Overrides with particle systems crash #72619

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Paul · 2019-12-21T02:00:33+01:00

Paul commented

2019-12-21 02:00:33 +01:00

System Information
Affects all operating systems

Blender Version
Broken: 2.81a and latest master

When adding a particle system to a linked mesh with an override, reopening the file crashes instantly.

Create an object, parent it to an armature.
Link the object into a new file.
Give the object data-block an override (in the outliner: ID Data > Add Library Override).
Add a particle system.
Save the project
Reopen the file.

linked_object_particle_system.blend

**System Information** Affects all operating systems **Blender Version** Broken: 2.81a and latest master **When adding a particle system to a linked mesh with an override, reopening the file crashes instantly.** 1. Create an object, parent it to an armature. 2. Link the object into a new file. 3. Give the object data-block an override (in the outliner: *ID Data > Add Library Override*). 4. Add a particle system. 5. Save the project 6. Reopen the file. [linked_object_particle_system.blend](https://archive.blender.org/developer/F8239227/linked_object_particle_system.blend)

Paul commented

2019-12-21 02:00:33 +01:00

Added subscriber: @PaulGriffin

Oliver Weissbarth commented

2019-12-21 10:45:42 +01:00

Added subscriber: @oweissbarth

Oliver Weissbarth commented

2019-12-21 10:45:42 +01:00

I can reproduce this on Windows 10 with 2.81a

Robert Guetzkow commented

2019-12-21 14:32:41 +01:00

Added subscriber: @rjg

Robert Guetzkow commented

2019-12-21 14:32:41 +01:00

Looks like the modifier data isn't properly populated.

psys_emitter_customdata_mask(ParticleSystem * psys, CustomData_MeshMasks * r_cddata_masks) Line 1857
requiredDataMask(Object * UNUSED_ob, ModifierData * md, CustomData_MeshMasks * r_cddata_masks) Line 91
modifiers_calcDataMasks(Scene * scene, Object * ob, ModifierData * md, CustomData_MeshMasks * final_datamask, int required_mode, ModifierData * previewmd, const CustomData_MeshMasks * previewmask) Line 557
mesh_calc_modifiers(Depsgraph * depsgraph, Scene * scene, Object * ob, int useDeform, const bool need_mapping, const CustomData_MeshMasks * dataMask, const int index, const bool use_cache, const bool allow_shared_mesh, Mesh * * r_deform, Mesh * * r_final) Line 957
mesh_build_data(Depsgraph * depsgraph, Scene * scene, Object * ob, const CustomData_MeshMasks * dataMask, const bool need_mapping) Line 1836
makeDerivedMesh(Depsgraph * depsgraph, Scene * scene, Object * ob, BMEditMesh * em, const CustomData_MeshMasks * dataMask) Line 1950
BKE_object_handle_data_update(Depsgraph * depsgraph, Scene * scene, Object * ob) Line 189
BKE_object_eval_uber_data(Depsgraph * depsgraph, Scene * scene, Object * ob) Line 359

Looks like the modifier data isn't properly populated. ``` psys_emitter_customdata_mask(ParticleSystem * psys, CustomData_MeshMasks * r_cddata_masks) Line 1857 requiredDataMask(Object * UNUSED_ob, ModifierData * md, CustomData_MeshMasks * r_cddata_masks) Line 91 modifiers_calcDataMasks(Scene * scene, Object * ob, ModifierData * md, CustomData_MeshMasks * final_datamask, int required_mode, ModifierData * previewmd, const CustomData_MeshMasks * previewmask) Line 557 mesh_calc_modifiers(Depsgraph * depsgraph, Scene * scene, Object * ob, int useDeform, const bool need_mapping, const CustomData_MeshMasks * dataMask, const int index, const bool use_cache, const bool allow_shared_mesh, Mesh * * r_deform, Mesh * * r_final) Line 957 mesh_build_data(Depsgraph * depsgraph, Scene * scene, Object * ob, const CustomData_MeshMasks * dataMask, const bool need_mapping) Line 1836 makeDerivedMesh(Depsgraph * depsgraph, Scene * scene, Object * ob, BMEditMesh * em, const CustomData_MeshMasks * dataMask) Line 1950 BKE_object_handle_data_update(Depsgraph * depsgraph, Scene * scene, Object * ob) Line 189 BKE_object_eval_uber_data(Depsgraph * depsgraph, Scene * scene, Object * ob) Line 359 ```

Bastien Montagne self-assigned this 2020-01-15 16:33:33 +01:00

blender-admin commented

2020-01-21 19:59:39 +01:00

This issue was referenced by 56c7ee99b8

This issue was referenced by 56c7ee99b85833006bbda9c8f8ca4452278aae84

Bastien Montagne commented

2020-01-21 20:10:38 +01:00

Changed status from 'Confirmed' to: 'Resolved'

Bastien Montagne closed this issue

2020-01-21 20:10:38 +01:00

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Overrides with particle systems crash #72619