More info,
This migh be ovious, but:
I have found out that if I don't modify any of the layers while
dragging a window about - then things stay very stable and look good.
Probably no great surprise. But as soon as I change the colour of a
line for example, flickering occurs like mad.
I
Hi
I've created a borderless NSWindow that is used to draw a grid (via
CALayer instances - each line is a CALayer instance). The window is
shown at the Screen Saver window level, thus overlapping everything.
In my tests there are 3 or 4 lines in either direction, i.e. we're not
talking
