Hi,
I am a relative new OSG user and I am developing OSG ActiveX application.
My C++ project is compiled in VS2008 with /CLR (I am using .NET platform for
the Web services communication).
In my application the rendering (viewer->frame()) is running in a separate
thread which is started when the application in initialized. The OpenLocalFile
function (running in the main thread) is responsible for loading scenes from
the local disk.
The following is the function source code:
void CDl3dViewerCtrl::OpenLocalFile()
{
// sigal the rendering thread to stop and wait for it
StopRenderingThread();
// clean the model (except of the service nodes)
int cnt = _root->getNumChildren();
_root->removeChildren(NUMBER_SERVICE_NODES, cnt - NUMBER_SERVICE_NODES);
// Load a new model
osg::ref_ptr<osg::Node> node = osgDB::readNodeFile(_loadedFile);
if (node.valid())
{
node->setDataVariance(osg::Object::DYNAMIC);
_root->addChild(node.get());
_viewer->setSceneData(_root.get());
// Back to home position to see the whole scene
_viewer->getCameraManipulator()->computeHomePosition();
_viewer->getCameraManipulator()->home( 0.0 );
_viewer->realize();
}
else
{
::MessageBox(0, A2BSTR("Fail to open file."), L"Error", MB_OK);
}
// run the rendering thread
StartRenderingThread();
}
My problem is that without StopRenderingThread() the code doesn't work.
Actually it works, but after number of sequential calls i am getting debug
assertion: Expression: ("this->_Has_container()", 0). That call stack presented
below.
I suppose that is normal practice to make changes in the scene graph when the
rendering is running, but in my case it makes problems.
I'd happy to get any suggestion/ideas regarding this problem.
Thanks and Best Regards
Oleg
Some additional info:
I took Wang Rui http://markmail.org/message/shdd6p5lqcqg62bf sample as a start
point for my application.
The same problem is reproducible in the original (Wang Rui) ActiveX, that is
not /CLR.
It also occurs when the ActiveX is running in my tester (ActiveX container), so
I think the Internet Explorer is not guilty here.
It is happing at least on four computers (Vista/Windows 7).
The call stack:
> osg55-osgd.dll!std::_Vector_const_iterator<osg::ref_ptr<osg::Node>,std::allocator<osg::ref_ptr<osg::Node>
> > >::operator++() Line 116 + 0x3a bytes C++
osg55-osgd.dll!std::_Vector_iterator<osg::ref_ptr<osg::Node>,std::allocator<osg::ref_ptr<osg::Node>
> >::operator++() Line 350 C++
osg55-osgd.dll!osg::Group::traverse(osg::NodeVisitor & nv={...}) Line 60 +
0x8 bytes C++
osg55-osgd.dll!osg::NodeVisitor::traverse(osg::Node & node={...}) Line 191 +
0x1c bytes C++
osg55-osgUtild.dll!osgUtil::CullVisitor::handle_cull_callbacks_and_traverse(osg::Node
& node={...}) Line 300 + 0xf bytes C++
osg55-osgUtild.dll!osgUtil::CullVisitor::apply(osg::Transform & node={...})
Line 1034 C++
osg55-osgd.dll!osg::NodeVisitor::apply(osg::MatrixTransform & node={...})
Line 136 + 0x13 bytes C++
osg55-osgd.dll!osg::MatrixTransform::accept(osg::NodeVisitor & nv={...})
Line 37 + 0x41 bytes C++
osg55-osgd.dll!osg::Group::traverse(osg::NodeVisitor & nv={...}) Line 62 +
0x25 bytes C++
osg55-osgd.dll!osg::NodeVisitor::traverse(osg::Node & node={...}) Line 191 +
0x1c bytes C++
osg55-osgUtild.dll!osgUtil::CullVisitor::handle_cull_callbacks_and_traverse(osg::Node
& node={...}) Line 300 + 0xf bytes C++
osg55-osgUtild.dll!osgUtil::CullVisitor::apply(osg::Transform & node={...})
Line 1034 C++
osg55-osgd.dll!osg::NodeVisitor::apply(osg::MatrixTransform & node={...})
Line 136 + 0x13 bytes C++
osg55-osgd.dll!osg::MatrixTransform::accept(osg::NodeVisitor & nv={...})
Line 37 + 0x41 bytes C++
osg55-osgd.dll!osg::Group::traverse(osg::NodeVisitor & nv={...}) Line 62 +
0x25 bytes C++
osg55-osgd.dll!osg::NodeVisitor::traverse(osg::Node & node={...}) Line 191 +
0x1c bytes C++
osg55-osgUtild.dll!osgUtil::CullVisitor::handle_cull_callbacks_and_traverse(osg::Node
& node={...}) Line 300 + 0xf bytes C++
osg55-osgUtild.dll!osgUtil::CullVisitor::apply(osg::Group & node={...}) Line
1011 C++
osg55-osgd.dll!osg::Group::accept(osg::NodeVisitor & nv={...}) Line 38 +
0x41 bytes C++
osg55-osgd.dll!osg::Group::traverse(osg::NodeVisitor & nv={...}) Line 62 +
0x25 bytes C++
osg55-osgd.dll!osg::NodeVisitor::traverse(osg::Node & node={...}) Line 191 +
0x1c bytes C++
osg55-osgUtild.dll!osgUtil::CullVisitor::handle_cull_callbacks_and_traverse(osg::Node
& node={...}) Line 300 + 0xf bytes C++
osg55-osgUtild.dll!osgUtil::CullVisitor::apply(osg::Group & node={...}) Line
1011 C++
osg55-osgd.dll!osg::Group::accept(osg::NodeVisitor & nv={...}) Line 38 +
0x41 bytes C++
osg55-osgUtild.dll!osgUtil::SceneView::cullStage(const osg::Matrixd &
projection={...}, const osg::Matrixd & modelview={...}, osgUtil::CullVisitor *
cullVisitor=0x027cd700, osgUtil::StateGraph * rendergraph=0x027c9638,
osgUtil::RenderStage * renderStage=0x027cd358, osg::Viewport *
viewport=0x027c55b8) Line 962 + 0x42 bytes C++
osg55-osgUtild.dll!osgUtil::SceneView::cull() Line 828 + 0x57 bytes C++
osg55-osgViewerd.dll!osgViewer::Renderer::cull_draw() Line 546 + 0xf bytes
C++
osg55-osgViewerd.dll!osgViewer::Renderer::operator()(osg::GraphicsContext *
context=0x027c3c10) Line 689 + 0xf bytes C++
osg55-osgd.dll!osg::GraphicsContext::runOperations() Line 688 + 0x33 bytes
C++
osg55-osgViewerd.dll!osgViewer::ViewerBase::renderingTraversals() Line 772 +
0x15 bytes C++
osg55-osgViewerd.dll!osgViewer::ViewerBase::frame(double
simulationTime=1.7976931348623157e+308) Line 609 + 0xf bytes C++
[External Code]
DL3DVI~1.OCX!RenderThread(void* ptr = 0x027C5970) Line 153 C++
[Frames below may be incorrect and/or missing, no symbols loaded for
mscorwks.dll]
[External Code]
msvcr90d.dll!_callthreadstart() Line 293 + 0xf bytes C
msvcr90d.dll!_threadstart(void * ptd=0x027eb2d0) Line 277 C
kernel32.dll!75833677()
ntdll.dll!77509d72()
ntdll.dll!77509d45()
------------------
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http://forum.openscenegraph.org/viewtopic.php?p=26799#26799
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