;FT_Err_Unimplemented_Feature&rsquo; error code if the raster used does not support direct composition.</p>
<p>XXX: For now, the standard raster doesn't support direct composition but this should change for the final release (see the files &lsquo;demos/src/ftgrays.c&rsquo; and &lsquo;demos/src/ftgrays2.c&rsquo; for examples of distinct implementations which support direct composition).</p>
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