kc3-lang/harfbuzz

2023-06-02T18:32:09

[subset] Optimize hmtx/vmtx serialization. Make serializer allocation up front to avoid bounds checking overhead for each metric. Benchmarks: BM_subset/subset_glyphs/Mplus1p-Regular.ttf/retaingids/10_median -0.1005 -0.1005 0 0 0 0 BM_subset/subset_glyphs/Mplus1p-Regular.ttf/retaingids/64_median -0.0693 -0.0692 0 0 0 0 BM_subset/subset_glyphs/Mplus1p-Regular.ttf/retaingids/512_median -0.0294 -0.0293 1 1 1 1 BM_subset/subset_glyphs/Mplus1p-Regular.ttf/retaingids/4096_median -0.0033 -0.0032 3 3 3 3 BM_subset/subset_glyphs/Mplus1p-Regular.ttf/retaingids/10000_median +0.0170 +0.0171 7 7 7 7