CHANGES BETWEEN 2.2.1 and 2.2.2
I. IMPORTANT BUG FIXES
- Various integer overflows have been fixed.
- PFB fonts with MacOS resource fork weren't handled correctly on
non-MacOS platforms.
- The PCF font loarder has been seriously hardened against malformed
font files.
II. IMPORTANT CHANGES
- the unpatented hinter is now part of the default build of the
library, and we added code to automatically support "tricky"
fonts that need it.
what this means is that FreeType should "just work" with certain
Asian fonts, like MingLiu, which cannot properly load without a
bytecode interpreter, but fortunately do not use any of the
patented bytecode opcodes.
Note that the API didn't change, so you can still force
unpatented hinting with a special parameter to FT_Open_Face
as well.
if you're an embedded systems developer, you might want to
*disable* the feature to save code space by undefining
TT_CONFIG_OPTION_UNPATENTED_HINTING in ftoption.h.
- LCD-optimized rendering is now disabled in all default builds
of the library, mainly due to patent reasons. For more information
see:
http://lists.gnu.org/archive/html/freetype/2006-09/msg00064.html
a new configuration macro FT_CONFIG_OPTION_SUBPIXEL_RENDERING has
been introduced in ftoption.h; manually define it in this file
if you want to re-enable the feature.
the change only affects the implementation, not the FreeType API.
This means that clients don't need to be modified, because the
library still generates LCD decimated bitmaps, but with the added
constraint that R=G=B on each triplet.
- Some computation bugs in the TrueType bytecode interpreter were found,
which allow us to get rid of very subtle and rare differences we had
with the Windows renderer.
III. MISCELLANEOUS
- TrueType glyph loading is now about 25% faster.
- the anti-aliased rasterizer has been optimized and is now 15% to 25%
percent faster than the previous one, depending on content
- the Type 1 loader has been improved; as an example, it now skips
over top-level dictionaries properly
======================================================================
diff --git a/ChangeLog b/ChangeLog
index 0bbf93a..0c285d6 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -5,6 +5,18 @@
horizontal and vertical hinting for the purpose of debugging
the auto-fitter
+ * include/freetype/config/ftoption.h, devel/ftoption.h:
+ introducing the new FT_CONFIG_OPTION_SUBPIXEL_RENDERING to
+ control wether we want to compile LCD-optimized rendering code
+ (à la ClearType) or not. The macro *must* be disabled in default
+ builds of the library for patent reasons.
+
+ * src/smooth/ftsmooth.c: disabling LCD-specific rendering when
+ FT_CONFIG_OPTION_SUBPIXEL_RENDERING isn't defined at compile
+ time. This only changes the content of the rendered glyph to
+ match the one of normal gray-level rendering, hence clients
+ should not need to be modified.
+
2006-09-18 Garrick Meeker <garrick@digitalanarchy.com>
* src/base/ftmac.c (FT_New_Face_From_FOND): Fall back to SFNT if