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[aat] Speed up deleted-glyph removal

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This commit is contained in:
Behdad Esfahbod 2025-03-12 23:36:09 -06:00
parent aa233ecedc
commit 43d421d388
2 changed files with 8 additions and 1 deletions
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6
src/hb-aat-layout-common.hh
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@ -52,6 +52,8 @@ static_assert (sizeof (hb_aat_class_cache_t) == 256, "");
enum { DELETED_GLYPH = 0xFFFF };
#define HB_BUFFER_SCRATCH_FLAG_AAT_HAS_DELETED HB_BUFFER_SCRATCH_FLAG_SHAPER0
struct hb_aat_apply_context_t :
hb_dispatch_context_t<hb_aat_apply_context_t, bool, HB_DEBUG_APPLY>
{
@ -120,7 +122,10 @@ struct hb_aat_apply_context_t :
for (unsigned int i = 0; i < count; i++)
{
if (glyphs[i] == DELETED_GLYPH)
{
buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_AAT_HAS_DELETED;
_hb_glyph_info_set_aat_deleted (&buffer->cur());
}
else
{
#ifndef HB_NO_OT_LAYOUT
@ -150,6 +155,7 @@ struct hb_aat_apply_context_t :
HB_NODISCARD bool delete_glyph ()
{
buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_AAT_HAS_DELETED;
_hb_glyph_info_set_aat_deleted (&buffer->cur());
return buffer->replace_glyph (DELETED_GLYPH);
}

3
src/hb-aat-layout.cc
View file

@ -330,7 +330,8 @@ is_deleted_glyph (const hb_glyph_info_t *info)
void
hb_aat_layout_remove_deleted_glyphs (hb_buffer_t *buffer)
{
buffer->delete_glyphs_inplace (is_deleted_glyph);
if (buffer->scratch_flags & HB_BUFFER_SCRATCH_FLAG_AAT_HAS_DELETED)
buffer->delete_glyphs_inplace (is_deleted_glyph);
}
/**