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Bug 1349418 - Remove checkerboarding code and just use an opaque background color behind root scroll frames. r=kats

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This commit is contained in:
Markus Stange
2017-04-10 17:01:53 +12:00
parent 85f31a7ad5
commit f510a8a0ad
12 changed files with 21 additions and 111 deletions
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29
gfx/layers/composite/LayerManagerComposite.cpp
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@@ -1450,35 +1450,6 @@ LayerComposite::HasStaleCompositor() const
return mCompositeManager->GetCompositor() != mCompositor;
}
static bool
LayerHasCheckerboardingAPZC(Layer* aLayer, Color* aOutColor)
{
bool answer = false;
for (LayerMetricsWrapper i(aLayer, LayerMetricsWrapper::StartAt::BOTTOM); i; i = i.GetParent()) {
if (!i.Metrics().IsScrollable()) {
continue;
}
if (i.GetApzc() && i.GetApzc()->IsCurrentlyCheckerboarding()) {
if (aOutColor) {
*aOutColor = i.Metadata().GetBackgroundColor();
}
answer = true;
break;
}
break;
}
return answer;
}
bool
LayerComposite::NeedToDrawCheckerboarding(gfx::Color* aOutCheckerboardingColor)
{
return GetLayer()->Manager()->AsyncPanZoomEnabled() &&
(GetLayer()->GetContentFlags() & Layer::CONTENT_OPAQUE) &&
GetLayer()->IsOpaqueForVisibility() &&
LayerHasCheckerboardingAPZC(GetLayer(), aOutCheckerboardingColor);
}
#ifndef MOZ_HAVE_PLATFORM_SPECIFIC_LAYER_BUFFERS
/*static*/ bool