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freetype2
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[raster] Do not skip the second pass without dropout control. 

The second pass also fixes horizontal lines through the pixel centers.

* src/raster/ftraster.c (black_TWorker): Do not use `second_pass'.
(Render_Glyph): Skip the second pass only with the appropriate flag.
This commit is contained in:
Alexei Podtelezhnikov 2021-06-29 23:51:23 -04:00
parent 3696ac5a18
commit 69c3516c88
2 changed files with 12 additions and 11 deletions
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9
ChangeLog
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@ -1,3 +1,12 @@
2021-06-29 Alexei Podtelezhnikov <apodtele@gmail.com>
[raster] Do not skip the second pass without dropout control.
The second pass also fixes horizontal lines through the pixel centers.
* src/raster/ftraster.c (black_TWorker): Do not use `second_pass'.
(Render_Glyph): Skip the second pass only with the appropriate flag.
2021-06-29 Alexei Podtelezhnikov <apodtele@gmail.com>
[raster] Handle sub-band stack locally.

14
src/raster/ftraster.c
View File

@ -483,6 +483,8 @@
Int numTurns; /* number of Y-turns in outline */
Byte dropOutControl; /* current drop_out control method */
UShort bWidth; /* target bitmap width */
PByte bOrigin; /* target bitmap bottom-left origin */
PByte bLine; /* target bitmap current line */
@ -514,13 +516,6 @@
Function_Sweep_Span* Proc_Sweep_Drop;
Function_Sweep_Step* Proc_Sweep_Step;
Byte dropOutControl; /* current drop_out control method */
Bool second_pass; /* indicates whether a horizontal pass */
/* should be performed to control */
/* drop-out accurately when calling */
/* Render_Glyph. */
};
@ -3116,9 +3111,6 @@
ras.dropOutControl += 1;
}
ras.second_pass = (Bool)( !( ras.outline.flags &
FT_OUTLINE_SINGLE_PASS ) );
/* Vertical Sweep */
FT_TRACE7(( "Vertical pass (ftraster)\n" ));
@ -3138,7 +3130,7 @@
return error;
/* Horizontal Sweep */
if ( ras.second_pass && ras.dropOutControl != 2 )
if ( !( ras.outline.flags & FT_OUTLINE_SINGLE_PASS ) )
{
FT_TRACE7(( "Horizontal pass (ftraster)\n" ));