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Rendering considerations.

This commit is contained in:
Alexei Podtelezhnikov 2019-06-12 21:58:35 -04:00
parent d1b16325e2
commit bdac4cbe6f
1 changed files with 5 additions and 0 deletions
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5
src/smooth/ftgrays.c
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@ -646,6 +646,9 @@ typedef ptrdiff_t FT_PtrDist;
dx = -dx;
}
/* the fractional part of y-delta is mod/dx. It is essential to */
/* keep track of its accumulation for accurate rendering. */
/* XXX: y-delta and x-delta below should be related. */
FT_DIV_MOD( TCoord, p, dx, delta, mod );
ras.area += (TArea)( ( fx1 + first ) * delta );
@ -783,6 +786,8 @@ typedef ptrdiff_t FT_PtrDist;
dy = -dy;
}
/* the fractional part of x-delta is mod/dy. It is essential to */
/* keep track of its accumulation for accurate rendering. */
FT_DIV_MOD( TCoord, p, dy, delta, mod );
x = ras.x + delta;