Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: d56cbfb1f04c8b668cac67a91d147edd96b0715c
      
https://github.com/WebKit/WebKit/commit/d56cbfb1f04c8b668cac67a91d147edd96b0715c
  Author: Fujii Hironori <[email protected]>
  Date:   2026-05-20 (Wed, 20 May 2026)

  Changed paths:
    A 
LayoutTests/css3/filters/backdrop/backdrop-blur-and-subsequent-elements-expected.html
    A 
LayoutTests/css3/filters/backdrop/backdrop-blur-and-subsequent-elements.html
    M Source/WebCore/platform/graphics/skia/SkiaCompositingLayer.cpp
    M Source/WebCore/platform/graphics/skia/SkiaCompositingLayer.h

  Log Message:
  -----------
  SkiaCompositingLayer: backdrop filter shouldn't affect to subsequent elements 
of element E
https://bugs.webkit.org/show_bug.cgi?id=315165

Reviewed by Carlos Garcia Campos.

As per <https://drafts.csswg.org/filter-effects-2/#BackdropRoot>, the Backdrop
Root Image should

> Paint all content, in painting order, between (and including) the
> ancestor Backdrop Root element and element E.

So, we have to skip painting all elements after element E to make the Backdrop
Root Image.

Test: css3/filters/backdrop/backdrop-blur-and-subsequent-elements.html

* 
LayoutTests/css3/filters/backdrop/backdrop-blur-and-subsequent-elements-expected.html:
 Added.
* LayoutTests/css3/filters/backdrop/backdrop-blur-and-subsequent-elements.html: 
Added.
* Source/WebCore/platform/graphics/skia/SkiaCompositingLayer.cpp:
(WebCore::SkiaCompositingLayer::paintSelfAndChildren):
(WebCore::SkiaCompositingLayer::recursivePaint):
* Source/WebCore/platform/graphics/skia/SkiaCompositingLayer.h:

Canonical link: https://commits.webkit.org/313560@main



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