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Diffstat (limited to 'freetype/docs/CHANGES')
| -rw-r--r-- | freetype/docs/CHANGES | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/freetype/docs/CHANGES b/freetype/docs/CHANGES index a5db2d23a..803f02dc6 100644 --- a/freetype/docs/CHANGES +++ b/freetype/docs/CHANGES @@ -1,4 +1,200 @@ +CHANGES BETWEEN 2.5.2 and 2.5.3 + + I. IMPORTANT BUG FIXES + + - A vulnerability was identified and fixed in the new CFF driver + (cf. http://savannah.nongnu.org/bugs/?41697; it doesn't have a + CVE number yet). All users should upgrade. + + - More bug fixes related to correct positioning of composite + glyphs. + + - Many fixes to better protect against malformed input. + + + II. IMPORTANT CHANGES + + - FreeType can now use the HarfBuzz library to greatly improve the + auto-hinting of fonts that use OpenType features: Many glyphs + that are part of such features but don't have cmap entries are + now handled properly, for example small caps or superscripts. + Define the configuration macro FT_CONFIG_OPTION_USE_HARFBUZZ to + activate HarfBuzz support. + + You need HarfBuzz version 0.9.19 or newer. + + Note that HarfBuzz depends on FreeType; this currently causes a + chicken-and-egg problem that can be solved as follows in case + HarfBuzz is not yet installed on your system. + + 1. Compile and install FreeType without the configuration + macro FT_CONFIG_OPTION_USE_HARFBUZZ. + + 2. Compile and install HarfBuzz. + + 3. Define macro FT_CONFIG_OPTION_USE_HARFBUZZ, then compile + and install FreeType again. + + With FreeType's `configure' script the procedure boils down to + configure, build, and install Freetype, then configure, compile, + and install HarfBuzz, then configure, compile, and install + FreeType again (after executing `make distclean'). + + - All libraries FreeType depends on are now checked using the + `pkg-config' configuration files first, followed by alternative + methods. + + - The new value `auto' for the various `--with-XXX' library + options (for example `--with-harfbuzz=auto') makes the + `configure' script automatically link to the libraries it finds. + This is now the default. + + - In case FreeType's `configure' script can't find a library, you + can pass environment variables to circumvent pkg-config, and + those variables have been harmonized as a consequence of the + changes mentioned above: + + LIBZ -> removed; use LIBZ_CFLAGS and LIBZ_LIBS + LIBBZ2 -> removed; use BZIP2_CFLAGS and BZIP2_LIBS + LIBPNG_LDFLAGS -> LIBPNG_LIBS + + `./configure --help' shows all available environment variables. + + - The `freetype-config' script now understands option `--static' + to emit static linking information. + + +====================================================================== + +CHANGES BETWEEN 2.5.1 and 2.5.2 + + I. IMPORTANT BUG FIXES + + - Improving the display of some broken TrueType fonts introduced a + bug that made FreeType crash on some popular (but not fully + conformant) fonts like `ahronbd.ttf'. + + - Another round of improvements to correct positioning and hinting + of composite glyphs in TrueType fonts. + + + II. MISCELLANEOUS + + - Version 2.5.1 introduced a bug in handling embedded bitmap + strikes of TrueType fonts, causing garbage display under some + circumstances. + + - The `ftgrid' demo program couldn't be compiled in + non-development builds. + + +====================================================================== + +CHANGES BETWEEN 2.5 and 2.5.1 + + I. IMPORTANT BUG FIXES + + - For some WinFNT files, the last glyph wasn't displayed but + incorrectly marked as invalid. + + - The vertical size of glyphs was incorrectly set after a call to + `FT_GlyphSlot_Embolden', resulting in clipped glyphs. + + - Many fields of the `PCLT' table in SFNT based fonts (if accessed + with `FT_Get_Sfnt_Table') were computed incorrectly. + + - In TrueType fonts, hinting of composite glyphs could sometimes + deliver incorrect positions of components or even distorted + shapes. + + + II. IMPORTANT CHANGES + + - WOFF font format support has been added. + + - The auto-hinter now supports Hebrew. Greek and Cyrillic support + has been improved. + + - Support for the forthcoming `OS/2' SFNT table version 5, as can + be found e.g. in the `Sitka' font family for Windows 8.1. + + - The header file layout has been changed. After installation, + all files are now located in `<prefix>/include/freetype2'. + + Applications that use (a) `freetype-config' or FreeType's + `pkg-config' file to get the include directory for the compiler, + and (b) the documented way for header inclusion like + + #include <ft2build.h> + #include FT_FREETYPE_H + ... + + don't need any change to the source code. + + + III. MISCELLANEOUS + + - The stem darkening feature of the new CFF engine can now be + fine-tuned with the new `darkening-parameters' property. + + - `ftgrid' has been updated to toggle various engines with the `H' + key, similar to `ftview' and `ftdiff'. + + - The functionality of `ttdebug' has been greatly enhanced. + + . It now displays twilight, storage, and control value data; key + `T' shows the twilight point table, key `S' the storage data, + and key `C' the control value table. + + . Some keys have been reassigned from lowercase to their + uppercase equivalents; for example `q' to quit the program is + now `Q'. + + . Key `f' finishes the current function. + + . Key `R' restarts the debugger. + + . Keys `b' and `p' set a breakpoint. + + . Key `B' provides a function call backtrace. + + - Better support of ARMv7 and x86_64 processors. + + - Apple's `sbix' color bitmap format is now supported. + + - Improved auto-hinter rendering for many TrueType fonts, + especially in the range 20-40ppem. + + - A new face flag `FT_FACE_FLAG_COLOR' has been added (to be + accessed with the macro `FT_HAS_COLOR'). + + - `FT_Gzip_Uncompress' (modeled after zlib's `uncompress' + function) has been added; this is a by-product of the newly + added WOFF support. + + - Support for a build with `cmake' has been contributed by John + Cary <cary@txcorp.com>. + + - Support for x64 builds with Visual C++ has been contributed by + Kenneth Miller <kennethadammiller@yahoo.com> + + - Manual pages for most demo programs have been added. + + - The GETINFO bytecode instruction for TrueType fonts was buggy if + used to retrieve subpixel hinting information. It was necessary + to set selector bit 6 to get results for selector bits 7-10, + which is wrong. + + - Improved computation of emulated vertical metrics for TrueType + fonts. + + - Fixed horizontal start-up position of vertical phantom points in + TrueType bytecode. + + +====================================================================== + CHANGES BETWEEN 2.4.12 and 2.5 I. IMPORTANT BUG FIXES |