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[Bug 11263] Most browsers seem to clear to transparent -white- by default, since this results in much nicer blended edges in antialiased-graphics.

From: <bugzilla@jessica.w3.org>
Date: Fri, 21 Jan 2011 02:31:25 +0000
To: public-html-bugzilla@w3.org
Message-Id: <E1Pg6mb-0000aA-SX@jessica.w3.org>
http://www.w3.org/Bugs/Public/show_bug.cgi?id=11263

--- Comment #3 from Philip Taylor <excors@gmail.com> 2011-01-21 02:31:25 UTC ---
Most browsers use premultiplied alpha so transparent white and transparent
black both get encoded as (0,0,0,0) which gets decoded into rgba(0,0,0,0) -
they can never distinctly represent transparent white. It shouldn't affect
correctly-implemented antialiasing either way, anyway. I guess it's most likely
that the original reporter was confused.

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