[Webkit-unassigned] [Bug 160661] New: Layering scale to produce blurry results
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Mon Aug 8 09:50:58 PDT 2016
https://bugs.webkit.org/show_bug.cgi?id=160661
Bug ID: 160661
Summary: Layering scale to produce blurry results
Classification: Unclassified
Product: WebKit
Version: WebKit Nightly Build
Hardware: Macintosh
OS: OS X 10.11
Status: NEW
Severity: Normal
Priority: P2
Component: Layout and Rendering
Assignee: webkit-unassigned at lists.webkit.org
Reporter: hello at philippspiess.com
CC: simon.fraser at apple.com
Created attachment 285569
--> https://bugs.webkit.org/attachment.cgi?id=285569&action=review
Blur Bug
We have found a situation, where (sibling) layers are causing the result of a `scale` transform to be blurry. Please have a look at the attached html file.
In the attached file, we used `translate3d` to force a layer. This can also be reproduced when using `position: fixed` instead. We have found out that adding a layer will also force a layer for the next siblings.
We can work around the blur by adding a new parent to the `scale` transform, so that the div containing the `scale` does not use a layer (in this case, the parent holds the layer).
Firefox and Chrome can render the text fine.
This is probably also the cause of https://bugs.webkit.org/show_bug.cgi?id=133801 - but we ran into it just by trying to scale a div.
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