[PATCH] mi: removed the invisible cursor sprite; use NullCursor instead.

[Oliver McFadden]

On Tue, 2010-05-18 at 08:34 +0200, ext Keith Packard wrote:
> On Tue, 18 May 2010 08:44:27 +0300, Oliver McFadden <oliver.mcfadden at nokia.com> wrote:
> 
> > I suppose for HW cursor it doesn't really matter since we wouldn't take
> > damage on that, right? We just draw everything normally, then tell the
> > HW to draw a sprite at X,Y? (Again, haven't looked at HW cursor code so
> > perhaps I'm totally off the mark.)
> 
> Right, there won't be damage, the question is whether I can remove the
> empty invisible cursor safely now, or whether drivers are all going to
> explode when presented with a NULL cursor.

Right, this is a good question. I didn't think of this.

hw/xfree86/modes/xf86Cursors.c seems to be doing NULL checking on the
cursor from my quick read-through, but whether every case is NULL
checked... I do not know.

I can look into applying the patch on my laptop and checking with the
radeonhd driver, but if someone else wants to test also please feel
free.