SVG-as-background-image is blurrier than SVG-as-image - as noted in http://benfrain.com/svg-backgrounds-dont-zoom-correctly-in-internet-explorer-10/ and http://codepen.io/benfrain/full/ABkiF

External Issue #106910

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Created
Apr 27, 2014
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This issue is public.
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Steps to reproduce

  1. Open http://codepen.io/benfrain/full/ABkiF

Expected: Both SVG images are similar clarity
Actual: Top SVG image is blurry

Read http://benfrain.com/svg-backgrounds-dont-zoom-correctly-in-internet-explorer-10/ for a full rundown. This is still a bug in IE11.

From: Steve Becker
Sent: Wednesday, February 26, 2014 8:08 PM
To: Erik Anderson; Kurt Catti-Schmidt (SCHMIDT)
Subject: RE: SVG backgrounds and optical zoom

We should open a new bug. This is “by design,” but I think we could do better. There are many cases where IE rasterizes SVG content. This has become a real problem with multithreaded rendering. It takes up to 3 paints to rasterize SVG content. This causes flicker and prevents animation.

Instead of rasterizing a bitmap, we should treat these scenarios like a special case of the use element. This solution should fix this issue, eliminate the multi-paint requirement, and also fix the following similar bugs:

591262 SVG Backgrounds results in 2 rasterizations rather than 1
142449 Nested SVG filters produce an incorrect result
18626 SVG Filter output clipped when source primitive is not in the viewport.

Of course, this would require a considerable amount of investment.

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    Comments and activity

    • Microsoft Edge Team

      Changed Assigned To to “Kevin B.”

      Changed Assigned To from “Kevin B.” to “Kurt C.”

      Changed Status to “External”

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