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moving keys on a rig, Crash
Closed, ResolvedPublic

Description

System Information

Blender Version
Broken: blender-2.80.0-git.1a865b4ff01-windows64
Worked: none 2.8

Short description of error
Moving keyframes makes some rigs very unstable, with flickering and often resulting in a crash. Renders and baking of frames give out of sync results with unusual stretching of bones.

Exact steps for others to reproduce the error
simply move a key frame, only crashes when several bones are keyed.

Event Timeline

@Philipp Oeser (lichtwerk), can not reproduce the crash, but maybe i'm doing something wrong. What are the exact steps to crash this file? Also, mind testing with -t 1 command line argument?

@Sergey Sharybin (sergey): -t 1 seems to solve the issue

What I did:

  • open file
  • deselect all bones
  • select a couple of bones in the spine
  • Timeline > Dope Sheet Summary > select right key
  • grab, move left and right --> flickering (might take some wiggeling, but should eventually show up...)

edit: got a crash, too

1  fcurve_eval_keyframes                                                                                                                                                 fcurve.c       2323 0x2733b2e      
2  evaluate_fcurve_ex                                                                                                                                                    fcurve.c       2777 0x2734c90      
3  evaluate_fcurve                                                                                                                                                       fcurve.c       2800 0x2734dae      
4  calculate_fcurve                                                                                                                                                      fcurve.c       2863 0x2734f9a      
5  animsys_evaluate_fcurves                                                                                                                                              anim_sys.c     1726 0x2684d71      
6  animsys_evaluate_action_ex                                                                                                                                            anim_sys.c     1851 0x2685133      
7  BKE_animsys_evaluate_animdata                                                                                                                                         anim_sys.c     2751 0x2686b9e      
8  BKE_animsys_eval_animdata                                                                                                                                             anim_sys.c     2934 0x2687b19      
9  std::__invoke_impl<void, void ( *&)(Depsgraph *, ID *), Depsgraph *, ID *&>                                                                                           invoke.h       60   0x2be6ad7      
10 std::__invoke<void ( *&)(Depsgraph *, ID *), Depsgraph *, ID *&>                                                                                                      invoke.h       95   0x2be5895      
11 std::_Bind<void ( *(std::_Placeholder<1>, ID *))(Depsgraph *, ID *)>::__call<void, Depsgraph *&&, 0ul, 1ul>(std::tuple<Depsgraph *&&>&&, std::_Index_tuple<0ul, 1ul>) functional     400  0x2be4465      
12 std::_Bind<void ( *(std::_Placeholder<1>, ID *))(Depsgraph *, ID *)>::operator()<Depsgraph *, void>(Depsgraph *&&)                                                    functional     484  0x2be2849      
13 std::_Function_handler<void (Depsgraph *), std::_Bind<void ( *(std::_Placeholder<1>, ID *))(Depsgraph *, ID *)>>::_M_invoke(std::_Any_data const&, Depsgraph *&&)     std_function.h 297  0x2bdff25      
14 std::function<void (Depsgraph *)>::operator()(Depsgraph *) const                                                                                                      std_function.h 687  0x2bf6b5d      
15 DEG::deg_task_run_func                                                                                                                                                deg_eval.cc    94   0x2bf62f0      
16 handle_local_queue                                                                                                                                                    task.c         419  0x2bba3c5      
17 task_scheduler_thread_run                                                                                                                                             task.c         448  0x2bba3c5      
18 start_thread                                                                                                                                                                              0x7ffff633c58e 
19 clone                                                                                                                                                                                     0x7ffff6265513

something with the FCurve bezt pointer magic in fcurve_eval_keyframes()?