Bug Index out of range in RigSyncSceneToStream crashes Unity

hi everyone,

I have a project which would love to use anim rigging but we keep running into problems.

btw Unity 2022.2.13f1, Anim Rigging 1.2.1

A lot of our logic runs on timelines evaluated in fixed update, we even evaluate the animator graphs from here. Which is a bit odd idk but keep reading:

To make that setup compatible with animation rigging we use RigBuilder.Build(Animator.playableGraph) to build the graph into the Animators. However apparently there is something terribly wrong here. Because when I disable and reenable a gameobject using the animation rigging package setup this way I get spammed with errors and then the engine crashes entirely.

I was able to isolate the issue to this callstack

Code (CSharp):

1. IndexOutOfRangeException: Index 1 is out of range of '1' Length.
2. Unity.Collections.NativeArray`1[T].FailOutOfRangeError (System.Int32 index) (at <1d5ae28f5ca3488dbddca7794af65eb1>:0)
3. Unity.Collections.NativeArray`1[T].CheckElementReadAccess (System.Int32 index) (at <1d5ae28f5ca3488dbddca7794af65eb1>:0)
4. Unity.Collections.NativeArray`1[T].get_Item (System.Int32 index) (at <1d5ae28f5ca3488dbddca7794af65eb1>:0)
5. UnityEngine.Animations.Rigging.RigSyncSceneToStreamJob.ProcessAnimation (UnityEngine.Animations.AnimationStream stream) (at ./Library/PackageCache/com.unity.animation.rigging@1.2.1/Runtime/AnimationJobs/RigSyncSceneToStreamJob.cs:131)
6. UnityEngine.Animations.ProcessAnimationJobStruct`1[T].Execute (T& data, System.IntPtr animationStreamPtr, System.IntPtr methodIndex, Unity.Jobs.LowLevel.Unsafe.JobRanges& ranges, System.Int32 jobIndex) (at <db3566faca374d64972d756cf7552385>:0)
7. UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr, Boolean&)

this is the function / line mentioned

"currConstraintWeights *= (currRigWeights[rigIndex] * rigStates[rigIndex]);"

Code (CSharp):

1.         public void ProcessAnimation(AnimationStream stream)
2.         {
3.             transformSyncer.Sync(ref stream);
4.             propertySyncer.Sync(ref stream);
5.             rigWeightSyncer.Sync(ref stream);
6.             constraintWeightSyncer.Sync(ref stream);
7.  
8.             var currRigWeights = rigWeightSyncer.StreamValues(ref stream);
9.             var currConstraintWeights = constraintWeightSyncer.StreamValues(ref stream);
10.  
11.             int rigIndex = 0;
12.             for (int i = 0, count = currConstraintWeights.Length; i < count; ++i)
13.             {
14.                 if (i >= rigConstraintEndIdx[rigIndex])
15.                     rigIndex++;
16.  
17.                 currConstraintWeights[i] *= (currRigWeights[rigIndex] * rigStates[rigIndex]);
18.             }
19.  
20.             AnimationStreamHandleUtility.WriteFloats(stream, modulatedConstraintWeights, currConstraintWeights, false);
21.         }

I see the problem, but I have no idea how to fix it / work around it. I'd be thankful for any kind of advice or idea.

The culprit is very very likely Rigbuilder.Build() because depending on when I call this I can break unity at any given moment.



Sometimes I can pause unity before it crashes, also found this

Code (csharp):

1.  
2. System.InvalidOperationException: The TransformStreamHandle cannot be resolved.
3. This Exception was thrown from a job compiled with Burst, which has limited exception support.
4. 0x00007ffcdd581aaa (b547796dbfbe88451a79b3557ab8309) UnityEngine.Animations.Rigging.AnimationRuntimeUtils.PassThrough (at C:/Projects/Fizbin/pk_main/project kokidon/Library/PackageCache/com.unity.burst@1.8.4/.Runtime/Library/PackageCache/com.unity.animation.rigging@1.2.1/Runtime/Utils/AnimationRuntimeUtils.cs:395)
5. 0x00007ffcdd589cfd (b547796dbfbe88451a79b3557ab8309) UnityEngine.Animations.ProcessAnimationJobStruct`1<UnityEngine.Animations.Rigging.ChainIKConstraintJob>.Execute(ref UnityEngine.Animations.Rigging.ChainIKConstraintJob data, System.IntPtr animationStreamPtr, System.IntPtr methodIndex, ref Unity.Jobs.LowLevel.Unsafe.JobRanges ranges, int jobIndex) -> void_73c04fea4d034adcf3d7ccb459d2c985 from UnityEngine.AnimationModule, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null (at C:/Projects/Fizbin/pk_main/project kokidon/Library/PackageCache/com.unity.burst@1.8.4/.Runtime/unknown/unknown:0)
6. 0x00007ffcdd589a76 (b547796dbfbe88451a79b3557ab8309) f8836ca6e4d6f549d52557a9dcf72086
7. 0x00007ff7a00a9227 (Unity) ExecuteJobWithSharedJobData
8. 0x00007ff7a08c5923 (Unity) AnimationScriptPlayable::ProcessAnimation
9. 0x00007ff7a08c57b9 (Unity) AnimationPlayable::ProcessAnimation
10. 0x00007ff7a08c583b (Unity) AnimationScriptPlayable::ProcessAnimation
11. 0x00007ff7a08533b9 (Unity) `anonymous namespace'::ProcessPlayableGraph
12. 0x00007ff7a0852fbb (Unity) Animator::ProcessAnimationsStep
13. 0x00007ff7a086ef18 (Unity) UnityEngine::Animation::BlockRangeJob<Animator::AnimatorJob>::Job
14. 0x00007ff7a00a5eff (Unity) ujob_execute_job
15. 0x00007ff7a00a72cf (Unity) ujob_wait_for
16. 0x00007ff7a00a1ca7 (Unity) CompleteFenceInternal
17. 0x00007ff7a087883a (Unity) Animator::UpdateAvatars
18. 0x00007ff7a03f8ea4 (Unity) PlayableGraph::Evaluate
19. 0x00007ff79f631b0c (Unity) PlayableGraph_CUSTOM_Evaluate_Injected
20. 0x000001bd19956e8f (Mono JIT Code) (wrapper managed-to-native) UnityEngine.Playables.PlayableGraph:Evaluate_Injected (UnityEngine.Playables.PlayableGraph&,single)
21. 0x000001bd19956db3 (Mono JIT Code) UnityEngine.Playables.PlayableGraph:Evaluate (single)
22. 0x000001bd1995275b (Mono JIT Code) PK.Gameplay.Character.Common.Clips.AnimatorMixerBehaviour:PlayClip (UnityEngine.Playables.Playable,UnityEngine.Playables.FrameData) (at C:/Projects/Fizbin/pk_main/project kokidon/Assets/Source/Gameplay/Character/Common/Clips/AnimatorTrack/AnimatorMixerBehaviour.cs:164)
23. 0x000001bd1994f579 (Mono JIT Code) PK.Gameplay.Character.Common.Clips.BaseBehaviour:ProcessFrame (UnityEngine.Playables.Playable,UnityEngine.Playables.FrameData,object) (at C:/Projects/Fizbin/pk_main/project kokidon/Assets/Source/Gameplay/Character/Common/Clips/BaseBehaviour.cs:89)
24. 0x000001bd1994f82b (Mono JIT Code) (wrapper runtime-invoke) <Module>:runtime_invoke_void__this___Playable_FrameData_object (object,intptr,intptr,intptr)
25. 0x00007ffcce140394 (mono-2.0-bdwgc) mono_jit_runtime_invoke (at C:/build/output/Unity-Technologies/mono/mono/mini/mini-runtime.c:3445)
26. 0x00007ffcce07eb44 (mono-2.0-bdwgc) do_runtime_invoke (at C:/build/output/Unity-Technologies/mono/mono/metadata/object.c:3066)
27. 0x00007ffcce07ecdc (mono-2.0-bdwgc) mono_runtime_invoke (at C:/build/output/Unity-Technologies/mono/mono/metadata/object.c:3113)
28. 0x00007ff7a047d7b4 (Unity) scripting_method_invoke
29. 0x00007ff7a045e0e4 (Unity) ScriptingInvocation::Invoke
30. 0x00007ff7a03ff01b (Unity) PlayableMethods::InvokeProcessFrame
31. 0x00007ff7a03f38e0 (Unity) Playable::Process
32. 0x00007ff79fffbe1c (Unity) Playable::ProcessVisitor
33. 0x00007ff79fffc288 (Unity) PostOrderPlayableTraverser::Traverse
34. 0x00007ff79fffbedb (Unity) PostOrderPlayableTraverser::RecursiveVisit
35. 0x00007ff79fffc19c (Unity) PostOrderPlayableTraverser::Traverse
36. 0x00007ff7a03fcfa3 (Unity) ScriptPlayableOutput::ScriptProcessFrame
37. 0x00007ff7a03f8ea4 (Unity) PlayableGraph::Evaluate
38. 0x00007ff79f631b0c (Unity) PlayableGraph_CUSTOM_Evaluate_Injected
39. 0x000001bd19956e8f (Mono JIT Code) (wrapper managed-to-native) UnityEngine.Playables.PlayableGraph:Evaluate_Injected (UnityEngine.Playables.PlayableGraph&,single)
40. 0x000001bd19956db3 (Mono JIT Code) UnityEngine.Playables.PlayableGraph:Evaluate (single)
41. 0x000001bd9f8aca1b (Mono JIT Code) PK.Gameplay.Character.Common.Clips.PlayableDirectorController:FixedUpdate () (at C:/Projects/Fizbin/pk_main/project kokidon/Assets/Source/Gameplay/Character/Common/Clips/PlayableDirectorController.cs:132)
42. 0x000001bda0c07a88 (Mono JIT Code) (wrapper runtime-invoke) object:runtime_invoke_void__this__ (object,intptr,intptr,intptr)
43. 0x00007ffcce140394 (mono-2.0-bdwgc) mono_jit_runtime_invoke (at C:/build/output/Unity-Technologies/mono/mono/mini/mini-runtime.c:3445)
44. 0x00007ffcce07eb44 (mono-2.0-bdwgc) do_runtime_invoke (at C:/build/output/Unity-Technologies/mono/mono/metadata/object.c:3066)
45. 0x00007ffcce07ecdc (mono-2.0-bdwgc) mono_runtime_invoke (at C:/build/output/Unity-Technologies/mono/mono/metadata/object.c:3113)
46. 0x00007ff7a047d7b4 (Unity) scripting_method_invoke
47. 0x00007ff7a045e0e4 (Unity) ScriptingInvocation::Invoke
48. 0x00007ff7a0445a54 (Unity) MonoBehaviour::CallMethodIfAvailable
49. 0x00007ff7a0445b7a (Unity) MonoBehaviour::CallUpdateMethod
50. 0x00007ff79fee6b2b (Unity) BaseBehaviourManager::CommonUpdate<FixedBehaviourManager>
51. 0x00007ff79feee39a (Unity) FixedBehaviourManager::Update
52. 0x00007ff7a0114116 (Unity) `InitPlayerLoopCallbacks'::`2'::FixedUpdateScriptRunBehaviourFixedUpdateRegistrator::Forward
53. 0x00007ff7a00fb65a (Unity) ExecutePlayerLoop
54. 0x00007ff7a00fb7e3 (Unity) ExecutePlayerLoop
55. 0x00007ff7a0101b45 (Unity) PlayerLoop
56. 0x00007ff7a10937af (Unity) PlayerLoopController::InternalUpdateScene
57. 0x00007ff7a10a04ed (Unity) PlayerLoopController::UpdateSceneIfNeededFromMainLoop
58. 0x00007ff7a109e7f1 (Unity) Application::TickTimer
59. 0x00007ff7a152a68a (Unity) MainMessageLoop
60. 0x00007ff7a152f430 (Unity) WinMain
61. 0x00007ff7a291272e (Unity) __scrt_common_main_seh
62. 0x00007ffd8f5b269d (KERNEL32) BaseThreadInitThunk
63. 0x00007ffd90a4a9f8 (ntdll) RtlUserThreadStart
64. [/I]
65.  

burst disabled

Code (csharp):

1.  
2. InvalidOperationException: The TransformStreamHandle cannot be resolved.
3. UnityEngine.Animations.TransformStreamHandle.CheckIsValidAndResolve (UnityEngine.Animations.AnimationStream& stream) (at <db3566faca374d64972d756cf7552385>:0)
4. UnityEngine.Animations.TransformStreamHandle.GetLocalTRS (UnityEngine.Animations.AnimationStream stream, UnityEngine.Vector3& position, UnityEngine.Quaternion& rotation, UnityEngine.Vector3& scale) (at <db3566faca374d64972d756cf7552385>:0)
5. UnityEngine.Animations.Rigging.ReadWriteTransformHandle.GetLocalTRS (UnityEngine.Animations.AnimationStream stream, UnityEngine.Vector3& position, UnityEngine.Quaternion& rotation, UnityEngine.Vector3& scale) (at ./Library/PackageCache/com.unity.animation.rigging@1.2.1/Runtime/AnimationJobs/TransformHandle.cs:38)
6. UnityEngine.Animations.Rigging.AnimationRuntimeUtils.PassThrough (UnityEngine.Animations.AnimationStream stream, UnityEngine.Animations.Rigging.ReadWriteTransformHandle handle) (at ./Library/PackageCache/com.unity.animation.rigging@1.2.1/Runtime/Utils/AnimationRuntimeUtils.cs:393)
7. UnityEngine.Animations.Rigging.ChainIKConstraintJob.ProcessAnimation (UnityEngine.Animations.AnimationStream stream) (at ./Library/PackageCache/com.unity.animation.rigging@1.2.1/Runtime/AnimationJobs/ChainIKConstraintJob.cs:93)
8. UnityEngine.Animations.ProcessAnimationJobStruct`1[T].Execute (T& data, System.IntPtr animationStreamPtr, System.IntPtr methodIndex, Unity.Jobs.LowLevel.Unsafe.JobRanges& ranges, System.Int32 jobIndex) (at <db3566faca374d64972d756cf7552385>:0)
9. UnityEngine.Playables.PlayableGraph:Evaluate(Single)
10. PK.Gameplay.Character.Common.Clips.AnimatorMixerBehaviour:PlayClip(Playable, FrameData) (at Assets/Source/Gameplay/Character/Common/Clips/AnimatorTrack/AnimatorMixerBehaviour.cs:163)
11. PK.Gameplay.Character.Common.Clips.BaseBehaviour:ProcessFrame(Playable, FrameData, Object) (at Assets/Source/Gameplay/Character/Common/Clips/BaseBehaviour.cs:86)
12. UnityEngine.Playables.PlayableGraph:Evaluate(Single)
13. PK.Gameplay.Character.Common.Clips.PlayableDirectorController:FixedUpdate() (at Assets/Source/Gameplay/Character/Common/Clips/PlayableDirectorController.cs:130)
14. [/I]
15.  

on domain reload:

Code (csharp):

1.  
2. NullReferenceException: Object reference not set to an instance of an object
3. UnityEngine.Animations.Rigging.RigUtils.ExtractAllSyncableData (UnityEngine.Animator animator, System.Collections.Generic.IList`1[T] layers, System.Collections.Generic.List`1[UnityEngine.Transform]& syncableTransforms, System.Collections.Generic.List`1[UnityEngine.Animations.Rigging.SyncableProperties]& syncableProperties) (at ./Library/PackageCache/com.unity.animation.rigging@1.2.1/Runtime/AnimationRig/RigUtils.cs:188)
4. UnityEngine.Animations.Rigging.RigUtils.CreateSyncSceneToStreamData (UnityEngine.Animator animator, System.Collections.Generic.IList`1[T] layers) (at ./Library/PackageCache/com.unity.animation.rigging@1.2.1/Runtime/AnimationRig/RigUtils.cs:328)
5. UnityEngine.Animations.Rigging.SyncSceneToStreamLayer.Initialize (UnityEngine.Animator animator, System.Collections.Generic.IList`1[T] layers) (at ./Library/PackageCache/com.unity.animation.rigging@1.2.1/Runtime/AnimationRig/SyncSceneToStreamLayer.cs:21)
6. UnityEngine.Animations.Rigging.RigBuilderUtils.BuildPlayables (UnityEngine.Animator animator, UnityEngine.Playables.PlayableGraph graph, System.Collections.Generic.IList`1[T] layers, UnityEngine.Animations.Rigging.SyncSceneToStreamLayer syncSceneToStreamLayer) (at ./Library/PackageCache/com.unity.animation.rigging@1.2.1/Runtime/AnimationRig/RigBuilderUtils.cs:58)
7. UnityEngine.Animations.Rigging.RigBuilderUtils.BuildPlayableGraph (UnityEngine.Playables.PlayableGraph graph, UnityEngine.Animator animator, System.Collections.Generic.IList`1[T] layers, UnityEngine.Animations.Rigging.SyncSceneToStreamLayer syncSceneToStreamLayer) (at ./Library/PackageCache/com.unity.animation.rigging@1.2.1/Runtime/AnimationRig/RigBuilderUtils.cs:84)
8. UnityEngine.Animations.Rigging.RigBuilder.Build (UnityEngine.Playables.PlayableGraph graph) (at ./Library/PackageCache/com.unity.animation.rigging@1.2.1/Runtime/AnimationRig/RigBuilder.cs:172)
9. PK.Gameplay.Character.Common.Clips.AnimatorMixerBehaviour.PlayClip (UnityEngine.Playables.Playable playable, UnityEngine.Playables.FrameData info) (at Assets/Source/Gameplay/Character/Common/Clips/AnimatorTrack/AnimatorMixerBehaviour.cs:149)
10. PK.Gameplay.Character.Common.Clips.BaseBehaviour.ProcessFrame (UnityEngine.Playables.Playable playable, UnityEngine.Playables.FrameData info, System.Object playerData) (at Assets/Source/Gameplay/Character/Common/Clips/BaseBehaviour.cs:86)
11. UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr, Boolean&)
12. [/I]
13.