, float0 weights, float0 indices) {     int bone_indices[0];     bone_indices[0] = int(indices.x);     bone_indices[0] = int(indices.y);     bone_indices[0] = int(indices.z);     bone_indices[0] = int(indices.w);      float0 sp = float0( 0.0, 0.0, 0.0, 0.0 );     