krita overview

[Patrick Julien]

On October 13, 2003 07:36 am, Michael Thaler wrote:
> Hi,
>
> > Well, I did experiment with that, and if you look at the kis_tool_test.cc
> > I sent you (I did attach that file, didn't I?), you'll see that I try to
> > invalidate only the rect that's painted. When I added that, instead of
> > invalidating the whole image, flicker decreased visibly, so I thought
> > repainting only part of the canvas was already supported.
>
> Really? If you do a 'grep -R dirty *' on the source you see that is
> isn't actually unsed anywhere. But, then, I did not have time to
> read carefully the source of KisDoc and KisView.

Because I don't actually tiles directly, and I never use data members of class 
directly, I always use methods.

>
> But on the other hand, invalidate is set correctly by
>
> kpainter. Patrick yesterday said:
> > The dirty flag was meant for actual rendering, the valid flag meant
>
> that the
>
> > tile pointed to valid memory, i.e. memory that is still in-core.
>
> But maybe this is not true and validate/invalidate is used for actual
> rendering and dirty for swapping the tiles/memory management?