Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 3c71d5e470ce90242e668671d7174a45e3165515
https://github.com/WebKit/WebKit/commit/3c71d5e470ce90242e668671d7174a45e3165515
Author: Matt Woodrow <[email protected]>
Date: 2025-09-26 (Fri, 26 Sep 2025)
Changed paths:
M LayoutTests/platform/ios-18/TestExpectations
M LayoutTests/platform/ios/TestExpectations
M LayoutTests/platform/mac-sequoia/TestExpectations
M LayoutTests/platform/mac/TestExpectations
M Source/WebCore/rendering/RenderLayerCompositor.cpp
M Source/WebCore/rendering/RenderObject.cpp
Log Message:
-----------
Viewport clipping layers are incorrectly positioned when the element is
captured in a view transition.
https://bugs.webkit.org/show_bug.cgi?id=299578
rdar://154886047
Reviewed by Wenson Hsieh.
Viewport clipping layers should only be added for layers that have the
RenderView as their composited ancestor.
Once they get captured in a view transition, their GraphicsLayers will get
reparented as replaced contents into the pseudo element's layers (which is
guaranteed to be composited) so they no longer meet this criteria. As such,
their computed position can be incorrect (not accounting for ancestor offsets)
and they clip incorrectly.
* LayoutTests/platform/ios-18/TestExpectations:
* LayoutTests/platform/ios/TestExpectations:
* LayoutTests/platform/mac-sequoia/TestExpectations:
* LayoutTests/platform/mac/TestExpectations:
* Source/WebCore/rendering/RenderLayerCompositor.cpp:
(WebCore::RenderLayerCompositor::viewportConstrainedSublayers const):
* Source/WebCore/rendering/RenderObject.cpp:
(WebCore::RenderObject::setCapturedInViewTransition):
Canonical link: https://commits.webkit.org/300561@main
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