Canvas clip problems

[Scott Palmer]

This looks like it may be related to the clipping issue that I'm having
(the one that forces me o use the software pipeline in JavaFX 8 or the j2d
pipeline in JavaX 2.2)

https://javafx-jira.kenai.com/browse/RT-30591

I'll try to do the same screencast thingy, as the still in my report don't
do justice to the problem.

Scott


On Sat, Jun 1, 2013 at 8:55 PM, Richard Bair <richard.bair at oracle.com>wrote:

> "Cheese" (the smear) should never be possible. It means that the clip used
> on the device is wrong for some reason, and therefore some area of the
> screen was not being repainted that needed to be. In Swing (or Android or
> any other immediate mode API) it is possible that your app could have a bug
> that causes this, but with the scene graph the responsibility is with JFX
> not to mess up the dirty regions.
>
> My guess is this is related to the other issue you already filed about the
> "z order" rendering issue (which is also related to the clip being wrong).
> It might be worth putting the link to the screencast on that bug report.
>
> Richard
>
> On Jun 1, 2013, at 3:21 PM, Daniel Zwolenski <zonski at gmail.com> wrote:
>
> > Here is one I can't reproduce in smaller code.
> >
> > http://www.screencast.com/t/AJZjx1TjFT
> >
> > You can see that when the enemies start off the canvas they end up
> leaving
> > a smear behind. When they leave the canvas at the other end they also
> > smear.
> >
> > I suspect it's something to do with the clipping code used in the game
> but
> > I haven't been able to narrow it down (and this area I was a bit flaky on
> > and I think Richard did the starting setup for).
> >
> > It's probably a case of clipping properly, but should this sort of
> > behaviour be even possible to occur?
> >
> > p.s. thanks for the Camtasia tips - nice product.
>
>