[Webkit-unassigned] [Bug 26380] SVG Filters and big sized filterRegions

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=26380





--- Comment #19 from Dirk Schulze <krit at webkit.org>  2009-11-10 11:11:59 PDT ---
(In reply to comment #18)
> (From update of attachment 42876 [details])
> But is this rect in the same coordinate system as the rest of the filter rects?
> What if the filter is on a child of a transformed element?
Yes, it's the same coordinate space. I tested it on the W3C test suite, where
SVG is embeded to html.
We already use this on pattern and others via clampImageBufferSizeToViewport.

> This isn't going to do the right thing for filtered SVG inside a HTML with CSS
> 3D transforms; element content that is outside the viewport can be made visible
> with a rotateY(), for example. And, yes the visible filtered content may be
> arbitrarily large in that case.
I don't like the idea of activating css transforms for SVG. What happens if we
transform an SVG element with <animation>, JS and CSS transform (2D or 3D)?

> I question the need for these methods, but if you do have them, then viewPort()
> should be const.
Ok, viewPort() is not needed atm. setViewPort is needed to get the viewPort in
SVGResourceFilter from SVGFilterElement.

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