Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 6a3a1914b4c927b42e0071e2b7dd645acd6340f5
https://github.com/WebKit/WebKit/commit/6a3a1914b4c927b42e0071e2b7dd645acd6340f5
Author: Aditya Keerthi <akeer...@apple.com>
Date: 2025-02-04 (Tue, 04 Feb 2025)
Changed paths:
M Source/WebCore/platform/graphics/GraphicsLayerClient.h
M Source/WebCore/platform/graphics/ca/GraphicsLayerCA.cpp
M Source/WebCore/rendering/RenderLayerBacking.cpp
M Source/WebCore/rendering/RenderLayerCompositor.cpp
M Source/WebCore/rendering/RenderLayerCompositor.h
Log Message:
-----------
Allow backdrop blending outside of transparent webviews
https://bugs.webkit.org/show_bug.cgi?id=286939
rdar://144100719
Reviewed by Matt Woodrow.
It is desirable for `WKWebView` clients that use a transparent webview to be
able
to use `backdrop-filter` / `-apple-visual-effect` in order to apply effects to
content behind the webview.
This is currently not possible as the main frame's layer is made the backdrop
root.
Fix by preventing the main frame's layer from being the backdrop root if the
view's
base background color is transparent.
Thanks to Matt Woodrow for the original patch.
* Source/WebCore/platform/graphics/GraphicsLayerClient.h:
(WebCore::GraphicsLayerClient::backdropRootIsOpaque const):
* Source/WebCore/platform/graphics/ca/GraphicsLayerCA.cpp:
(WebCore::GraphicsLayerCA::flushCompositingState):
(WebCore::GraphicsLayerCA::recursiveCommitChanges):
* Source/WebCore/rendering/RenderLayerBacking.cpp:
(WebCore::RenderLayerBacking::updateBackdropRoot):
* Source/WebCore/rendering/RenderLayerCompositor.cpp:
(WebCore::RenderLayerCompositor::backdropRootIsOpaque const):
* Source/WebCore/rendering/RenderLayerCompositor.h:
Canonical link: https://commits.webkit.org/289838@main
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