[Webkit-unassigned] [Bug 54297] position fixed element does not render properly when dynamically updated via javascript
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Thu Mar 24 15:29:03 PDT 2011
https://bugs.webkit.org/show_bug.cgi?id=54297
--- Comment #16 from Benjamin Poulain <benjamin at webkit.org> 2011-03-24 15:29:02 PST ---
(From update of attachment 84486)
View in context: https://bugs.webkit.org/attachment.cgi?id=84486&action=review
> LayoutTests/fast/repaint/transformed-contents-changed-after-scroll.html:27
> + <div style="-webkit-transform: rotateX(360deg); position:fixed; top: 70px; left: 10px;">
> + <div id="target1" style="width: 100px; position: fixed; top: 0px; left: 0px; border: 1px solid black; text-align: center;">FAIL</div>
> + </div>
> + <div style="-webkit-transform: rotateX(360deg); position:relative; top: 262px; left: 130px;">
For the test coverage, especially of repaint issue, rotateX(360) is not a very interesting transform.
Translate can be more useful (sometimes showing the repaint rect is not translate). Rotation of a small number can be interesting but it usually create larger update region which can hide problems.
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