RE: [AD] crash 16bit fullscreen mode

[aj <aj@xxxxxxxxxx>]

> Someone should search the [AD] archives. I pointed this problem out
> several years ago. Don't remember where it ended though.


i found some talk about it back in late October 2002.


eric suggested this:

> Crashes seem to depend on the size and orientation of desktop windows
> being switched to by releasing Alt+Tab (larger windows cause crash )

Edit the allegro.cfg file and put:

    disable_direct_updating = yes

in the [graphics] section.

Then make sure this allegro.cfg is visible from your program (put it in the
same directory or use the ALLEGRO variable, see the docs) and retry.





can you tell me if this would still help ?






> > > i have a theory...
> > > >
> > > > i think i have found a race condition where the graphics driver
> may be
> > > > drawing to a surface it no longer has locked, due to alt-tabing
> away









> > from
> > > > the app.   is that possible ?
> > > > could it be that during the alt-tab away, the screen bitmap is
> lost
> > and
> > > > attempting to draw on it causes a crash ?
> > > > this problem has only been reported to me by some users that claim
> its
> > a
> > > > recent bug, so maybe its a change that occured between 4.1.15 and
> > 4.1.16 ?
> > > >
> > >
> > >Hm, so it isn't always reproducible? Sounds like a race condition
> > >indeed.
> >
> >
> > it is re-producible.
> > it doesn't crash in debug builds, just release build :(
> > so tracking it down is really hard.
> > i've started a thread on a.cc about it also, that i will continually
> > update
> > in the hope that others have some evidence too, that might lead to a
> fix.
> >
> > please read the a.cc thread for additional info..
> > http://www.allegro.cc/forums/view_thread.php?_id=429489
> >