On Thu, Jun 08, 2006 at 09:17:49AM +0200, Peter Kümmel wrote: > I'm not proposing such a patch ATM, I'm only interested in the > costs of such an additional virtual call.
Not noticable. It's one more indirection. Just step through the n x 1000 instrucion Qt needs to draw a single point and you'll see that you won't have the slightest chance to produce a measurable difference. There are situations when avoiding virtual calls improves things, but this is usally only within very tight loops as e.g. bytecode interpreters or such. Andre'
