I can validate the problem. For me it happens only(!) during the ColorAnimations. If I either comment those, or set the RadialGradient visible: false the "stuttering" is gone.
It's not stuttering with Rectangle The Qt build is a checkout from this week on 64bit ArchLinux (updated this week) and qtgraphicaleffects are up-to-date from today. Greets Thomas On Fri, October 19, 2012 10:44:04 AM Jarno Seppänen wrote: > I tested on two more machines with Nvidia graphics, can reproduce the > flicker on both: Ubuntu 12.10 with Asus GT520 running Qt5 beta 1, > other with Ubuntu 12.04 and Quadro FX 3800 running Qt5 master branch > from Oct 14th. The previous machines I tested with had Intel graphics > (Poulsbo and GMA4500MHD). > > The flicker disappears if "Sync to VBlank" is turned off from OpenGL > Settings in nvidia settings panel (but other problems appear, > obviously). > > Jarno > > On Thu, Oct 18, 2012 at 10:10 PM, Jarno Seppänen <[email protected]> wrote: > > hi, > > > > On Mon, Oct 15, 2012 at 11:29 AM, Samuel Rødal <[email protected]> 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. > > > > Example with text flicker: > > > > import QtQuick 2.0 > > import QtGraphicalEffects 1.0 > > > > FocusScope { > > > > id:screen > > > > SequentialAnimation { > > > > loops: Animation.Infinite; running: true > > PauseAnimation { duration: 1000 } > > ColorAnimation { target: glow; property: "color"; to: "navy"; > > > > duration: 1000; easing.type: Easing.InOutQuad } > > > > PauseAnimation { duration: 1000 } > > ColorAnimation { target: glow; property: "color"; to: "blue"; > > > > duration: 1000; easing.type: Easing.InOutQuad } > > > > } > > > > RadialGradient { > > > > gradient: Gradient { > > > > GradientStop { id: glow; position: 0.0; color: "blue" } > > GradientStop { position: .7; color: "blue" } > > > > } > > anchors.fill: parent > > > > } > > > > Text { > > > > id:txt > > width:600 > > color:"white" > > text: "Lorem ipsum dolor sit amet, consectetur adipisicing > > > > elit, sed do eiusmod tempor incididunt ut labore et dolore magna > > aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco > > laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor > > in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla > > pariatur. Excepteur sint occaecat cupidatat non proident, sunt in > > culpa qui officia deserunt mollit anim id est laborum." > > > > font.weight:Text.Bold > > font.pointSize:30 > > wrapMode: Text.Wrap > > NumberAnimation on y { > > > > from:-txt.contentHeight > > to:txt.contentHeight+500 > > loops:-1 > > duration:6000 > > > > } > > anchors.horizontalCenter:parent.horizontalCenter > > > > } > > > > } > > > > Jarno > > _______________________________________________ > Interest mailing list > [email protected] > http://lists.qt-project.org/mailman/listinfo/interest _______________________________________________ Interest mailing list [email protected] http://lists.qt-project.org/mailman/listinfo/interest
