Copy material to selected causes crash when receiving object doesn't have a material slot #114552

New Issue

slowburn · 2023-11-06T20:44:11+01:00

slowburn commented

2023-11-06 20:44:11 +01:00

System Information
Operating system: Windows-11 64 Bits
Graphics card: NVIDIA GeForce RTX 3060 Ti/PCIe/SSE2 NVIDIA Corporation 4.6.0 NVIDIA 545.92

Blender Version
Broken: version: 4.0.0 Beta, branch: blender-v4.0-release, commit date: 2023-11-04 10:02, hash: 23e3f8f56396
Worked: never? (3.0 crashes too)

Short description of error
This happens with objects that have linked mesh data. Then if you add a material to only one of them that is linked to Object and try to copy it to other objects with Copy material to selected tool in materials tab, Blender crashes.
Doing it through Link/Transfer Data menu works fine though.

Exact steps for others to reproduce the error

Edit > Preferences > Editing > Link Material to > Object
Create a new object
Make a linked duplicate with Alt+D
Select one object and add a material (It should be linked to Object)
Add other object to selection and use Copy material to selected operator

**System Information** Operating system: Windows-11 64 Bits Graphics card: NVIDIA GeForce RTX 3060 Ti/PCIe/SSE2 NVIDIA Corporation 4.6.0 NVIDIA 545.92 **Blender Version** Broken: version: 4.0.0 Beta, branch: blender-v4.0-release, commit date: 2023-11-04 10:02, hash: `23e3f8f56396` Worked: never? (3.0 crashes too) **Short description of error** This happens with objects that have linked mesh data. Then if you add a material to only one of them that is linked to Object and try to copy it to other objects with `Copy material to selected` tool in materials tab, Blender crashes. Doing it through `Link/Transfer Data` menu works fine though. **Exact steps for others to reproduce the error** - `Edit > Preferences > Editing > Link Material to > Object` - Create a new object - Make a linked duplicate with `Alt+D` - Select one object and add a material (It should be linked to Object) - Add other object to selection and use `Copy material to selected` operator

slowburn added the

labels 2023-11-06 20:44:12 +01:00

Pratik Borhade commented

2023-11-07 06:03:58 +01:00

Hi, thanks for the report. Unable to confirm the crash in 4.0-abe925d0c671
Does it happen with factory settings?: File > Defaults > Load Factory Settings

Please open Blender's installation directory and double click on the blender_debug_gpu.cmd. This will start Blender in debug mode and create log files. Try to reproduce the
error again. Once it crashes or you close Blender manually the Windows Explorer should open and show you up to two files, a debug log and the system information. Add them
to your bug report by clicking on the upload button as shown in the screenshot below or via drag and drop. Please also upload the crash log located in C:\Users\[your username]\AppData\Local\Temp\[project name].crash.txt (or simply type %TEMP% into the path bar of the Windows Explorer).

Hi, thanks for the report. Unable to confirm the crash in 4.0-`abe925d0c671` Does it happen with factory settings?: `File > Defaults > Load Factory Settings` > Please open Blender's installation directory and double click on the `blender_debug_gpu.cmd`. This will start Blender in debug mode and create log files. Try to reproduce the error again. Once it crashes or you close Blender manually the Windows Explorer should open and show you up to two files, a debug log and the system information. Add them to your bug report by clicking on the upload button as shown in the screenshot below or via drag and drop. Please also upload the crash log located in `C:\Users\[your username]\AppData\Local\Temp\[project name].crash.txt` (or simply type `%TEMP%` into the path bar of the Windows Explorer).![2019_12_04_upload_icon_developer_blender_org.png](https://archive.blender.org/developer/F8190038/2019_12_04_upload_icon_developer_blender_org.png)

Pratik Borhade added

Status

Needs Information from User

and removed

Status

Needs Triage

labels 2023-11-07 06:04:10 +01:00

slowburn commented

2023-11-07 17:14:45 +01:00

So turns out it's caused by Link Materials To option in Preferences>Editing>New Objects
When it's set to Object, it's possible to create a material slot only on one instance of the object while other instance remains empty. Then if you try to copy material it expects there to be a material slot (because object data is linked) and crashes when it doesn't find one.

So turns out it's caused by `Link Materials To` option in Preferences>Editing>New Objects When it's set to `Object`, it's possible to create a material slot only on one instance of the object while other instance remains empty. Then if you try to copy material it expects there to be a material slot (because object data is linked) and crashes when it doesn't find one.

material link.jpg

17 KiB

Pratik Borhade changed title from ~~Copy material to selected opeartor causes a crash when receiving object doesn't have a material slot~~ to Copy material to selected causes crash when receiving object doesn't have a material slot

2023-11-08 12:11:01 +01:00

Pratik Borhade commented

2023-11-08 12:13:48 +01:00