Concerning the issue I had with my scene data not taken into account I found
the explanation: it came from the fact that I was adding a "slave camera"...
apprently the master scene data is not shared by default is it ?... any way,
if I use this simplyfied code, everything works good:
{
osg::ref_ptr<osg::GraphicsContext::Traits> traits = new
osg::GraphicsContext::Traits;
traits->x = 50;
traits->y = 50;
traits->width = 640;
traits->height = 480;
traits->windowDecoration = true;
traits->doubleBuffer = true;
traits->sharedContext = 0;
traits->supportsResize = true;
osg::ref_ptr<osg::GraphicsContext> gc =
osg::GraphicsContext::createGraphicsContext(traits.get());
osg::ref_ptr<osg::Camera> camera = viewer.getCamera(); // using the
existing camera directly ! :-)
camera->setGraphicsContext(gc.get());
camera->setViewport(new osg::Viewport(0,0, traits->width,
traits->height));
}
Now I will try moving this code to thread 1... as you said it should work
:-)
Manu.
2007/6/5, Emmanuel Roche <[EMAIL PROTECTED]>:
Okay... I made some more tests:
1) Preparing everything in thread 1 and calling realize() here, before
using thread 2 for run() is not a good solution (still not receiving Key_Up
events then !!).
2) Preparing everything in thread 2 and running there works "partially"
(receiving the Key_* events correctly....)... yet, in fact, in thread 1 I
used to prepare everything, and also assign the scene data... if I keep it
like this, nothing is displaying (only a blue screen: this mean at least
that the viewer REALLY HAS a scene data assigned (or run() would return
immediately no ?) )... if I also assign the data in thread 2, everything is
normal... but doing things this way is completely useless since ALL is done
in thread 2, the thread 1 is not used any more and the multi threading
scheme becomes obsolete... :-(... snif !
Could I be needing something like a "mutable" or "volatile" reference to
my viewer object (I not used to those keywords yet sorry lol...) ?
Manu.
2007/6/5, Emmanuel Roche <[EMAIL PROTECTED]>:
>
> In fact I guess this is still linking to the amulti threading issue :
> I'm building by viewer in a Thread n°1 (-> one call to
> createGraphicsContext()), then I call run() in a second thread (--> call
> realize())...
>
> what is the good solution in this situation ? should I prepare
> everything in thread 1, call realize() here and only then call run() or
> frame() in thread 2 ? or should I do everything in thread 2 only ?
>
> I'm still not understanding what's happening :-)...
>
> Manu.
>
>
> 2007/6/5, Emmanuel Roche <[EMAIL PROTECTED] >:
> >
> > Hello there !!
> >
> >
> > I'm playing a bit with this new viewer and noticed a strange behavior
> > :
> >
> > under windows, when I use a default fullscreen viewer I receive all
> > key events normally in a GUIEventHandler I added to my Viewer, but, if I try
> > to build a windowed viewer, adding the following code:
> >
> > {
> > osg::ref_ptr<osg::GraphicsContext::Traits> traits = new
> > osg::GraphicsContext::Traits;
> > traits->x = 50;
> > traits->y = 50;
> > traits->width = 640;
> > traits->height = 480;
> > traits->windowDecoration = true;
> > traits->doubleBuffer = true;
> > traits->sharedContext = 0;
> >
> > osg::ref_ptr<osg::GraphicsContext> gc =
> > osg::GraphicsContext::createGraphicsContext( traits.get());
> >
> >
> > osg::ref_ptr<osg::Camera> camera = new osg::Camera;
> > camera->setGraphicsContext(gc.get());
> > camera->setViewport(new osg::Viewport(0,0, traits->width,
> > traits->height));
> > GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT;
> > camera->setDrawBuffer(buffer);
> > camera->setReadBuffer(buffer);
> >
> > // add this slave camra to the viewer, with a shift left of
> > the projection matrix
> > //viewer.setCamera( camera.get());
> >
> > viewer.addSlave(camera.get(), osg::Matrixd(), osg::Matrixd());
> > viewer.setCameraWithFocus(camera.get());
> > }
> >
> >
> > (taken mainly from osgwindows sample...)
> > then my GUIEventHandler is not receiving the Key_Up, Down , Left and
> > Right events (at least !) any more... :-( (but is still receiving normal
> > ascii keys like 'a' or 'q' for example)... any idea what I'm missing ?
> >
> > Manu.
> >
> >
> >
>
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