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[GPOS] Cache VarStore region scalars

This commit is contained in:
Behdad Esfahbod 2022-05-20 16:06:05 -06:00
parent 5fbc70c59b
commit f2a2fb91a3
3 changed files with 20 additions and 7 deletions
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2
src/hb-ot-layout-common.hh
View File

@ -3010,7 +3010,9 @@ struct VariationStore
protected:
HBUINT16 format;
public:
Offset32To<VarRegionList> regions;
protected:
Array16OfOffset32To<VarData> dataSets;
public:
DEFINE_SIZE_ARRAY_SIZED (8, dataSets);

13
src/hb-ot-layout-gpos-table.hh
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@ -146,23 +146,24 @@ struct ValueFormat : HBUINT16
if (!use_x_device && !use_y_device) return ret;
const VariationStore &store = c->var_store;
auto *cache = &c->regions_cache;
/* pixel -> fractional pixel */
if (format & xPlaDevice) {
if (use_x_device) glyph_pos.x_offset += (base + get_device (values, &ret)).get_x_delta (font, store);
if (use_x_device) glyph_pos.x_offset += (base + get_device (values, &ret)).get_x_delta (font, store, cache);
values++;
}
if (format & yPlaDevice) {
if (use_y_device) glyph_pos.y_offset += (base + get_device (values, &ret)).get_y_delta (font, store);
if (use_y_device) glyph_pos.y_offset += (base + get_device (values, &ret)).get_y_delta (font, store, cache);
values++;
}
if (format & xAdvDevice) {
if (horizontal && use_x_device) glyph_pos.x_advance += (base + get_device (values, &ret)).get_x_delta (font, store);
if (horizontal && use_x_device) glyph_pos.x_advance += (base + get_device (values, &ret)).get_x_delta (font, store, cache);
values++;
}
if (format & yAdvDevice) {
/* y_advance values grow downward but font-space grows upward, hence negation */
if (!horizontal && use_y_device) glyph_pos.y_advance -= (base + get_device (values, &ret)).get_y_delta (font, store);
if (!horizontal && use_y_device) glyph_pos.y_advance -= (base + get_device (values, &ret)).get_y_delta (font, store, cache);
values++;
}
return ret;
@ -465,9 +466,9 @@ struct AnchorFormat3
*y = font->em_fscale_y (yCoordinate);
if (font->x_ppem || font->num_coords)
*x += (this+xDeviceTable).get_x_delta (font, c->var_store);
*x += (this+xDeviceTable).get_x_delta (font, c->var_store, &c->regions_cache);
if (font->y_ppem || font->num_coords)
*y += (this+yDeviceTable).get_y_delta (font, c->var_store);
*y += (this+yDeviceTable).get_y_delta (font, c->var_store, &c->regions_cache);
}
bool sanitize (hb_sanitize_context_t *c) const

12
src/hb-ot-layout-gsubgpos.hh
View File

@ -627,6 +627,7 @@ struct hb_ot_apply_context_t :
recurse_func_t recurse_func;
const GDEF &gdef;
const VariationStore &var_store;
hb_vector_t<float> regions_cache;
hb_direction_t direction;
hb_mask_t lookup_mask;
@ -669,7 +670,16 @@ struct hb_ot_apply_context_t :
auto_zwj (true),
per_syllable (false),
random (false),
random_state (1) { init_iters (); }
random_state (1)
{
init_iters ();
if (table_index == 1 && font->num_coords) /* GPOS */
{
regions_cache.resize ((&var_store+var_store.regions).regionCount);
for (auto &f : regions_cache.writer ())
f = NAN;
}
}
void init_iters ()
{