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RE: [css3-background] vastly different takes on "blur"

From: Brian Manthos <brianman@microsoft.com>
Date: Fri, 11 Jun 2010 23:58:34 +0000
To: Brad Kemper <brad.kemper@gmail.com>, Simon Fraser <smfr@me.com>
CC: fantasai <fantasai.lists@inkedblade.net>, "L. David Baron" <dbaron@dbaron.org>, "www-style@w3.org" <www-style@w3.org>
Message-ID: <FA122FEC823D524CB516E4E0374D9DCF0151F046@TK5EX14MBXC136.redmond.corp.microsoft.com>
Testability question.

As we converge on the final language, can we make sure that it expresses where -- regardless of specifics of blur algorithm -- a test harness could check for fully transparent or fully opaque pixels?

What I mean is that there should be a no-man's-land beyond the edge of the specified blur region where no blurred pixels should be found.

My impression is that the intentional flexibility in the specification is (a) about how the blur ramps up / down -- linear, exponential, etc. -- and the impact of neighboring pixels and (b) NOT about allowing the blur to bleed off to infinity or to shrink to barely perceptible.

- Brian
Received on Friday, 11 June 2010 23:59:12 UTC

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