Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: d6114259cba014fee42ac469271069b0c4f887d4
https://github.com/WebKit/WebKit/commit/d6114259cba014fee42ac469271069b0c4f887d4
Author: Matt Woodrow <mattwood...@apple.com>
Date: 2024-05-24 (Fri, 24 May 2024)
Changed paths:
A
LayoutTests/compositing/canvas/copy-backing-store-visibility-hidden-expected.html
A LayoutTests/compositing/canvas/copy-backing-store-visibility-hidden.html
M Source/WebCore/rendering/RenderLayerBacking.cpp
Log Message:
-----------
Toggling visibility:hidden on the parent of a <canvas> can cause the previous
frame's contents to be shown.
https://bugs.webkit.org/show_bug.cgi?id=274262
<rdar://128226178>
Reviewed by Simon Fraser.
We should only try to use 'copy' compositing mode to transfer the canvas buffer
into the layer (and thus
omit any pixel clearing) if there is visible content to copy.
*
LayoutTests/compositing/canvas/copy-backing-store-visibility-hidden-expected.html:
Added.
* LayoutTests/compositing/canvas/copy-backing-store-visibility-hidden.html:
Added.
* Source/WebCore/rendering/RenderLayerBacking.cpp:
(WebCore::RenderLayerBacking::updateConfiguration):
Canonical link: https://commits.webkit.org/279302@main
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