QGraphicItem -> No antialiasing

[pl01]

Hi,

I use the QGraphicsView and have a custom QGraphicItem to display some curves. The problem is that I play with the cache mode :

• DeviceCoordinateCache : Very slow with a lot of curves, but with antialiasing
• ItemCoordinateCache: Very slow with a lot of curves, but with antialiasing
• DeviceCoordinateCache : Fast, but without antialiasing !!

I don't know why I have no antialiasing with DeviceCoordinateCache !

Here is the kind of graph I try to display : http://www.spectralpixel.com/images/misc/features_sgraph.png