Open Bug 652397 Opened 9 years ago Updated 9 years ago

[css3-animations] animated transformed element looks very jaggy when absolute positioned

Categories

(Core :: Graphics, defect)

x86
macOS
defect
Not set

Tracking

()

People

(Reporter: phiw2, Unassigned)

References

()

Details

Attachments

(3 files)

Attached file test case
testcase - extracted from David Barons demo: http://dbaron.org/log/20110419-animations

The top box is static (not animated), the spikes are smooth. The bottom box shows heavy jaggies on the spikes when animated, I slowed down the animation to show that the smoothing returns when the element 'settles'.

(hmm, not sure if this is a style system or graphics bug)

Hardware in use is a not-so-new 2.00 Ghz Core 2 Duo iMac with ATI,RadeonHD2400
graphics, OS X 10.6.7. Recent nightly builds.
Similar as previous test case, but without using position absolute for the spikes. The spikes remain smooth during the animation.
Seems like a layers issue.  I don't see this on Linux.
Component: Style System (CSS) → Layout: View Rendering
QA Contact: style-system → layout.view-rendering
Summary: [css3 animations] animated transformed element looks very jaggy when absolute positioned → [css3-animations] animated transformed element looks very jaggy when absolute positioned
Component: Layout: View Rendering → Graphics
No longer depends on: 637852
QA Contact: layout.view-rendering → thebes
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