QML Rendering Engine: frame refresh event

Question

Performance Considerations And Suggestions article says:

As an application developer, you must strive to allow the rendering engine to achieve a consistent 60 frames-per-second refresh rate. 60 FPS means that there is approximately 16 milliseconds between each frame in which processing can be done, which includes the processing required to upload the draw primitives to the graphics hardware.

Is there an event or signal or any form of callback to make the code be called with that refresh?

The goal is to eliminate the need for handling the signal from the rendering thread in the UI thread slot. If the new data arrived then it will be drawn or marked for the next refresh to be drawn (with update() call).

Answer 1

QQuickWindow has a bunch of signals for the purpose of synchronization - beforeRendering(), afterRendering(), beforeSynchronizing(), afterSynchronizing(), frameSwapped(). Take your pick.