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Re: Incorrect glyph stretching and positioning when rendering at differe
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From: |
Werner LEMBERG |
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Subject: |
Re: Incorrect glyph stretching and positioning when rendering at different x and y resolutions. |
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Date: |
Fri, 21 Aug 2020 18:57:29 +0200 (CEST) |
> where FreeSerif.ttf can be downloaded from
> http://ftp.gnu.org/gnu/freefont/freefont-ttf-20120503.zip (the
> specific release of FreeFont is important!).
OK.
> The program loads two glyphs (codepoints 0x21d0 LEFTWARDS DOUBLE
> ARROW and 0x21d1 UPWARDS DOUBLE ARROW) and renders them at 200dpi
> horizontal resolution and 100dpi vertical resolution.
[Those are glyphs 'arrowdblleft' and 'arrowdblup' in the font.]
> The result (bad.txt) shows that while the horizontal arrow is
> correctly stretched by a factor of 2 in x, the vertical arrow is
> incorrectly stretched in y instead, and also badly centered in y.
This is a bug in FreeType, probably also related to
https://savannah.nongnu.org/bugs/?55001
Please open an issue in the Savannah tracker, and thanks for the
report!
Werner