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[subset-cff] Always compact charstrings 

Reduces non-preprocessed subsetting memory footprint significantly.
This commit is contained in:
Behdad Esfahbod 2023-01-02 10:38:30 -07:00
parent d3ed6eed43
commit 4f013c42f0
1 changed files with 12 additions and 7 deletions
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19
src/hb-subset-cff-common.hh
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@ -678,16 +678,21 @@ struct subr_subsetter_t
} }
/* Doing this here one by one instead of compacting all at the en /* Doing this here one by one instead of compacting all at the en
* has massive peak-memory saving. */ * has massive peak-memory saving.
if (plan->inprogress_accelerator) *
* The compacting both saves memory and makes further operations
* faster.
*/
//if (plan->inprogress_accelerator)
compact_string (parsed_charstrings[i]); compact_string (parsed_charstrings[i]);
} }
// Since parsed strings were loaded from accelerator, we still need /* Since parsed strings were loaded from accelerator, we still need
// to compute the subroutine closures which would have normally happened during * to compute the subroutine closures which would have normally happened during
// parsing. * parsing.
// *
// Or if we are dropping hinting, redo closure to get actually used subrs. * Or if we are dropping hinting, redo closure to get actually used subrs.
*/
if ((cff_accelerator || if ((cff_accelerator ||
(!cff_accelerator && plan->flags & HB_SUBSET_FLAGS_NO_HINTING)) && (!cff_accelerator && plan->flags & HB_SUBSET_FLAGS_NO_HINTING)) &&
!closure_subroutines(*parsed_global_subrs, !closure_subroutines(*parsed_global_subrs,