Changeset 10831 for OpenSceneGraph/trunk/examples/osgcamera/osgcamera.cpp

Timestamp:

11/25/09 17:31:14 (4 years ago)

Author:

robert

Message:

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

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.

Files:

• OpenSceneGraph/trunk/examples/osgcamera/osgcamera.cpp (modified) (3 diffs)

OpenSceneGraph/trunk/examples/osgcamera/osgcamera.cpp

@@ -174 +174 @@
 }
 
+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 )
 {
@@ -188 +205 @@
     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;
@@ -207 +237 @@
 
             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();