diff options
Diffstat (limited to 'src/3rdparty/harfbuzz-ng/src/OT/Layout/GPOS/PairPosFormat2.hh')
| -rw-r--r-- | src/3rdparty/harfbuzz-ng/src/OT/Layout/GPOS/PairPosFormat2.hh | 92 |
1 files changed, 53 insertions, 39 deletions
diff --git a/src/3rdparty/harfbuzz-ng/src/OT/Layout/GPOS/PairPosFormat2.hh b/src/3rdparty/harfbuzz-ng/src/OT/Layout/GPOS/PairPosFormat2.hh index de15a29e3c..9c805b39a1 100644 --- a/src/3rdparty/harfbuzz-ng/src/OT/Layout/GPOS/PairPosFormat2.hh +++ b/src/3rdparty/harfbuzz-ng/src/OT/Layout/GPOS/PairPosFormat2.hh @@ -8,7 +8,7 @@ namespace Layout { namespace GPOS_impl { template <typename Types> -struct PairPosFormat2_4 +struct PairPosFormat2_4 : ValueBase { protected: HBUINT16 format; /* Format identifier--format = 2 */ @@ -50,13 +50,13 @@ struct PairPosFormat2_4 unsigned int len1 = valueFormat1.get_len (); unsigned int len2 = valueFormat2.get_len (); unsigned int stride = HBUINT16::static_size * (len1 + len2); - unsigned int record_size = valueFormat1.get_size () + valueFormat2.get_size (); unsigned int count = (unsigned int) class1Count * (unsigned int) class2Count; return_trace (c->check_range ((const void *) values, count, - record_size) && - valueFormat1.sanitize_values_stride_unsafe (c, this, &values[0], count, stride) && - valueFormat2.sanitize_values_stride_unsafe (c, this, &values[len1], count, stride)); + stride) && + (c->lazy_some_gpos || + (valueFormat1.sanitize_values_stride_unsafe (c, this, &values[0], count, stride) && + valueFormat2.sanitize_values_stride_unsafe (c, this, &values[len1], count, stride)))); } bool intersects (const hb_set_t *glyphs) const @@ -131,40 +131,46 @@ struct PairPosFormat2_4 if (likely (index == NOT_COVERED)) return_trace (false); hb_ot_apply_context_t::skipping_iterator_t &skippy_iter = c->iter_input; - skippy_iter.reset (buffer->idx, 1); + skippy_iter.reset_fast (buffer->idx); unsigned unsafe_to; - if (!skippy_iter.next (&unsafe_to)) + if (unlikely (!skippy_iter.next (&unsafe_to))) { buffer->unsafe_to_concat (buffer->idx, unsafe_to); return_trace (false); } - unsigned int len1 = valueFormat1.get_len (); - unsigned int len2 = valueFormat2.get_len (); - unsigned int record_len = len1 + len2; + unsigned int klass2 = (this+classDef2).get_class (buffer->info[skippy_iter.idx].codepoint); + if (!klass2) + { + buffer->unsafe_to_concat (buffer->idx, skippy_iter.idx + 1); + return_trace (false); + } unsigned int klass1 = (this+classDef1).get_class (buffer->cur().codepoint); - unsigned int klass2 = (this+classDef2).get_class (buffer->info[skippy_iter.idx].codepoint); if (unlikely (klass1 >= class1Count || klass2 >= class2Count)) { buffer->unsafe_to_concat (buffer->idx, skippy_iter.idx + 1); return_trace (false); } + unsigned int len1 = valueFormat1.get_len (); + unsigned int len2 = valueFormat2.get_len (); + unsigned int record_len = len1 + len2; + const Value *v = &values[record_len * (klass1 * class2Count + klass2)]; bool applied_first = false, applied_second = false; /* Isolate simple kerning and apply it half to each side. - * Results in better cursor positinoing / underline drawing. + * Results in better cursor positioning / underline drawing. * * Disabled, because causes issues... :-( * https://github.com/harfbuzz/harfbuzz/issues/3408 * https://github.com/harfbuzz/harfbuzz/pull/3235#issuecomment-1029814978 */ #ifndef HB_SPLIT_KERN - if (0) + if (false) #endif { if (!len2) @@ -224,8 +230,8 @@ struct PairPosFormat2_4 c->buffer->idx, skippy_iter.idx); } - applied_first = valueFormat1.apply_value (c, this, v, buffer->cur_pos()); - applied_second = valueFormat2.apply_value (c, this, v + len1, buffer->pos[skippy_iter.idx]); + applied_first = len1 && valueFormat1.apply_value (c, this, v, buffer->cur_pos()); + applied_second = len2 && valueFormat2.apply_value (c, this, v + len1, buffer->pos[skippy_iter.idx]); if (applied_first || applied_second) if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ()) @@ -281,44 +287,52 @@ struct PairPosFormat2_4 unsigned len2 = valueFormat2.get_len (); hb_pair_t<unsigned, unsigned> newFormats = hb_pair (valueFormat1, valueFormat2); - if (c->plan->flags & HB_SUBSET_FLAGS_NO_HINTING) - newFormats = compute_effective_value_formats (klass1_map, klass2_map); - - out->valueFormat1 = newFormats.first; - out->valueFormat2 = newFormats.second; - if (c->plan->all_axes_pinned) + if (c->plan->normalized_coords) + { + /* in case of full instancing, all var device flags will be dropped so no + * need to strip hints here */ + newFormats = compute_effective_value_formats (klass1_map, klass2_map, false, false, &c->plan->layout_variation_idx_delta_map); + } + /* do not strip hints for VF */ + else if (c->plan->flags & HB_SUBSET_FLAGS_NO_HINTING) { - out->valueFormat1 = out->valueFormat1.drop_device_table_flags (); - out->valueFormat2 = out->valueFormat2.drop_device_table_flags (); + hb_blob_t* blob = hb_face_reference_table (c->plan->source, HB_TAG ('f','v','a','r')); + bool has_fvar = (blob != hb_blob_get_empty ()); + hb_blob_destroy (blob); + + bool strip = !has_fvar; + /* special case: strip hints when a VF has no GDEF varstore after + * subsetting*/ + if (has_fvar && !c->plan->has_gdef_varstore) + strip = true; + newFormats = compute_effective_value_formats (klass1_map, klass2_map, strip, true); } + out->valueFormat1 = newFormats.first; + out->valueFormat2 = newFormats.second; + + unsigned total_len = len1 + len2; + hb_vector_t<unsigned> class2_idxs (+ hb_range ((unsigned) class2Count) | hb_filter (klass2_map)); for (unsigned class1_idx : + hb_range ((unsigned) class1Count) | hb_filter (klass1_map)) { - for (unsigned class2_idx : + hb_range ((unsigned) class2Count) | hb_filter (klass2_map)) + for (unsigned class2_idx : class2_idxs) { - unsigned idx = (class1_idx * (unsigned) class2Count + class2_idx) * (len1 + len2); + unsigned idx = (class1_idx * (unsigned) class2Count + class2_idx) * total_len; valueFormat1.copy_values (c->serializer, out->valueFormat1, this, &values[idx], &c->plan->layout_variation_idx_delta_map); valueFormat2.copy_values (c->serializer, out->valueFormat2, this, &values[idx + len1], &c->plan->layout_variation_idx_delta_map); } } - const hb_set_t &glyphset = *c->plan->glyphset_gsub (); - const hb_map_t &glyph_map = *c->plan->glyph_map; - - auto it = - + hb_iter (this+coverage) - | hb_filter (glyphset) - | hb_map_retains_sorting (glyph_map) - ; - - out->coverage.serialize_serialize (c->serializer, it); - return_trace (out->class1Count && out->class2Count && bool (it)); + bool ret = out->coverage.serialize_subset(c, coverage, this); + return_trace (out->class1Count && out->class2Count && ret); } hb_pair_t<unsigned, unsigned> compute_effective_value_formats (const hb_map_t& klass1_map, - const hb_map_t& klass2_map) const + const hb_map_t& klass2_map, + bool strip_hints, bool strip_empty, + const hb_hashmap_t<unsigned, hb_pair_t<unsigned, int>> *varidx_delta_map = nullptr) const { unsigned len1 = valueFormat1.get_len (); unsigned len2 = valueFormat2.get_len (); @@ -332,8 +346,8 @@ struct PairPosFormat2_4 for (unsigned class2_idx : + hb_range ((unsigned) class2Count) | hb_filter (klass2_map)) { unsigned idx = (class1_idx * (unsigned) class2Count + class2_idx) * record_size; - format1 = format1 | valueFormat1.get_effective_format (&values[idx]); - format2 = format2 | valueFormat2.get_effective_format (&values[idx + len1]); + format1 = format1 | valueFormat1.get_effective_format (&values[idx], strip_hints, strip_empty, this, varidx_delta_map); + format2 = format2 | valueFormat2.get_effective_format (&values[idx + len1], strip_hints, strip_empty, this, varidx_delta_map); } if (format1 == valueFormat1 && format2 == valueFormat2) |