Skinning bone weights of a vertex in the mesh.
| boneIndex0 | Index of first bone. | 
|---|---|
| boneIndex1 | Index of second bone. | 
| boneIndex2 | Index of third bone. | 
| boneIndex3 | Index of fourth bone. | 
| weight0 | Skinning weight for first bone. | 
| weight1 | Skinning weight for second bone. | 
| weight2 | Skinning weight for third bone. | 
| weight3 | Skinning weight for fourth bone. |