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[truetype] Speed up variation IUP. 

* src/truetype/ttgxvar.c (tt_delta_interpolate): Separate trivial
snapping to the same position from true interpolation.
This commit is contained in:
Alexei Podtelezhnikov 2018-10-31 23:17:33 -04:00
parent ba03310b5a
commit 1e4496c54c
2 changed files with 25 additions and 3 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2018-10-31 Alexei Podtelezhnikov <apodtele@gmail.com>
[truetype] Speed up variation IUP.
* src/truetype/ttgxvar.c (tt_delta_interpolate): Separate trivial
snapping to the same position from true interpolation.
2018-10-31 Alexei Podtelezhnikov <apodtele@gmail.com>
* src/type1/t1load.c (t1_set_mm_blend): Optimized.

21
src/truetype/ttgxvar.c
View File

@ -3516,10 +3516,25 @@
/* If the reference points have the same coordinate but different */
/* delta, inferred delta is zero. Otherwise interpolate. */
if ( in1 != in2 || out1 == out2 )
if ( in1 == in2 || out1 == out2 )
{
FT_Fixed scale = in1 != in2 ? FT_DivFix( out2 - out1, in2 - in1 )
: 0;
for ( p = p1; p <= p2; p++ )
{
out = in_points[p].x;
if ( out <= in1 )
out += d1;
else if ( out >= in2 )
out += d2;
else
out = out1;
out_points[p].x = out;
}
}
else
{
FT_Fixed scale = FT_DivFix( out2 - out1, in2 - in1 );
for ( p = p1; p <= p2; p++ )