+ -g
+ Allow the resulting image to have a non-power-of-two size. By default the
+ image size is rounded up to a power of two for maximum compatibility.
+
+ -f <num>
+ Generate a distance field texture. The argument controls the amount of
+ oversampling when calculating distances. Larger values may produce more
+ accurate results but take longer to process. Distance fields are always
+ stored without alpha and with large/positive values indicating the inside
+ of glyphs; the -t and -i options are ignored.
+