[fxtf-drafts] [filter-effects-1] Clarify stitchTiles=stitch in feTurbulence (#390)

RazrFalcon has just created a new issue for https://github.com/w3c/fxtf-drafts:

== [filter-effects-1] Clarify stitchTiles=stitch in feTurbulence ==
https://www.w3.org/TR/filter-effects-1/#feTurbulenceElement

Even thought that the algorithm is pretty well described and we have an actual code sample, every application is still producing a different result when `stitchTiles=stitch`.

```xml
<svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg">
    <filter id="filter1">
        <feTurbulence baseFrequency="0.03" stitchTiles="stitch"/>
    </filter>
    <rect id="rect1" x="50" y="50" width="100" height="100" filter="url(#filter1)"/>
    <rect id="frame" x="1" y="1" width="198" height="198" fill="none" stroke="black"/>
</svg>
```

![e-feTurbulence-017](https://user-images.githubusercontent.com/725494/71552821-6cb50c00-2a0c-11ea-8dab-0a91be13fe09.png)

(diff is relative to Chrome)


I'm not sure how everyone was able to misinterpret the spec in their own way, but maybe at least someone was able to produce the right result?

Please view or discuss this issue at https://github.com/w3c/fxtf-drafts/issues/390 using your GitHub account

Received on Sunday, 29 December 2019 05:26:43 UTC