I get a error message from skinnedMeshRenderer.SetBlendShapeWeight()

Thank you anyone!
This error message:
"Array index (0) is out of bounds (size=0)
UnityEngine.SkinnedMeshRenderer:SetBlendShapeWeight(Int32, Single)"

This follow is my code:

Code (CSharp):

1.  
2. if (index >= 0 && index < skinnedMeshRenderer.sharedMesh.blendShapeCount && !skinnedMeshRenderer.sharedMesh.Equals(null))
3. {
4.     skinnedMeshRenderer.SetBlendShapeWeight(index, Mathf.Clamp(value * 100f, 0, 100));
5. }
6.  

Steps&PS:

1.This mesh from "Mesh.CombineMeshes(combineInstances,false,false)" of multiple mesh.
2.This mesh's BlendShapes from "Mesh.AddBlendShapeFrame(,,,,)"
3.This error happen in Load scene from a to b.

best wishes!

 

That sounds like a bug.

Can you GetBlendShapeWeight or try logging other details of the blend shapes on the mesh?

 

Good idea,Thank you very much , I will try it and i added more details for this question.
Maybe you will have other idea.

 

You're probably changing the blend shapes without the renderer knowing they have been changed so its weight array is the wrong size.

Try skinnedMeshRenderer.sharedMesh = skinnedMeshRenderer.sharedMesh to let it know the mesh has changed. If that doesn't work, set it to null then back to the mesh.

 

Yes, you are right,I made a mistake, I did
"skinnedMeshRenderer.sharedMesh=null;skinnedMeshRenderer.sharedMesh=mesh;"
before i did
"mesh.AddBlendShapeFrame(,,,,)"

I fixed it just now

That's kind of you