Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 382e5cfc863b809dbe287cb92e682226e33c39b4
      
https://github.com/WebKit/WebKit/commit/382e5cfc863b809dbe287cb92e682226e33c39b4
  Author: Jani Hautakangas <[email protected]>
  Date:   2024-11-28 (Thu, 28 Nov 2024)

  Changed paths:
    A LayoutTests/compositing/overlap-blending/backdrop-opacity-expected.html
    A LayoutTests/compositing/overlap-blending/backdrop-opacity.html
    M Source/WebCore/platform/graphics/texmap/TextureMapperLayer.cpp
    M Source/WebCore/platform/graphics/texmap/TextureMapperLayer.h

  Log Message:
  -----------
  [TextureMapper] Fix backdrop root
https://bugs.webkit.org/show_bug.cgi?id=218641

Reviewed by Fujii Hironori.

Fix backdrop root according to Filter Effects Module Level 2.

* Source/WebCore/platform/graphics/texmap/TextureMapperLayer.cpp:
(WebCore::TextureMapperLayer::computeOverlapRegions):
(WebCore::TextureMapperLayer::paintIntoSurface):
(WebCore::TextureMapperLayer::paintWithIntermediateSurface):
* Source/WebCore/platform/graphics/texmap/TextureMapperLayer.h:
(WebCore::TextureMapperLayer::backdropRootLayer const):
(WebCore::TextureMapperLayer::hasMask const):
(WebCore::TextureMapperLayer::hasBackdrop const):
(WebCore::TextureMapperLayer::rootLayer const): Deleted.

Canonical link: https://commits.webkit.org/287154@main



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