hyperfb_bitblt
hyperfb_bitblt(sc, x, y, x, y, wi, he, RopInv);
hyperfb_bitblt(sc, x, y, x, y, wi, he, RopInv);
static void hyperfb_bitblt(void *, int, int, int, int, int,
hyperfb_bitblt(sc, xs, y, xd, y, width, height, RopSrc);
hyperfb_bitblt(sc, x, ys, x, yd, width, height, RopSrc);
sc->sc_gc.gc_bitblt = hyperfb_bitblt;