[Webkit-unassigned] [Bug 202459] New: [GTK][WPE] imported/w3c/web-platform-tests/2dcontext/compositing/2d.composite.globalAlpha.canvascopy fails

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=202459

            Bug ID: 202459
           Summary: [GTK][WPE]
                    imported/w3c/web-platform-tests/2dcontext/compositing/
                    2d.composite.globalAlpha.canvascopy fails
           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: clord at igalia.com
                CC: dino at apple.com
        Depends on: 179191

This test fails, presumably with a Cairo-backed 2d canvas:

FAIL Canvas test: 2d.composite.globalAlpha.canvascopy assert_approx_equals: Red channel of the pixel at (50, 25) expected 0 +/- 2 but got 125

This test is testing the 'copy' globalCompositeOperation.


Referenced Bugs:

https://bugs.webkit.org/show_bug.cgi?id=179191
[Bug 179191] Import OffscreenCanvas Web Platform Tests
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