> In subpixel positioning you have to shift glyph to take into account
> previous fractional advance. If you follow that by hinting, the
> result is not deterministic. The bounding box may differ by 1
> pixel. Warping is more stable basically because its shift will undo
> some of the original shift.
This is *exactly* what has to be investigated. As I've written in a
previous mail, the question is how to tell the hinting engine what
fractional offset we have. In other words, glyph shifting and hinting
must be *one* operation to avoid the issue you are describing above.
I can only repeat: Hinting and subpixel positioning *can* work
together! There is absolutely no reason why this shouldn't be
possible.
Werner
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