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Announcing FreeType 2.11.0
Announcing FreeType 2.11.0
Mon, 19 Jul 2021 16:40:45 +0000 (UTC)
FreeType 2.11.0 has been released.
It is available from
The latter site also holds older versions of the FreeType library.
See below for the relevant snippet from the CHANGES file.
PS: Downloads from savannah.nongnu.org will redirect to your nearest
mirror site. Files on mirrors may be subject to a replication
delay of up to 24 hours. In case of problems use
FreeType 2 is a software font engine that is designed to be small,
efficient, highly customizable, and portable while capable of
producing high-quality output (glyph images) of most vector and bitmap
Note that FreeType 2 is a font service and doesn't provide APIs to
perform higher-level features, like text layout or graphics processing
(e.g., colored text rendering, `hollowing', etc.). However, it
greatly simplifies these tasks by providing a simple, easy to use, and
uniform interface to access the content of font files.
FreeType 2 is released under two open-source licenses: our own
BSD-like FreeType License and the GPL. It can thus be used by any
kind of projects, be they proprietary or not.
CHANGES BETWEEN 2.10.4 and 2.11.0
I. IMPORTANT CHANGES
- A new rendering module has been added to create 8-bit Signed
Distance Field (SDF) bitmaps for both outline and bitmap glyphs.
The new rendering mode is called `FT_RENDER_MODE_SDF`, the pixel
mode is `FT_PIXEL_MODE_GRAY8`, and the corresponding raster flag
This work was Anuj Verma's GSoC 2020 project.
- A new, experimental API is now available for surfacing properties
of 'COLR' v1 color fonts (as the name says, this is an extension
to the 'COLR' table for outline color fonts using the SFNT
container format). 'COLR' v1 fonts are a recently proposed
addition to OFF and OpenType; specification work currently happens
'COLR' v1 is expected to be merged to OpenType; the ISO
standardisation process for adding 'COLR' v1 as an amendment to
OFF is underway.
Functions similar to the already existing 'COLR' API have been
added to access the corresponding data.
Retrieve the root paint for a given glyph ID.
Access the layers of a `PaintColrLayers` table.
Retrieve the 'color stops' on a color line. As an input, a
color stop iterator gets used, which in turn is retrieved from
Dereference an `FT_OpaquePaint` object and retrieve the
corresponding `FT_COLR_Paint` object, which contains details
on how to draw the respective 'COLR' v1 `Paint` table.
- FreeType has moved its infrastructure to
A side effect is that the git repositories are now called
`freetype.git` and `freetype-demos.git`, which by default expand
to the directories `freetype` and `freetype-demos`, respectively.
The documentation has been updated accordingly.
FreeType's Savannah repositories will stay; they are now mirrors
of the 'freedesktop.org' repositories.
- A new function `FT_Get_Transform` returns the values set by
- A new configuration macro `FT_DEBUG_LOGGING` is available. It
provides extended debugging capabilities for FreeType, for example
showing a time stamp or displaying the component a tracing message
comes from. See file `docs/DEBUG` for more information.
This work was Priyesh Kumar's GSoC 2020 project.
- The legacy Type 1 and CFF engines are further demoted due to lack
of CFF2 charstring support. You now need to use `FT_Property_Set`
to enable them besides the `T1_CONFIG_OPTION_OLD_ENGINE` and
`CFF_CONFIG_OPTION_OLD_ENGINE` options, respectively.
- The experimental 'warp' mode (AF_CONFIG_OPTION_USE_WARPER) for the
auto-hinter has been removed.
- The smooth rasterizer performance has been improved by >10%. Note
that due to necessary code changes there might be very subtle
differences in rendering. They are not visible by the eye,
- PCF bitmap fonts compressed with LZW (these are usually files with
the extension `.pcf.Z`) are now handled correctly.
- Improved Meson build files, including support to build the
FreeType demo programs.
- A new demo program `ftsdf` is available to display Signed Distance
Fields of glyphs.
- The `ftlint` demo program has been extended to do more testing of
its input. In particular, it can display horizontal and vertical
acutances for quality assessment, together with computing MD5
checksums of rendered glyphs.
[The acutance measures how sharply the pixel coverage changes at
glyph edges. For monochrome bitmaps, it is always 2.0 in either
X or Y direction. For anti-aliased bitmaps, it depends on the
hinting and the shape of a glyph and might approach or even reach
value 2.0 for glyphs like 'I', 'L', '+', '-', or '=', while it
might be lower for glyphs like 'O', 'S', or 'W'.]
- The `ttdebug` demo program didn't show changed point coordinates
(bug introduced in version 2.10.3).
- It is now possible to adjust the axis increment for variable fonts
in the `ftmulti` demo program.
- It is now possible to change the hinting engine in the `ftstring`
- The graphical demo programs work better now in native color depth
on win32 and x11.
- Announcing FreeType 2.11.0,
Werner LEMBERG <=