forgot a word...
was: "gap is NOT modified"

On Feb 9, 10:24 pm, Philippe <[email protected]> wrote:
> you are right for -2-
> Actually, in my real code, gap is modified by on_mouse_press or
> on_key_press (only by the other thread).
> That was juste for the sample.
> I should have put a lock() to be cleaner.
>
> On Feb 9, 9:33 pm, claudio canepa <[email protected]> wrote:
>
>
>
>
>
>
>
> > On Thu, Feb 9, 2012 at 6:22 AM, Philippe <[email protected]> wrote:
> > > Hello again ..
>
> > > I have an issue with the update of my sprites.
> > > I pasted a small sample that reproduce my problem here:
> > >http://pastebin.com/KrajS6RX
>
> > > I set 3 ways of changing the mask of my_sprite.
>
> > > 1- user can click on the sripte, it reduce the mask width => it works
> > > well
>
> > > 2- user can press a key on the Layer, the layer use a
> > > pyglet.event.EventDispatcher to push an event, my_sprite receive it =>
> > > it works well too !
>
> > > 3- I go a thread, in my pyglet.event.EventDispatcher that push an
> > > event every 5s. my_sprite receive it, but does not update itself in
> > > the window.
> > > I tried to add the self.draw() instruction, but got an error:
> > > GLException: invalid operation
>
> > > Any idea ?
> > > If I move the mouse over the window, I got clean refresh, even for
> > > -3-. I would like to have the same, but without moving the mouse
> > > around!
>
> > > thanks
>
> > I don't really know about threads, but
>
> > 1. I remember some comments in the line 'calls to openGL must be done from
> > the same thread that acquired the openGL context'. So I don't expect that
> > ultimately calling to .draw from other thread can work
>
> > 2. Maybe is an artifact from your sample, but you are modifying self.gap
> > from two different threads. That will explode at some time, when one thread
> > is amidst of changing gap, the other thread kicks in and also tries to
> > change gap
>
> > 3. Usually code that can be called from multiple threads is explicitly
> > announced as multithread safe ; I don't remember any such comments in the
> > pyglet event docs.
>
> > 4. Perhaps some of the posts here:
>
> >http://search.gmane.org/search.php?group=gmane.comp.python.pyglet.use...
>
> > may help you
>
> > 5. Out of curiosity, what is your real use case for threading with pyglet ?
> > Are you sure you are not killing flies with missiles ?
>
> > --
> > claudio

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