Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: c9369cae04b3f9bd049801a6b27f19707d65b153
      
https://github.com/WebKit/WebKit/commit/c9369cae04b3f9bd049801a6b27f19707d65b153
  Author: Sam Weinig <[email protected]>
  Date:   2026-09-24 (Thu, 24 Sep 2026)

  Changed paths:
    M 
LayoutTests/imported/w3c/web-platform-tests/css/css-color/parsing/alpha-color-computed-expected.txt
    M Source/WebCore/css/values/color/CSSColorMixResolver.cpp
    M Source/WebCore/css/values/color/CSSRelativeAlphaColorResolver.cpp

  Log Message:
  -----------
  Force modern / extended type serialization when using relative alpha() colors
https://bugs.webkit.org/show_bug.cgi?id=325175

Reviewed by Tim Nguyen.

As with color-mix() and other relative color expressions, relative alpha()
color expressions results should be in the most precise form.

Also does a tiny micro-optimization in the color-mix() resolver to compute
the flags outside the type switch to avoid duplicating that code.

* 
LayoutTests/imported/w3c/web-platform-tests/css/css-color/parsing/alpha-color-computed-expected.txt:
* Source/WebCore/css/values/color/CSSColorMixResolver.cpp:
* Source/WebCore/css/values/color/CSSRelativeAlphaColorResolver.cpp:

Canonical link: https://commits.webkit.org/321829@main



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