vt_fb_drawrect
vt_fb_drawrect(vd, x1, y1, x2, y2, fill, color);
.vd_drawrect = vt_fb_drawrect,
.vd_drawrect = vt_fb_drawrect,
.vd_drawrect = vt_fb_drawrect,
vd_drawrect_t vt_fb_drawrect;
.vd_drawrect = vt_fb_drawrect,
.vd_drawrect = vt_fb_drawrect,
.vd_drawrect = vt_fb_drawrect,