Reference Manual - 0.9.25
IDirectFBSurface   BatchBlit

Blit a bunch of areas at once.

BatchBlit (
  IDirectFBSurface   * thiz,
  IDirectFBSurface   * source,
  const DFBRectangle   * source_rects,
  const DFBPoint   * dest_points,
  int   num
);

Source may be the same surface.