RESOLVED CONFIGURATION CHANGED 191939
*-opacity computed values should clamp between 0 and 1 
https://bugs.webkit.org/show_bug.cgi?id=191939
Summary *-opacity computed values should clamp between 0 and 1
Eric Willigers
Reported 2018-11-24 01:56:17 PST
When the specified value is outside the range [0,1], Blink and Safari are currently not clamping the computed value of fill-opacity, flood-opacity, stop-opacity, stroke-opacity. Edge and Firefox (and spec) are clamping the computed value to [0,1] https://svgwg.org/svg2-draft/painting.html#FillOpacity https://svgwg.org/svg2-draft/painting.html#StrokeOpacity https://drafts.fxtf.org/filter-effects/#FloodOpacityProperty Computed value: the specified value converted to a number, clamped to the range [0,1] https://svgwg.org/svg2-draft/single-page.html#pservers-StopOpacityProperty Any values outside the range 0.0 (fully transparent) to 1.0 (fully opaque) must be clamped to this range. Blink bug: https://bugs.chromium.org/p/chromium/issues/detail?id=908058 All browsers are clamping the computed value of opacity and shape-image-threshold. http://jsfiddle.net/ericwilligers/zmgy8735/ (Blink and Safari and Firefox have different behavior when animating: https://github.com/w3c/csswg-drafts/issues/3340 )
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Add attachment proposed patch, testcase, etc.
Eric Willigers
Comment 1 2019-01-21 03:04:22 PST
Blink (like Edge and Firefox) now clamps the computed value of *-opacity https://wpt.fyi/results/svg/painting/parsing/stroke-opacity-computed.svg
Radar WebKit Bug Importer
Comment 2 2019-01-22 10:10:49 PST
<rdar://problem/47449828>
Ahmad Saleem
Comment 3 2022-06-20 16:15:59 PDT
Based on attached "JSFiddle" in Comment 01, Safari 15.5 only differs on shape-image-threshold from other browsers (Chrome Canary 105 and Firefox Nightly 103). For all other tests, it is now consistent with other browsers. I think separate bug can be raised for "shape-image-threshold" issue but I will leave it up to others to decide. Thanks!
Ahmad Saleem
Comment 5 2023-12-06 14:46:42 PST
closing this and raising new for 'shape-image-threshold'. Look into 'See Also'.
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