[Interest] [QGV] Asynchronous painting of millions QGPathItem

[william.crocker at analog.com]

>
> My approach so far is a choice based on lod, from low to high:
>
> - draw nothing

I would despise a system where repeated zoom-outs
eventually resulted in "draw nothing". If you draw
nothing then I am lead to believe that there is
nothing there.

> - draw the bounding rect
> - draw the rectangles decomposition
> - draw the polygon decomposition
> - draw the real path
>