lts if you load a glyph at the size of
      24&nbsp;pixels, or a glyph at the size at 12&nbsp;pixels scaled
      by&nbsp;2 through a transform, because the hints will have been
      computed differently (except you have disabled hints).</font></p>

      <p>If you ever need to use a non-orthogonal transformation with
      optimal hints, you first have to decompose your transformation into a
      scaling part and a rotation/shearing part.  Use the scaling part to
      compute a new character pixel size