Question Blend Shape copied to new mesh missing in animation clip

I copied blend shape origin mesh to new mesh.
It seems to copy completely as you can see below screenshot. But It's not working in animation.

Mesh sourceMesh = _smRenderers[i].sharedMesh;

Mesh targetMesh = smr.sharedMesh;

Vector3[] deltaVertices = new Vector3[sourceMesh.vertexCount];

Vector3[] deltaNormals = new Vector3[sourceMesh.vertexCount];

Vector3[] deltaTangents = new Vector3[sourceMesh.vertexCount];

for(int shapeIndex = 0; shapeIndex<sourceMesh.blendShapeCount; ++shapeIndex)

{

    string shapeName = sourceMesh.GetBlendShapeName(shapeIndex);             

    if(targetMesh.GetBlendShapeIndex(shapeName) < 0)

    {

        int frameCount = sourceMesh.GetBlendShapeFrameCount(shapeIndex);

        for(int frameIndex = 0; frameIndex<frameCount; frameIndex++)

        {

              float frameWeight = sourceMesh.GetBlendShapeFrameWeight(shapeIndex, frameIndex);

              sourceMesh.GetBlendShapeFrameVertices(shapeIndex, frameIndex, deltaVertices, deltaNormals, deltaTangents);

              targetMesh.AddBlendShapeFrame(shapeName, frameWeight, deltaVertices, deltaNormals, deltaTangents);

          }

    }

}

this is my copy code.
(it refered https://extra-ordinary.tv/2020/09/07/copying-blendshapes-in-unity-with-a-script)
So I check animation clip in animation window. Blend shape in animation clip is missing.
I think link is broken during copy mesh to mesh.


can you guys help me ?

 

any one any idea???

 

Blendshape retargeting can be a mess, it needs to have the exact name to work. I see the animation windows says "Basic_Face", try renaming your face gameobject like that instead of the current "FACE_O".
Also check the blendshape name is all the same, from blendshape name to each blendshape target.
I don't see the blendshape name in your skinnedmesh renderer, in my case it is named like this "blendshapename.blendshapetarget".

 

Thank you very much~!!