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This commit is contained in:
Ingo Weinhold
+150
-5
@@ -1,4 +1,149 @@
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LATEST CHANGES BETWEEN 2.1.1 and 2.1.0
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LATEST CHANGES BETWEEN 2.1.3 and 2.1.2
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I. IMPORTANT BUG FIXES
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- FT_Vector_Transform had been incorrectly modified in 2.1.2, resulting
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in incorrect transformations being applied (for example, rotations
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were processed in opposite angles).
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- The format 8 and 12 TrueType charmap enumeration routines have been
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fixed (FT_Get_Next_Char returned invalid values).
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- The PFR font driver returned incorrect advance widths if the outline
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and metrics resolution defined in the font file were different.
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- FT_Glyph_To_Bitmap now returns successfully when called with an
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FT_BitmapGlyph argument (it previously returned an error).
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- A bug in the Type 1 loader that prevented valid font bounding boxes to
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be loaded from multiple master fonts.
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- The SFNT validation code has been rewritten. FreeType can now load
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"broken" fonts that were usable on Windows, but not with previous
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versions of the library.
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- The computation of bearings in the BDF driver has been fixed.
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- The Postscript hinter crashed when trying to hint certain glyphs (more
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precisely, when trying to apply hints to an empty glyph outline).
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- The TrueType glyph loader now supports composites in "Apple format"
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(they differ slightly from Microsoft/OpenType ones in the way transform
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offsets are computed).
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- FreeType was very slow at opening certain asian CID/CFF fonts, due
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to fixed increment in dynamic array re-allocations. This has been
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changed to exponential behaviour to get acceptable performance
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II. IMPORTANT CHANGES
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- the PCF driver now supports gzip-compressed font files natively. This
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means that you'll be able to use all these bitmap fonts that come
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with XFree86 with FreeType (and libXft/libXft2, by extension).
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- The automatic and postscript hinters have both been updated. This
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results in a relatively important increase of rendering quality since
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many nasty defaults have been supressed. Please visit the web page:
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http://www.freetype.org/hinting/smooth-hinting.html
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for additional details on this topic.
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- The "load_flags" parameter of FT_Load_Glyph is now an FT_Int32
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(instead of just being an FT_Int). This breaks source and binary
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compatibility for 16bit systems only, while retaining both of them for
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32 and 64 bit ones.
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Some new flags have been added consequently:
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FT_LOAD_NO_AUTOHINT :: Disable the use of the auto-hinter
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(but not native format hinters).
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FT_LOAD_TARGET_NORMAL :: Hint and render for normal anti-aliased
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displays.
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FT_LOAD_TARGET_MONO :: Hint and render for 1-bit displays.
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FT_LOAD_TARGET_LCD :: Hint and render for horizontal RGB or BGR
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sub-pixel displays (like LCD screens).
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THIS IS STILL EXPERIMENTAL!
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FT_LOAD_TARGET_LCD_V :: Same as FT_LOAD_TARGET_LCD, for vertical
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sub-pixel displays (like rotated LCD
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screens). THIS IS STILL EXPERIMENTAL!
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FT_LOAD_MONOCHROME is still supported, but only affects rendering, not
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the hinting.
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Note that the 'ftview' demo program available in the 'ft2demos' package
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has been updated to support LCD-optimized display on non-paletted
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displays (under Win32 and X11)
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- The PFR driver now supports embedded bitmaps (all formats supported),
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and returns correct kerning metrics for all glyphs
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- The TrueType charmap loader now supports certain "broken" fonts that
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load under Windows without problems.
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- The cache API has been slightly modified (it's still a beta!):
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- The type FTC_ImageDesc has been removed; it is now replaced by
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FTC_ImageTypeRec. Note that one of its fields is a `load_flag'
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parameter for FT_Load_Glyph.
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- The field "num_grays" of FT_SBitRec has been changed to "max_grays"
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in order to fit within a single byte. Its maximum value is thus 255
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(instead of 256 as previously).
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III. MISCELLANEOUS
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- Added support for the DESTDIR variable during "make install". This
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simplifies packaging of FreeType.
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- included modified copies of the ZLib sources in 'src/gzip' in order
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to support gzip-compressed PCF fonts. We do not use the system-provided
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zlib for now, though this is a probable enhancement for future releases
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- The DocMaker tool used to generate the on-line API reference has been
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completely rewritten. It is now located in
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"src/tools/docmaker/docmaker.py". Features:
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- better cross-referenced output
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- more polished output
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- uses Python regular expressions (though it didn't speed the
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program)
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- much more modular structure, which allows for different "backends"
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in order to generate HTML, XML, or whatever format.
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One can regenerate the API reference by calling:
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python src/tools/docmaker/docmaker.py \
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--prefix=ft2 \
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--title=FreeType-2.1.3 \
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--output=<outputdirectory>
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include/freetype/*.h \
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include/freetype/config/*.h \
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include/freetype/cache/*.h
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- A new, experimental, support for incremental font loading (i.e.,
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loading of fonts where the glyphs are not in the font file itself, but
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provided by an external component, like a Postscript interpreter) has
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been added by Graham Asher. This is still work in progress, however.
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- A new, EXPERIMENTAL, path stroker has been added. It doesn't suffer
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from severe rounding errors and treat bezier arcs directly. Still
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work in progress (i.e. not part of the official API). See the file
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<freetype/ftstroker.h> for some of the details.
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- The massive re-formatting of sources and internal re-design is still
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under-way. Many internal functions, constants, and types have been
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renamed.
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========================================================================
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LATEST CHANGES BETWEEN 2.1.2 and 2.1.1
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I. IMPORTANT BUG FIXES
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@@ -6,12 +151,12 @@ LATEST CHANGES BETWEEN 2.1.1 and 2.1.0
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a new face was opened (with the FT_CONFIG_OPTION_USE_CMAPS options
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enabled), causing many applications to not be able to display text
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correctly with the 2.1.x releases.
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- The PFR driver had a bug in its composite loading code that produces
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incorrectly placed accents with many fonts.
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- The Type42 driver crashed sometimes due to a nasty bug.
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- The Type 1 custom encoding charmap didn't handle the case where the
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first glyph index wasn't 0.
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@@ -87,7 +232,7 @@ LATEST CHANGES BETWEEN 2.1.1 and 2.1.0
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- The cache sub-system has been optimized in important ways. Cache hits
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are now significantly faster. For example, using the CMap cache is
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about twice faster than calling FT_Get_Char_Index on most platforms.
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about twice faster than calling FT_Get_Char_Index on most platforms.
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Similarly, using an SBit cache is about five times faster than loading
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the bitmaps from a bitmap file, and 300 to 500 times faster than
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generating them from a scalable format.
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