[Interest] [QGV] Asynchronous painting of millions QGPathItem

[Ulf Hermann]

Hello,

I had a somewhat similar, but not quite the same problem when building the timeline view for the QML profiler in Qt Creator. It's currently usable with up to about 1 million events in the timeline and you can zoom and scroll it. There might be potential for further optimization. I used the Qt Quick SceneGraph API to directly work with OpenGL geometry. The scene graph nodes are built on demand and then cached and recycled when applicable. You can check out the result in the Qt Creator sources in src/libs/timeline.

br,
Ulf