Regression: EEVEE: Crash on extract UV from evaluated mesh with open UV Editor and selection #113358

New Issue

gummi · 2023-10-06T19:19:02+02:00

gummi commented

2023-10-06 19:19:02 +02:00

System Information
Operating system: Windows 10 Pro
Graphics card: NVIDIA GeForce RTX 3060 Ti

Blender Version
Broken: version: 3.5.0 Alpha, branch: master, commit date: 2023-01-13 23:22, hash: rB3a3d9488a163
Worked: version: 3.5.0 Alpha, branch: master, commit date: 2023-01-08 22:09, hash: rBe7a554e551e4

Short description of error

Some details that make this file non-standard:

The object has GeoNodes attached that are supposed to write a face corner/Vector2D Attribute 'UVMap'
The material specifically references the UVMap Attribute through an Attribute Node
The underlying Mesh data block does have a UV layer, but not one called UVMap

What this setup is supposed to achieve is a basic cube unwrap for base materials though UVMap as written by the Geo Nodes, with the other UV layer serving as a layout for baked lighting data.

From the outside, it looks like the specific references to an UV layer that is only part of the evaluated mesh is what causes the issue. Since the crash only occurs for the specific UV Editor window in the UV Editing workspace, some of the settings there might also play a role. The crash report UVCrash.crash.txt is attached.

Exact steps for others to reproduce the error

Add Geometry Nodes modifier to Default Cube.
Geometry Nodes node tree:
a. Add Store Named Attribute.
b. Store attribute on geometry from Group Input and put it to Group Output.
c. Settings:
- Attribute type: 2D Vector.
- Attribute domain: Face Corner.
- Attribute name: UVMap_2.
Add Material.
Material Node tree:
a. Add Attribute input node.
- Attribute Name: UVMap_2.
  b. Put it to Material Output node as Surfacea.
Add UV Editor in window.
Go to Edit mode.
Select something.
Switch view mode to Material/Render.

Steps to Crash in attached file

Open the file UVCrash.blend.
Go to the UVEditing workspace (if not already selected).
Select the broken obj and go into edit mode.
Try selecting one or more faces (select all, mouse picking and box select crashed for me, but i didn't test all methods).
at this point, blender should have crashed with an EXCEPTION_ACCESS_VIOLATION.

Workarounds
Any one of these will prevent a crash:

Deactivating ~~viewport display~~ edit mode display of the Geometry Nodes attached to broken obj.
Applying the Geometry Nodes.
Adding a UVMap layer to broken obj.
Removing the reference to UVMap in the Shader Editor.
Using any UVEditor Window outside of the one in the UV Editing Workspace or selecting when no UV Editor is active.

**System Information** Operating system: Windows 10 Pro Graphics card: NVIDIA GeForce RTX 3060 Ti **Blender Version** Broken: version: 3.5.0 Alpha, branch: master, commit date: 2023-01-13 23:22, hash: `rB3a3d9488a163` Worked: version: 3.5.0 Alpha, branch: master, commit date: 2023-01-08 22:09, hash: `rBe7a554e551e4` **Short description of error** Some details that make this file non-standard: - The object has GeoNodes attached that are supposed to write a face corner/Vector2D Attribute 'UVMap' - The material specifically references the `UVMap` Attribute through an Attribute Node - The underlying `Mesh` data block does have a UV layer, but not one called `UVMap` What this setup is supposed to achieve is a basic cube unwrap for base materials though `UVMap` as written by the Geo Nodes, with the other UV layer serving as a layout for baked lighting data. From the outside, it looks like the specific references to an UV layer that is only part of the evaluated mesh is what causes the issue. Since the crash only occurs for the specific UV Editor window in the `UV Editing` workspace, some of the settings there might also play a role. The crash report [UVCrash.crash.txt](/attachments/8f9fd2ec-7a71-4c8e-b83d-9a282f2d05f3) is attached. **Exact steps for others to reproduce the error** 1. Add Geometry Nodes modifier to Default Cube. 2. Geometry Nodes node tree: a. Add `Store Named Attribute`. b. Store attribute on geometry from `Group Input` and put it to `Group Output`. c. Settings: - Attribute type: `2D Vector`. - Attribute domain: `Face Corner`. - Attribute name: `UVMap_2`. 3. Add Material. 4. Material Node tree: a. Add `Attribute` input node. - Attribute Name: `UVMap_2`. b. Put it to `Material Output` node as `Surfacea`. 5. Add `UV Editor` in window. 6. Go to Edit mode. 7. Select something. 8. Switch view mode to `Material`/`Render`. **Steps to Crash in attached file** 1. Open the file [UVCrash.blend](/attachments/e5f205ea-25b1-4c87-8062-a22384575e09). 2. Go to the UVEditing workspace (if not already selected). 3. Select the `broken obj` and go into edit mode. 4. Try selecting one or more faces (select all, mouse picking and box select crashed for me, but i didn't test all methods). 5. at this point, blender should have crashed with an `EXCEPTION_ACCESS_VIOLATION`. **Workarounds** Any one of these will prevent a crash: 1. Deactivating ~~viewport display~~ _edit mode display_ of the Geometry Nodes attached to `broken obj`. 2. Applying the Geometry Nodes. 3. Adding a `UVMap` layer to `broken obj`. 4. Removing the reference to `UVMap` in the Shader Editor. 5. Using any UVEditor Window outside of the one in the `UV Editing` Workspace or selecting when no UV Editor is active.

UVCrash.crash.txt

32 KiB

UVCrash.blend

3.0 MiB

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gummi added the