p is generated.</p>
<p>If the <a href="ft2-raster.html#FT_RASTER_FLAG_XXX">FT_RASTER_FLAG_DIRECT</a> bit flag is set in &lsquo;flags&rsquo;, the raster will call the &lsquo;gray_spans&rsquo; callback to draw gray pixel spans, in the case of an aa glyph bitmap, it will call &lsquo;black_spans&rsquo;, and &lsquo;bit_test&rsquo; and &lsquo;bit_set&rsquo; in the case of a monochrome bitmap. This allows direct composition over a pre-existing bitmap through user-provided callbacks to perform the span drawing/comp