ys</tt> for 8-bit anti-aliased
        "gray" values
      </td>
    </tr>

    <tr>
      <td valign=top>
        <tt>num_grays</tt>
      </td>
      <td valign=top>
        this is only used for "gray" pixel modes, it gives the number of
        gray levels used to describe the anti-aliased gray levels --
        256&nbsp;by default with FreeType&nbsp;2
      </td>
    </tr>
    </table>
    </center>


    <p>Note that the sign of the <tt>pitch</tt> fields determines whether
    the rows in the pixel bu