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An enumeration type used to describe the format of a given glyph image. Note
that this version of FreeType only supports two image formats, even though
future font drivers will be able to register their own format.
.. data:: FT_GLYPH_FORMAT_NONE
The value 0 is reserved.
.. data:: FT_GLYPH_FORMAT_COMPOSITE
The glyph image is a composite of several other images. This format is only
used with FT_LOAD_NO_RECURSE, and is used to report compound glyphs (like
.. data:: FT_GLYPH_FORMAT_BITMAP
The glyph image is a bitmap, and can be described as an FT_Bitmap. You
generally need to access the 'bitmap' field of the FT_GlyphSlotRec structure
to read it.
.. data:: FT_GLYPH_FORMAT_OUTLINE
The glyph image is a vectorial outline made of line segments and Bezier arcs;
it can be described as an FT_Outline; you generally want to access the
'outline' field of the FT_GlyphSlotRec structure to read it.
.. data:: FT_GLYPH_FORMAT_PLOTTER
The glyph image is a vectorial path with no inside and outside contours. Some
Type 1 fonts, like those in the Hershey family, contain glyphs in this
format. These are described as FT_Outline, but FreeType isn't currently
capable of rendering them correctly.