Filed here: https://bugs.freedesktop.org/show_bug.cgi?id=50848
behdad On 06/07/2012 05:47 PM, Werner LEMBERG wrote: > >>> It depends on a flag in the glyph's data, ROUND_XY_TO_GRID, if the >>> subglyph's offset is given as xy values. However, for the >>> particular DejaVu glyph, the subglyphs all have a zero offset, but >>> point coordinates are rounded to integers anyways as part of the >>> normal rasterization process. >> >> Right. So I guess my question is, why are they rounded differently? > > I spoke too hastily since I hadn't looked closely enough at the > subglyphs. > > It's a bug in the font. The glyph ▟ consists of three elements: > > <TTGlyph name="uni259F" xMin="-20" yMin="-512" xMax="1593" yMax="1576"> > <component glyphName="uni2596" x="0" y="0" flags="0x1004"/> > <component glyphName="uni2597" x="0" y="0" flags="0x1004"/> > <component glyphName="uni259D" x="0" y="0" flags="0x1004"/> > </TTGlyph> > > Note that the 4 in the flags value 0x1004 means ROUND_XY_TO_GRID. > > Now the components. The first one is a real glyph: > > <TTGlyph name="uni2596" xMin="-20" yMin="-512" xMax="786" yMax="532"> > <contour> > <pt x="-20" y="-512" on="1"/> > <pt x="-20" y="532" on="1"/> > <pt x="786" y="532" on="1"/> > <pt x="786" y="-512" on="1"/> > </contour> > </TTGlyph> > > The other two, however, are not: > > <TTGlyph name="uni2597" xMin="787" yMin="-512" xMax="1593" yMax="532"> > <component glyphName="uni2596" x="807" y="0" flags="0x1004"/> > </TTGlyph> > > <TTGlyph name="uni259D" xMin="787" yMin="532" xMax="1593" yMax="1576"> > <component glyphName="uni2596" x="807" y="1044" flags="0x1004"/> > </TTGlyph> > > Both have the flag 0x1004, meaning that the offsets are rounded to the > grid... > > The real solution is to redefine uni259F (and all other similar block > characters) having uni2596 three times as subglyphs, with proper > offsets, and with flags values 0x1000. I've justed tested it: no > gaps. > > I wonder how such glaring problems can be part of one of the most used > free fonts. > > > Werner _______________________________________________ Freetype-devel mailing list Freetype-devel@nongnu.org https://lists.nongnu.org/mailman/listinfo/freetype-devel