It did used to work, not after latest update. plane = new Plane(mat, 500, 500); scene.addChild(plane)
var subGeometry:SubGeometry = SubGeometry(Mesh(plane).geometry.subGeometries[0]).clone(); Mesh(plane).geometry.addSubGeometry(subGeometry); Mesh(plane).subMeshes[1].material = mat2; JUst put something like if (_secondaryUvs) clone.updateSecondaryUVData(_secondaryUvs.concat());
