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| author | Po Lu <luangruo@yahoo.com> | 2023-12-18 11:10:40 +0800 |
|---|---|---|
| committer | Po Lu <luangruo@yahoo.com> | 2023-12-18 11:10:40 +0800 |
| commit | 103f36cced37eed1bb51cd704b0a64b42f7b8144 (patch) | |
| tree | 78a4e477432cfedd53f007ceb95823c93f4b8079 /src/sfntfont.c | |
| parent | 678a594f4f3ddd24a46253d77237580fe4db9fc1 (diff) | |
| download | emacs-103f36cced37eed1bb51cd704b0a64b42f7b8144.tar.gz | |
Enable the new font scaler
* src/sfnt.c (sfnt_curve_is_flat): Tighten threshold for flat
curves.
(sfnt_insert_raster_step): Rewrite loop for clarity.
(sfnt_poly_set_steps): New function; fill small spans with a
plain unexceptional loop rather than memset.
(sfnt_poly_steps): Call that function.
(sfnt_verbose, main): Adjust tests such that the scaler can be
selected at runtime.
* src/sfnt.h: Update prototypes.
* src/sfntfont.c (sfntfont_get_glyph_raster)
(syms_of_sfntfont) <sfnt_raster_glyphs_exactly>: New variable.
Diffstat (limited to 'src/sfntfont.c')
| -rw-r--r-- | src/sfntfont.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/src/sfntfont.c b/src/sfntfont.c index f002712dc10..0a8797bfb3b 100644 --- a/src/sfntfont.c +++ b/src/sfntfont.c @@ -2444,7 +2444,11 @@ sfntfont_get_glyph_raster (sfnt_glyph glyph_code, } /* Not already cached. Raster the outline. */ - raster = sfnt_raster_glyph_outline (outline); + + if (!sfnt_raster_glyphs_exactly) + raster = sfnt_raster_glyph_outline (outline); + else + raster = sfnt_raster_glyph_outline_exact (outline); if (!raster) return NULL; @@ -4116,6 +4120,13 @@ eliminating artifacts and chance effects consequent upon the direct upscaling of glyph outline data. Instruction code is occasionally incompatible with Emacs and must be disregarded. */); Vsfnt_uninstructable_family_regexp = Qnil; + + DEFVAR_BOOL ("sfnt-raster-glyphs-exactly", sfnt_raster_glyphs_exactly, + doc: /* How font glyph outlines should be converted to graphics. +If non-nil, glyphs will be displayed in a more precise manner, at the +cost of performance on devices where floating-point math operations +are slow. */); + sfnt_raster_glyphs_exactly = true; } void |