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[Web Animations] [WK1] REGRESSION: opacity doesn't animate https://bugs.webkit.org/show_bug.cgi?id=207044 <rdar://problem/59061225> Reviewed by Simon Fraser. Source/WebCore: Test: webanimations/opacity-animation.html We failed to animate opacity in WK1 because we made the assumption that just because an animation targets only accelerated properties it would be accelerated and wouldn't need to be updated as it runs in WebAnimation::timeToNextTick(). This is incorrect, an animation may fail to start or may fail to get a composited layer, the latter being the case on WK1 because usesCompositing() is false in RenderLayerCompositor::requiresCompositingForAnimation(). We now check that an animation is both only animating accelerated properties and running accelerated to determine that an animation won't need to be updated until it completes. * animation/WebAnimation.cpp: (WebCore::WebAnimation::timeToNextTick const): LayoutTests: * webanimations/opacity-animation-expected.html: Added. * webanimations/opacity-animation.html: Added. Canonical link: https://commits.webkit.org/220065@main git-svn-id: https://svn.webkit.org/repository/webkit/trunk@255504 268f45cc-cd09-0410-ab3c-d52691b4dbfc
2020-01-31 17:58:19 +00:00
<div style="position: absolute; top: 0; left: 0; width: 100px; height: 100px; background-color: black; opacity: 0.5;"></div>