Elements with backdrop-filter cannot be clipped with clip-path or mask
https://bugs.webkit.org/show_bug.cgi?id=142662
<rdar://problem/20150192>
Patch by Antoine Quint <graouts@apple.com> on 2016-05-24
Reviewed by Dean Jackson.
Source/WebCore:
We used to only apply the mask to the layer contents but did not account
for the fact that a layer backdrop may exist. We now correctly mask the
backdrop layer as well as the layer contents.
Test: css3/filters/backdrop/backdrop-filter-with-clip-path.html
* platform/graphics/ca/GraphicsLayerCA.cpp:
(WebCore::GraphicsLayerCA::updateShape):
Ensure clones of a layer use the same shape path.
(WebCore::GraphicsLayerCA::updateMaskLayer):
If we have a backdrop layer, ensure that we apply a clone of the mask layer applied to
the layer contents.
Source/WebKit2:
Ensure layer clones are set up with the same shape path as their original layer.
* WebProcess/WebPage/mac/PlatformCALayerRemote.cpp:
(WebKit::PlatformCALayerRemote::updateClonedLayerProperties):
LayoutTests:
New test that checks that applying a backdrop-filter and a clip-path on a single
element has the same effect as applying a clip-path on a parent of a child with
a backdrop-filter.
* css3/filters/backdrop/backdrop-filter-with-clip-path-expected.txt: Added.
* css3/filters/backdrop/backdrop-filter-with-clip-path.html: Added.
* platform/ios-simulator/css3/filters/backdrop/backdrop-filter-with-clip-path-expected.html: Added.
* platform/mac/css3/filters/backdrop/backdrop-filter-with-clip-path-expected.png: Added.
git-svn-id: http://svn.webkit.org/repository/webkit/trunk@201349 268f45cc-cd09-0410-ab3c-d52691b4dbfc
9 files changed
