AnimationLayerMixerPlayable Problem in 2017.1.0 b5

Code (CSharp):

1. using UnityEngine;
2. using UnityEngine.Playables;
3. using UnityEngine.Animations;
4.  
5. public class MixerTest : MonoBehaviour {
6.  
7.     [Header("---Layer 0---")]
8.     public AnimationClip layer0Clip;
9.     [Header("---Layer 1---")]
10.     [Range(0f, 1f)]
11.     public float weight;
12.     public bool isAdditive;
13.     public AvatarMask mask;
14.     public AnimationClip layer1Clip0;
15.     public AnimationClip layer1Clip1;
16.     [Range(0f, 1f)]
17.     public float blendingWeight;
18.  
19.     private PlayableGraph graph;
20.     private AnimationLayerMixerPlayable layerMixerPlayable;
21.     private AnimationMixerPlayable mixerPlayable;
22.  
23.     void Start () {
24.         graph = PlayableGraph.Create();
25.  
26.         AnimationClipPlayable layer0ClipPlayable = AnimationClipPlayable.Create(graph, layer0Clip);
27.         AnimationClipPlayable layer1ClipPlayable0 = AnimationClipPlayable.Create(graph, layer1Clip0);
28.         AnimationClipPlayable layer1ClipPlayable1 = AnimationClipPlayable.Create(graph, layer1Clip1);
29.  
30.         layerMixerPlayable = AnimationLayerMixerPlayable.Create(graph, 2);
31.         layerMixerPlayable.SetInputWeight(0, 1f);
32.  
33.         layerMixerPlayable.SetLayerMaskFromAvatarMask(1, mask);
34.  
35.         mixerPlayable = AnimationMixerPlayable.Create(graph, 2);
36.         graph.Connect(layer1ClipPlayable0, 0, mixerPlayable, 0);
37.         graph.Connect(layer1ClipPlayable1, 0, mixerPlayable, 1);
38.  
39.         graph.Connect(layer0ClipPlayable, 0, layerMixerPlayable, 0);
40.         graph.Connect(mixerPlayable, 0, layerMixerPlayable, 1);
41.  
42.         AnimationPlayableOutput output = AnimationPlayableOutput.Create(graph, "Animation", GetComponent<Animator>());
43.         output.SetSourcePlayable(layerMixerPlayable);
44.  
45.         graph.Play();
46.     }
47.  
48.     private void Update () {
49.         layerMixerPlayable.SetLayerAdditive(1, isAdditive);
50.         layerMixerPlayable.SetInputWeight(1, weight);
51.         mixerPlayable.SetInputWeight(0, 1f - blendingWeight);
52.         mixerPlayable.SetInputWeight(1, blendingWeight);
53.     }
54.  
55. }
56.  

As shown in the above video, when an AnimationClip in the second layer is blended with a null one, the blending behaviour is weird and discontinuous. While the below video shows what I expected to see.

Did I do something wrong?

 

Please. I want to know whether it is by design

 

I might not have the right answer, but we have similar issues. We think it might be to do with the idea that every input on AnimationLayerMixer is always trying to mix with SOMETHING that came before it . i.e. if the first animation attached to an AnimationLayerMixer has a weight of < 1, the mixer is trying to mix with whatever preceded it. And in that case, it'd be mixing with... "null".. or TPose, in the case of an animation.

So in this case, make sure you have a base "aiming pose" or another playable plugged into input zero of the AnimationLayerMixer, and ensure its weight is always 1, before adding on your additive aiming layer into input One

 

I have the same question in unity 2018