Crashes when the imported sim from houdini starts. #80967

New Issue

Onkar Domkawle · 2020-09-19T18:22:59+02:00

Onkar Domkawle commented

2020-09-19 18:22:59 +02:00

System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: GeForce 940MX/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 456.38

Blender Version
Broken: version: 2.90.0, branch: master, commit date: 2020-08-31 11:26, hash: 0330d1af29
Worked: (newest version of Blender that worked as expected)

Short description of error
I've imported a fluid sim from Houdini as an alembic file and it starts at frame 165. Every time the playhead or the timeline indicator reaches frame 145, blender crashes.
I've imported the alembic file into a fresh scene but still, the crash occurs.

Exact steps for others to reproduce the error
Open blender and import in the alembic file. (You can either use the provided blend file or start a fresh scene.)
V1.abc
MODELLING_THE_SCENE_V2_spidy_animated.blend
Either play the animation or scroll ahead of frame 165.
(sorry for the alembic file being soo big.)

Thank you so much!

**System Information** Operating system: Windows-10-10.0.18362-SP0 64 Bits Graphics card: GeForce 940MX/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 456.38 **Blender Version** Broken: version: 2.90.0, branch: master, commit date: 2020-08-31 11:26, hash: `0330d1af29` Worked: (newest version of Blender that worked as expected) **Short description of error** I've imported a fluid sim from Houdini as an alembic file and it starts at frame 165. Every time the playhead or the timeline indicator reaches frame 145, blender crashes. I've imported the alembic file into a fresh scene but still, the crash occurs. **Exact steps for others to reproduce the error** Open blender and import in the alembic file. (You can either use the provided blend file or start a fresh scene.) [V1.abc](https://archive.blender.org/developer/F8899674/V1.abc) [MODELLING_THE_SCENE_V2_spidy_animated.blend](https://archive.blender.org/developer/F8899935/MODELLING_THE_SCENE_V2_spidy_animated.blend) Either play the animation or scroll ahead of frame 165. (sorry for the alembic file being soo big.) Thank you so much!

Onkar Domkawle commented

2020-09-19 18:22:59 +02:00

Added subscriber: @theinfinites

Germano Cavalcante commented

2020-09-24 16:59:18 +02:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2020-09-24 16:59:18 +02:00

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

Germano Cavalcante commented

2020-09-24 16:59:18 +02:00

I can confirm the crash.
It occurred while I was viewing the animation.

>	blender.exe!blender::io::alembic::copy_zup_from_yup(float * zup, const float * yup) Line 40	C++

 	blender.exe!blender::io::alembic::process_loop_normals(blender::io::alembic::CDStreamConfig & config, const boost::shared_ptr<Alembic::Abc::v12::TypedArraySample<Alembic::Abc::v12::N3fTPTraits>> loop_normals_ptr) Line 283	C++
 	blender.exe!blender::io::alembic::process_normals(blender::io::alembic::CDStreamConfig & config, const Alembic::AbcGeom::v12::ITypedGeomParam<Alembic::Abc::v12::N3fTPTraits> & normals, const Alembic::Abc::v12::ISampleSelector & selector) Line 332	C++
 	blender.exe!blender::io::alembic::read_mesh_sample(const std::string & iobject_full_name, blender::io::alembic::ImportSettings * settings, const Alembic::AbcGeom::v12::IPolyMeshSchema & schema, const Alembic::Abc::v12::ISampleSelector & selector, blender::io::alembic::CDStreamConfig & config) Line 443	C++
 	blender.exe!blender::io::alembic::AbcMeshReader::read_mesh(Mesh * existing_mesh, const Alembic::Abc::v12::ISampleSelector & sample_sel, int read_flag, const char * * err_str) Line 646	C++
 	blender.exe!ABC_read_mesh(CacheReader * reader, Object * ob, Mesh * existing_mesh, const float time, const char * * err_str, int read_flag) Line 798	C++
 	blender.exe!modifyMesh(ModifierData * md, const ModifierEvalContext * ctx, Mesh * mesh) Line 167	C
 	blender.exe!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 1183	C
 	blender.exe!mesh_build_data(Depsgraph * depsgraph, Scene * scene, Object * ob, const CustomData_MeshMasks * dataMask, const bool need_mapping) Line 1801	C
 	blender.exe!makeDerivedMesh(Depsgraph * depsgraph, Scene * scene, Object * ob, BMEditMesh * em, const CustomData_MeshMasks * dataMask) Line 1922	C
 	blender.exe!BKE_object_handle_data_update(Depsgraph * depsgraph, Scene * scene, Object * ob) Line 194	C
 	blender.exe!BKE_object_eval_uber_data(Depsgraph * depsgraph, Scene * scene, Object * ob) Line 385	C
 	[External Code]	
 	blender.exe!blender::deg::`anonymous namespace'::deg_task_run_func(TaskPool * pool, void * taskdata) Line 128	C++
 	[External Code]	
 	blender.exe!tbb::interface7::internal::isolate_impl<void,void <lambda>(void) const>(const Task::()::__l2::void <lambda>(void) & f) Line 160	C++
 	blender.exe!Task::operator()() Line 122	C++
 	blender.exe!tbb::internal::function_task<Task>::execute() Line 1049	C++
 	[External Code]	
 	blender.exe!tbb::internal::task_group_base::wait() Line 168	C++
 	blender.exe!blender::deg::deg_evaluate_on_refresh(blender::deg::Depsgraph * graph) Line 399	C++
 	blender.exe!BKE_scene_graph_update_for_newframe(Depsgraph * depsgraph) Line 1603	C
 	blender.exe!screen_animation_step(bContext * C, wmOperator * UNUSED_op, const wmEvent * event) Line 4590	C
 	blender.exe!wm_operator_invoke(bContext * C, wmOperatorType * ot, wmEvent * event, PointerRNA * properties, ReportList * reports, const bool poll_only, bool use_last_properties) Line 1304	C
 	blender.exe!wm_handler_operator_call(bContext * C, ListBase * handlers, wmEventHandler * handler_base, wmEvent * event, PointerRNA * properties, const unsigned char * kmi_idname) Line 2132	C
 	blender.exe!wm_handlers_do_keymap_with_keymap_handler(bContext * C, wmEvent * event, ListBase * handlers, wmEventHandler_Keymap * handler, wmKeyMap * keymap, const bool do_debug_handler) Line 2442	C
 	blender.exe!wm_handlers_do_intern(bContext * C, wmEvent * event, ListBase * handlers) Line 2739	C
 	blender.exe!wm_handlers_do(bContext * C, wmEvent * event, ListBase * handlers) Line 2869	C
 	blender.exe!wm_event_do_handlers(bContext * C) Line 3402	C
 	blender.exe!WM_main(bContext * C) Line 485	C
 	blender.exe!main(int argc, const unsigned char * * UNUSED_argv_c) Line 535	C
 	[External Code]

I can confirm the crash. It occurred while I was viewing the animation. ```lines > blender.exe!blender::io::alembic::copy_zup_from_yup(float * zup, const float * yup) Line 40 C++ blender.exe!blender::io::alembic::process_loop_normals(blender::io::alembic::CDStreamConfig & config, const boost::shared_ptr<Alembic::Abc::v12::TypedArraySample<Alembic::Abc::v12::N3fTPTraits>> loop_normals_ptr) Line 283 C++ blender.exe!blender::io::alembic::process_normals(blender::io::alembic::CDStreamConfig & config, const Alembic::AbcGeom::v12::ITypedGeomParam<Alembic::Abc::v12::N3fTPTraits> & normals, const Alembic::Abc::v12::ISampleSelector & selector) Line 332 C++ blender.exe!blender::io::alembic::read_mesh_sample(const std::string & iobject_full_name, blender::io::alembic::ImportSettings * settings, const Alembic::AbcGeom::v12::IPolyMeshSchema & schema, const Alembic::Abc::v12::ISampleSelector & selector, blender::io::alembic::CDStreamConfig & config) Line 443 C++ blender.exe!blender::io::alembic::AbcMeshReader::read_mesh(Mesh * existing_mesh, const Alembic::Abc::v12::ISampleSelector & sample_sel, int read_flag, const char * * err_str) Line 646 C++ blender.exe!ABC_read_mesh(CacheReader * reader, Object * ob, Mesh * existing_mesh, const float time, const char * * err_str, int read_flag) Line 798 C++ blender.exe!modifyMesh(ModifierData * md, const ModifierEvalContext * ctx, Mesh * mesh) Line 167 C blender.exe!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 1183 C blender.exe!mesh_build_data(Depsgraph * depsgraph, Scene * scene, Object * ob, const CustomData_MeshMasks * dataMask, const bool need_mapping) Line 1801 C blender.exe!makeDerivedMesh(Depsgraph * depsgraph, Scene * scene, Object * ob, BMEditMesh * em, const CustomData_MeshMasks * dataMask) Line 1922 C blender.exe!BKE_object_handle_data_update(Depsgraph * depsgraph, Scene * scene, Object * ob) Line 194 C blender.exe!BKE_object_eval_uber_data(Depsgraph * depsgraph, Scene * scene, Object * ob) Line 385 C [External Code] blender.exe!blender::deg::`anonymous namespace'::deg_task_run_func(TaskPool * pool, void * taskdata) Line 128 C++ [External Code] blender.exe!tbb::interface7::internal::isolate_impl<void,void <lambda>(void) const>(const Task::()::__l2::void <lambda>(void) & f) Line 160 C++ blender.exe!Task::operator()() Line 122 C++ blender.exe!tbb::internal::function_task<Task>::execute() Line 1049 C++ [External Code] blender.exe!tbb::internal::task_group_base::wait() Line 168 C++ blender.exe!blender::deg::deg_evaluate_on_refresh(blender::deg::Depsgraph * graph) Line 399 C++ blender.exe!BKE_scene_graph_update_for_newframe(Depsgraph * depsgraph) Line 1603 C blender.exe!screen_animation_step(bContext * C, wmOperator * UNUSED_op, const wmEvent * event) Line 4590 C blender.exe!wm_operator_invoke(bContext * C, wmOperatorType * ot, wmEvent * event, PointerRNA * properties, ReportList * reports, const bool poll_only, bool use_last_properties) Line 1304 C blender.exe!wm_handler_operator_call(bContext * C, ListBase * handlers, wmEventHandler * handler_base, wmEvent * event, PointerRNA * properties, const unsigned char * kmi_idname) Line 2132 C blender.exe!wm_handlers_do_keymap_with_keymap_handler(bContext * C, wmEvent * event, ListBase * handlers, wmEventHandler_Keymap * handler, wmKeyMap * keymap, const bool do_debug_handler) Line 2442 C blender.exe!wm_handlers_do_intern(bContext * C, wmEvent * event, ListBase * handlers) Line 2739 C blender.exe!wm_handlers_do(bContext * C, wmEvent * event, ListBase * handlers) Line 2869 C blender.exe!wm_event_do_handlers(bContext * C) Line 3402 C blender.exe!WM_main(bContext * C) Line 485 C blender.exe!main(int argc, const unsigned char * * UNUSED_argv_c) Line 535 C [External Code] ```

Sybren A. Stüvel self-assigned this 2020-09-28 12:44:57 +02:00

Sybren A. Stüvel commented

2020-09-28 14:06:30 +02:00

The Alembic file has invalid data. At the start, the mesh has 66858 loops and the same number of loop normals. However, when the fluid simulation begins, the mesh has many more loops (the topology is changing per frame, which is quite normal for a simulation result) but the number of loop normals remains at 66858.

I can't fix the Houdini exporter, but I can make Blender not crash on this file.

The Alembic file has invalid data. At the start, the mesh has 66858 loops and the same number of loop normals. However, when the fluid simulation begins, the mesh has many more loops (the topology is changing per frame, which is quite normal for a simulation result) but the number of loop normals remains at 66858. I can't fix the Houdini exporter, but I can make Blender not crash on this file.

blender-admin commented

2020-09-28 14:12:33 +02:00

This issue was referenced by 3158fc2593

This issue was referenced by 3158fc2593e1afc29280187d9e427a6c21a8f37f

Sybren A. Stüvel commented

2020-09-28 14:13:56 +02:00

Changed status from 'Confirmed' to: 'Resolved'

Sybren A. Stüvel closed this issue

2020-09-28 14:13:56 +02:00

Onkar Domkawle commented

2020-09-28 14:20:23 +02:00

Thank you so much for this.
I also found a fix but that requires C4D. I imported the Alembic file in C4D and then exported it again as an Alembic. Imported that in Blender and it works.

Thank you so much for this. I also found a fix but that requires C4D. I imported the Alembic file in C4D and then exported it again as an Alembic. Imported that in Blender and it works.

Sybren A. Stüvel commented

2020-09-28 17:32:49 +02:00

That probably means that C4D either doesn't write normals at all, or writes them correctly. In any case, I prefer Blender to not crash anyway ;-)

Onkar Domkawle commented

2020-09-28 19:43:30 +02:00

Yup, that's the dream : )

Sybren A. Stüvel commented

2020-09-29 17:55:53 +02:00

Try the daily build, it shouldn't crash any more. https://builder.blender.org/download/

Onkar Domkawle commented

2020-10-01 21:46:31 +02:00

yes sir!

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Crashes when the imported sim from houdini starts. #80967