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Make distance field bounds calculation more accurate for strokes

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GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1964313002

Review-Url: https://codereview.chromium.org/1964313002
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bsalomon 2016-05-11 05:53:07 -07:00 committed by Commit bot
parent e19aecdd13
commit 70142347f7
1 changed files with 0 additions and 14 deletions
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14
src/gpu/batches/GrAADistanceFieldPathRenderer.cpp
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@ -101,23 +101,9 @@ bool GrAADistanceFieldPathRenderer::onCanDrawPath(const CanDrawPathArgs& args) c
// scaled to have bounds within 2.0f*kLargeMIP by 2.0f*kLargeMIP
// the goal is to accelerate rendering of lots of small paths that may be scaling
SkScalar maxScale = args.fViewMatrix->getMaxScale();
#if 0 // This is more accurate but changes some GMs. TODO: Standalone change to enable this.
SkRect bounds;
args.fStyle->adjustBounds(&bounds, args.fPath->getBounds());
SkScalar maxDim = SkMaxScalar(bounds.width(), bounds.height());
#else
const SkRect& bounds = args.fPath->getBounds();
SkScalar maxDim = SkMaxScalar(bounds.width(), bounds.height());
const SkStrokeRec& stroke = args.fStyle->strokeRec();
// Approximate stroked size by adding the maximum of the stroke width or 2x the miter limit
if (!stroke.isFillStyle()) {
SkScalar extraWidth = stroke.getWidth();
if (SkPaint::kMiter_Join == stroke.getJoin()) {
extraWidth = SkTMax(extraWidth, 2.0f*stroke.getMiter());
}
maxDim += extraWidth;
}
#endif
return maxDim <= kMediumMIP && maxDim * maxScale <= 2.0f*kLargeMIP;
}