System.Int32[]. [in, out] Array for the face adjacency array of the optimized mesh. The face adjacency is stored as an array of arrays. The innermost array is three indices of adjacent triangles, and the outermost array is one set of face adjacencies per triangle in the mesh.
faceRemap
System.Int32[]. [in, out] Destination buffer that contains the new index for each face.
Note: This method fails if the mesh is sharing its vertex buffer with another mesh, unless the MeshFlags.OptimizeIgnoreVerts flag is set in the param_MeshFlags_flags parameter.