obj.to_mesh() crashes on mesh with armature modifier, when run 2x #61264

New Issue

Jose Conseco · 2019-02-07T01:11:56+01:00

Jose Conseco commented

2019-02-07 01:11:56 +01:00

Hi
In the blend file below I have simple plane mesh, with armature modifier (armature is None). And simple blender operator script.
If I redo simple blender operator (by changing operator F6 property), blender will crash, on line:

obj.to_mesh(bpy.context.depsgraph, apply_modifiers, calc_undeformed=False)

If I remove the armature modifier, or set armature modifier object to skeleton, it works ok.
to_mesh_crash.blend

Hi In the blend file below I have simple plane mesh, with armature modifier (armature is None). And simple blender operator script. If I redo simple blender operator (by changing operator F6 property), blender will crash, on line: ``` obj.to_mesh(bpy.context.depsgraph, apply_modifiers, calc_undeformed=False) ``` If I remove the armature modifier, or set armature modifier object to skeleton, it works ok. [to_mesh_crash.blend](https://archive.blender.org/developer/F6532844/to_mesh_crash.blend)

Jose Conseco commented

2019-02-07 01:11:56 +01:00

Added subscriber: @JoseConseco

Sebastian Parborg commented

2019-02-07 12:46:25 +01:00

Added subscriber: @ZedDB

Sergey Sharybin was assigned by Sebastian Parborg

2019-02-07 12:46:25 +01:00

Sebastian Parborg commented

2019-02-07 12:46:25 +01:00

I'm getting the following assert when changing the properties:
BLI_assert failed: blender/source/blender/depsgraph/intern/depsgraph_query.cc:145, DEG_get_evaluated_scene(), at 'scene_cow != __null && DEG::deg_copy_on_write_is_expanded(&scene_cow->id)'

I'm getting the following assert when changing the properties: `BLI_assert failed: blender/source/blender/depsgraph/intern/depsgraph_query.cc:145, DEG_get_evaluated_scene(), at 'scene_cow != __null && DEG::deg_copy_on_write_is_expanded(&scene_cow->id)'`

Jose Conseco commented

2019-03-05 13:41:14 +01:00

I just noticed when I add 'USE_EVAL_DATA' to operator bl_options
bl_options = {"REGISTER", "UNDO","USE_EVAL_DATA"}
Then crash won't happen. I'm not sure if this bug should be marked as fixed then.

I just noticed when I add 'USE_EVAL_DATA' to operator bl_options bl_options = {"REGISTER", "UNDO","USE_EVAL_DATA"} Then crash won't happen. I'm not sure if this bug should be marked as fixed then.

Jacques Lucke commented

2019-03-14 15:48:03 +01:00

Added subscriber: @JacquesLucke

Jacques Lucke commented

2019-03-14 15:48:03 +01:00

Still should not crash I guess..

Jose Conseco commented

2019-04-04 19:45:53 +02:00

Changed status from 'Open' to: 'Resolved'

Jose Conseco closed this issue

2019-04-04 19:45:53 +02:00

Jose Conseco commented

2019-04-04 19:45:53 +02:00

I just tested today build 4th of april, and this file no longer crashes. It seems bug was fixed.

Peter Gervai commented

2020-01-04 13:55:20 +01:00

Added subscriber: @grin-4

Peter Gervai commented

2020-01-04 13:55:20 +01:00

v2.80

I'm a (let's say "first time" though I have been playing with B since forever) enduser, first start of v2.xx and doing really simple edits (coloring the default cube on the default screen), and got bitten by this.

blender(BLI_system_backtrace+0x33) [0x559d50e2ff33]
blender(DEG_get_evaluated_scene+0x30) [0x559d50e39710]
blender(wm_event_do_handlers+0xd7) [0x559d5101b9b7]
blender(WM_main+0x20) [0x559d51011110]
blender(main+0x2ae) [0x559d50bb2fae]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xeb) [0x7f9db4fa7bbb]
blender(_start+0x2a) [0x559d50bea45a]
BLI_assert failed: /build/blender-1XEhGi/blender-2.80+dfsg/source/blender/depsgraph/intern/depsgraph_query.cc:159, DEG_get_evaluated_scene(), at 'scene_cow != __null && DEG::deg_copy_on_write_is_expanded(&scene_cow->id)'
Aborted

I really didn't do anything special, I was trying to add a simple spotlight, more specifically adjust its spot size using the slider. Bam, gone.

More details:
This is Debian v2.80.75, packaged.
It may be library incompatiblity, and since downloaded versions seem not to crash it may not be yours to fix. However it is possibly good to be aware of the problem, even I cannot point out the specific cause (unless I find a way to reliably crash it again).

v2.80 I'm a (let's say "first time" though I have been playing with B since forever) enduser, first start of v2.xx and doing really simple edits (coloring the default cube on the default screen), and got bitten by this. ``` blender(BLI_system_backtrace+0x33) [0x559d50e2ff33] blender(DEG_get_evaluated_scene+0x30) [0x559d50e39710] blender(wm_event_do_handlers+0xd7) [0x559d5101b9b7] blender(WM_main+0x20) [0x559d51011110] blender(main+0x2ae) [0x559d50bb2fae] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xeb) [0x7f9db4fa7bbb] blender(_start+0x2a) [0x559d50bea45a] BLI_assert failed: /build/blender-1XEhGi/blender-2.80+dfsg/source/blender/depsgraph/intern/depsgraph_query.cc:159, DEG_get_evaluated_scene(), at 'scene_cow != __null && DEG::deg_copy_on_write_is_expanded(&scene_cow->id)' Aborted ``` I really didn't do anything special, I was trying to add a simple spotlight, more specifically adjust its spot size using the slider. Bam, gone. *More details:* This is Debian v2.80.75, packaged. It may be library incompatiblity, and since downloaded versions seem not to crash it may not be yours to fix. However it is possibly good to be aware of the problem, even I cannot point out the specific cause (unless I find a way to reliably crash it again).

Sign in to join this conversation.

No Label

Download

What's New

Blender Studio

Manual

Developers Blog

Documentation

Benchmark

Blender Conference

Development Fund

One-time Donations

obj.to_mesh() crashes on mesh with armature modifier, when run 2x #61264