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sw_engine renderer: fix aliasing shape outline result.

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There a scenario detected that stroke 2 is not enough to cover
shape outlines. So make it bigger size.
This commit is contained in:
Hermet Park 2020-10-22 14:55:22 +09:00 • committed by Hermet Park
parent c807010554
commit 46bd78a7c3
1 changed files with 4 additions and 1 deletions
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5
src/lib/sw_engine/tvgSwRenderer.cpp
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@ -62,7 +62,10 @@ struct SwTask : Task
shapeReset(&shape); shapeReset(&shape);
if (!shapePrepare(&shape, sdata, clip, transform)) return; if (!shapePrepare(&shape, sdata, clip, transform)) return;
if (renderShape) { if (renderShape) {
auto antiAlias = (strokeAlpha > 0 && strokeWidth >= 2) ? false : true; /* We assume that if stroke width is bigger than 2,
shape outline below stroke could be full covered by stroke drawing.
Thus it turns off antialising in that condition. */
auto antiAlias = (strokeAlpha > 0 && strokeWidth > 2) ? false : true;
if (!shapeGenRle(&shape, sdata, clip, antiAlias, compList.size() > 0 ? true : false)) return; if (!shapeGenRle(&shape, sdata, clip, antiAlias, compList.size() > 0 ? true : false)) return;
} }
} }