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[ot-font] Allow 24bit glyphs in advance cache

This commit is contained in:
Behdad Esfahbod 2022-08-03 13:22:51 -06:00
parent 99070a734a
commit d7adc55e18
3 changed files with 8 additions and 10 deletions
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6
src/hb-cache.hh
View File

@ -82,11 +82,5 @@ struct hb_cache_t
item_t values[1u<<cache_bits];
};
template <bool thread_safe = true>
using hb_cmap_cache_t = hb_cache_t<21, 16, 8, thread_safe>;
template <bool thread_safe = true>
using hb_advance_cache_t = hb_cache_t<16, 24, 8, thread_safe>;
#endif /* HB_CACHE_HH */

4
src/hb-ft.cc
View File

@ -80,6 +80,8 @@
*/
using hb_ft_advance_cache_t = hb_cache_t<16, 24, 8, false>;
struct hb_ft_font_t
{
int load_flags;
@ -89,7 +91,7 @@ struct hb_ft_font_t
mutable hb_mutex_t lock;
FT_Face ft_face;
mutable unsigned cached_serial;
mutable hb_advance_cache_t<false> advance_cache;
mutable hb_ft_advance_cache_t advance_cache;
};
static hb_ft_font_t *

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

@ -59,13 +59,15 @@
* never need to call these functions directly.
**/
using hb_ot_font_advance_cache_t = hb_cache_t<24, 16, 8, true>;
struct hb_ot_font_t
{
const hb_ot_face_t *ot_face;
/* h_advance caching */
mutable hb_atomic_int_t cached_coords_serial;
mutable hb_atomic_ptr_t<hb_advance_cache_t<>> advance_cache;
mutable hb_atomic_ptr_t<hb_ot_font_advance_cache_t> advance_cache;
};
static hb_ot_font_t *
@ -161,14 +163,14 @@ hb_ot_get_glyph_h_advances (hb_font_t* font, void* font_data,
bool use_cache = false;
#endif
hb_advance_cache_t<> *cache = nullptr;
hb_ot_font_advance_cache_t *cache = nullptr;
if (use_cache)
{
retry:
cache = ot_font->advance_cache.get_acquire ();
if (unlikely (!cache))
{
cache = (hb_advance_cache_t<> *) hb_malloc (sizeof (hb_advance_cache_t<>));
cache = (hb_ot_font_advance_cache_t *) hb_malloc (sizeof (hb_ot_font_advance_cache_t));
if (unlikely (!cache))
{
use_cache = false;