Crash when switching to other scene IF there are 2 view layers (2.91 Alpha regression, compared to the latest 2.90 Beta) #80033

New Issue

Yassir A. P. · 2020-08-23T09:44:37+02:00

Yassir A. P. commented

2020-08-23 09:44:37 +02:00

System Information
Operating system: Windows-10-10.0.16299-SP0 64 Bits
Graphics card: GeForce GT 720M/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 391.35

Blender Version
Broken: version: 2.91.0 Alpha, branch: master, commit date: 2020-08-22 22:24, hash: 010c1370af
Worked: version: 2.90.0 Beta, commit date: 2020-08-21 15:35, hash: ebf10b72b0

Short description of error
Please bear with me explaining this as I already did many possible steps/conditions that can reproduce the crash.

Blender crashes IF:

There are 1 or 2 scenes, and 2 view layers in any one scene, switching to other scene (either from scene drop down list or clicking other scene from Outliner) OR choosing any button from the add New Scene options (from top bar) (screenshot)
BUT it doesn't crash if I switch to another view layer first, then switch to another scene.
There are 2 scenes, and only 1 view layer in each scene, it crashes if I choose any option of the add New Scene button (screenshot) OR copying current Scene then pasting it, then switch to other scene.
BUT it doesn't crash if I : A) switch to another scene; B) delete current scene; C) switch to another scene first BEFORE adding New Scene (copy paste or topbar button)
There are 3 or more scenes, and 1 view layer each, it crashes either by switching to another scene OR adding new Scene (from top bar) OR copy-pasting a Scene (from Outliner) then switching to another Scene.

Exact steps for others to reproduce the error
I created 3 simple .blend files for each case:
1---2scenes-2viewlayers-on1stscene.blend

There is 1 or 2 scenes, and 2 view layers in any one scene: A) Switch to another scene > crash; B) Delete current Scene (from topbar) > crash; C) Add New Scene (topbar) > choose any option from the pop-up > crash.
2---2scenes-1viewlayer-each.blend
There are 2 scenes, 1 view layer each: A) Add New Scene (from top bar)> choose any option from the pop up > crash; B) Copy-Paste current Scene > switch to another Scene > crash;
3---3scenes-1viewlayer-each.blend
There are 3 scenes: A) Switch to another scene > crash; B) Add New Scene (from top bar)> choose any option from the pop up > crash; C) Delete current Scene (from topbar) > crash; D) Copy-Paste current Scene > switch to another Scene > crash.

I don't know if this is only in Windows or only with specific machine/drivers, so I also attach my system info, generated with all addons disabled because I can reproduce them without any addon enabled. system-info.txt
Thanks in advance for all people's hard work!

**System Information** Operating system: Windows-10-10.0.16299-SP0 64 Bits Graphics card: GeForce GT 720M/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 391.35 **Blender Version** Broken: version: 2.91.0 Alpha, branch: master, commit date: 2020-08-22 22:24, hash: `010c1370af` Worked: version: 2.90.0 Beta, commit date: 2020-08-21 15:35, hash: `ebf10b72b0` **Short description of error** Please bear with me explaining this as I already did many possible steps/conditions that can reproduce the crash. Blender crashes IF: 1. There are 1 or 2 scenes, and 2 view layers in any one scene, switching to other scene (either from scene drop down list or clicking other scene from Outliner) OR choosing any button from the add New Scene options (from top bar) (screenshot) ![2020-08-23-[12-34-32]-126.png](https://archive.blender.org/developer/F8805510/2020-08-23-_12-34-32_-126.png) BUT it doesn't crash if I switch to another view layer first, then switch to another scene. 2. There are 2 scenes, and only 1 view layer in each scene, it crashes if I choose any option of the add New Scene button (screenshot) OR copying **current** Scene then pasting it, then switch to other scene. BUT it doesn't crash if I : A) switch to another scene; B) delete current scene; C) switch to another scene first BEFORE adding New Scene (copy paste or topbar button) 3. There are 3 or more scenes, and 1 view layer each, it crashes either by switching to another scene OR adding new Scene (from top bar) OR copy-pasting a Scene (from Outliner) then switching to another Scene. **Exact steps for others to reproduce the error** I created 3 simple .blend files for each case: [1---2scenes-2viewlayers-on1stscene.blend](https://archive.blender.org/developer/F8805606/1---2scenes-2viewlayers-on1stscene.blend) 1. There is 1 or 2 scenes, and 2 view layers in any one scene: A) Switch to another scene > crash; B) Delete current Scene (from topbar) > crash; C) Add New Scene (topbar) > choose any option from the pop-up > crash. [2---2scenes-1viewlayer-each.blend](https://archive.blender.org/developer/F8805607/2---2scenes-1viewlayer-each.blend) 2. There are 2 scenes, 1 view layer each: A) Add New Scene (from top bar)> choose any option from the pop up > crash; B) Copy-Paste **current** Scene > switch to another Scene > crash; [3---3scenes-1viewlayer-each.blend](https://archive.blender.org/developer/F8805609/3---3scenes-1viewlayer-each.blend) 3. There are 3 scenes: A) Switch to another scene > crash; B) Add New Scene (from top bar)> choose any option from the pop up > crash; C) Delete current Scene (from topbar) > crash; D) Copy-Paste **current** Scene > switch to another Scene > crash. I don't know if this is only in Windows or only with specific machine/drivers, so I also attach my system info, generated with all addons disabled because I can reproduce them without any addon enabled. [system-info.txt](https://archive.blender.org/developer/F8805623/system-info.txt) Thanks in advance for all people's hard work!

Yassir A. P. commented

2020-08-23 09:44:37 +02:00

Added subscriber: @Yassir

Richard Antalik commented

2020-08-25 04:48:21 +02:00

Added subscriber: @iss

Richard Antalik commented

2020-08-25 04:48:21 +02:00

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

Richard Antalik commented

2020-08-25 04:48:21 +02:00

All cases are pretty much same:

Exception thrown: read access violation. this->time_source was nullptr.

>	blender.exe!blender::deg::Depsgraph::tag_time_source() Line 107	C++

 	blender.exe!DEG_graph_time_tag_update(Depsgraph * depsgraph) Line 776	C++
 	blender.exe!DEG_time_tag_update(Main * bmain) Line 769	C++
 	blender.exe!ED_update_for_newframe(Main * bmain, Depsgraph * depsgraph) Line 1582	C
 	blender.exe!ED_scene_change_update(Main * bmain, Scene * scene, ViewLayer * layer) Line 127	C
 	blender.exe!WM_window_set_active_scene(Main * bmain, bContext * C, wmWindow * win, Scene * scene) Line 2345	C
 	blender.exe!rna_Window_scene_update(bContext * C, PointerRNA * ptr) Line 739	C
 	blender.exe!rna_property_update(bContext * C, Main * bmain, Scene * scene, PointerRNA * ptr, PropertyRNA * prop) Line 2277	C
 	blender.exe!RNA_property_update(bContext * C, PointerRNA * ptr, PropertyRNA * prop) Line 2346	C
 	blender.exe!template_ID_set_property_exec_fn(bContext * C, void * arg_template, void * item) Line 330	C
 	blender.exe!ui_apply_but_funcs_after(bContext * C) Line 923	C
 	blender.exe!ui_handler_region_menu(bContext * C, const wmEvent * event, void * UNUSED_userdata) Line 10843	C
 	blender.exe!wm_handler_ui_call(bContext * C, wmEventHandler_UI * handler, const wmEvent * event, int always_pass) Line 634	C
 	blender.exe!wm_handlers_do_intern(bContext * C, wmEvent * event, ListBase * handlers) Line 2750	C
 	blender.exe!wm_handlers_do(bContext * C, wmEvent * event, ListBase * handlers) Line 2861	C
 	blender.exe!wm_event_do_handlers(bContext * C) Line 3286	C
 	blender.exe!WM_main(bContext * C) Line 479	C
 	blender.exe!main(int argc, const unsigned char * * UNUSED_argv_c) Line 548	C
 	[External Code]

All cases are pretty much same: `Exception thrown: read access violation. this->time_source was nullptr.` ``` > blender.exe!blender::deg::Depsgraph::tag_time_source() Line 107 C++ blender.exe!DEG_graph_time_tag_update(Depsgraph * depsgraph) Line 776 C++ blender.exe!DEG_time_tag_update(Main * bmain) Line 769 C++ blender.exe!ED_update_for_newframe(Main * bmain, Depsgraph * depsgraph) Line 1582 C blender.exe!ED_scene_change_update(Main * bmain, Scene * scene, ViewLayer * layer) Line 127 C blender.exe!WM_window_set_active_scene(Main * bmain, bContext * C, wmWindow * win, Scene * scene) Line 2345 C blender.exe!rna_Window_scene_update(bContext * C, PointerRNA * ptr) Line 739 C blender.exe!rna_property_update(bContext * C, Main * bmain, Scene * scene, PointerRNA * ptr, PropertyRNA * prop) Line 2277 C blender.exe!RNA_property_update(bContext * C, PointerRNA * ptr, PropertyRNA * prop) Line 2346 C blender.exe!template_ID_set_property_exec_fn(bContext * C, void * arg_template, void * item) Line 330 C blender.exe!ui_apply_but_funcs_after(bContext * C) Line 923 C blender.exe!ui_handler_region_menu(bContext * C, const wmEvent * event, void * UNUSED_userdata) Line 10843 C blender.exe!wm_handler_ui_call(bContext * C, wmEventHandler_UI * handler, const wmEvent * event, int always_pass) Line 634 C blender.exe!wm_handlers_do_intern(bContext * C, wmEvent * event, ListBase * handlers) Line 2750 C blender.exe!wm_handlers_do(bContext * C, wmEvent * event, ListBase * handlers) Line 2861 C blender.exe!wm_event_do_handlers(bContext * C) Line 3286 C blender.exe!WM_main(bContext * C) Line 479 C blender.exe!main(int argc, const unsigned char * * UNUSED_argv_c) Line 548 C [External Code] ```

Jacques Lucke commented

2020-09-01 15:16:06 +02:00

Added subscriber: @JacquesLucke