organicmaps/freetype
13
Fork 0
Code Issues Pull requests Projects Releases Wiki Activity Actions

[truetype] Round phantom points after instructions.

Browse source 
According to specifications, phantom points might be instructed to
fit them to grid. Then rounding them before instructions might
interfere. Other points are not touched before instructions
either.

* src/truetype/ttgload.c (TT_Hint_Glyph): Delay phantom point
rounding until after instructions are applied.
This commit is contained in:
Alexei Podtelezhnikov 2023-03-07 17:35:15 +00:00
parent d5c6b948ac
commit 839905475e
1 changed files with 10 additions and 14 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

24
src/truetype/ttgload.c
View file

@ -864,19 +864,6 @@
loader->exec->metrics.x_scale = loader->size->metrics->x_scale;
loader->exec->metrics.y_scale = loader->size->metrics->y_scale;
}
#endif
/* round phantom points */
zone->cur[zone->n_points - 4].x =
FT_PIX_ROUND( zone->cur[zone->n_points - 4].x );
zone->cur[zone->n_points - 3].x =
FT_PIX_ROUND( zone->cur[zone->n_points - 3].x );
zone->cur[zone->n_points - 2].y =
FT_PIX_ROUND( zone->cur[zone->n_points - 2].y );
zone->cur[zone->n_points - 1].y =
FT_PIX_ROUND( zone->cur[zone->n_points - 1].y );
#ifdef TT_USE_BYTECODE_INTERPRETER
if ( n_ins > 0 )
{
@ -900,8 +887,17 @@
current_outline.tags[0] |=
( loader->exec->GS.scan_type << 5 ) | FT_CURVE_TAG_HAS_SCANMODE;
}
#endif /* TT_USE_BYTECODE_INTERPRETER */
#endif
/* round phantom points */
zone->cur[zone->n_points - 4].x =
FT_PIX_ROUND( zone->cur[zone->n_points - 4].x );
zone->cur[zone->n_points - 3].x =
FT_PIX_ROUND( zone->cur[zone->n_points - 3].x );
zone->cur[zone->n_points - 2].y =
FT_PIX_ROUND( zone->cur[zone->n_points - 2].y );
zone->cur[zone->n_points - 1].y =
FT_PIX_ROUND( zone->cur[zone->n_points - 1].y );
#ifdef TT_SUPPORT_SUBPIXEL_HINTING_MINIMAL
/* Save possibly modified glyph phantom points unless in v40 backward */