mirror of https://github.com/freetype/freetype
[raster] Add more tracing.
* src/raster/ftraster.c (FT_TRACE7) [_STANDALONE_]: Define. (Vertical_Sweep_Span, Vertical_Sweep_Drop, Horizontal_Sweep_Span, Horizontal_Sweep_Drop, Render_Glyph): Add tracing calls.
This commit is contained in:
Werner Lemberg
parent
54d042861b
commit
d1ade6d11a
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@ -1,3 +1,11 @@
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2015-06-01 Werner Lemberg <wl@gnu.org>
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[raster] Add more tracing.
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* src/raster/ftraster.c (FT_TRACE7) [_STANDALONE_]: Define.
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(Vertical_Sweep_Span, Vertical_Sweep_Drop, Horizontal_Sweep_Span,
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Horizontal_Sweep_Drop, Render_Glyph): Add tracing calls.
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2015-06-01 Werner Lemberg <wl@gnu.org>
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[truetype] While tracing opcodes, show code position and stack.
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@ -197,6 +197,7 @@
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#define FT_TRACE( x ) do { } while ( 0 ) /* nothing */
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#define FT_TRACE1( x ) do { } while ( 0 ) /* nothing */
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#define FT_TRACE6( x ) do { } while ( 0 ) /* nothing */
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#define FT_TRACE7( x ) do { } while ( 0 ) /* nothing */
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#endif
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#ifndef FT_THROW
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@ -582,11 +583,11 @@
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* approximating it as a straight segment. The default value of 32 (for
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* low accuracy) corresponds to
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*
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* 32 / 64 == 0.5 pixels ,
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* 32 / 64 == 0.5 pixels,
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*
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* while for the high accuracy case we have
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*
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* 256/ (1 << 12) = 0.0625 pixels .
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* 256 / (1 << 12) = 0.0625 pixels.
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*
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* `precision_jitter' is an epsilon threshold used in
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* `Vertical_Sweep_Span' to deal with small imperfections in the Bezier
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@ -669,13 +670,13 @@
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if ( overshoot )
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ras.cProfile->flags |= Overshoot_Bottom;
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FT_TRACE6(( "New ascending profile = %p\n", ras.cProfile ));
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FT_TRACE6(( " new ascending profile = %p\n", ras.cProfile ));
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break;
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case Descending_State:
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if ( overshoot )
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ras.cProfile->flags |= Overshoot_Top;
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FT_TRACE6(( "New descending profile = %p\n", ras.cProfile ));
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FT_TRACE6(( " new descending profile = %p\n", ras.cProfile ));
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break;
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default:
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@ -730,7 +731,7 @@
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PProfile oldProfile;
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FT_TRACE6(( "Ending profile %p, start = %ld, height = %ld\n",
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FT_TRACE6(( " ending profile %p, start = %ld, height = %ld\n",
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ras.cProfile, ras.cProfile->start, h ));
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ras.cProfile->height = h;
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@ -2194,6 +2195,14 @@
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FT_UNUSED( right );
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/* in high-precision mode, we need 12 digits after the comma to */
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/* represent multiples of 1/(1<<12) = 1/4096 */
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FT_TRACE7(( " y=%d x=[%.12f;%.12f], drop-out=%d",
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y,
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x1 / (double)ras.precision,
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x2 / (double)ras.precision,
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dropOutControl ));
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/* Drop-out control */
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e1 = TRUNC( CEILING( x1 ) );
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@ -2215,6 +2224,8 @@
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if ( e2 >= ras.bWidth )
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e2 = ras.bWidth - 1;
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FT_TRACE7(( " -> x=[%d;%d]", e1, e2 ));
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c1 = (Short)( e1 >> 3 );
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c2 = (Short)( e2 >> 3 );
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@ -2242,6 +2253,8 @@
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else
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*target |= ( f1 & f2 );
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}
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FT_TRACE7(( "\n" ));
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}
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@ -2256,6 +2269,11 @@
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Short c1, f1;
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FT_TRACE7(( " y=%d x=[%.12f;%.12f]",
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y,
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x1 / (double)ras.precision,
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x2 / (double)ras.precision ));
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/* Drop-out control */
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/* e2 x2 x1 e1 */
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@ -2288,6 +2306,8 @@
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Int dropOutControl = left->flags & 7;
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FT_TRACE7(( ", drop-out=%d", dropOutControl ));
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if ( e1 == e2 + ras.precision )
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{
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switch ( dropOutControl )
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@ -2334,14 +2354,14 @@
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left->height <= 0 &&
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!( left->flags & Overshoot_Top &&
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x2 - x1 >= ras.precision_half ) )
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return;
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goto Exit;
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/* lower stub test */
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if ( right->next == left &&
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left->start == y &&
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!( left->flags & Overshoot_Bottom &&
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x2 - x1 >= ras.precision_half ) )
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return;
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goto Exit;
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if ( dropOutControl == 1 )
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pxl = e2;
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@ -2350,7 +2370,7 @@
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break;
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default: /* modes 2, 3, 6, 7 */
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return; /* no drop-out control */
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goto Exit; /* no drop-out control */
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}
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/* undocumented but confirmed: If the drop-out would result in a */
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@ -2371,21 +2391,26 @@
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if ( e1 >= 0 && e1 < ras.bWidth &&
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ras.bTarget[ras.traceOfs + c1] & ( 0x80 >> f1 ) )
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return;
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goto Exit;
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}
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else
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return;
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goto Exit;
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}
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e1 = TRUNC( pxl );
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if ( e1 >= 0 && e1 < ras.bWidth )
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{
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FT_TRACE7(( " -> x=%d (drop-out)", e1 ));
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c1 = (Short)( e1 >> 3 );
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f1 = (Short)( e1 & 7 );
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ras.bTarget[ras.traceOfs + c1] |= (char)( 0x80 >> f1 );
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}
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Exit:
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FT_TRACE7(( "\n" ));
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}
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@ -2432,32 +2457,39 @@
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Long e1, e2;
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FT_TRACE7(( " x=%d y=[%.12f;%.12f]",
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y,
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x1 / (double)ras.precision,
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x2 / (double)ras.precision ));
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e1 = CEILING( x1 );
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e2 = FLOOR ( x2 );
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if ( e1 == e2 )
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{
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Byte f1;
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PByte bits;
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bits = ras.bTarget + ( y >> 3 );
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f1 = (Byte)( 0x80 >> ( y & 7 ) );
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e1 = TRUNC( e1 );
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if ( e1 >= 0 && (ULong)e1 < ras.target.rows )
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{
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Byte f1;
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PByte bits;
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PByte p;
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p = bits - e1 * ras.target.pitch;
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FT_TRACE7(( " -> y=%d (drop-out)", e1 ));
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bits = ras.bTarget + ( y >> 3 );
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f1 = (Byte)( 0x80 >> ( y & 7 ) );
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p = bits - e1 * ras.target.pitch;
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if ( ras.target.pitch > 0 )
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p += (Long)( ras.target.rows - 1 ) * ras.target.pitch;
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p[0] |= f1;
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}
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}
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FT_TRACE7(( "\n" ));
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}
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}
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@ -2474,6 +2506,11 @@
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Byte f1;
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FT_TRACE7(( " x=%d y=[%.12f;%.12f]",
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y,
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x1 / (double)ras.precision,
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x2 / (double)ras.precision ));
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/* During the horizontal sweep, we only take care of drop-outs */
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/* e1 + <-- pixel center */
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@ -2495,6 +2532,8 @@
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Int dropOutControl = left->flags & 7;
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FT_TRACE7(( ", dropout=%d", dropOutControl ));
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if ( e1 == e2 + ras.precision )
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{
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switch ( dropOutControl )
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@ -2516,14 +2555,14 @@
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left->height <= 0 &&
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!( left->flags & Overshoot_Top &&
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x2 - x1 >= ras.precision_half ) )
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return;
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goto Exit;
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/* leftmost stub test */
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if ( right->next == left &&
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left->start == y &&
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!( left->flags & Overshoot_Bottom &&
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x2 - x1 >= ras.precision_half ) )
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return;
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goto Exit;
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if ( dropOutControl == 1 )
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pxl = e2;
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@ -2532,7 +2571,7 @@
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break;
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default: /* modes 2, 3, 6, 7 */
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return; /* no drop-out control */
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goto Exit; /* no drop-out control */
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}
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/* undocumented but confirmed: If the drop-out would result in a */
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@ -2558,25 +2597,30 @@
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if ( e1 >= 0 &&
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(ULong)e1 < ras.target.rows &&
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*bits & f1 )
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return;
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goto Exit;
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}
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else
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return;
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goto Exit;
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}
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bits = ras.bTarget + ( y >> 3 );
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f1 = (Byte)( 0x80 >> ( y & 7 ) );
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e1 = TRUNC( pxl );
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if ( e1 >= 0 && (ULong)e1 < ras.target.rows )
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{
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FT_TRACE7(( " -> y=%d (drop-out)", e1 ));
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bits = ras.bTarget + ( y >> 3 );
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f1 = (Byte)( 0x80 >> ( y & 7 ) );
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bits -= e1 * ras.target.pitch;
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if ( ras.target.pitch > 0 )
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bits += (Long)( ras.target.rows - 1 ) * ras.target.pitch;
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bits[0] |= f1;
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}
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Exit:
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FT_TRACE7(( "\n" ));
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}
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@ -2947,6 +2991,8 @@
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FT_OUTLINE_SINGLE_PASS ) );
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/* Vertical Sweep */
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FT_TRACE7(( "Vertical pass (ftraster)\n" ));
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ras.Proc_Sweep_Init = Vertical_Sweep_Init;
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ras.Proc_Sweep_Span = Vertical_Sweep_Span;
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ras.Proc_Sweep_Drop = Vertical_Sweep_Drop;
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@ -2965,6 +3011,8 @@
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/* Horizontal Sweep */
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if ( ras.second_pass && ras.dropOutControl != 2 )
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{
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FT_TRACE7(( "Horizontal pass (ftraster)\n" ));
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ras.Proc_Sweep_Init = Horizontal_Sweep_Init;
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ras.Proc_Sweep_Span = Horizontal_Sweep_Span;
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ras.Proc_Sweep_Drop = Horizontal_Sweep_Drop;
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