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  1. Qt
  2. QTBUG-37586

QML Animations are less smooth with 5.3.0-beta than with 5.2.1 (on low-spec Android devices)

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    • Platform/s:
      Android
    • Commits:
      84c8e4717c70f0f214f84a5c9430dcc024bf2e8b

      Description

      tl;dr: Qt 5.3.0-beta on Android uses non-threaded rendering loop, which can result in un-smooth animations. The fix for that has been commited for 5.3.0. In order to get the threaded rendering loop with Qt 5.3.0-beta, write qputenv("QML_FORCE_THREADED_RENDERER", "1"); in the beginning of your main() function.

      QML Animations are less smooth with 5.3.0-beta than with 5.2.1 (on low-spec Android devices). They visibly stutter.

      This is just my first observation, I know that it is not that helpful. I will try to narrow this down.

      Anyway, in order to reproduce this, check out https://github.com/aportale/qtouchandlearn and run it on a low-spec Android device (press a few correct answers in the game). Qt 5.2.1 creates more fluid animations than 5.3.0.

      The device I tested this with is a http://en.wikipedia.org/wiki/Samsung_Galaxy_S , which so far was a good target for Qt apps.

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            Assignee:
            esabraha Eskil Abrahamsen Blomfeldt
            Reporter:
            portale Alessandro Portale
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              Resolved:

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