632755a3b1
The modifier performed the 'bind' operation not in the bind operator, but delayed in the mesh evaluation. This saved the result in a CoW copy instead of in the actual modifier data. The binding operator now follows the same approach as Mesh Deform: it forces the modifiers to run on the real (non-CoW) data, making it possible for the modifier to store the binding data. This commit also ports the usage of DerivedMesh to Mesh.