[Bug 10647] shadowBlur should be linear throughout rather than changing to sqrt() above 8px

http://www.w3.org/Bugs/Public/show_bug.cgi?id=10647

Aryeh Gregor <Simetrical+w3cbug@gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |Simetrical+w3cbug@gmail.com

--- Comment #3 from Aryeh Gregor <Simetrical+w3cbug@gmail.com> 2010-09-29 18:57:04 UTC ---
(In reply to comment #0)
> This is bizarre behavior that's emulation of a bug in Safari for Mac.  It
> doesn't seem present in Chromium for Linux, and until very recently the
> implementation of it in Gecko was actually wrong by a factor of sqrt(2) for the
> >8px case because the *2 inside the sqrt() was missing.  No Gecko bugs were
> filed about this difference; I only noticed because I was changing our blur
> code to conform to css3-background.

FWIW, there was a bug filed about this:

https://bugzilla.mozilla.org/show_bug.cgi?id=578995

This change makes a lot of sense, though.  Actually, I already suggested it in
bug 10169, but I'm not an implementer, so it didn't get anywhere.  (Which is
fine, although I should have prodded implementers about it as I said I would .
. .)

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Received on Wednesday, 29 September 2010 18:57:06 UTC