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[config] Add HB_NO_OT_FONT_ADVANCE_CACHE

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Part of https://github.com/harfbuzz/harfbuzz/issues/4220
This commit is contained in:
Behdad Esfahbod 2023-05-05 07:07:00 -06:00
parent 8831ba7f55
commit 7e676cb4cf
2 changed files with 5 additions and 4 deletions
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1
src/hb-config.hh
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@ -190,6 +190,7 @@
#ifdef HB_MINIMIZE_MEMORY_USAGE
#define HB_NO_GDEF_CACHE
#define HB_NO_OT_LAYOUT_LOOKUP_CACHE
#define HB_NO_OT_FONT_ADVANCE_CACHE
#define HB_NO_OT_FONT_CMAP_CACHE
#endif

8
src/hb-ot-font.cc
View file

@ -204,7 +204,7 @@ hb_ot_get_glyph_h_advances (hb_font_t* font, void* font_data,
hb_position_t *orig_first_advance = first_advance;
#ifndef HB_NO_VAR
#if !defined(HB_NO_VAR) && !defined(HB_NO_OT_FONT_ADVANCE_CACHE)
const OT::HVAR &HVAR = *hmtx.var_table;
const OT::VariationStore &varStore = &HVAR + HVAR.varStore;
OT::VariationStore::cache_t *varStore_cache = font->num_coords * count >= 128 ? varStore.create_cache () : nullptr;
@ -274,7 +274,7 @@ hb_ot_get_glyph_h_advances (hb_font_t* font, void* font_data,
}
}
#ifndef HB_NO_VAR
#if !defined(HB_NO_VAR) && !defined(HB_NO_OT_FONT_ADVANCE_CACHE)
OT::VariationStore::destroy_cache (varStore_cache);
#endif
@ -309,7 +309,7 @@ hb_ot_get_glyph_v_advances (hb_font_t* font, void* font_data,
if (vmtx.has_data ())
{
#ifndef HB_NO_VAR
#if !defined(HB_NO_VAR) && !defined(HB_NO_OT_FONT_ADVANCE_CACHE)
const OT::VVAR &VVAR = *vmtx.var_table;
const OT::VariationStore &varStore = &VVAR + VVAR.varStore;
OT::VariationStore::cache_t *varStore_cache = font->num_coords ? varStore.create_cache () : nullptr;
@ -324,7 +324,7 @@ hb_ot_get_glyph_v_advances (hb_font_t* font, void* font_data,
first_advance = &StructAtOffsetUnaligned<hb_position_t> (first_advance, advance_stride);
}
#ifndef HB_NO_VAR
#if !defined(HB_NO_VAR) && !defined(HB_NO_OT_FONT_ADVANCE_CACHE)
OT::VariationStore::destroy_cache (varStore_cache);
#endif
}