6a67be2e32
forcing users to use osgDB::readRef*File() methods. The later is preferable as it closes a potential threading bug when using paging databases in conjunction
with the osgDB::Registry Object Cache. This threading bug occurs when one thread gets an object from the Cache via an osgDB::read*File() call where only
a pointer to the object is passed back, so taking a reference to the object is delayed till it gets reassigned to a ref_ptr<>, but at the same time another
thread calls a flush of the Object Cache deleting this object as it's referenceCount is now zero. Using osgDB::readREf*File() makes sure the a ref_ptr<> is
passed back and the referenceCount never goes to zero.
To ensure the OSG builds when OSG_PROVIDE_READFILE is to OFF the many cases of osgDB::read*File() usage had to be replaced with a ref_ptr<> osgDB::readRef*File()
usage. The avoid this change causing lots of other client code to be rewritten to handle the use of ref_ptr<> in place of C pointer I introduced a serious of
templte methods in various class to adapt ref_ptr<> to the underly C pointer to be passed to old OSG API's, example of this is found in include/osg/Group:
bool addChild(Node* child); // old method which can only be used with a Node*
tempalte<class T> bool addChild(const osg::ref_ptr<T>& child) { return addChild(child.get()); } // adapter template method
These changes together cover 149 modified files, so it's a large submission. This extent of changes are warrent to make use of the Object Cache
and multi-threaded loaded more robust.
git-svn-id: http://svn.openscenegraph.org/osg/OpenSceneGraph/branches/OpenSceneGraph-3.4@15165 16af8721-9629-0410-8352-f15c8da7e697
112 lines
3.6 KiB
C++
112 lines
3.6 KiB
C++
/* OpenSceneGraph example, osgkeystone.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <osg/Notify>
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#include <osg/io_utils>
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#include <osg/TextureRectangle>
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#include <osg/TexMat>
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#include <osg/Stencil>
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#include <osg/PolygonStipple>
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#include <osg/ValueObject>
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#include <osgDB/ReadFile>
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#include <osgDB/WriteFile>
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#include <osgGA/StateSetManipulator>
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#include <osgGA/TrackballManipulator>
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#include <osgViewer/Viewer>
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#include <osgViewer/ViewerEventHandlers>
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#include <osgViewer/config/SingleWindow>
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#include <osgViewer/config/SingleScreen>
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#include <osgViewer/config/WoWVxDisplay>
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int main( int argc, char **argv )
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{
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osg::ArgumentParser arguments(&argc,argv);
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// initialize the viewer.
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osgViewer::Viewer viewer(arguments);
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osg::DisplaySettings* ds = viewer.getDisplaySettings() ? viewer.getDisplaySettings() : osg::DisplaySettings::instance().get();
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ds->readCommandLine(arguments);
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osg::ref_ptr<osg::Node> model = osgDB::readRefNodeFiles(arguments);
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if (!model)
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{
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OSG_NOTICE<<"No models loaded, please specify a model file on the command line"<<std::endl;
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return 1;
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}
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OSG_NOTICE<<"Stereo "<<ds->getStereo()<<std::endl;
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OSG_NOTICE<<"StereoMode "<<ds->getStereoMode()<<std::endl;
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viewer.setSceneData(model);
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// add the state manipulator
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viewer.addEventHandler( new osgGA::StateSetManipulator(viewer.getCamera()->getOrCreateStateSet()) );
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// add the stats handler
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viewer.addEventHandler(new osgViewer::StatsHandler);
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// add camera manipulator
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viewer.setCameraManipulator(new osgGA::TrackballManipulator());
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OSG_NOTICE<<"KeystoneFileNames.size()="<<ds->getKeystoneFileNames().size()<<std::endl;
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for(osg::DisplaySettings::FileNames::iterator itr = ds->getKeystoneFileNames().begin();
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itr != ds->getKeystoneFileNames().end();
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++itr)
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{
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OSG_NOTICE<<" keystone filename = "<<*itr<<std::endl;
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}
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ds->setKeystoneHint(true);
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if (!ds->getKeystoneFileNames().empty())
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{
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for(osg::DisplaySettings::Objects::iterator itr = ds->getKeystones().begin();
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itr != ds->getKeystones().end();
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++itr)
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{
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osgViewer::Keystone* keystone = dynamic_cast<osgViewer::Keystone*>(itr->get());
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if (keystone)
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{
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std::string filename;
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keystone->getUserValue("filename",filename);
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OSG_NOTICE<<"Loaded keystone "<<filename<<", "<<keystone<<std::endl;
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ds->getKeystones().push_back(keystone);
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}
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}
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}
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viewer.apply(new osgViewer::SingleScreen(0));
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viewer.realize();
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while(!viewer.done())
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{
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viewer.advance();
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viewer.eventTraversal();
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viewer.updateTraversal();
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viewer.renderingTraversals();
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}
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return 0;
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}
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