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last (tiny) fix to the bytecode interpreter and code cleanup

This commit is contained in:
David Turner 2007-03-26 12:03:04 +00:00
parent 86a3ee7613
commit 3b242d3619
2 changed files with 5 additions and 130 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2007-03-26 David Turner <david@freetype.org>
* src/truetype/ttinterp.c: last fix for the MD instruction bytecode and
remove the FIX_BYTECODE macros from the sources. Woot, this looks good.
2007-03-26 suzuki toshiya <mpsuzuki@hiroshima-u.ac.jp>
* builds/unix/ftconfig.in: disable Carbon framework dependency on

130
src/truetype/ttinterp.c
View File

@ -16,11 +16,6 @@
/***************************************************************************/
/* define FIX_BYTECODE to implement the bytecode interpreter fixes */
/* needed to match Windows behaviour more accurately */
#define FIX_BYTECODE
#include <ft2build.h>
#include FT_INTERNAL_DEBUG_H
#include FT_INTERNAL_CALC_H
@ -4831,34 +4826,7 @@
if ( CUR.opcode & 1 )
D = CUR_Func_project( CUR.zp0.cur + L, CUR.zp1.cur + K );
else
{
#ifdef FIX_BYTECODE
FT_Vector vec1;
if ( CUR.GS.gep0 == 0 || CUR.GS.gep1 == 0 )
{
vec1.x = CUR.zp0.org[L].x - CUR.zp1.org[K].x;
vec1.y = CUR.zp0.org[L].y - CUR.zp1.org[K].y;
}
else
{
/* get scaled orus coordinates */
vec1.x = TT_MULFIX( CUR.zp0.orus[L].x - CUR.zp1.orus[K].x,
CUR.metrics.x_scale );
vec1.y = TT_MULFIX( CUR.zp0.orus[L].y - CUR.zp1.orus[K].y,
CUR.metrics.y_scale );
}
D = CUR_fast_dualproj( &vec1 );
#else
D = CUR_Func_dualproj( CUR.zp0.org + L, CUR.zp1.org + K );
#endif /* FIX_BYTECODE */
}
}
args[0] = D;
@ -5780,8 +5748,6 @@
/* XXX: Is there some undocumented feature while in the */
/* twilight zone? */
#ifdef FIX_BYTECODE
/* XXX: UNDOCUMENTED: twilight zone special case */
if ( CUR.GS.gep0 == 0 || CUR.GS.gep1 == 0 )
@ -5816,13 +5782,6 @@
}
}
#else
org_dist = CUR_Func_dualproj( CUR.zp1.org + point,
CUR.zp0.org + CUR.GS.rp0 );
#endif /* FIX_BYTECODE */
/* single width cut-in test */
if ( FT_ABS( org_dist - CUR.GS.single_width_value ) <
@ -6174,8 +6133,6 @@
/* SOMETIMES, DUMBER CODE IS BETTER CODE */
#ifdef FIX_BYTECODE
static void
Ins_IP( INS_ARG )
{
@ -6262,93 +6219,6 @@
CUR.new_top = CUR.args;
}
#else /* !FIX_BYTECODE */
static void
Ins_IP( INS_ARG )
{
FT_F26Dot6 org_a, org_b, org_x,
cur_a, cur_b, cur_x,
distance = 0;
FT_UShort point;
FT_UNUSED_ARG;
if ( CUR.top < CUR.GS.loop )
{
CUR.error = TT_Err_Invalid_Reference;
return;
}
/* XXX: There are some glyphs in some braindead but popular */
/* fonts out there (e.g. [aeu]grave in monotype.ttf) */
/* calling IP[] with bad values of rp[12]. */
/* Do something sane when this odd thing happens. */
if ( BOUNDS( CUR.GS.rp1, CUR.zp0.n_points ) ||
BOUNDS( CUR.GS.rp2, CUR.zp1.n_points ) )
{
org_a = cur_a = 0;
org_b = cur_b = 0;
}
else
{
org_a = CUR_fast_dualproj( &CUR.zp0.org[CUR.GS.rp1] );
org_b = CUR_fast_dualproj( &CUR.zp1.org[CUR.GS.rp2] );
cur_a = CUR_fast_project( &CUR.zp0.cur[CUR.GS.rp1] );
cur_b = CUR_fast_project( &CUR.zp1.cur[CUR.GS.rp2] );
}
while ( CUR.GS.loop > 0 )
{
CUR.args--;
point = (FT_UShort)CUR.stack[CUR.args];
if ( BOUNDS( point, CUR.zp2.n_points ) )
{
if ( CUR.pedantic_hinting )
{
CUR.error = TT_Err_Invalid_Reference;
return;
}
}
else
{
org_x = CUR_fast_dualproj( &CUR.zp2.org[point] );
cur_x = CUR_fast_project ( &CUR.zp2.cur[point] );
if ( ( org_a <= org_b && org_x <= org_a ) ||
( org_a > org_b && org_x >= org_a ) )
distance = ( cur_a - org_a ) + ( org_x - cur_x );
else if ( ( org_a <= org_b && org_x >= org_b ) ||
( org_a > org_b && org_x < org_b ) )
distance = ( cur_b - org_b ) + ( org_x - cur_x );
else if ( org_b != org_a )
/* note: it seems that rounding this value isn't a good */
/* idea (cf. width of capital `S' in Times) */
distance = TT_MULDIV( cur_b - cur_a,
org_x - org_a,
org_b - org_a ) + ( cur_a - cur_x );
CUR_Func_move( &CUR.zp2, point, distance );
}
CUR.GS.loop--;
}
CUR.GS.loop = 1;
CUR.new_top = CUR.args;
}
#endif /* !FIX_BYTECODE */
/*************************************************************************/
/* */