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Code Issues 9 Releases Wiki Activity

[truetype] Reduce Infinality footprint (cont'd). 

* src/truetype/ttinterp.c (Ins_DELTAP): Shrink variable scope.
(Ins_SHPIX, Ins_MIRP): Revise if-logic.
This commit is contained in:
Alexei Podtelezhnikov 2020-09-02 15:48:03 -04:00
parent 51a5e3389c
commit 600d59e343
2 changed files with 79 additions and 101 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2020-09-02 Alexei Podtelezhnikov <apodtele@gmail.com>
[truetype] Reduce Infinality footprint (cont'd).
* src/truetype/ttinterp.c (Ins_DELTAP): Shrink variable scope.
(Ins_SHPIX, Ins_MIRP): Revise if-logic.
2020-09-02 Alexei Podtelezhnikov <apodtele@gmail.com>
[truetype] Reduce Infinality footprint.

173
src/truetype/ttinterp.c
View File

@ -5756,8 +5756,12 @@
}
else
#ifdef TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY
if ( SUBPIXEL_HINTING_INFINALITY )
if ( SUBPIXEL_HINTING_INFINALITY &&
exc->ignore_x_mode )
{
FT_Int B1, B2;
/* If not using ignore_x_mode rendering, allow ZP2 move. */
/* If inline deltas aren't allowed, skip ZP2 move. */
/* If using ignore_x_mode rendering, allow ZP2 point move if: */
@ -5766,75 +5770,57 @@
/* - the glyph is specifically set to allow SHPIX moves */
/* - the move is on a previously Y-touched point */
if ( exc->ignore_x_mode )
/* save point for later comparison */
B1 = exc->zp2.cur[point].y;
if ( exc->face->sph_compatibility_mode )
{
FT_Int B1, B2;
if ( exc->sph_tweak_flags & SPH_TWEAK_ROUND_NONPIXEL_Y_MOVES )
dy = FT_PIX_ROUND( B1 + dy ) - B1;
/* skip post-iup deltas */
if ( exc->iup_called &&
( ( exc->sph_in_func_flags & SPH_FDEF_INLINE_DELTA_1 ) ||
( exc->sph_in_func_flags & SPH_FDEF_INLINE_DELTA_2 ) ) )
goto Skip;
/* save point for later comparison */
if ( !( exc->sph_tweak_flags & SPH_TWEAK_ALWAYS_SKIP_DELTAP ) &&
( ( exc->is_composite && exc->GS.freeVector.y != 0 ) ||
( exc->zp2.tags[point] & FT_CURVE_TAG_TOUCH_Y ) ||
( exc->sph_tweak_flags & SPH_TWEAK_DO_SHPIX ) ) )
Move_Zp2_Point( exc, point, 0, dy, TRUE );
/* save new point */
if ( exc->GS.freeVector.y != 0 )
B1 = exc->zp2.cur[point].y;
else
B1 = exc->zp2.cur[point].x;
if ( !exc->face->sph_compatibility_mode &&
exc->GS.freeVector.y != 0 )
{
Move_Zp2_Point( exc, point, dx, dy, TRUE );
B2 = exc->zp2.cur[point].y;
/* save new point */
if ( exc->GS.freeVector.y != 0 )
{
B2 = exc->zp2.cur[point].y;
/* reverse any disallowed moves */
if ( ( exc->sph_tweak_flags & SPH_TWEAK_SKIP_NONPIXEL_Y_MOVES ) &&
( B1 & 63 ) != 0 &&
( B2 & 63 ) != 0 &&
B1 != B2 )
Move_Zp2_Point( exc,
point,
NEG_LONG( dx ),
NEG_LONG( dy ),
TRUE );
}
/* reverse any disallowed moves */
if ( ( B1 & 63 ) == 0 &&
( B2 & 63 ) != 0 &&
B1 != B2 )
Move_Zp2_Point( exc, point, 0, NEG_LONG( dy ), TRUE );
}
else if ( exc->face->sph_compatibility_mode )
{
if ( exc->sph_tweak_flags & SPH_TWEAK_ROUND_NONPIXEL_Y_MOVES )
{
dx = FT_PIX_ROUND( B1 + dx ) - B1;
dy = FT_PIX_ROUND( B1 + dy ) - B1;
}
/* skip post-iup deltas */
if ( exc->iup_called &&
( ( exc->sph_in_func_flags & SPH_FDEF_INLINE_DELTA_1 ) ||
( exc->sph_in_func_flags & SPH_FDEF_INLINE_DELTA_2 ) ) )
goto Skip;
if ( !( exc->sph_tweak_flags & SPH_TWEAK_ALWAYS_SKIP_DELTAP ) &&
( ( exc->is_composite && exc->GS.freeVector.y != 0 ) ||
( exc->zp2.tags[point] & FT_CURVE_TAG_TOUCH_Y ) ||
( exc->sph_tweak_flags & SPH_TWEAK_DO_SHPIX ) ) )
Move_Zp2_Point( exc, point, 0, dy, TRUE );
/* save new point */
if ( exc->GS.freeVector.y != 0 )
{
B2 = exc->zp2.cur[point].y;
/* reverse any disallowed moves */
if ( ( B1 & 63 ) == 0 &&
( B2 & 63 ) != 0 &&
B1 != B2 )
Move_Zp2_Point( exc, point, 0, NEG_LONG( dy ), TRUE );
}
}
else if ( exc->sph_in_func_flags & SPH_FDEF_TYPEMAN_DIAGENDCTRL )
Move_Zp2_Point( exc, point, dx, dy, TRUE );
}
else
else if ( exc->GS.freeVector.y != 0 )
{
Move_Zp2_Point( exc, point, dx, dy, TRUE );
/* save new point */
B2 = exc->zp2.cur[point].y;
/* reverse any disallowed moves */
if ( ( exc->sph_tweak_flags & SPH_TWEAK_SKIP_NONPIXEL_Y_MOVES ) &&
( B1 & 63 ) != 0 &&
( B2 & 63 ) != 0 &&
B1 != B2 )
Move_Zp2_Point( exc,
point,
NEG_LONG( dx ),
NEG_LONG( dy ),
TRUE );
}
else if ( exc->sph_in_func_flags & SPH_FDEF_TYPEMAN_DIAGENDCTRL )
Move_Zp2_Point( exc, point, dx, dy, TRUE );
}
else
@ -6317,19 +6303,6 @@
cvt_dist = NEG_LONG( cvt_dist );
}
#ifdef TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY
if ( SUBPIXEL_HINTING_INFINALITY &&
exc->ignore_x_mode &&
exc->GS.freeVector.y != 0 &&
( exc->sph_tweak_flags & SPH_TWEAK_TIMES_NEW_ROMAN_HACK ) )
{
if ( cur_dist < -64 )
cvt_dist -= 16;
else if ( cur_dist > 64 && cur_dist < 84 )
cvt_dist += 32;
}
#endif /* TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY */
/* control value cut-in and round */
if ( ( exc->opcode & 4 ) != 0 )
@ -6380,6 +6353,15 @@
!( exc->sph_tweak_flags & SPH_TWEAK_NORMAL_ROUND ) )
control_value_cutin = 0;
if ( exc->GS.freeVector.y != 0 &&
( exc->sph_tweak_flags & SPH_TWEAK_TIMES_NEW_ROMAN_HACK ) )
{
if ( cur_dist < -64 )
cvt_dist -= 16;
else if ( cur_dist > 64 && cur_dist < 84 )
cvt_dist += 32;
}
delta = SUB_LONG( cvt_dist, org_dist );
if ( delta < 0 )
delta = NEG_LONG( delta );
@ -6420,23 +6402,20 @@
}
#ifdef TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY
if ( SUBPIXEL_HINTING_INFINALITY )
if ( SUBPIXEL_HINTING_INFINALITY &&
exc->ignore_x_mode &&
exc->GS.freeVector.y != 0 )
{
FT_Int B1, B2;
FT_Bool reverse_move = FALSE;
B1 = exc->zp1.cur[point].y;
/* Round moves if necessary */
if ( exc->ignore_x_mode &&
exc->GS.freeVector.y != 0 &&
( exc->sph_tweak_flags & SPH_TWEAK_ROUND_NONPIXEL_Y_MOVES ) )
if ( exc->sph_tweak_flags & SPH_TWEAK_ROUND_NONPIXEL_Y_MOVES )
distance = FT_PIX_ROUND( B1 + distance - cur_dist ) - B1 + cur_dist;
if ( exc->ignore_x_mode &&
exc->GS.freeVector.y != 0 &&
( exc->opcode & 16 ) == 0 &&
if ( ( exc->opcode & 16 ) == 0 &&
( exc->opcode & 8 ) == 0 &&
( exc->sph_tweak_flags & SPH_TWEAK_COURIER_NEW_2_HACK ) )
distance += 64;
@ -6449,22 +6428,12 @@
B2 = exc->zp1.cur[point].y;
/* Reverse move if necessary */
if ( exc->ignore_x_mode )
{
if ( exc->face->sph_compatibility_mode &&
exc->GS.freeVector.y != 0 &&
if ( ( exc->face->sph_compatibility_mode &&
( B1 & 63 ) == 0 &&
( B2 & 63 ) != 0 )
reverse_move = TRUE;
if ( ( exc->sph_tweak_flags & SPH_TWEAK_SKIP_NONPIXEL_Y_MOVES ) &&
exc->GS.freeVector.y != 0 &&
( B2 & 63 ) != 0 &&
( B1 & 63 ) != 0 )
reverse_move = TRUE;
}
if ( reverse_move )
( B2 & 63 ) != 0 ) ||
( ( exc->sph_tweak_flags & SPH_TWEAK_SKIP_NONPIXEL_Y_MOVES ) &&
( B1 & 63 ) != 0 &&
( B2 & 63 ) != 0 ) )
exc->func_move( exc,
&exc->zp1,
point,
@ -7150,10 +7119,9 @@
FT_UShort A;
FT_ULong C, P;
FT_Long B;
#ifdef TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY
FT_UShort B1, B2;
if ( SUBPIXEL_HINTING_INFINALITY &&
exc->ignore_x_mode &&
exc->iup_called &&
@ -7234,6 +7202,9 @@
/* rules, always skipping deltas in subpixel direction. */
else if ( exc->ignore_x_mode && exc->GS.freeVector.y != 0 )
{
FT_UShort B1, B2;
/* save the y value of the point now; compare after move */
B1 = (FT_UShort)exc->zp0.cur[A].y;