void polyfill(int mode, struct pvertex *verts, int nverts);
void polyfill_wire(struct pvertex *verts, int nverts);
void polyfill_flat(struct pvertex *verts, int nverts);
void polyfill(int mode, struct pvertex *verts, int nverts);
void polyfill_wire(struct pvertex *verts, int nverts);
void polyfill_flat(struct pvertex *verts, int nverts);