[MPEG-OTSPEC] Skia-based ot-svg renderer hook to freetype

Hin-Tak Leung htl10 at users.sourceforge.net
Wed Jul 5 15:33:21 CEST 2023


   On Wednesday, 5 July 2023 at 20:49:42 GMT+8, Hin-Tak Leung <htl10 at users.sourceforge.net> wrote:  
  > On Wednesday, 5 July 2023 at 03:24:11 GMT+8, Cosimo Lupo <cosimo at anthrotype.com> wrote:
 > > Hin-Tak, what do you mean by "Google OT-SVG fonts"? They're only one OT-SVG format.
> Yes and no. I don't have that many OT-SVG fonts - 3 from Adobe/Mozilla sources, and the rest (more than 2 and less than 10) from Google Fonts. The two sets behave differently, and get processed by two different code paths in freetype2-demos. The Google set triggers the memory exhaustion bug I fixed in freetype2-demos about a month ago; the Adobe/Mozilla set does not.
> That was all part of the activities around the time with the Google font SVG subsetting bug. Look at the freetype2-demo log around the same time you investigated and fixed the subletting bug.
Actually having looked at Skia and skia-python's SVG related functionality last night, Skia also follows two slightly different code paths for the two "types" of OT-SVG fonts. There will be a small "if x else ..." clause separating the two in Skia related code, if /when I finish.

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