[Webkit-unassigned] [Bug 50543] New: Problems with filter attribute and SMIL

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=50543

           Summary: Problems with filter attribute and SMIL
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
               URL: http://svg.kvalitne.cz/fancymenu/fancymenu.svg
        OS/Version: Windows XP
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: SVG
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: marek.raida at gmail.com
                CC: zimmermann at kde.org


Happens in latest Chrome public stable build (8.0.552.215).
There are two bugs actually. 
One is, that it is not possible to "unset" already applied filter to some element, setting its value to empty string "" nor "none" (which is according to spec possible) does not help.
However, more serious problem is in my opinion this:
if there is applied filter effect to some element and at the same time there is set SMIL animation affecting the same filter attribute, filter is not initially applied, although it should be.
To be more explicit, this case doesn't work:

<g filter="url(#glow)">
  <set attributeName="filter" to="url(#glow)" begin="butGlowOn.click"/>
  ...
</g>

but this one does

<g filter="url(#glow)">
  <set attributeName="filter" to="url(#glow)" begin="butGlowOn.click"/>
  ...
</g>

It would be great to have it fixed...

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