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Bug 1021085 - Inflate the painted rect a bit to deal with rounding error. r=Cwiiis

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This commit is contained in:
Kartikaya Gupta 2014-06-23 08:42:19 -04:00
parent 1f7f22dbb7
commit ab1b3da0d8
1 changed files with 3 additions and 0 deletions
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3
gfx/layers/client/TiledContentClient.cpp
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@ -237,6 +237,9 @@ SharedFrameMetricsHelper::AboutToCheckerboard(const FrameMetrics& aContentMetric
CSSRect painted =
(aContentMetrics.mCriticalDisplayPort.IsEmpty() ? aContentMetrics.mDisplayPort : aContentMetrics.mCriticalDisplayPort)
+ aContentMetrics.GetScrollOffset();
// Inflate painted by some small epsilon to deal with rounding
// error. We should replace this with a FuzzyContains function.
painted.Inflate(0.01f);
CSSRect showing = CSSRect(aCompositorMetrics.GetScrollOffset(), aCompositorMetrics.CalculateBoundedCompositedSizeInCssPixels());
return !painted.Contains(showing);
}