1. A method for processing three-dimensional (3D) graphics data, the method comprising: removing, from a polygonal mesh representing a humanoid figure, a first plurality of vertices corresponding to a face of the humanoid figure; adding a second plurality of vertices to the polygonal mesh, wherein the second plurality of vertices shares a common topology with the removed first plurality of vertices and has a different geometry from that of the first plurality of vertices; aligning boundary vertices of the second plurality of vertices with boundary vertices corresponding to the face of the humanoid figure; and applying a smoothing filter to improve a surface continuity of the polygonal mesh with the aligned boundary.