A co-worker of mine recently fixed a bunch of similar VPB issues by
following this advice:
http://forum.osgearth.org/Critical-issue-with-paging-and-horizon-td5789174.html
The jist of it is this:
'Try setting your OSG_MAX_PAGEDLOD environment variable to something
higher (default is 300 if I remember correctly). Also, try changing
your loading policy to "preemptive" since that way the current LOD is
loaded first. '
- Rob
On 4/21/2011 8:50 AM, Lv Qing wrote:
Hi,
...
linux qt4 osg2.8.4
I have use ViewerQT to integrate an osg application to a qt4 application witch
has other developer's none-osg application.
Then something strange happen,the ViewerQT seems disturb qt4 application's
shared memory ,which cause some memory crash however
not direct to my osg code but other developer's none-osg code.I removed
my osg code entirely,everything is OK,so I pretty sure it is related to my osg
code.
Then I remove every osg code but just loading an vpb generated .osga terrain
model,the shared memory disturbing issure return! Instead I load a commen .osga
model like cow.ive ,it is OK!
Thank you!
Cheers,
Lv
Code:
class CompositeViewerQT : public osgViewer::CompositeViewer, public
AdapterWidget
{
public:
CompositeViewerQT(QWidget * parent = 0, const char * name = 0, const QGLWidget
* shareWidget = 0, WindowFlags f = 0):
AdapterWidget( parent, name, shareWidget, f )
{
setThreadingModel(osgViewer::CompositeViewer::SingleThreaded);
setCameraManipulator(new osgGA::TrackballManipulator);
osg::ref_ptr<osg::Node> loadedModel= osgDB::readNodeFile("terrain.osga");
//vpb generated .osga model .error
osg::ref_ptr<osg::Node> loadedModel= osgDB::readNodeFile("cow.ive"); //OK
setSceneData(loadedModel.get());
connect(&_timer, SIGNAL(timeout()), this, SLOT(updateGL()));
_timer.start(10);
}
virtual void paintGL()
{
frame();
}
protected:
QTimer _timer;
};
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=38705#38705
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