dirkschulze has just created a new issue for https://github.com/w3c/fxtf-drafts: == [filter-effect] The filter region clipping == Moving following issue from @RazrFalcon at https://github.com/w3c/svgwg/issues/587 here: Hi! I'm writing an SVG rendering library ([resvg](https://github.com/RazrFalcon/resvg)) and since SVG doesn't have a reference implantation, it's often hard to understand what the correct result should be and I'm not sure where can I ask about it. So I'm trying it here with a filters related question. In the SVG 1.1 Full spec at [15.5 Filter effects region](https://www.w3.org/TR/SVG11/filters.html#FilterEffectsRegion), it states that: >The bounds of this rectangle act as a hard clipping region The problem is that I can't understand how exactly it should work. And to make things worst - everyone does this differently: 1. Original ```xml <svg id="svg1" width="500" height="500" viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg"> <rect x="50" y="1" width="100" height="198" fill="none" stroke="black"/> <!-- inkscape doesn't support userSpaceOnUse for filter --> <filter id="filter1" x="0.185"> <feGaussianBlur stdDeviation="4" width="100"/> </filter> <circle id="circle1" cx="100" cy="100" r="80" fill="green" filter="url(#filter1)"/> <!-- image frame --> <rect id="frame" x="1" y="1" width="198" height="198" fill="none" stroke="black"/> </svg> ``` 2. Chromium r599821  3. Firefox 63.0.1  4. Inkscape 0.92.2  5. librsvg 2.44.8  6. Batik 1.9  And even thought Chrome, librsvg and Batik looks similar they actually have a bit different padding. What is the correct result? Please view or discuss this issue at https://github.com/w3c/fxtf-drafts/issues/321 using your GitHub accountReceived on Sunday, 11 November 2018 20:02:05 UTC
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