FGFS-4.1/OpenSceneGraph
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For testing purposes added code path and options for testing viewer creation in series, including with enabling of VBO's. Options are:

Browse Source 
osgcamera -r 5 --vbo cow.osg

Which repeats construction of the viewer 5 times in a row, and enables VBO, and on each repeat a new model is loaded.

  osgcamera -r 2 --vbo --shared cow.osg

Which repeats construction of the viewer 2 times in a row, and enables VBO, and on each loads the model once and shares it between each instance of the viewer.
This commit is contained in:
Robert Osfield 2009-11-25 16:31:14 +00:00
parent 90bd49100f
commit e5b76975a9
1 changed files with 44 additions and 2 deletions
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46
examples/osgcamera/osgcamera.cpp
View File

@ -173,6 +173,23 @@ void multipleWindowMultipleCameras(osgViewer::Viewer& viewer, bool multipleScree
}
}
class EnableVBOVisitor : public osg::NodeVisitor
{
public:
EnableVBOVisitor():
osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ALL_CHILDREN) {}
void apply(osg::Geode& geode)
{
for(unsigned int i=0; i<geode.getNumDrawables();++i)
{
osg::Geometry* geom = geode.getDrawable(i)->asGeometry();
osg::notify(osg::NOTICE)<<"Enabling VBO"<<std::endl;
geom->setUseVertexBufferObjects(true);
}
}
};
int main( int argc, char **argv )
{
// use an ArgumentParser object to manage the program arguments.
@ -187,9 +204,22 @@ int main( int argc, char **argv )
unsigned int numRepeats = 2;
if (arguments.read("--repeat",numRepeats) || arguments.read("-r",numRepeats) || arguments.read("--repeat") || arguments.read("-r"))
{
bool sharedModel = arguments.read("--shared");
bool enableVBO = arguments.read("--vbo");
osg::ref_ptr<osg::Node> model;
if (sharedModel) model = osgDB::readNodeFiles(arguments);
if (sharedModel)
{
model = osgDB::readNodeFiles(arguments);
if (!model) return 0;
if (enableVBO)
{
EnableVBOVisitor enableVBOs;
model->accept(enableVBOs);
}
}
osgViewer::Viewer::ThreadingModel threadingModel = osgViewer::Viewer::AutomaticSelection;
while (arguments.read("-s")) { threadingModel = osgViewer::Viewer::SingleThreaded; }
@ -206,7 +236,19 @@ int main( int argc, char **argv )
viewer.setThreadingModel(threadingModel);
if (sharedModel) viewer.setSceneData(model.get());
else viewer.setSceneData(osgDB::readNodeFiles(arguments));
else
{
osg::ref_ptr<osg::Node> node = osgDB::readNodeFiles(arguments);
if (!node) return 0;
if (enableVBO)
{
EnableVBOVisitor enableVBOs;
node->accept(enableVBOs);
}
viewer.setSceneData(node.get());
}
viewer.run();