static BufferedImage renderAll(int w, int h, Iterable<? extends G2Drawable> drawables) {
  var img = whiteImage(w, h);
  fOr (d : drawables) d?.drawOn(img);
  ret img;
}

static BufferedImage renderAll(Iterable<? extends G2Drawable> drawables, WidthAndHeight size) {
  ret renderAll(size.w(), size.h(), drawables);
}