1768944 - Update freetype2 to 2.12.1

Status: RESOLVED FIXED

(Core :: Graphics: Text, task)

Description

[Ryan VanderMeulen [:RyanVM]]

+++ This bug was initially created as a clone of Bug #1744073 +++

Note that we're going to be explicitly disabling the new OT-SVG support as it's not needed for Gecko and causes crashes if left enabled.

CHANGES BETWEEN 2.11.1 and 2.12.0

I. IMPORTANT CHANGES

• FreeType now handles OT-SVG fonts, to be controlled with
  FT_CONFIG_OPTION_SVG configuration macro. By default, it can
  only load the 'SVG ' table of an OpenType font. However, by using
  the svg-hooks property of the new 'ot-svg' module it is possible
  to register an external SVG rendering engine. The FreeType demo
  programs have been set up to use 'librsvg' as the rendering
  library.

  This work was Moazin Khatti's GSoC 2019 project.

II. MISCELLANEOUS

• The handling of fonts with an 'sbix' table has been improved.

  • Corrected bitmap offsets.

  • A new tag FT_PARAM_TAG_IGNORE_SBIX for FT_Open_Face makes
    FreeType ignore an 'sbix' table in a font, allowing applications
    to access the font's outline glyphs.

  • FT_FACE_FLAG_SBIX and FT_FACE_FLAG_SBIX_OVERLAY together
    with their corresponding preprocessor macros FT_HAS_SBIX and
    FT_HAS_SBIX_OVERLAY enable applications to treat 'sbix' tables
    as described in the OpenType specification.

• The internal 'zlib' code has been updated to be in sync with the
  current 'zlib' version (1.2.11).

• The previously internal load flag FT_LOAD_SBITS_ONLY is now
  public.

• Some minor improvements of the building systems, in particular
  handling of the 'zlib' library (internal vs. external).

• Support for non-desktop Universal Windows Platform.

• Various other minor bug and documentation fixes.

• The ftdump demo program shows more information for Type1 fonts
  if option -n is given.

• ftgrid can now display embedded bitmap strikes.

CHANGES BETWEEN 2.12.0 and 2.12.1

I. IMPORTANT BUG FIXES

• Loading CFF fonts sometimes made FreeType crash (bug introduced in
  version 2.12.0)

• Loading a fully hinted TrueType glyph a second time (without
  caching) sometimes yielded different rendering results if TrueType
  hinting was active (bug introduced in version 2.12.0).

• The generation of the pkg-config file freetype2.pc was broken if
  the build was done with cmake (bug introduced in version 2.12.0).

II. MISCELLANEOUS

• New option --with-librsvg for the configure script for better
  FreeType demo support.

• The meson build no longer enforces both static and dynamic
  versions of the library by default.

• The internal zlib library was updated to version 1.2.12. Note,
  however, that FreeType is not affected by CVE-2018-25032 since
  it only does decompression.

Comment 1

[Ryan VanderMeulen [:RyanVM]]

Green on Try:
https://treeherder.mozilla.org/jobs?repo=try&revision=aac60b4522ac34aa6811da8c03736f8d4755e12b

Comment 2

[Ryan VanderMeulen [:RyanVM]]

Attachment: Bug 1768944 - Update freetype2 to 2.12.1. r=jfkthame

Comment 3

[Ryan VanderMeulen [:RyanVM]]

Attachment: Bug 1768944 - Disable FreeType's OT-SVG support. r=jfkthame

This isn't necessary for Gecko and causes crashes if left enabled.
Disable it by default and add a new patch to be applied to future
updates.

Depends on D146121

Comment 4

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/675ae070ca44
Update freetype2 to 2.12.1. r=jfkthame

Comment 5

[Cristian Tuns]

https://hg.mozilla.org/mozilla-central/rev/675ae070ca44