walkero
/
harfbuzz
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

[ft] Discard advance cache if font changed 

Uses newly added font serial API.

Part of https://github.com/harfbuzz/harfbuzz/issues/2270

But doesn't set new coords on the FT_Face. That's a lot more
work :(.
This commit is contained in:
Behdad Esfahbod 2022-05-20 12:06:22 -06:00
parent 48db1c9583
commit 8629df188a
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
src/hb-ft.cc
View File

@ -86,7 +86,7 @@ struct hb_ft_font_t
mutable hb_mutex_t lock;
FT_Face ft_face;
mutable int cached_x_scale;
mutable unsigned long cached_serial;
mutable hb_advance_cache_t advance_cache;
};
@ -103,7 +103,7 @@ _hb_ft_font_create (FT_Face ft_face, bool symbol, bool unref)
ft_font->load_flags = FT_LOAD_DEFAULT | FT_LOAD_NO_HINTING;
ft_font->cached_x_scale = 0;
ft_font->cached_serial = (unsigned long) -1;
ft_font->advance_cache.init ();
return ft_font;
@ -337,10 +337,10 @@ hb_ft_get_glyph_h_advances (hb_font_t* font, void* font_data,
int load_flags = ft_font->load_flags;
int mult = font->x_scale < 0 ? -1 : +1;
if (font->x_scale != ft_font->cached_x_scale)
if (font->serial != ft_font->cached_serial)
{
ft_font->advance_cache.clear ();
ft_font->cached_x_scale = font->x_scale;
ft_font->cached_serial = font->serial;
}
for (unsigned int i = 0; i < count; i++)