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[layout] Try to speed up collect_lookups some more 

Barely made a dent :(.
This commit is contained in:
Behdad Esfahbod 2018-10-25 22:25:29 -07:00
parent eb44bfc864
commit e98af6d1ed
2 changed files with 6 additions and 19 deletions
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2
src/hb-ot-layout-common.hh
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@ -555,6 +555,8 @@ struct Feature
unsigned int *lookup_count /* IN/OUT */,
unsigned int *lookup_tags /* OUT */) const
{ return lookupIndex.get_indexes (start_index, lookup_count, lookup_tags); }
inline void add_lookup_indexes_to (hb_set_t *lookup_indexes) const
{ lookupIndex.add_indexes_to (lookup_indexes); }
inline const FeatureParams &get_feature_params (void) const
{ return this+featureParams; }

23
src/hb-ot-layout.cc
View File

@ -828,29 +828,14 @@ hb_ot_layout_collect_lookups (hb_face_t *face,
const hb_tag_t *features,
hb_set_t *lookup_indexes /* OUT */)
{
const OT::GSUBGPOS &g = get_gsubgpos_table (face, table_tag);
hb_auto_t<hb_set_t> feature_indexes;
hb_ot_layout_collect_features (face, table_tag, scripts, languages, features, &feature_indexes);
for (hb_codepoint_t feature_index = HB_SET_VALUE_INVALID;
hb_set_next (&feature_indexes, &feature_index);)
{
unsigned int lookup_indices[32];
unsigned int offset, len;
offset = 0;
do {
len = ARRAY_LENGTH (lookup_indices);
hb_ot_layout_feature_get_lookups (face,
table_tag,
feature_index,
offset, &len,
lookup_indices);
for (unsigned int i = 0; i < len; i++)
lookup_indexes->add (lookup_indices[i]);
offset += len;
} while (len == ARRAY_LENGTH (lookup_indices));
}
g.get_feature (feature_index).add_lookup_indexes_to (lookup_indexes);
}
/**