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[coretext-font] Do early-return in get_nominal_glyphs()

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Related to https://github.com/harfbuzz/harfbuzz/issues/5056
This commit is contained in:
Behdad Esfahbod 2025-02-09 03:52:13 +00:00
parent c5e6c885c1
commit f6bf9f697e
1 changed files with 10 additions and 1 deletions
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11
src/hb-coretext-font.cc
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@ -136,7 +136,16 @@ hb_coretext_get_nominal_glyphs (hb_font_t *font HB_UNUSED,
ch[j] = *first_unicode;
first_unicode = &StructAtOffset<const hb_codepoint_t> (first_unicode, unicode_stride);
}
CTFontGetGlyphsForCharacters (ct_font, ch, cg_glyph, c);
if (unlikely (!CTFontGetGlyphsForCharacters (ct_font, ch, cg_glyph, c)))
{
// Use slow path partially and return at first failure.
for (unsigned j = 0; j < c; j++)
{
if (!hb_coretext_get_nominal_glyph (font, font_data, ch[j], first_glyph, nullptr))
return i + j;
first_glyph = &StructAtOffset<hb_codepoint_t> (first_glyph, glyph_stride);
}
}
for (unsigned j = 0; j < c; j++)
{
*first_glyph = cg_glyph[j];