ref: 50fda0be3f9ef5dc97f6ee958bb446f09798bee0
parent: c412de52fb909dcdf6e60c574d1f991a4f43cb3b
author: Alexei Podtelezhnikov <[email protected]>
date: Sat Jun 9 18:52:43 EDT 2018
[raster] Deal with pitch sign earlier.
* src/raster/ftraster.c (black_TWorker): Remove unused `traceG',
s/bTarget/bOrigin/.
(Render_Glyph): Set `ras.bOrigin' at the bottom-left corner.
(Vertical_Sweep_Init, {Vertical,Horizontal}_Sweep_{Span,Drop}):
Updated accordingly.
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,13 @@
+2018-06-09 Alexei Podtelezhnikov <[email protected]>
+
+ [raster] Deal with pitch sign earlier.
+
+ * src/raster/ftraster.c (black_TWorker): Remove unused `traceG',
+ s/bTarget/bOrigin/.
+ (Render_Glyph): Set `ras.bOrigin' at the bottom-left corner.
+ (Vertical_Sweep_Init, {Vertical,Horizontal}_Sweep_{Span,Drop}):+ Updated accordingly.
+
2018-06-09 Werner Lemberg <[email protected]>
[sfnt] Read `CPAL' version 1 tables.
--- a/src/raster/ftraster.c
+++ b/src/raster/ftraster.c
@@ -494,7 +494,7 @@
TPoint* arc; /* current Bezier arc pointer */
UShort bWidth; /* target bitmap width */
- PByte bTarget; /* target bitmap buffer */
+ PByte bOrigin; /* target bitmap bottom-left origin */
Long lastX, lastY;
Long minY, maxY;
@@ -517,8 +517,6 @@
FT_Outline outline;
Long traceOfs; /* current offset in target bitmap */
- Long traceG; /* current offset in target pixmap */
-
Short traceIncr; /* sweep's increment in target bitmap */
/* dispatch variables */
@@ -2221,8 +2219,6 @@
ras.traceIncr = (Short)-pitch;
ras.traceOfs = -*min * pitch;
- if ( pitch > 0 )
- ras.traceOfs += (Long)( ras.target.rows - 1 ) * pitch;
}
@@ -2280,7 +2276,7 @@
f1 = (Byte) ( 0xFF >> ( e1 & 7 ) );
f2 = (Byte) ~( 0x7F >> ( e2 & 7 ) );
- target = ras.bTarget + ras.traceOfs + c1;
+ target = ras.bOrigin + ras.traceOfs + c1;
c2 -= c1;
if ( c2 > 0 )
@@ -2438,7 +2434,7 @@
f1 = (Short)( e1 & 7 );
if ( e1 >= 0 && e1 < ras.bWidth &&
- ras.bTarget[ras.traceOfs + c1] & ( 0x80 >> f1 ) )
+ ras.bOrigin[ras.traceOfs + c1] & ( 0x80 >> f1 ) )
goto Exit;
}
else
@@ -2454,7 +2450,7 @@
c1 = (Short)( e1 >> 3 );
f1 = (Short)( e1 & 7 );
- ras.bTarget[ras.traceOfs + c1] |= (char)( 0x80 >> f1 );
+ ras.bOrigin[ras.traceOfs + c1] |= (char)( 0x80 >> f1 );
}
Exit:
@@ -2521,19 +2517,14 @@
{Byte f1;
PByte bits;
- PByte p;
FT_TRACE7(( " -> y=%d (drop-out)", e1 ));
- bits = ras.bTarget + ( y >> 3 );
+ bits = ras.bOrigin + ( y >> 3 ) - e1 * ras.target.pitch;
f1 = (Byte)( 0x80 >> ( y & 7 ) );
- p = bits - e1 * ras.target.pitch;
- if ( ras.target.pitch > 0 )
- p += (Long)( ras.target.rows - 1 ) * ras.target.pitch;
-
- p[0] |= f1;
+ bits[0] |= f1;
}
}
@@ -2635,13 +2626,9 @@
e1 = TRUNC( e1 );
- bits = ras.bTarget + ( y >> 3 );
+ bits = ras.bOrigin + ( y >> 3 ) - e1 * ras.target.pitch;
f1 = (Byte)( 0x80 >> ( y & 7 ) );
- bits -= e1 * ras.target.pitch;
- if ( ras.target.pitch > 0 )
- bits += (Long)( ras.target.rows - 1 ) * ras.target.pitch;
-
if ( e1 >= 0 &&
(ULong)e1 < ras.target.rows &&
*bits & f1 )
@@ -2657,13 +2644,9 @@
{FT_TRACE7(( " -> y=%d (drop-out)", e1 ));
- bits = ras.bTarget + ( y >> 3 );
+ bits = ras.bOrigin + ( y >> 3 ) - e1 * ras.target.pitch;
f1 = (Byte)( 0x80 >> ( y & 7 ) );
- bits -= e1 * ras.target.pitch;
- if ( ras.target.pitch > 0 )
- bits += (Long)( ras.target.rows - 1 ) * ras.target.pitch;
-
bits[0] |= f1;
}
@@ -3140,7 +3123,10 @@
ras.band_stack[0].y_max = (Short)( ras.target.rows - 1 );
ras.bWidth = (UShort)ras.target.width;
- ras.bTarget = (Byte*)ras.target.buffer;
+ ras.bOrigin = (Byte*)ras.target.buffer;
+
+ if ( ras.target.pitch > 0 )
+ ras.bOrigin += (Long)( ras.target.rows - 1 ) * ras.target.pitch;
if ( ( error = Render_Single_Pass( RAS_VARS 0 ) ) != 0 )
return error;