[Webkit-unassigned] [Bug 258310] New: Update handling of negative std.dev for feGaussianblur/feDropShadow

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=258310

            Bug ID: 258310
           Summary: Update handling of negative std.dev for
                    feGaussianblur/feDropShadow
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Keywords: BrowserCompat
          Severity: Normal
          Priority: P2
         Component: SVG
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ahmad.saleem792 at gmail.com
                CC: sabouhallawa at apple.com, simon.fraser at apple.com,
                    zimmermann at kde.org

Hi Team,

I came across another failing test compared to Chrome Canary 116 in Safari Technology Preview 172 (though matching Firefox Nightly 116).

Blink Commit: https://src.chromium.org/viewvc/blink?view=revision&revision=202643

Test Case: https://jsfiddle.net/t4ewy9z0/ (feGaussianBlur-negative-deviation.svg) & https://jsfiddle.net/6rx1t3ek/ (feDropShadow-negative-deviation.svg)

It seems that spec changed and our current behavior is similar to Firefox Nightly but Blink aligned with web-spec.

We already have these tests because of change in 2013 by David (pre-blink fork).

Web-Spec: https://drafts.fxtf.org/filter-effects/#element-attrdef-fegaussianblur-stddeviation

_______________

@Simon & @Said - any input, I am happy to do PR to fix it.

Thanks!

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