summaryrefslogtreecommitdiffstats
path: root/src/3rdparty/freetype/src/raster/ftraster.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/3rdparty/freetype/src/raster/ftraster.c')
-rw-r--r--src/3rdparty/freetype/src/raster/ftraster.c737
1 files changed, 146 insertions, 591 deletions
diff --git a/src/3rdparty/freetype/src/raster/ftraster.c b/src/3rdparty/freetype/src/raster/ftraster.c
index b06ac333da..e4bab98728 100644
--- a/src/3rdparty/freetype/src/raster/ftraster.c
+++ b/src/3rdparty/freetype/src/raster/ftraster.c
@@ -4,7 +4,7 @@
/* */
/* The FreeType glyph rasterizer (body). */
/* */
-/* Copyright 1996-2003, 2005, 2007-2014 by */
+/* Copyright 1996-2015 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@@ -24,8 +24,8 @@
/* */
/* - copy `src/raster/ftraster.c' (this file) to your current directory */
/* */
- /* - copy `include/ftimage.h' and `src/raster/ftmisc.h' to your current */
- /* directory */
+ /* - copy `include/freetype/ftimage.h' and `src/raster/ftmisc.h' to your */
+ /* current directory */
/* */
/* - compile `ftraster' with the _STANDALONE_ macro defined, as in */
/* */
@@ -49,6 +49,10 @@
#ifdef _STANDALONE_
+ /* The size in bytes of the render pool used by the scan-line converter */
+ /* to do all of its work. */
+#define FT_RENDER_POOL_SIZE 16384L
+
#define FT_CONFIG_STANDARD_LIBRARY_H <stdlib.h>
#include <string.h> /* for memset */
@@ -150,14 +154,6 @@
/* define DEBUG_RASTER if you want to compile a debugging version */
/* #define DEBUG_RASTER */
- /* define FT_RASTER_OPTION_ANTI_ALIASING if you want to support */
- /* 5-levels anti-aliasing */
-/* #define FT_RASTER_OPTION_ANTI_ALIASING */
-
- /* The size of the two-lines intermediate bitmap used */
- /* for anti-aliasing, in bytes. */
-#define RASTER_GRAY_LINES 2048
-
/*************************************************************************/
/*************************************************************************/
@@ -183,6 +179,8 @@
#define FT_ERR_XCAT( x, y ) x ## y
#define FT_ERR_CAT( x, y ) FT_ERR_XCAT( x, y )
+#define FT_MAX( a, b ) ( (a) > (b) ? (a) : (b) )
+
/* This macro is used to indicate that a function parameter is unused. */
/* Its purpose is simply to reduce compiler warnings. Note also that */
/* simply defining it as `(void)x' doesn't avoid warnings with certain */
@@ -199,6 +197,7 @@
#define FT_TRACE( x ) do { } while ( 0 ) /* nothing */
#define FT_TRACE1( x ) do { } while ( 0 ) /* nothing */
#define FT_TRACE6( x ) do { } while ( 0 ) /* nothing */
+#define FT_TRACE7( x ) do { } while ( 0 ) /* nothing */
#endif
#ifndef FT_THROW
@@ -318,7 +317,7 @@
typedef union Alignment_
{
- long l;
+ Long l;
void* p;
void (*f)(void);
@@ -334,9 +333,9 @@
/* values for the `flags' bit field */
-#define Flow_Up 0x8
-#define Overshoot_Top 0x10
-#define Overshoot_Bottom 0x20
+#define Flow_Up 0x08U
+#define Overshoot_Top 0x10U
+#define Overshoot_Bottom 0x20U
/* States of each line, arc, and profile */
@@ -358,14 +357,14 @@
FT_F26Dot6 X; /* current coordinate during sweep */
PProfile link; /* link to next profile (various purposes) */
PLong offset; /* start of profile's data in render pool */
- unsigned flags; /* Bit 0-2: drop-out mode */
+ UShort flags; /* Bit 0-2: drop-out mode */
/* Bit 3: profile orientation (up/down) */
/* Bit 4: is top profile? */
/* Bit 5: is bottom profile? */
- long height; /* profile's height in scanlines */
- long start; /* profile's starting scanline */
+ Long height; /* profile's height in scanlines */
+ Long start; /* profile's starting scanline */
- unsigned countL; /* number of lines to step before this */
+ Int countL; /* number of lines to step before this */
/* profile becomes drawable */
PProfile next; /* next profile in same contour, used */
@@ -387,7 +386,7 @@
#define AlignProfileSize \
- ( ( sizeof ( TProfile ) + sizeof ( Alignment ) - 1 ) / sizeof ( long ) )
+ ( ( sizeof ( TProfile ) + sizeof ( Alignment ) - 1 ) / sizeof ( Long ) )
#undef RAS_ARG
@@ -451,7 +450,9 @@
#define CEILING( x ) ( ( (x) + ras.precision - 1 ) & -ras.precision )
#define TRUNC( x ) ( (Long)(x) >> ras.precision_bits )
#define FRAC( x ) ( (x) & ( ras.precision - 1 ) )
-#define SCALED( x ) ( ( (ULong)(x) << ras.scale_shift ) - ras.precision_half )
+#define SCALED( x ) ( ( (x) < 0 ? -( -(x) << ras.scale_shift ) \
+ : ( (x) << ras.scale_shift ) ) \
+ - ras.precision_half )
#define IS_BOTTOM_OVERSHOOT( x ) \
(Bool)( CEILING( x ) - x >= ras.precision_half )
@@ -514,9 +515,6 @@
Short traceIncr; /* sweep's increment in target bitmap */
- Short gray_min_x; /* current min x during gray rendering */
- Short gray_max_x; /* current max x during gray rendering */
-
/* dispatch variables */
Function_Sweep_Init* Proc_Sweep_Init;
@@ -529,45 +527,19 @@
Bool second_pass; /* indicates whether a horizontal pass */
/* should be performed to control */
/* drop-out accurately when calling */
- /* Render_Glyph. Note that there is */
- /* no horizontal pass during gray */
- /* rendering. */
+ /* Render_Glyph. */
TPoint arcs[3 * MaxBezier + 1]; /* The Bezier stack */
black_TBand band_stack[16]; /* band stack used for sub-banding */
Int band_top; /* band stack top */
-#ifdef FT_RASTER_OPTION_ANTI_ALIASING
-
- Byte* grays;
-
- Byte gray_lines[RASTER_GRAY_LINES];
- /* Intermediate table used to render the */
- /* graylevels pixmaps. */
- /* gray_lines is a buffer holding two */
- /* monochrome scanlines */
-
- Short gray_width; /* width in bytes of one monochrome */
- /* intermediate scanline of gray_lines. */
- /* Each gray pixel takes 2 bits long there */
-
- /* The gray_lines must hold 2 lines, thus with size */
- /* in bytes of at least `gray_width*2'. */
-
-#endif /* FT_RASTER_ANTI_ALIASING */
-
};
typedef struct black_TRaster_
{
- char* buffer;
- long buffer_size;
void* memory;
- black_PWorker worker;
- Byte grays[5];
- Short gray_width;
} black_TRaster, *black_PRaster;
@@ -583,70 +555,6 @@
#endif /* !FT_STATIC_RASTER */
-#ifdef FT_RASTER_OPTION_ANTI_ALIASING
-
- /* A lookup table used to quickly count set bits in four gray 2x2 */
- /* cells. The values of the table have been produced with the */
- /* following code: */
- /* */
- /* for ( i = 0; i < 256; i++ ) */
- /* { */
- /* l = 0; */
- /* j = i; */
- /* */
- /* for ( c = 0; c < 4; c++ ) */
- /* { */
- /* l <<= 4; */
- /* */
- /* if ( j & 0x80 ) l++; */
- /* if ( j & 0x40 ) l++; */
- /* */
- /* j = ( j << 2 ) & 0xFF; */
- /* } */
- /* printf( "0x%04X", l ); */
- /* } */
- /* */
-
- static const short count_table[256] =
- {
- 0x0000, 0x0001, 0x0001, 0x0002, 0x0010, 0x0011, 0x0011, 0x0012,
- 0x0010, 0x0011, 0x0011, 0x0012, 0x0020, 0x0021, 0x0021, 0x0022,
- 0x0100, 0x0101, 0x0101, 0x0102, 0x0110, 0x0111, 0x0111, 0x0112,
- 0x0110, 0x0111, 0x0111, 0x0112, 0x0120, 0x0121, 0x0121, 0x0122,
- 0x0100, 0x0101, 0x0101, 0x0102, 0x0110, 0x0111, 0x0111, 0x0112,
- 0x0110, 0x0111, 0x0111, 0x0112, 0x0120, 0x0121, 0x0121, 0x0122,
- 0x0200, 0x0201, 0x0201, 0x0202, 0x0210, 0x0211, 0x0211, 0x0212,
- 0x0210, 0x0211, 0x0211, 0x0212, 0x0220, 0x0221, 0x0221, 0x0222,
- 0x1000, 0x1001, 0x1001, 0x1002, 0x1010, 0x1011, 0x1011, 0x1012,
- 0x1010, 0x1011, 0x1011, 0x1012, 0x1020, 0x1021, 0x1021, 0x1022,
- 0x1100, 0x1101, 0x1101, 0x1102, 0x1110, 0x1111, 0x1111, 0x1112,
- 0x1110, 0x1111, 0x1111, 0x1112, 0x1120, 0x1121, 0x1121, 0x1122,
- 0x1100, 0x1101, 0x1101, 0x1102, 0x1110, 0x1111, 0x1111, 0x1112,
- 0x1110, 0x1111, 0x1111, 0x1112, 0x1120, 0x1121, 0x1121, 0x1122,
- 0x1200, 0x1201, 0x1201, 0x1202, 0x1210, 0x1211, 0x1211, 0x1212,
- 0x1210, 0x1211, 0x1211, 0x1212, 0x1220, 0x1221, 0x1221, 0x1222,
- 0x1000, 0x1001, 0x1001, 0x1002, 0x1010, 0x1011, 0x1011, 0x1012,
- 0x1010, 0x1011, 0x1011, 0x1012, 0x1020, 0x1021, 0x1021, 0x1022,
- 0x1100, 0x1101, 0x1101, 0x1102, 0x1110, 0x1111, 0x1111, 0x1112,
- 0x1110, 0x1111, 0x1111, 0x1112, 0x1120, 0x1121, 0x1121, 0x1122,
- 0x1100, 0x1101, 0x1101, 0x1102, 0x1110, 0x1111, 0x1111, 0x1112,
- 0x1110, 0x1111, 0x1111, 0x1112, 0x1120, 0x1121, 0x1121, 0x1122,
- 0x1200, 0x1201, 0x1201, 0x1202, 0x1210, 0x1211, 0x1211, 0x1212,
- 0x1210, 0x1211, 0x1211, 0x1212, 0x1220, 0x1221, 0x1221, 0x1222,
- 0x2000, 0x2001, 0x2001, 0x2002, 0x2010, 0x2011, 0x2011, 0x2012,
- 0x2010, 0x2011, 0x2011, 0x2012, 0x2020, 0x2021, 0x2021, 0x2022,
- 0x2100, 0x2101, 0x2101, 0x2102, 0x2110, 0x2111, 0x2111, 0x2112,
- 0x2110, 0x2111, 0x2111, 0x2112, 0x2120, 0x2121, 0x2121, 0x2122,
- 0x2100, 0x2101, 0x2101, 0x2102, 0x2110, 0x2111, 0x2111, 0x2112,
- 0x2110, 0x2111, 0x2111, 0x2112, 0x2120, 0x2121, 0x2121, 0x2122,
- 0x2200, 0x2201, 0x2201, 0x2202, 0x2210, 0x2211, 0x2211, 0x2212,
- 0x2210, 0x2211, 0x2211, 0x2212, 0x2220, 0x2221, 0x2221, 0x2222
- };
-
-#endif /* FT_RASTER_OPTION_ANTI_ALIASING */
-
-
-
/*************************************************************************/
/*************************************************************************/
/** **/
@@ -677,11 +585,11 @@
* approximating it as a straight segment. The default value of 32 (for
* low accuracy) corresponds to
*
- * 32 / 64 == 0.5 pixels ,
+ * 32 / 64 == 0.5 pixels,
*
* while for the high accuracy case we have
*
- * 256/ (1 << 12) = 0.0625 pixels .
+ * 256 / (1 << 12) = 0.0625 pixels.
*
* `precision_jitter' is an epsilon threshold used in
* `Vertical_Sweep_Span' to deal with small imperfections in the Bezier
@@ -764,13 +672,13 @@
if ( overshoot )
ras.cProfile->flags |= Overshoot_Bottom;
- FT_TRACE6(( "New ascending profile = %p\n", ras.cProfile ));
+ FT_TRACE6(( " new ascending profile = %p\n", ras.cProfile ));
break;
case Descending_State:
if ( overshoot )
ras.cProfile->flags |= Overshoot_Top;
- FT_TRACE6(( "New descending profile = %p\n", ras.cProfile ));
+ FT_TRACE6(( " new descending profile = %p\n", ras.cProfile ));
break;
default:
@@ -825,7 +733,7 @@
PProfile oldProfile;
- FT_TRACE6(( "Ending profile %p, start = %ld, height = %ld\n",
+ FT_TRACE6(( " ending profile %p, start = %ld, height = %ld\n",
ras.cProfile, ras.cProfile->start, h ));
ras.cProfile->height = h;
@@ -893,15 +801,14 @@
/* if it is <, simply insert it, ignore if == */
if ( n >= 0 && y > y_turns[n] )
- while ( n >= 0 )
+ do
{
Int y2 = (Int)y_turns[n];
y_turns[n] = y;
y = y2;
- n--;
- }
+ } while ( --n >= 0 );
if ( n < 0 )
{
@@ -942,7 +849,7 @@
if ( n > 1 && p )
{
- while ( n > 0 )
+ do
{
Int bottom, top;
@@ -970,8 +877,7 @@
return FAILURE;
p = p->link;
- n--;
- }
+ } while ( --n );
}
else
ras.fProfile = NULL;
@@ -1342,7 +1248,7 @@
start_arc = arc;
- while ( arc >= start_arc && e <= e2 )
+ do
{
ras.joint = FALSE;
@@ -1375,7 +1281,7 @@
}
arc -= degree;
}
- }
+ } while ( arc >= start_arc && e <= e2 );
Fin:
ras.top = top;
@@ -1813,7 +1719,7 @@
static Bool
Decompose_Curve( RAS_ARGS UShort first,
UShort last,
- int flipped )
+ Int flipped )
{
FT_Vector v_last;
FT_Vector v_control;
@@ -1824,7 +1730,7 @@
FT_Vector* limit;
char* tags;
- unsigned tag; /* current point's state */
+ UInt tag; /* current point's state */
points = ras.outline.points;
@@ -2035,10 +1941,10 @@
/* rendering. */
/* */
static Bool
- Convert_Glyph( RAS_ARGS int flipped )
+ Convert_Glyph( RAS_ARGS Int flipped )
{
- int i;
- unsigned start;
+ Int i;
+ UInt start;
ras.fProfile = NULL;
@@ -2064,12 +1970,12 @@
ras.state = Unknown_State;
ras.gProfile = NULL;
- if ( Decompose_Curve( RAS_VARS (unsigned short)start,
- ras.outline.contours[i],
+ if ( Decompose_Curve( RAS_VARS (UShort)start,
+ (UShort)ras.outline.contours[i],
flipped ) )
return FAILURE;
- start = ras.outline.contours[i] + 1;
+ start = (UShort)ras.outline.contours[i] + 1;
/* we must now check whether the extreme arcs join or not */
if ( FRAC( ras.lastY ) == 0 &&
@@ -2083,7 +1989,8 @@
/* to be drawn. */
lastProfile = ras.cProfile;
- if ( ras.cProfile->flags & Flow_Up )
+ if ( ras.top != ras.cProfile->offset &&
+ ( ras.cProfile->flags & Flow_Up ) )
o = IS_TOP_OVERSHOOT( ras.lastY );
else
o = IS_BOTTOM_OVERSHOOT( ras.lastY );
@@ -2207,7 +2114,7 @@
while ( current )
{
current->X = *current->offset;
- current->offset += current->flags & Flow_Up ? 1 : -1;
+ current->offset += ( current->flags & Flow_Up ) ? 1 : -1;
current->height--;
current = current->link;
}
@@ -2267,10 +2174,7 @@
ras.traceIncr = (Short)-pitch;
ras.traceOfs = -*min * pitch;
if ( pitch > 0 )
- ras.traceOfs += ( ras.target.rows - 1 ) * pitch;
-
- ras.gray_min_x = 0;
- ras.gray_max_x = 0;
+ ras.traceOfs += (Long)( ras.target.rows - 1 ) * pitch;
}
@@ -2291,6 +2195,14 @@
FT_UNUSED( right );
+ /* in high-precision mode, we need 12 digits after the comma to */
+ /* represent multiples of 1/(1<<12) = 1/4096 */
+ FT_TRACE7(( " y=%d x=[%.12f;%.12f], drop-out=%d",
+ y,
+ x1 / (double)ras.precision,
+ x2 / (double)ras.precision,
+ dropOutControl ));
+
/* Drop-out control */
e1 = TRUNC( CEILING( x1 ) );
@@ -2303,7 +2215,7 @@
if ( e2 >= 0 && e1 < ras.bWidth )
{
- int c1, c2;
+ Int c1, c2;
Byte f1, f2;
@@ -2312,17 +2224,14 @@
if ( e2 >= ras.bWidth )
e2 = ras.bWidth - 1;
+ FT_TRACE7(( " -> x=[%d;%d]", e1, e2 ));
+
c1 = (Short)( e1 >> 3 );
c2 = (Short)( e2 >> 3 );
f1 = (Byte) ( 0xFF >> ( e1 & 7 ) );
f2 = (Byte) ~( 0x7F >> ( e2 & 7 ) );
- if ( ras.gray_min_x > c1 )
- ras.gray_min_x = (short)c1;
- if ( ras.gray_max_x < c2 )
- ras.gray_max_x = (short)c2;
-
target = ras.bTarget + ras.traceOfs + c1;
c2 -= c1;
@@ -2344,6 +2253,8 @@
else
*target |= ( f1 & f2 );
}
+
+ FT_TRACE7(( "\n" ));
}
@@ -2358,6 +2269,11 @@
Short c1, f1;
+ FT_TRACE7(( " y=%d x=[%.12f;%.12f]",
+ y,
+ x1 / (double)ras.precision,
+ x2 / (double)ras.precision ));
+
/* Drop-out control */
/* e2 x2 x1 e1 */
@@ -2390,6 +2306,8 @@
Int dropOutControl = left->flags & 7;
+ FT_TRACE7(( ", drop-out=%d", dropOutControl ));
+
if ( e1 == e2 + ras.precision )
{
switch ( dropOutControl )
@@ -2436,14 +2354,14 @@
left->height <= 0 &&
!( left->flags & Overshoot_Top &&
x2 - x1 >= ras.precision_half ) )
- return;
+ goto Exit;
/* lower stub test */
if ( right->next == left &&
left->start == y &&
!( left->flags & Overshoot_Bottom &&
x2 - x1 >= ras.precision_half ) )
- return;
+ goto Exit;
if ( dropOutControl == 1 )
pxl = e2;
@@ -2452,7 +2370,7 @@
break;
default: /* modes 2, 3, 6, 7 */
- return; /* no drop-out control */
+ goto Exit; /* no drop-out control */
}
/* undocumented but confirmed: If the drop-out would result in a */
@@ -2473,26 +2391,26 @@
if ( e1 >= 0 && e1 < ras.bWidth &&
ras.bTarget[ras.traceOfs + c1] & ( 0x80 >> f1 ) )
- return;
+ goto Exit;
}
else
- return;
+ goto Exit;
}
e1 = TRUNC( pxl );
if ( e1 >= 0 && e1 < ras.bWidth )
{
+ FT_TRACE7(( " -> x=%d (drop-out)", e1 ));
+
c1 = (Short)( e1 >> 3 );
f1 = (Short)( e1 & 7 );
- if ( ras.gray_min_x > c1 )
- ras.gray_min_x = c1;
- if ( ras.gray_max_x < c1 )
- ras.gray_max_x = c1;
-
ras.bTarget[ras.traceOfs + c1] |= (char)( 0x80 >> f1 );
}
+
+ Exit:
+ FT_TRACE7(( "\n" ));
}
@@ -2539,32 +2457,39 @@
Long e1, e2;
+ FT_TRACE7(( " x=%d y=[%.12f;%.12f]",
+ y,
+ x1 / (double)ras.precision,
+ x2 / (double)ras.precision ));
+
e1 = CEILING( x1 );
e2 = FLOOR ( x2 );
if ( e1 == e2 )
{
- Byte f1;
- PByte bits;
-
-
- bits = ras.bTarget + ( y >> 3 );
- f1 = (Byte)( 0x80 >> ( y & 7 ) );
-
e1 = TRUNC( e1 );
if ( e1 >= 0 && (ULong)e1 < ras.target.rows )
{
+ Byte f1;
+ PByte bits;
PByte p;
- p = bits - e1 * ras.target.pitch;
+ FT_TRACE7(( " -> y=%d (drop-out)", e1 ));
+
+ bits = ras.bTarget + ( y >> 3 );
+ f1 = (Byte)( 0x80 >> ( y & 7 ) );
+ p = bits - e1 * ras.target.pitch;
+
if ( ras.target.pitch > 0 )
- p += ( ras.target.rows - 1 ) * ras.target.pitch;
+ p += (Long)( ras.target.rows - 1 ) * ras.target.pitch;
p[0] |= f1;
}
}
+
+ FT_TRACE7(( "\n" ));
}
}
@@ -2581,6 +2506,11 @@
Byte f1;
+ FT_TRACE7(( " x=%d y=[%.12f;%.12f]",
+ y,
+ x1 / (double)ras.precision,
+ x2 / (double)ras.precision ));
+
/* During the horizontal sweep, we only take care of drop-outs */
/* e1 + <-- pixel center */
@@ -2602,6 +2532,8 @@
Int dropOutControl = left->flags & 7;
+ FT_TRACE7(( ", dropout=%d", dropOutControl ));
+
if ( e1 == e2 + ras.precision )
{
switch ( dropOutControl )
@@ -2623,14 +2555,14 @@
left->height <= 0 &&
!( left->flags & Overshoot_Top &&
x2 - x1 >= ras.precision_half ) )
- return;
+ goto Exit;
/* leftmost stub test */
if ( right->next == left &&
left->start == y &&
!( left->flags & Overshoot_Bottom &&
x2 - x1 >= ras.precision_half ) )
- return;
+ goto Exit;
if ( dropOutControl == 1 )
pxl = e2;
@@ -2639,7 +2571,7 @@
break;
default: /* modes 2, 3, 6, 7 */
- return; /* no drop-out control */
+ goto Exit; /* no drop-out control */
}
/* undocumented but confirmed: If the drop-out would result in a */
@@ -2660,30 +2592,35 @@
bits -= e1 * ras.target.pitch;
if ( ras.target.pitch > 0 )
- bits += ( ras.target.rows - 1 ) * ras.target.pitch;
+ bits += (Long)( ras.target.rows - 1 ) * ras.target.pitch;
if ( e1 >= 0 &&
(ULong)e1 < ras.target.rows &&
*bits & f1 )
- return;
+ goto Exit;
}
else
- return;
+ goto Exit;
}
- bits = ras.bTarget + ( y >> 3 );
- f1 = (Byte)( 0x80 >> ( y & 7 ) );
-
e1 = TRUNC( pxl );
if ( e1 >= 0 && (ULong)e1 < ras.target.rows )
{
+ FT_TRACE7(( " -> y=%d (drop-out)", e1 ));
+
+ bits = ras.bTarget + ( y >> 3 );
+ f1 = (Byte)( 0x80 >> ( y & 7 ) );
bits -= e1 * ras.target.pitch;
+
if ( ras.target.pitch > 0 )
- bits += ( ras.target.rows - 1 ) * ras.target.pitch;
+ bits += (Long)( ras.target.rows - 1 ) * ras.target.pitch;
bits[0] |= f1;
}
+
+ Exit:
+ FT_TRACE7(( "\n" ));
}
@@ -2695,249 +2632,6 @@
}
-#ifdef FT_RASTER_OPTION_ANTI_ALIASING
-
-
- /*************************************************************************/
- /* */
- /* Vertical Gray Sweep Procedure Set */
- /* */
- /* These two routines are used during the vertical gray-levels sweep */
- /* phase by the generic Draw_Sweep() function. */
- /* */
- /* NOTES */
- /* */
- /* - The target pixmap's width *must* be a multiple of 4. */
- /* */
- /* - You have to use the function Vertical_Sweep_Span() for the gray */
- /* span call. */
- /* */
- /*************************************************************************/
-
- static void
- Vertical_Gray_Sweep_Init( RAS_ARGS Short* min,
- Short* max )
- {
- Long pitch, byte_len;
-
-
- *min = *min & -2;
- *max = ( *max + 3 ) & -2;
-
- ras.traceOfs = 0;
- pitch = ras.target.pitch;
- byte_len = -pitch;
- ras.traceIncr = (Short)byte_len;
- ras.traceG = ( *min / 2 ) * byte_len;
-
- if ( pitch > 0 )
- {
- ras.traceG += ( ras.target.rows - 1 ) * pitch;
- byte_len = -byte_len;
- }
-
- ras.gray_min_x = (Short)byte_len;
- ras.gray_max_x = -(Short)byte_len;
- }
-
-
- static void
- Vertical_Gray_Sweep_Step( RAS_ARG )
- {
- short* count = (short*)count_table;
- Byte* grays;
-
-
- ras.traceOfs += ras.gray_width;
-
- if ( ras.traceOfs > ras.gray_width )
- {
- PByte pix;
-
-
- pix = ras.gTarget + ras.traceG + ras.gray_min_x * 4;
- grays = ras.grays;
-
- if ( ras.gray_max_x >= 0 )
- {
- Long last_pixel = ras.target.width - 1;
- Int last_cell = last_pixel >> 2;
- Int last_bit = last_pixel & 3;
- Bool over = 0;
-
- Int c1, c2;
- PByte bit, bit2;
-
-
- if ( ras.gray_max_x >= last_cell && last_bit != 3 )
- {
- ras.gray_max_x = last_cell - 1;
- over = 1;
- }
-
- if ( ras.gray_min_x < 0 )
- ras.gray_min_x = 0;
-
- bit = ras.bTarget + ras.gray_min_x;
- bit2 = bit + ras.gray_width;
-
- c1 = ras.gray_max_x - ras.gray_min_x;
-
- while ( c1 >= 0 )
- {
- c2 = count[*bit] + count[*bit2];
-
- if ( c2 )
- {
- pix[0] = grays[(c2 >> 12) & 0x000F];
- pix[1] = grays[(c2 >> 8 ) & 0x000F];
- pix[2] = grays[(c2 >> 4 ) & 0x000F];
- pix[3] = grays[ c2 & 0x000F];
-
- *bit = 0;
- *bit2 = 0;
- }
-
- bit++;
- bit2++;
- pix += 4;
- c1--;
- }
-
- if ( over )
- {
- c2 = count[*bit] + count[*bit2];
- if ( c2 )
- {
- switch ( last_bit )
- {
- case 2:
- pix[2] = grays[(c2 >> 4 ) & 0x000F];
- case 1:
- pix[1] = grays[(c2 >> 8 ) & 0x000F];
- default:
- pix[0] = grays[(c2 >> 12) & 0x000F];
- }
-
- *bit = 0;
- *bit2 = 0;
- }
- }
- }
-
- ras.traceOfs = 0;
- ras.traceG += ras.traceIncr;
-
- ras.gray_min_x = 32000;
- ras.gray_max_x = -32000;
- }
- }
-
-
- static void
- Horizontal_Gray_Sweep_Span( RAS_ARGS Short y,
- FT_F26Dot6 x1,
- FT_F26Dot6 x2,
- PProfile left,
- PProfile right )
- {
- /* nothing, really */
- FT_UNUSED_RASTER;
- FT_UNUSED( y );
- FT_UNUSED( x1 );
- FT_UNUSED( x2 );
- FT_UNUSED( left );
- FT_UNUSED( right );
- }
-
-
- static void
- Horizontal_Gray_Sweep_Drop( RAS_ARGS Short y,
- FT_F26Dot6 x1,
- FT_F26Dot6 x2,
- PProfile left,
- PProfile right )
- {
- Long e1, e2;
- PByte pixel;
-
-
- /* During the horizontal sweep, we only take care of drop-outs */
-
- e1 = CEILING( x1 );
- e2 = FLOOR ( x2 );
-
- if ( e1 > e2 )
- {
- Int dropOutControl = left->flags & 7;
-
-
- if ( e1 == e2 + ras.precision )
- {
- switch ( dropOutControl )
- {
- case 0: /* simple drop-outs including stubs */
- e1 = e2;
- break;
-
- case 4: /* smart drop-outs including stubs */
- e1 = FLOOR( ( x1 + x2 - 1 ) / 2 + ras.precision_half );
- break;
-
- case 1: /* simple drop-outs excluding stubs */
- case 5: /* smart drop-outs excluding stubs */
- /* see Vertical_Sweep_Drop for details */
-
- /* rightmost stub test */
- if ( left->next == right && left->height <= 0 )
- return;
-
- /* leftmost stub test */
- if ( right->next == left && left->start == y )
- return;
-
- if ( dropOutControl == 1 )
- e1 = e2;
- else
- e1 = FLOOR( ( x1 + x2 - 1 ) / 2 + ras.precision_half );
-
- break;
-
- default: /* modes 2, 3, 6, 7 */
- return; /* no drop-out control */
- }
- }
- else
- return;
- }
-
- if ( e1 >= 0 )
- {
- Byte color;
-
-
- if ( x2 - x1 >= ras.precision_half )
- color = ras.grays[2];
- else
- color = ras.grays[1];
-
- e1 = TRUNC( e1 ) / 2;
- if ( e1 < ras.target.rows )
- {
- pixel = ras.gTarget - e1 * ras.target.pitch + y / 2;
- if ( ras.target.pitch > 0 )
- pixel += ( ras.target.rows - 1 ) * ras.target.pitch;
-
- if ( pixel[0] == ras.grays[0] )
- pixel[0] = color;
- }
- }
- }
-
-
-#endif /* FT_RASTER_OPTION_ANTI_ALIASING */
-
-
/*************************************************************************/
/* */
/* Generic Sweep Drawing routine */
@@ -3007,7 +2701,7 @@
while ( P )
{
- P->countL = (UShort)( P->start - min_Y );
+ P->countL = P->start - min_Y;
P = P->link;
}
@@ -3270,7 +2964,7 @@
/* <Return> */
/* FreeType error code. 0 means success. */
/* */
- FT_LOCAL_DEF( FT_Error )
+ static FT_Error
Render_Glyph( RAS_ARG )
{
FT_Error error;
@@ -3293,10 +2987,12 @@
ras.dropOutControl += 1;
}
- ras.second_pass = (FT_Byte)( !( ras.outline.flags &
- FT_OUTLINE_SINGLE_PASS ) );
+ ras.second_pass = (Bool)( !( ras.outline.flags &
+ FT_OUTLINE_SINGLE_PASS ) );
/* Vertical Sweep */
+ FT_TRACE7(( "Vertical pass (ftraster)\n" ));
+
ras.Proc_Sweep_Init = Vertical_Sweep_Init;
ras.Proc_Sweep_Span = Vertical_Sweep_Span;
ras.Proc_Sweep_Drop = Vertical_Sweep_Drop;
@@ -3304,9 +3000,9 @@
ras.band_top = 0;
ras.band_stack[0].y_min = 0;
- ras.band_stack[0].y_max = (short)( ras.target.rows - 1 );
+ ras.band_stack[0].y_max = (Short)( ras.target.rows - 1 );
- ras.bWidth = (unsigned short)ras.target.width;
+ ras.bWidth = (UShort)ras.target.width;
ras.bTarget = (Byte*)ras.target.buffer;
if ( ( error = Render_Single_Pass( RAS_VARS 0 ) ) != 0 )
@@ -3315,6 +3011,8 @@
/* Horizontal Sweep */
if ( ras.second_pass && ras.dropOutControl != 2 )
{
+ FT_TRACE7(( "Horizontal pass (ftraster)\n" ));
+
ras.Proc_Sweep_Init = Horizontal_Sweep_Init;
ras.Proc_Sweep_Span = Horizontal_Sweep_Span;
ras.Proc_Sweep_Drop = Horizontal_Sweep_Drop;
@@ -3322,7 +3020,7 @@
ras.band_top = 0;
ras.band_stack[0].y_min = 0;
- ras.band_stack[0].y_max = (short)( ras.target.width - 1 );
+ ras.band_stack[0].y_max = (Short)( ras.target.width - 1 );
if ( ( error = Render_Single_Pass( RAS_VARS 1 ) ) != 0 )
return error;
@@ -3332,118 +3030,10 @@
}
-#ifdef FT_RASTER_OPTION_ANTI_ALIASING
-
- /*************************************************************************/
- /* */
- /* <Function> */
- /* Render_Gray_Glyph */
- /* */
- /* <Description> */
- /* Render a glyph with grayscaling. Sub-banding if needed. */
- /* */
- /* <Return> */
- /* FreeType error code. 0 means success. */
- /* */
- FT_LOCAL_DEF( FT_Error )
- Render_Gray_Glyph( RAS_ARG )
- {
- Long pixel_width;
- FT_Error error;
-
-
- Set_High_Precision( RAS_VARS ras.outline.flags &
- FT_OUTLINE_HIGH_PRECISION );
- ras.scale_shift = ras.precision_shift + 1;
-
- if ( ras.outline.flags & FT_OUTLINE_IGNORE_DROPOUTS )
- ras.dropOutControl = 2;
- else
- {
- if ( ras.outline.flags & FT_OUTLINE_SMART_DROPOUTS )
- ras.dropOutControl = 4;
- else
- ras.dropOutControl = 0;
-
- if ( !( ras.outline.flags & FT_OUTLINE_INCLUDE_STUBS ) )
- ras.dropOutControl += 1;
- }
-
- ras.second_pass = !( ras.outline.flags & FT_OUTLINE_SINGLE_PASS );
-
- /* Vertical Sweep */
-
- ras.band_top = 0;
- ras.band_stack[0].y_min = 0;
- ras.band_stack[0].y_max = 2 * ras.target.rows - 1;
-
- ras.bWidth = ras.gray_width;
- pixel_width = 2 * ( ( ras.target.width + 3 ) >> 2 );
-
- if ( ras.bWidth > pixel_width )
- ras.bWidth = pixel_width;
-
- ras.bWidth = ras.bWidth * 8;
- ras.bTarget = (Byte*)ras.gray_lines;
- ras.gTarget = (Byte*)ras.target.buffer;
-
- ras.Proc_Sweep_Init = Vertical_Gray_Sweep_Init;
- ras.Proc_Sweep_Span = Vertical_Sweep_Span;
- ras.Proc_Sweep_Drop = Vertical_Sweep_Drop;
- ras.Proc_Sweep_Step = Vertical_Gray_Sweep_Step;
-
- error = Render_Single_Pass( RAS_VARS 0 );
- if ( error )
- return error;
-
- /* Horizontal Sweep */
- if ( ras.second_pass && ras.dropOutControl != 2 )
- {
- ras.Proc_Sweep_Init = Horizontal_Sweep_Init;
- ras.Proc_Sweep_Span = Horizontal_Gray_Sweep_Span;
- ras.Proc_Sweep_Drop = Horizontal_Gray_Sweep_Drop;
- ras.Proc_Sweep_Step = Horizontal_Sweep_Step;
-
- ras.band_top = 0;
- ras.band_stack[0].y_min = 0;
- ras.band_stack[0].y_max = ras.target.width * 2 - 1;
-
- error = Render_Single_Pass( RAS_VARS 1 );
- if ( error )
- return error;
- }
-
- return Raster_Err_None;
- }
-
-#else /* !FT_RASTER_OPTION_ANTI_ALIASING */
-
- FT_LOCAL_DEF( FT_Error )
- Render_Gray_Glyph( RAS_ARG )
- {
- FT_UNUSED_RASTER;
-
- return FT_THROW( Unsupported );
- }
-
-#endif /* !FT_RASTER_OPTION_ANTI_ALIASING */
-
-
static void
ft_black_init( black_PRaster raster )
{
-#ifdef FT_RASTER_OPTION_ANTI_ALIASING
- FT_UInt n;
-
-
- /* set default 5-levels gray palette */
- for ( n = 0; n < 5; n++ )
- raster->grays[n] = n * 255 / 4;
-
- raster->gray_width = RASTER_GRAY_LINES / 2;
-#else
FT_UNUSED( raster );
-#endif
}
@@ -3518,55 +3108,23 @@
static void
ft_black_reset( black_PRaster raster,
char* pool_base,
- long pool_size )
+ Long pool_size )
{
- if ( raster )
- {
- if ( pool_base && pool_size >= (long)sizeof ( black_TWorker ) + 2048 )
- {
- black_PWorker worker = (black_PWorker)pool_base;
-
-
- raster->buffer = pool_base + ( ( sizeof ( *worker ) + 7 ) & ~7 );
- raster->buffer_size = (long)( pool_base + pool_size -
- (char*)raster->buffer );
- raster->worker = worker;
- }
- else
- {
- raster->buffer = NULL;
- raster->buffer_size = 0;
- raster->worker = NULL;
- }
- }
+ FT_UNUSED( raster );
+ FT_UNUSED( pool_base );
+ FT_UNUSED( pool_size );
}
static int
ft_black_set_mode( black_PRaster raster,
- unsigned long mode,
+ ULong mode,
const char* palette )
{
-#ifdef FT_RASTER_OPTION_ANTI_ALIASING
-
- if ( mode == FT_MAKE_TAG( 'p', 'a', 'l', '5' ) )
- {
- /* set 5-levels gray palette */
- raster->grays[0] = palette[0];
- raster->grays[1] = palette[1];
- raster->grays[2] = palette[2];
- raster->grays[3] = palette[3];
- raster->grays[4] = palette[4];
- }
-
-#else
-
FT_UNUSED( raster );
FT_UNUSED( mode );
FT_UNUSED( palette );
-#endif
-
return 0;
}
@@ -3577,10 +3135,13 @@
{
const FT_Outline* outline = (const FT_Outline*)params->source;
const FT_Bitmap* target_map = params->target;
- black_PWorker worker;
+ black_TWorker worker[1];
+
+ Long buffer[FT_MAX( FT_RENDER_POOL_SIZE, 2048 ) / sizeof ( Long )];
- if ( !raster || !raster->buffer || !raster->buffer_size )
+
+ if ( !raster )
return FT_THROW( Not_Ini );
if ( !outline )
@@ -3597,12 +3158,13 @@
outline->contours[outline->n_contours - 1] + 1 )
return FT_THROW( Invalid );
- worker = raster->worker;
-
/* this version of the raster does not support direct rendering, sorry */
if ( params->flags & FT_RASTER_FLAG_DIRECT )
return FT_THROW( Unsupported );
+ if ( params->flags & FT_RASTER_FLAG_AA )
+ return FT_THROW( Unsupported );
+
if ( !target_map )
return FT_THROW( Invalid );
@@ -3616,30 +3178,23 @@
ras.outline = *outline;
ras.target = *target_map;
- worker->buff = (PLong) raster->buffer;
- worker->sizeBuff = worker->buff +
- raster->buffer_size / sizeof ( Long );
-#ifdef FT_RASTER_OPTION_ANTI_ALIASING
- worker->grays = raster->grays;
- worker->gray_width = raster->gray_width;
+ worker->buff = buffer;
+ worker->sizeBuff = (&buffer)[1]; /* Points to right after buffer. */
- FT_MEM_ZERO( worker->gray_lines, worker->gray_width * 2 );
-#endif
-
- return ( params->flags & FT_RASTER_FLAG_AA )
- ? Render_Gray_Glyph( RAS_VAR )
- : Render_Glyph( RAS_VAR );
+ return Render_Glyph( RAS_VAR );
}
- FT_DEFINE_RASTER_FUNCS( ft_standard_raster,
+ FT_DEFINE_RASTER_FUNCS(
+ ft_standard_raster,
+
FT_GLYPH_FORMAT_OUTLINE,
+
(FT_Raster_New_Func) ft_black_new,
(FT_Raster_Reset_Func) ft_black_reset,
(FT_Raster_Set_Mode_Func)ft_black_set_mode,
(FT_Raster_Render_Func) ft_black_render,
- (FT_Raster_Done_Func) ft_black_done
- )
+ (FT_Raster_Done_Func) ft_black_done )
/* END */
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-25 06:02:37 +0000