[Interest] QML animation flicker

Samuel Rødal samuel.rodal at digia.com
Fri Oct 19 09:43:32 CEST 2012

On 10/18/2012 09:10 PM, Jarno Seppänen wrote:
> hi,
> On Mon, Oct 15, 2012 at 11:29 AM, Samuel Rødal <samuel.rodal at digia.com> wrote:
>> On 10/12/2012 11:10 PM, Jarno Seppänen wrote:
>>> Hi,
>>> I'm trying out Qt 5.0.0-beta1, but I'm seeing some unexpected
>>> animation flicker. I have a rotating rectangle which starts to flicker
>>> during a simultaneous ColorAnimation, without it the rotation is
>>> smooth. Is this an issue with my setup and should I change my QML code
>>> somehow? I've gotten similar results on two Ubuntu laptops, running
>>> 11.04 and 12.04.
>> Hmm, I was not able to reproduce this with a recent build of Qt 5. What
>> kind of flicker are you talking about?
> The animation movement jerks back and forth very fast, as if every two
> frames were being displayed in swapped order. The effect is especially
> disturbing on scrolling text. I tried to capture a video of the
> flicker, but it seems that the screen recording software does
> something that makes the problem disappear. I also noticed that the
> flicker is much diminished if I run qmlscene in a window, running qml
> --fullscreen gives "best" flicker.

What happens if you exchange the RadialGradient for an Image or 
Rectangle or similar?


More information about the Interest mailing list