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@ -1,3 +1,146 @@ |
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LATEST CHANGES BETWEEN 2.1.0 and 2.0.9 |
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I. IMPORTANT BUG FIXES |
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- The TrueType bytecode interpreter has been fixed to produce |
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_exactly_ the same output as FreeType 1.x. Previous differences |
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were due to slightly distinct fixed-point computation routines |
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used to perform dot products and vector length measurements. |
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It seems that native TrueType hinting is _extremely_ sensitive |
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to rounding errors. The required vector computation routines have |
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been optimized and placed within the "ttinterp.c" file. |
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II. NEW FEATURES |
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- The 'configure' script used on Unix systems has been modified to |
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check that GNU Make is being used to build the library. If not, |
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it will display a message proposing to use the GNUMAKE environment |
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variable to name it.. |
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The Unix-specific file README.UNX has been modified accordingly |
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III. MISCELLANEOUS |
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- The FreeType License in 'docs/FTL.txt' has been updated to include |
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a proposed preffered disclaimer. If you're using FreeType in your |
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products, you're encouraged (but not mandated) to use the following |
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text in your documentation: |
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""" |
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Portions of this software are copyright © 1996-2002 The FreeType |
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Project (www.freetype.org). All rights reserved. |
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""" |
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- The default size of the render pool has been reduced to 16 Kb. This |
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shouldn't result in any noticeable performance penalty, unless you're |
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using the engine as-is to render very large and complex glyphs.. |
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- The FreeType 2 Re-Design has begun. More information can be found |
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at the following web address: |
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http://www.freetype.org/freetype2/redesign.html |
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The following internal changes have been performed within the sources |
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of this release: |
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- many internal types have been renamed to increase consistency. |
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the following should be true, except for public types: |
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* all structure types have a name ending in "Rec" (short for |
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'record'). |
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* a pointer-to-structure type has the same name than the |
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structure, _without_ the "Rec" suffix. |
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for example: |
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typedef struct FooRec_ |
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{ |
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.... |
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} FooRec, *Foo; |
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- many internal macros have been renamed to increase consistency. |
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the following should be true: |
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* all macros have a name beginning in "FT_". This required |
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a few changes like: |
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ALLOC => FT_ALLOC |
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FREE => FT_FREE |
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REALLOC => FT_REALLOC |
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* all macro are completely UPPERCASE. This required a few |
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changes like: |
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READ_Short => FT_READ_SHORT |
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NEXT_Short => FT_NEXT_SHORT |
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GET_ULongLE => FT_GET_ULONG_LE |
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MEM_Set => FT_MEM_SET |
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MEM_Copy => FT_MEM_COPY |
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etc.. |
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* whenever possible, all macro names follow the FT_<OBJECT>_<METHOD> |
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pattern. For example: |
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ACCESS_Frame => FT_FRAME_ENTER |
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FORGET_Frame => FT_FRAME_EXIT |
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EXTRACT_Frame => FT_FRAME_EXTRACT |
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RELEASE_Frame => FT_FRAME_RELEASE |
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FILE_Pos => FT_STREAM_POS |
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FILE_Seek => FT_STREAM_SEEK |
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FILE_Read => FT_STREAM_READ |
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FILE_ReadAt => FT_STREAM_READ_AT |
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READ_Fields => FT_STREAM_READ_FIELDS |
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- many internal functions have been renamed to follow the |
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FT_<Object>_<Method> pattern. For example: |
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FT_Seek_Stream => FT_Stream_Seek |
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FT_Read_Stream_At => FT_Stream_ReadAt |
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FT_Done_Stream => FT_Stream_Close |
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FT_New_Stream => FT_Stream_Open |
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FT_New_Memory_Stream => FT_Stream_OpenMemory |
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FT_Extract_Frame => FT_Stream_ExtractFrame |
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note that method names do not contain "_". |
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- the FT_ALLOC_ARRAY and FT_REALLOC_ARRAY have been removed and |
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are now replaced by FT_NEW_ARRAY and FT_RENEW_ARRAY which do |
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not take a type as the fourth argument. Instead, the array |
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element type size is computed automatically from the type |
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of the target pointer used. |
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- a new object class, named FT_CMap has been introduced. These |
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internal objects are used to model character maps. This eases |
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the support of additional charmap types within the engine |
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- a new configuration file named "ftstdlib.h" has been added |
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to 'include/freetype/config'. It is used to define aliases |
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for _every_ routine of the ISO C library that the font engine |
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uses. Each aliases has a "ft_" prefix (e.g. "ft_strlen" is an |
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alias for "strlen"). |
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this is used to ease the porting of FT2 to exotic runtime |
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environments where the ISO C Library isn't available (e.g. |
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XFree86 extension modules). |
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More details are available in the "ChangeLog" file. |
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LATEST CHANGES BETWEEN 2.0.9 and 2.0.8 |
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I. IMPORTANT BUG FIXES |
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David Turner
23 years ago