Hi,
when I create two instances of "osgViewer::Viewer" in one program, then
the first viewer freezes (no trackball manipulation possible) when
setting threading model of both viewers to "SingleThreaded". Is that
expected behaviour and why, or is it a bug?
When I'm setting one or both viewer(s) to e.g. "ThreadPerContext", then
both viewers are working properly.
I'm using OSG-Rev. 8402 and OpenSUSE-10.2-64.
Thanks in advance!
Rudi
The following code reproduces the problem:
#include <osg/ref_ptr>
#include <osgDB/ReadFile>
#include <osgViewer/Viewer>
#include <osgGA/TrackballManipulator>
int main( int argc, char * argv[] )
{
// read model
osg::ref_ptr< osg::Node > model = osgDB::readNodeFile( "cow.osg" );
// create viewer #1
osg::ref_ptr< osgViewer::Viewer > viewer1 = new osgViewer::Viewer;
viewer1->setSceneData( model.get() );
viewer1->setUpViewInWindow( 10, 10, 400, 300 );
viewer1->setCameraManipulator( new osgGA::TrackballManipulator() );
viewer1->setThreadingModel( osgViewer::Viewer::SingleThreaded );
// viewer1->setThreadingModel( osgViewer::Viewer::ThreadPerContext );
// create viewer #2
osg::ref_ptr< osgViewer::Viewer > viewer2 = new osgViewer::Viewer;
viewer2->setSceneData( model.get() );
viewer2->setUpViewInWindow( 500, 10, 200, 300 );
viewer2->setCameraManipulator( new osgGA::TrackballManipulator() );
viewer2->setThreadingModel( osgViewer::Viewer::SingleThreaded );
// viewer2->setThreadingModel( osgViewer::Viewer::ThreadPerContext );
// render
while( ( viewer1->done() == false ) && ( viewer2->done() == false ) )
{
viewer1->frame();
viewer2->frame();
}
return 0;
}
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