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Correctly round bearing values while computing pcm

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* src/sfntfont.c (sfntfont_measure_instructed_pcm)
(sfntfont_measure_pcm): Ceil rbearing value.
This commit is contained in:
Po Lu 2023-02-08 17:04:42 +08:00
parent 1a70941c8e
commit ad3def330c
1 changed files with 2 additions and 3 deletions
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5
src/sfntfont.c
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@ -2277,9 +2277,8 @@ sfntfont_measure_instructed_pcm (struct sfnt_font_info *font, sfnt_glyph glyph,
/* Scale the metrics by the interpreter's scale. */
sfnt_scale_metrics (&metrics, font->interpreter->scale);
/* How to round lbearing and rbearing? */
pcm->lbearing = metrics.lbearing >> 16;
pcm->rbearing = outline->xmax >> 16;
pcm->rbearing = SFNT_CEIL_FIXED (outline->xmax) >> 16;
/* Round the advance, ascent and descent upwards. */
pcm->width = SFNT_CEIL_FIXED (metrics.advance) >> 16;
@ -2324,7 +2323,7 @@ sfntfont_measure_pcm (struct sfnt_font_info *font, sfnt_glyph glyph,
/* How to round lbearing and rbearing? */
pcm->lbearing = metrics.lbearing >> 16;
pcm->rbearing = outline->xmax >> 16;
pcm->rbearing = SFNT_CEIL_FIXED (outline->xmax) >> 16;
/* Round the advance, ascent and descent upwards. */
pcm->width = SFNT_CEIL_FIXED (metrics.advance) >> 16;