Test vertical maxima instead of vertical minima to identify the highest
contour (and vice versa to identify the lowest contour). Doing so will
allow support of diacritics that consist of more than a single outline.
This works because of the topological constraints ensured by the adjustment
database.
* src/autofit/aflatin.c (af_find_highest_contour,
af_glyph_hints_apply_vertical_separation_adjustments): Implement it.
We need this for better positioning support of diacritics.
* src/autofit/afhints.h (AF_GlyphHintsRec): New fields `contour_y_minima`
and `contour_y_maxima`, together with its embedded variants.
* src/autofit/afhints.c (af_glyph_hints_done, af_glyph_hints_reload): Handle
new arrays.
If HarfBuzz is enabled, the reverse character map generation now considers
GSUB entries when looking for glyphs that correspond to a code point.
* src/autofit/afadjust.c (af_all_glyph_variants_helper,
af_all_glyph_variants) [FT_CONFIG_OPTION_USE_HARFBUZZ]: New functions.
(af_reverse_character_map_new) [FT_CONFIG_OPTION_USE_HARFBUZZ]: Call new
code.
With 64-bit platforms widely available, it is more efficient to use
64-bit variables readily. It results in noticeable 10% improvement
in glyph loading speed.
* src/truetype/ttinterp.c (TT_MulFix14, TT_DotFix14) [FT_INT64]:
Prioritize available implementation with arguments adjusted based on
the use cases.
Resolves inconsistencies in 64-bit multiplication discussed in !355.
Importantly, FT_MulFix arguments and return value is FT_Long,
whatever sizeof FT_Long is on 64-bit platforms: 8 bytes on Linux or
4 bytes on Windows.
* include/freetype/internal/ftcalc.h (FT_MulFix_x86_64): Removed.
(FT_MulFix_64): Generalize and prioritize the inline implementation
for all 64-bit platforms ifdef FT_INT64.
* src/base/ftcalc.c (FT_MulFix)[FT_INT64]: Call 'FT_MulFix_64'.
* src/base/ftbase.c: Include 'ftcalc.c' after the FT_MulFix callers
to enable its inlining.
Resolves inconsistencies in 64-bit multiplication discussed in !355. Importantly, FT_MulFix arguments and return value is FT_Long, whatever sizeof FT_Long is on 64-bit platforms: 8 bytes on Linux or 4 bytes on Windows. * include/freetype/internal/ftcalc.h (FT_MulFix_x86_64): Removed. (FT_MulFix_64): Generalize and prioritize the inline implementation
for all 64-bit platforms ifdef FT_INT64. * src/base/ftcalc.c (FT_MulFix)[FT_INT64]: Call 'FT_MulFix_64'. * src/base/ftbase.c: Include 'ftcalc.c' after the FT_MulFix callers to enable its inlining.
Before, we were loading a palette (again and again) even if the
same was requested. Even if the font only had one palette...
For a font like NotoColorEmoji that has over 5000 colors in its
palette, this was dominating the COLRv1 loading times for HarfBuzz
(and I believe all other clients) because they have to set the
palette to get access to the colors.
* src/base/ftcolor.c (FT_Palette_Select): Check the current palette.
* src/bdf/bdflib.c (bdf_parse_start_): Reject fonts with initial
COMMENTs.
(bdf_parse_properties_): Skip COMMENTs so that...
(bdf_add_property_): Do not make exception for COMMENT.
(bdf_parse_glyphs_, bdf_add_comments): Updated.
* src/bdf/bdflib.c (bdf_parse_start_, bdf_add_property_): Delay handling
of the default char until...
* src/bdf/bdfdrivr.c (BDF_Face_Init): ... handles all other properties.
* src/bdf/bdf.h (bdf_font_t): Remove `monowidth`.
* src/bdf/bdflib.c (bdf_parse_start_, bdf_add_property_): Delay handling
of the font spacing until...
* src/bdf/bdfdrivr.c (BDF_Face_Init): ... handles all other properties.
* src/bdf/bdflib.c (bdf_parse_start_, bdf_add_property_): Delay handling
of the font ascent and descent until...
* src/bdf/bdfdrivr.c (BDF_Face_Init): ... handles all other properties.
Instead of cumbersome field list mamangement, we will tokenize input
using custom `bdf_strtok_`.
* src/bdf/bdflib.c (bdf_list_t_, bdf_list_init_, bdf_list_ensure_,
bdf_list_shift_, bdf_list_join_, bdf_list_split_,
bdf_set_default_spacing_): Removed.
(bdf_strtok_): New function which NUL-terminates the first token at
the delimiter position and returns the next token that follows
consequtive delimiters.
(bdf_parse_*_, bdf_load_font): Updated.
* docs/CHANGES: Claim overall 75% performance improvement.
* src/bdf/bdf.h (bdf_options_t): Removed.
(BDF_KEEP_COMMENTS, BDF_KEEP_UNENCODED, BDF_CORRECT_METRICS): Updated
to avoid collisions with the other parsing flags.
* src/bdf/bdfdrivr.c (BDF_Face_Init): Use default flags explicitly.
* src/bdf/bdflib.c (bdf_load_font): Use flags as an argument to
initialize the parser.
(bdf_set_fedault_spacing_): Default to BDF_PROPORTIONAL explicitly.
(bdf_parse_*_): Updated.
