[Webkit-unassigned] [Bug 280894] New: With globalAlpha set, the canvas shadow filter should be visible through the transparent foreground.

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Fri Oct 4 09:45:51 PDT 2024


https://bugs.webkit.org/show_bug.cgi?id=280894

            Bug ID: 280894
           Summary: With globalAlpha set, the canvas shadow filter should
                    be visible through the transparent foreground.
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Canvas
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: sabouhallawa at apple.com
                CC: sabouhallawa at apple.com

Created attachment 472810

  --> https://bugs.webkit.org/attachment.cgi?id=472810&action=review

test case

Reference: https://github.com/whatwg/html/pull/10674

1. Make sure the experimental feature `Canvas Filters is enabled
2. Open the attached test case

Result: The filtered rectangle is opaque relative to its shadow.
Expected: The shadow filter should be visible through the transparent foreground.

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