Okay, I found the problem :
I just have to make and set a new graphic context on each new
osgViewer::View
Sorry for the inconvenience.
I just allow myself to a last question : Now, When I have two windows/View,
the focus is given with a simple mouse fly over (without clicking).
This can really become a problem... I don't think this is an OSG basic
behavior, but I anyone have an idea about that... it can help me.
Thanks for help,
Regards,
Vincent
2008/11/18 Vincent Bourdier <[EMAIL PROTECTED]>
> Hi Robert,
>
> What I don't understand is why I get this error one time and not the
> previous... the code is exactly the same.
>
> int addWindow(bool buildscene)
>> {
>> osg::ref_ptr<osgViewer::View> view = new osgViewer::View;
>>
>> compViewer->addView( view.get() );
>> view->setUpViewInWindow( 10, 200, 440, 380 );
>> if(buildscene){ //true the first time only
>> _root = new osg::Group;
>> buildScene();
>> }
>> view->setSceneData( _root.get());
>> view->setCameraManipulator( new osgGA::TrackballManipulator );
>> }
>>
>
> In the main() : before launching the loop
>
> // construct the viewer.
>> compViewer = new osgViewer::CompositeViewer;
>>
>> compViewer->setThreadingModel(osgViewer::Viewer::DrawThreadPerContext);
>>
>> addWindow(true); //create the first one with building the scene
>> addWindow(true); //add a view : this call do not make problems
>>
>
> In the loop :
>
> while (!compViewer->done() && !masterKilled) {
>> if (!masterKilled) {
>> compViewer->frame();
>> test++;
>> if(test == 200){
>> addWindow(false); //this call crash with OpenGl
>> }
>>
>> }
>>
>
> I'm lost... with the context can have changed ? How to verify it ? create
> it ?
>
> thanks.
>
> Regards,
> Vincent.
>
>
> 2008/11/18 Robert Osfield <[EMAIL PROTECTED]>
>
> Hi Vincent,
>>
>> You make no mention of where you call osg::getGLVersionNumber(), but
>> given you're getting a crash I'd guess you are calling it from a
>> thread that doesn't have a graphics context current. All OpenGL calls
>> have to be called from a thread with a valid graphics context. There
>> has been plenty discussed about this on osg-uses over the years so
>> check out the archives on the topic.
>>
>> Robert.
>>
>> On Tue, Nov 18, 2008 at 1:20 PM, Vincent Bourdier
>> <[EMAIL PROTECTED]> wrote:
>> > Hi all,
>> >
>> > Using composite viewer, I have a strange behavior :
>> >
>> > If, during the build of my scene, I make 1, 2... osgViewer::view in the
>> same
>> > composite viewer, everything is godd and work well.
>> >
>> > But, if during the render loop (after 200 frame() ) I had one View, with
>> the
>> > same code of the previous, I have a crash in getGLVersionNumber :
>> > (glextensions.cpp)
>> >
>> > float osg::getGLVersionNumber()
>> > {
>> > // needs to be extended to do proper things with subversions like
>> 1.5.1,
>> > etc.
>> > char *versionstring = (char*) glGetString( GL_VERSION ); //HERE
>> > void char* on the last View, but not on the previous one(s)...
>> > std::string vs( versionstring );
>> > return( atof( vs.substr( 0, vs.find( " " ) ).c_str() ) );
>> > }
>> >
>> >
>> >
>> > I does not make any sense for me... the GL_VERSION is defined, so what
>> > happens ?
>> >
>> > Any Idea ?
>> >
>> > Thanks.
>> >
>> > Regards,
>> > Vincent.
>> >
>> >
>> >
>> >
>> > _______________________________________________
>> > osg-users mailing list
>> > osg-users@lists.openscenegraph.org
>> >
>> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
>> >
>> >
>> _______________________________________________
>> osg-users mailing list
>> osg-users@lists.openscenegraph.org
>> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
>>
>
>
_______________________________________________
osg-users mailing list
osg-users@lists.openscenegraph.org
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
