Added missing Camera::setDrawBuffer()/setReadBuffer()

examples/osgviewerCocoa/ViewerCocoa.mm

@@ -297,6 +297,10 @@ static void Internal_SetAlpha(NSBitmapImageRep *imageRep, unsigned char alpha_va
     osg::DisplaySettings::instance()->setMaxNumberOfGraphicsContexts(1);
 #endif // VIEWER_USE_SHARED_CONTEXTS
 
+    // set the draw and read buffers up for a double buffered window with rendering going to back buffer
+    theViewer->getCamera()->setDrawBuffer(GL_BACK);
+    theViewer->getCamera()->setReadBuffer(GL_BACK);
+
     // Cocoa follows the same coordinate convention as OpenGL. osgViewer's default is inverted.
     theViewer->getEventQueue()->getCurrentEventState()->setMouseYOrientation(osgGA::GUIEventAdapter::Y_INCREASING_UPWARDS);
     // Use a trackball manipulator...matches nicely with the Mighty Mouse Scrollball.

examples/osgviewerFLTK/osgviewerFLTK.cpp

@@ -104,6 +104,11 @@ class ViewerFLTK : public osgViewer::Viewer, public AdapterWidget
                 getCamera()->setViewport(new osg::Viewport(0,0,w,h));
                 getCamera()->setProjectionMatrixAsPerspective(30.0f, static_cast<double>(w)/static_cast<double>(h), 1.0f, 10000.0f);
                 getCamera()->setGraphicsContext(getGraphicsWindow());
+
+                // set the draw and read buffers up for a double buffered window with rendering going to back buffer
+                getCamera()->setDrawBuffer(GL_BACK);
+                getCamera()->setReadBuffer(GL_BACK);
+
                 setThreadingModel(osgViewer::Viewer::SingleThreaded);
             }
 
@@ -161,6 +166,11 @@ int main( int argc, char **argv )
             view1->getCamera()->setGraphicsContext(viewerWindow.getGraphicsWindow());
             view1->getCamera()->setProjectionMatrixAsPerspective(30.0f, static_cast<double>(width)/static_cast<double>(height/2), 1.0, 1000.0);
             view1->getCamera()->setViewport(new osg::Viewport(0,0,width,height/2));
+
+            // set the draw and read buffers up for a double buffered window with rendering going to back buffer
+            view1->getCamera()->setDrawBuffer(GL_BACK);
+            view1->getCamera()->setReadBuffer(GL_BACK);
+
             view1->setCameraManipulator(new osgGA::TrackballManipulator);
             view1->setSceneData(loadedModel.get());
             
@@ -172,6 +182,11 @@ int main( int argc, char **argv )
             view2->getCamera()->setGraphicsContext(viewerWindow.getGraphicsWindow());
             view2->getCamera()->setProjectionMatrixAsPerspective(30.0f, static_cast<double>(width)/static_cast<double>(height/2), 1.0, 1000.0);
             view2->getCamera()->setViewport(new osg::Viewport(0,height/2,width,height/2));
+
+            // set the draw and read buffers up for a double buffered window with rendering going to back buffer
+            view2->getCamera()->setDrawBuffer(GL_BACK);
+            view2->getCamera()->setReadBuffer(GL_BACK);
+
             view2->setCameraManipulator(new osgGA::TrackballManipulator);
             view2->setSceneData(loadedModel.get());
             

examples/osgviewerFOX/FOX_OSG_MDIView.cpp

@@ -32,6 +32,11 @@ FOX_OSG_MDIView::FOX_OSG_MDIView(FXMDIClient *p, const FXString &name,
     osgViewer::Viewer *viewer = new osgViewer::Viewer;
     viewer->getCamera()->setGraphicsContext(m_gwFox);
     viewer->getCamera()->setViewport(0,0,w,h);
+
+    // set the draw and read buffers up for a double buffered window with rendering going to back buffer
+    viewer->getCamera()->setDrawBuffer(GL_BACK);
+    viewer->getCamera()->setReadBuffer(GL_BACK);
+
     viewer->setThreadingModel(osgViewer::Viewer::SingleThreaded);
 
     // FOX example does not catch the close of the graphics window, so

examples/osgviewerIPhone/iphoneViewerAppDelegate.mm

@@ -301,6 +301,10 @@ private:
         {
             _viewer->getCamera()->setGraphicsContext(graphicsContext);
             _viewer->getCamera()->setViewport(new osg::Viewport(0, 0, traits->width, traits->height));
+
+            // set the draw and read buffers up for a double buffered window with rendering going to back buffer
+            _viewer->getCamera()->setDrawBuffer(GL_BACK);
+            _viewer->getCamera()->setReadBuffer(GL_BACK);
         }
     }
         

examples/osgviewerMFC/MFC_OSG.cpp

@@ -112,6 +112,10 @@ void cOSG::InitCameraConfig(void)
     camera->setProjectionMatrixAsPerspective(
         30.0f, static_cast<double>(traits->width)/static_cast<double>(traits->height), 1.0, 1000.0);
 
+    // set the draw and read buffers up for a double buffered window with rendering going to back buffer
+    camera->setDrawBuffer(GL_BACK);
+    camera->setReadBuffer(GL_BACK);
+
     // Add the Camera to the Viewer
     //mViewer->addSlave(camera.get());
     mViewer->setCamera(camera.get());

examples/osgviewerQt/osgviewerQt.cpp

@@ -53,6 +53,11 @@ public:
 
         camera->setClearColor( osg::Vec4(0.2, 0.2, 0.6, 1.0) );
         camera->setViewport( new osg::Viewport(0, 0, traits->width, traits->height) );
+
+        // set the draw and read buffers up for a double buffered window with rendering going to back buffer
+        camera->setDrawBuffer(GL_BACK);
+        camera->setReadBuffer(GL_BACK);
+
         camera->setProjectionMatrixAsPerspective(30.0f, static_cast<double>(traits->width)/static_cast<double>(traits->height), 1.0f, 10000.0f );
 
         view->setSceneData( scene );

examples/osgviewerSDL/osgviewerSDL.cpp

@@ -128,6 +128,11 @@ int main( int argc, char **argv )
 
     osgViewer::Viewer viewer;
     osg::ref_ptr<osgViewer::GraphicsWindowEmbedded> gw = viewer.setUpViewerAsEmbeddedInWindow(0,0,windowWidth,windowHeight);
+
+    // set the draw and read buffers up for a double buffered window with rendering going to back buffer
+    viewer.getCamera()->setDrawBuffer(GL_BACK);
+    viewer.getCamera()->setReadBuffer(GL_BACK);
+
     viewer.setSceneData(loadedModel.get());
     viewer.setCameraManipulator(new osgGA::TrackballManipulator);
     viewer.addEventHandler(new osgViewer::StatsHandler);

examples/osgviewerWX/osgviewerWX.cpp

@@ -64,6 +64,11 @@ bool wxOsgApp::OnInit()
     osgViewer::Viewer *viewer = new osgViewer::Viewer;
     viewer->getCamera()->setGraphicsContext(gw);
     viewer->getCamera()->setViewport(0,0,width,height);
+
+    // set the draw and read buffers up for a double buffered window with rendering going to back buffer
+    viewer->getCamera()->setDrawBuffer(GL_BACK);
+    viewer->getCamera()->setReadBuffer(GL_BACK);
+
     viewer->addEventHandler(new osgViewer::StatsHandler);
     viewer->setThreadingModel(osgViewer::Viewer::SingleThreaded);