[Webkit-unassigned] [Bug 228771] New: [GTK][WPE] Elliptic radial gradients are not working

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Wed Aug 4 04:56:05 PDT 2021


            Bug ID: 228771
           Summary: [GTK][WPE] Elliptic radial gradients are not working
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKitGTK
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: magomez at igalia.com
                CC: bugs-noreply at webkitgtk.org

There are some examples in this page that show the problem: https://people.igalia.com/magomez/gradient/index.html
All of the rendered gradients are circular while some of them should be elliptic.

The problem here is that we use cairo_pattern_create_radial() to create the gradients, and that doesn't support elliptic gradients. We need to do some transformation matrix magic in order to achieve the elliptic result.

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