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[gvar] Optimize scalar = 1.0 case

This commit is contained in:
Behdad Esfahbod 2022-11-22 11:53:35 -07:00
parent 2d098d5d7f
commit bb3bb76450
1 changed files with 18 additions and 8 deletions
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10
src/hb-ot-var-gvar-table.hh
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@ -609,6 +609,7 @@ struct gvar
hb_memset (deltas.arrayZ, 0, deltas.length * sizeof (deltas.arrayZ[0]));
if (scalar != 1.0f)
for (unsigned int i = 0; i < num_deltas; i++)
{
unsigned int pt_index = apply_to_all ? i : indices[i];
@ -617,6 +618,15 @@ struct gvar
deltas.arrayZ[pt_index].x += x_deltas.arrayZ[i] * scalar;
deltas.arrayZ[pt_index].y += y_deltas.arrayZ[i] * scalar;
}
else
for (unsigned int i = 0; i < num_deltas; i++)
{
unsigned int pt_index = apply_to_all ? i : indices[i];
if (unlikely (pt_index >= deltas.length)) continue;
deltas.arrayZ[pt_index].flag = 1; /* this point is referenced, i.e., explicit deltas specified */
deltas.arrayZ[pt_index].x += x_deltas.arrayZ[i];
deltas.arrayZ[pt_index].y += y_deltas.arrayZ[i];
}
/* infer deltas for unreferenced points */
unsigned start_point = 0;