Hi jcronje, the graphics context is initialized by OSG before the first rendering traversal. Context handling is not so easy with OSG. I usually set the following flag in order to not loose the context at the end of each frame:
Code: _viewer->setReleaseContextAtEndOfFrameHint(false); Otherwise you need to call makeCurrent() to the context before the first call to osgCuda::Texture::map(). Please be aware that osgCompute only works with a single context and a single threaded application. Code: _viewer->setThreadingModel( osgViewer::ViewerBase::SingleThreaded ); There are several options I have in mind with a standard osgViewer::Viewer: OPTION A After osgViewer::ViewerBase::realize() simply call makeCurrent() to your osg::GraphicsContext. This can be done during the initialization of your viewer e.g. in your "main.cpp". Code: _viewer->realize(); ... _viewer->getContexts( contexts ); // There should be only a single context contexts.front()->makeCurrent(); ... _texmemory->map(); ( I would prefer this method ) OPTION B Wait for osgUtil::GLObjectsVisitor traversing the scene. The first time it does the context is initialized and set as the current context. OPTION C Add your own osg::Operation as osgViewer::ViewerBase::setRealizeOperation(). At the time, the context is realized, this operation is called. As the viewer calls releaseContext() afterwards, you have to call makeCurrent() once before your modules. Hopefully this answers your question. Cheers, Jens ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=40471#40471 _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
