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[VarComposite] Micro-optimize get_num_points

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Behdad Esfahbod 2023-04-28 10:45:23 -06:00
parent 29d576584d
commit b0e763f5eb
1 changed files with 8 additions and 0 deletions
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8
src/OT/glyf/VarCompositeGlyph.hh
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@ -86,6 +86,14 @@ struct VarCompositeGlyphRecord
unsigned fl = flags;
unsigned num = 0;
if (fl & AXES_HAVE_VARIATION) num += numAxes;
/* Hopefully faster code. */
fl = (((fl & (HAVE_TRANSLATE_Y | HAVE_SCALE_Y | HAVE_SKEW_Y | HAVE_TCENTER_Y)) >> 1) | fl) &
(HAVE_TRANSLATE_X | HAVE_ROTATION | HAVE_SCALE_X | HAVE_SKEW_X | HAVE_TCENTER_X);
num += hb_popcount (fl);
return num;
/* Slower but more readable code. */
if (fl & (HAVE_TRANSLATE_X | HAVE_TRANSLATE_Y)) num++;
if (fl & HAVE_ROTATION) num++;
if (fl & (HAVE_SCALE_X | HAVE_SCALE_Y)) num++;