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freetype2
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Code Issues 4 Releases Wiki Activity

* src/smooth/ftgrays.c: Move the sweep functions... 

... out of the setjmp/longjmp scope for readability.
This commit is contained in:
Alexei Podtelezhnikov 2023-10-09 22:22:24 -04:00
parent 84cd2e9897
commit 322e580bd0
1 changed files with 134 additions and 134 deletions
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268
src/smooth/ftgrays.c
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@ -1486,139 +1486,6 @@ typedef ptrdiff_t FT_PtrDist;
}
static void
gray_sweep( RAS_ARG )
{
int fill = ( ras.outline.flags & FT_OUTLINE_EVEN_ODD_FILL ) ? 0x100
: INT_MIN;
int coverage;
int y;
for ( y = ras.min_ey; y < ras.max_ey; y++ )
{
PCell cell = ras.ycells[y - ras.min_ey];
TCoord x = ras.min_ex;
TArea cover = 0;
unsigned char* line = ras.target.origin - ras.target.pitch * y;
for ( ; cell != ras.cell_null; cell = cell->next )
{
TArea area;
if ( cover != 0 && cell->x > x )
{
FT_FILL_RULE( coverage, cover, fill );
FT_GRAY_SET( line + x, coverage, cell->x - x );
}
cover += (TArea)cell->cover * ( ONE_PIXEL * 2 );
area = cover - cell->area;
if ( area != 0 && cell->x >= ras.min_ex )
{
FT_FILL_RULE( coverage, area, fill );
line[cell->x] = (unsigned char)coverage;
}
x = cell->x + 1;
}
if ( cover != 0 ) /* only if cropped */
{
FT_FILL_RULE( coverage, cover, fill );
FT_GRAY_SET( line + x, coverage, ras.max_ex - x );
}
}
}
static void
gray_sweep_direct( RAS_ARG )
{
int fill = ( ras.outline.flags & FT_OUTLINE_EVEN_ODD_FILL ) ? 0x100
: INT_MIN;
int coverage;
int y;
FT_Span span[FT_MAX_GRAY_SPANS];
int n = 0;
for ( y = ras.min_ey; y < ras.max_ey; y++ )
{
PCell cell = ras.ycells[y - ras.min_ey];
TCoord x = ras.min_ex;
TArea cover = 0;
for ( ; cell != ras.cell_null; cell = cell->next )
{
TArea area;
if ( cover != 0 && cell->x > x )
{
FT_FILL_RULE( coverage, cover, fill );
span[n].coverage = (unsigned char)coverage;
span[n].x = (short)x;
span[n].len = (unsigned short)( cell->x - x );
if ( ++n == FT_MAX_GRAY_SPANS )
{
/* flush the span buffer and reset the count */
ras.render_span( y, n, span, ras.render_span_data );
n = 0;
}
}
cover += (TArea)cell->cover * ( ONE_PIXEL * 2 );
area = cover - cell->area;
if ( area != 0 && cell->x >= ras.min_ex )
{
FT_FILL_RULE( coverage, area, fill );
span[n].coverage = (unsigned char)coverage;
span[n].x = (short)cell->x;
span[n].len = 1;
if ( ++n == FT_MAX_GRAY_SPANS )
{
/* flush the span buffer and reset the count */
ras.render_span( y, n, span, ras.render_span_data );
n = 0;
}
}
x = cell->x + 1;
}
if ( cover != 0 ) /* only if cropped */
{
FT_FILL_RULE( coverage, cover, fill );
span[n].coverage = (unsigned char)coverage;
span[n].x = (short)x;
span[n].len = (unsigned short)( ras.max_ex - x );
++n;
}
if ( n )
{
/* flush the span buffer and reset the count */
ras.render_span( y, n, span, ras.render_span_data );
n = 0;
}
}
}
#ifdef STANDALONE_
/**************************************************************************
@ -1934,7 +1801,7 @@ typedef ptrdiff_t FT_PtrDist;
if ( continued )
FT_Trace_Enable();
FT_TRACE7(( "band [%d..%d]: %td cell%s remaining/\n",
FT_TRACE7(( "band [%d..%d]: %td cell%s remaining\n",
ras.min_ey,
ras.max_ey,
ras.cell_null - ras.cell_free,
@ -1952,6 +1819,139 @@ typedef ptrdiff_t FT_PtrDist;
}
static void
gray_sweep( RAS_ARG )
{
int fill = ( ras.outline.flags & FT_OUTLINE_EVEN_ODD_FILL ) ? 0x100
: INT_MIN;
int coverage;
int y;
for ( y = ras.min_ey; y < ras.max_ey; y++ )
{
PCell cell = ras.ycells[y - ras.min_ey];
TCoord x = ras.min_ex;
TArea cover = 0;
unsigned char* line = ras.target.origin - ras.target.pitch * y;
for ( ; cell != ras.cell_null; cell = cell->next )
{
TArea area;
if ( cover != 0 && cell->x > x )
{
FT_FILL_RULE( coverage, cover, fill );
FT_GRAY_SET( line + x, coverage, cell->x - x );
}
cover += (TArea)cell->cover * ( ONE_PIXEL * 2 );
area = cover - cell->area;
if ( area != 0 && cell->x >= ras.min_ex )
{
FT_FILL_RULE( coverage, area, fill );
line[cell->x] = (unsigned char)coverage;
}
x = cell->x + 1;
}
if ( cover != 0 ) /* only if cropped */
{
FT_FILL_RULE( coverage, cover, fill );
FT_GRAY_SET( line + x, coverage, ras.max_ex - x );
}
}
}
static void
gray_sweep_direct( RAS_ARG )
{
int fill = ( ras.outline.flags & FT_OUTLINE_EVEN_ODD_FILL ) ? 0x100
: INT_MIN;
int coverage;
int y;
FT_Span span[FT_MAX_GRAY_SPANS];
int n = 0;
for ( y = ras.min_ey; y < ras.max_ey; y++ )
{
PCell cell = ras.ycells[y - ras.min_ey];
TCoord x = ras.min_ex;
TArea cover = 0;
for ( ; cell != ras.cell_null; cell = cell->next )
{
TArea area;
if ( cover != 0 && cell->x > x )
{
FT_FILL_RULE( coverage, cover, fill );
span[n].coverage = (unsigned char)coverage;
span[n].x = (short)x;
span[n].len = (unsigned short)( cell->x - x );
if ( ++n == FT_MAX_GRAY_SPANS )
{
/* flush the span buffer and reset the count */
ras.render_span( y, n, span, ras.render_span_data );
n = 0;
}
}
cover += (TArea)cell->cover * ( ONE_PIXEL * 2 );
area = cover - cell->area;
if ( area != 0 && cell->x >= ras.min_ex )
{
FT_FILL_RULE( coverage, area, fill );
span[n].coverage = (unsigned char)coverage;
span[n].x = (short)cell->x;
span[n].len = 1;
if ( ++n == FT_MAX_GRAY_SPANS )
{
/* flush the span buffer and reset the count */
ras.render_span( y, n, span, ras.render_span_data );
n = 0;
}
}
x = cell->x + 1;
}
if ( cover != 0 ) /* only if cropped */
{
FT_FILL_RULE( coverage, cover, fill );
span[n].coverage = (unsigned char)coverage;
span[n].x = (short)x;
span[n].len = (unsigned short)( ras.max_ex - x );
++n;
}
if ( n )
{
/* flush the span buffer and reset the count */
ras.render_span( y, n, span, ras.render_span_data );
n = 0;
}
}
}
static int
gray_convert_glyph( RAS_ARG )
{