU/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 472.47 **Blender Version** Broken: version: 3.0.0, branch: master, commit date: 2021-12-02 18:35, hash: `f1cca30557` Worked: (newest version of Blender that worked as expected) **Short description of error** Blender crashes when changing spline type from Bezier to NURBS in "Geometry Nodes" tab. Geometry Nodes applied to curve itself. Changing to other spline types, changin types without Geometry Nodes applied or working with NURBS curve from beginning behaves as expected. Have checked on another machine as well with the same result - Operating system: Windows-10-10.0.19043-SP0 64 Bits Graphics card: NVIDIA GeForce GTX 1050/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 472.47 Same version of Blender. **Exact steps for others to reproduce the error** - Create **Bezier curve** in Blender's default scene - Go to **Geometry Nodes** tab - Apply Geometry Nodes to curve created in step 1, clicking on **New** button - Create **Curve to Points** node connected to Group Input and Group Output - Add **Instances on Points** node after "Curve to Points" - Drag the **Cube**object from Outliner and drop it in "Geometry Nodes" graph to create **Object Info** node linked to "Cube" - Connect "Geometry" socket from **Cube** to **Instance**socket on "Instances on Points" node - Make sure that Bezier curve is selected and go to **Edit Mode** - Inside Viewport click on **Curve -> Set Spline Type -> NURBS** - Blender crashes. ### See attached .blend file below with 1-8 steps prepared. [Geometry_Nodes_Change_To_NURBS_Crash.blend](https://archive.blender.org/developer/F12743829/Geometry_Nodes_Change_To_NURBS_Crash.blend) Video with crash event attached as well. [Blender crash (change spline to NURBS in Geo Nodes).mkv](https://archive.blender.org/developer/F12743867/Blender_crash__change_spline_to_NURBS_in_Geo_Nodes_.mkv) ### Thanks!

Andrii Sokolov commented

2021-12-15 01:14:18 +01:00

Added subscriber: @Android135

Fen commented

2021-12-15 01:33:16 +01:00

Added subscriber: @chemicalcrux

Fen commented

2021-12-15 01:33:16 +01:00

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

Fen commented

2021-12-15 01:33:16 +01:00

Can confirm, on both 3.0.0 and on a debug build of 3.1.0. Non-debug builds are getting an access violation.

I get the following assertion failure in a 3.1.0 debug build: P2662

I believe that lite debug build was built from a90c356467

Can confirm, on both 3.0.0 and on a debug build of 3.1.0. Non-debug builds are getting an access violation. I get the following assertion failure in a 3.1.0 debug build: [P2662](https://archive.blender.org/developer/P2662.txt) I believe that lite debug build was built from a90c356467

Hans Goudey self-assigned this 2021-12-15 01:54:41 +01:00

blender-admin commented

2021-12-15 01:57:45 +01:00

This issue was referenced by 0a6b6eb13b

This issue was referenced by 0a6b6eb13ba63ab355903296cb0c6b3afdc46225

blender-admin commented

2021-12-15 01:57:45 +01:00

This issue was referenced by 67b657f07c

This issue was referenced by 67b657f07c96c5782ebf603ab36af607168d7acb

Hans Goudey commented

2021-12-15 01:58:08 +01:00

Changed status from 'Confirmed' to: 'Resolved'

Hans Goudey closed this issue

2021-12-15 01:58:08 +01:00

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Crash on changing curve type from Bezier to NURBS in Geometry Nodes #94082