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  1. Qt
  2. QTBUG-43811

QML animation running too fast on Windows 7

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Details

    Description

      Consider the following simple example:

      import QtQuick 2.0

Rectangle {
    id: root
    width: 800
    height: 600
    color: "black"
    focus: true

    Rectangle {
        id: rect
        width: 150
        height: parent.height
	color: "seagreen"
        visible: animation.running

        NumberAnimation on x {
            id: animation
            from: -rect.width
            to: root.width
            loops: Animation.Infinite
            duration: 4000
            running: false
        }
    }

    Keys.onSpacePressed: animation.running = true
}

      The speed of green bar is incosistent when switching between different versions of Qt on Windows 7 (x64). The speed is equal and as expected for versions 5.1.1, 5.2.1, and 5.3. Alas, on 5.4 animation is running approximately 2 times faster than desired.

      No such behaviour for Mac OS X 10.10, and Ubuntu 12.02 (verified for the same list of Qt versions).

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          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-67249 QML Timer with Animation still running too fast on Windows

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-70297 Qml animations are too fast in Release builds (ok in Debug)

          • Not Evaluated - Not yet evaluated/prioritized
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-45959 QtQuick Animation timing too fast on Linux nvidia optimus systems

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Closed
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              sletta Gunnar Sletta
              dvolosnykh Dmitry Volosnykh
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              Dates

                Created:
                Updated:
                Resolved:

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