Crash when trying to snap to instances on an object #96367

New Issue

David Black · 2022-03-12T08:01:40+01:00

David Black commented

2022-03-12 08:01:40 +01:00

System Information
Operating system: Linux Mint 20.3 Cinnamon kernel 5.13.0-35
Graphics card: 3400G

Blender Version
Broken: 3.1.0-alpha+master.8c4edd1b379d-linux.x86_64-release.tar.xz (In case helpful; commit causing the crash is possibly between 2021 Dec 27 - 28th)
Working: -

Short description of error
Possibly related to #96536 (Modifiers don't work on particle instances of a hidden object)
Crash with recent Blender 3.1 / 3.2 versions. Following conditions must apply...

Object with a particle system
Mesh object used for the particle system has 'Auto Smooth' enabled
Camera in a Collection (placed before the object with a particle system)
Camera 'Focus on Object' = the object with a particle system

Exact steps for others to reproduce the error

Open file 'Camera 'Focus on Object' - particle system issue.blend'.
with 'Camera' collection placed first, snapping the Cursor or enabling Navigation + gravity + moving using mouse/keys = crash.
Camera 'Focus on Object' - particle system issue.blend

Kind regards.

**System Information** Operating system: Linux Mint 20.3 Cinnamon kernel 5.13.0-35 Graphics card: 3400G **Blender Version** Broken: 3.1.0-alpha+master.8c4edd1b379d-linux.x86_64-release.tar.xz (In case helpful; commit causing the crash is possibly between 2021 Dec 27 - 28th) Working: - **Short description of error** Possibly related to #96536 (Modifiers don't work on particle instances of a hidden object) Crash with recent Blender 3.1 / 3.2 versions. Following conditions must apply... * Object with a particle system * Mesh object used for the particle system has 'Auto Smooth' enabled * Camera in a Collection (placed before the object with a particle system) * Camera 'Focus on Object' = the object with a particle system **Exact steps for others to reproduce the error** - Open file 'Camera 'Focus on Object' - particle system issue.blend'. - with 'Camera' collection placed first, snapping the Cursor or enabling Navigation + gravity + moving using mouse/keys = crash. [Camera 'Focus on Object' - particle system issue.blend](https://archive.blender.org/developer/F12932091/Camera__Focus_on_Object__-_particle_system_issue.blend) Kind regards.

David Black commented

2022-03-12 08:01:40 +01:00

Added subscriber: @david_black

Germano Cavalcante commented

2022-03-14 15:11:14 +01:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2022-03-14 15:11:14 +01:00

Thanks for the report but I'm not able to replicate the problem.
How do you switch the collections?
I tried drag and dropping but nothing strange happened:

Also could you test the latest daily build?
https://builder.blender.org/download/daily/

Thanks for the report but I'm not able to replicate the problem. How do you switch the collections? I tried drag and dropping but nothing strange happened: ![GIF.gif](https://archive.blender.org/developer/F12927101/GIF.gif) Also could you test the latest daily build? https://builder.blender.org/download/daily/

Germano Cavalcante commented

2022-03-14 15:11:23 +01:00

Changed status from 'Needs Triage' to: 'Needs User Info'

David Black commented

2022-03-14 16:15:52 +01:00

Thank you @mano-wii for your time and tests.

After some digging, found the first issue is a Blender 3.0 bug, and also happens in 3.1 when using the Splash screen 'Load 3.0 Settings', when previous settings are imported the new 'GPU Subdivision' option is disabled by default.

Preferences > Viewport > Subdivision > GPU Subdivision

If possible, GPU Subdivision = true would be a helpful default when older settings are imported?

`

Just tried blender-3.2.0-alpha+master.b959f603da45-linux.x86_64-release.tar.xz for you... the 3.1 (and newer) crash issue still stands while trying to use Navigation + gravity if the following apply.

3.1 crash:

Object with a particle system - linked
Camera placed in a Collection (before the linked object)
Camera 'Focus on Object' = the linked object

Thanks again.

Thank you @mano-wii for your time and tests. After some digging, found the first issue is a Blender 3.0 bug, and also happens in 3.1 when using the Splash screen 'Load 3.0 Settings', when previous settings are imported the new 'GPU Subdivision' option is disabled by default. ``` Preferences > Viewport > Subdivision > GPU Subdivision ``` If possible, GPU Subdivision = true would be a helpful default when older settings are imported? ` Just tried blender-3.2.0-alpha+master.b959f603da45-linux.x86_64-release.tar.xz for you... the 3.1 (and newer) crash issue still stands while trying to use Navigation + gravity if the following apply. 3.1 crash: * Object with a particle system - linked * Camera placed in a Collection (before the linked object) * Camera 'Focus on Object' = the linked object Thanks again.

Germano Cavalcante commented

2022-03-14 16:41:30 +01:00

Changed status from 'Needs User Info' to: 'Needs Triage'

Germano Cavalcante changed title from ~~Corner case: Collections order - linked object non-functional Modifier - Blender 3.1 crash~~ to Crash when trying to snap to instances on a linked object

2022-03-16 21:32:05 +01:00

Germano Cavalcante commented

2022-03-16 21:34:03 +01:00

I was able to replicate both problems with the new information provided.
I preferred to separate the reports because, although they may be related, each bug was introduced in different versions. And one is affected by GPU Subdvision.

I was able to replicate both problems with the new information provided. I preferred to separate the reports because, although they may be related, each bug was introduced in different versions. And one is affected by GPU Subdvision.

David Black changed title from ~~Crash when trying to snap to instances on a linked object~~ to Crash when trying to snap to instances on an object

2022-03-17 17:50:45 +01:00

David Black commented

2022-03-17 17:57:18 +01:00

Thanks for your continued help. Originally considered creating two bug reports.

Just found today, crash also happens with local (non-linked) objects.
Doesn't matter if 'GPU Subdivision' is enabled / disabled if the mesh used for a particle system has 'Auto Smooth' enabled.

First post updated.

Thanks for your continued help. Originally considered creating two bug reports. Just found today, crash also happens with local (non-linked) objects. Doesn't matter if 'GPU Subdivision' is enabled / disabled if the mesh used for a particle system has 'Auto Smooth' enabled. First post updated.

Germano Cavalcante commented

2022-03-17 18:59:18 +01:00

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

blender-admin commented

2022-05-12 09:42:43 +02:00

This issue was referenced by 295b6e8230

This issue was referenced by 295b6e8230de011dcce62716c76604dd93b9880c

Campbell Barton commented

2022-05-12 09:48:39 +02:00

Changed status from 'Confirmed' to: 'Resolved'

Campbell Barton closed this issue

2022-05-12 09:48:39 +02:00

Campbell Barton self-assigned this 2022-05-12 09:48:39 +02:00

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Crash when trying to snap to instances on an object #96367