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Re: [fxtf-drafts] [filter-effects] Require image re-sampling for feDisplacement

From: Amelia Bellamy-Royds via GitHub <sysbot+gh@w3.org>
Date: Tue, 02 Jan 2018 20:34:09 +0000
To: public-fxtf-archive@w3.org
Message-ID: <issue_comment.created-354868536-1514925247-sysbot+gh@w3.org>
@dirkschulze

My suggestion was that `image-rendering` (smooth vs pixelated) would be used for the local scaling effect created by the distortion, and yes that could have performance impacts. So it would mostly only be useful for non-animated images.

In an animated example like the ones linked above, it would effectively indicate whether to compromise rendering smoothness vs refresh rate. Which might not make David happy, but something's got to give.

Personally, I'm happy with keeping it as a non-normative note suggesting that browsers should respect `image-rendering: smooth` if it doesn't compromise performance.  The exact wording of the note could probably be more clear than the current text, though.

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