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[subset-cff] Optimize encode_subrs 

Don't loop over all original subrs. Just walk over closure subrs.
This commit is contained in:
Behdad Esfahbod 2022-12-02 13:58:36 -07:00
parent 0ad5977cd6
commit 043eeb29a3
1 changed files with 6 additions and 7 deletions
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13
src/hb-subset-cff-common.hh
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@ -735,14 +735,13 @@ struct subr_subsetter_t
if (unlikely (!buffArray.resize (count))) if (unlikely (!buffArray.resize (count)))
return false; return false;
for (unsigned int old_num = 0; old_num < subrs.length; old_num++) for (unsigned int new_num = 0; new_num < count; new_num++)
{ {
hb_codepoint_t new_num = remap[old_num]; hb_codepoint_t old_num = remap.backward (new_num);
if (new_num != CFF_UNDEF_CODE) assert (old_num != CFF_UNDEF_CODE);
{
if (unlikely (!encode_str (subrs[old_num], fd, buffArray[new_num]))) if (unlikely (!encode_str (subrs[old_num], fd, buffArray[new_num])))
return false; return false;
}
} }
return true; return true;
} }