[webkit-changes] [WebKit/WebKit] b88545: Preserve-3d isn't applied to pseudo elements.

[mattwoodrow]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: b88545397c4f76fd23906b8e81980423c62c5a13
      https://github.com/WebKit/WebKit/commit/b88545397c4f76fd23906b8e81980423c62c5a13
  Author: Matt Woodrow <mattwoodrow at apple.com>
  Date:   2023-02-15 (Wed, 15 Feb 2023)

  Changed paths:
    A LayoutTests/imported/w3c/web-platform-tests/css/css-transforms/preserve3d-pseudo-element-expected.html
    A LayoutTests/imported/w3c/web-platform-tests/css/css-transforms/preserve3d-pseudo-element-ref.html
    A LayoutTests/imported/w3c/web-platform-tests/css/css-transforms/preserve3d-pseudo-element.html
    M Source/WebCore/rendering/RenderLayer.cpp
    M Source/WebCore/rendering/RenderLayerBacking.cpp

  Log Message:
  -----------
  Preserve-3d isn't applied to pseudo elements.
https://bugs.webkit.org/show_bug.cgi?id=252277
<rdar://problem/105474987>

Reviewed by Simon Fraser.

We need to check the parent element in the composed tree to determine if we should be applying preserve-3d.

* LayoutTests/imported/w3c/web-platform-tests/css/css-transforms/preserve3d-pseudo-element-expected.html: Added.
* LayoutTests/imported/w3c/web-platform-tests/css/css-transforms/preserve3d-pseudo-element-ref.html: Added.
* LayoutTests/imported/w3c/web-platform-tests/css/css-transforms/preserve3d-pseudo-element.html: Added.
* Source/WebCore/rendering/RenderLayer.cpp:
(WebCore::parentLayerIsDOMParent):
* Source/WebCore/rendering/RenderLayerBacking.cpp:
(WebCore::ancestorLayerIsDOMParent):

Canonical link: https://commits.webkit.org/260324@main