зеркало из https://github.com/stride3d/freetype.git
Improve b/w rasterizer.
Problem reported by Krzysztof Kotlenga <pocek@users.sf.net>. * src/raster/raster.c (Vertical_Sweep_Drop, Horizontal_Sweep_Drop, Horizontal_Gray_Sweep_Drop): For smart drop-out mode, if intersections are equally distant relative to next pixel center, select the left pixel, not the right one.
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ChangeLog
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ChangeLog
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@ -1,3 +1,13 @@
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2009-05-22 Werner Lemberg <wl@gnu.org>
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Improve b/w rasterizer.
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Problem reported by Krzysztof Kotlenga <pocek@users.sf.net>.
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* src/raster/raster.c (Vertical_Sweep_Drop, Horizontal_Sweep_Drop,
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Horizontal_Gray_Sweep_Drop): For smart drop-out mode, if
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intersections are equally distant relative to next pixel center,
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select the left pixel, not the right one.
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2009-05-19 Werner Lemberg <wl@gnu.org>
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Fix Savannah bug #26600.
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@ -2230,7 +2230,7 @@ a };
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break;
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case 4: /* smart drop-outs including stubs */
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pxl = FLOOR( ( x1 + x2 + 1 ) / 2 + ras.precision_half );
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pxl = FLOOR( ( x1 + x2 + 1 ) / 2 + ras.precision_half - 1 );
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break;
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case 1: /* simple drop-outs excluding stubs */
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@ -2276,7 +2276,7 @@ a };
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if ( ras.dropOutControl == 1 )
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pxl = e2;
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else
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pxl = FLOOR( ( x1 + x2 + 1 ) / 2 + ras.precision_half );
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pxl = FLOOR( ( x1 + x2 + 1 ) / 2 + ras.precision_half - 1 );
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break;
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default: /* modes 2, 3, 6, 7 */
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@ -2425,7 +2425,7 @@ a };
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break;
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case 4: /* smart drop-outs including stubs */
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pxl = FLOOR( ( x1 + x2 + 1 ) / 2 + ras.precision_half );
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pxl = FLOOR( ( x1 + x2 + 1 ) / 2 + ras.precision_half - 1 );
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break;
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case 1: /* simple drop-outs excluding stubs */
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@ -2443,7 +2443,7 @@ a };
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if ( ras.dropOutControl == 1 )
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pxl = e2;
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else
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pxl = FLOOR( ( x1 + x2 + 1 ) / 2 + ras.precision_half );
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pxl = FLOOR( ( x1 + x2 + 1 ) / 2 + ras.precision_half - 1 );
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break;
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default: /* modes 2, 3, 6, 7 */
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@ -2675,7 +2675,7 @@ a };
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break;
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case 4: /* smart drop-outs including stubs */
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e1 = FLOOR( ( x1 + x2 + 1 ) / 2 + ras.precision_half );
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e1 = FLOOR( ( x1 + x2 + 1 ) / 2 + ras.precision_half - 1 );
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break;
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case 1: /* simple drop-outs excluding stubs */
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@ -2693,7 +2693,7 @@ a };
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if ( ras.dropOutControl == 1 )
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e1 = e2;
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else
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e1 = FLOOR( ( x1 + x2 + 1 ) / 2 + ras.precision_half );
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e1 = FLOOR( ( x1 + x2 + 1 ) / 2 + ras.precision_half - 1 );
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break;
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