I used a zoom-in tool to examine the pixels in your before and after screen shots. The left sides of the stems were unchanged while the right sides were darker.
Ah, okay ;)
Alexei has explained how this is the result of using the existing emboldener. I don't think it is a problem. It only caught my eye because the CFF stem darkener, which works on the outline, applies darkening to both sides. If we took the approach of darkening TT outlines before applying the autohinter, I'd expect the same: darkening on both sides.
Technically, the autohinter could apply emboldening *before* applying hints. That would require more fiddling and/or more emboldening calls that may drag down performance, I didn't seriously look at that yet. One-sided emboldening could be a problem then, I don't know..
As for subpixel rendering, that's to be expected. For vertical LCD stripes, it should sharpen vertical stems.
Hm, yeah. I noticed that DirectWrite's grayscale output (e.g. in Edge) doesn't look too clean either. Oh well. It's high time high-DPI screens flood the market.
_______________________________________________ Freetype-devel mailing list Freetype-devel@nongnu.org https://lists.nongnu.org/mailman/listinfo/freetype-devel
