When the camera looks up, some parts of the map appear error

[wddl]

How to solve this problem?Thanks

[gwaldron]

Need more information please: Version? Earth file? Command line?

[wddl]

Need more information please: Version? Earth file? Command line?

@gwaldron thanks to relpy! The master branch I tested around July and osg version3.3 both had this problem, and the other versions were not tested.The problem is more obvious when the camera is very close to the ground. I load a simple image layer with code. The code is as follows:

/**
 * How to create a simple osgEarth map and display it.
 */

void initCamera(double longitude , double latitude , double height = 1000.0 , double time = 0)
{

    EarthManipulator* em = dynamic_cast<EarthManipulator*>(s_pViewer->getCameraManipulator());
    if (em == NULL) {
        std::cout << "error in EarthFun::gotoViewpoint: The EarthManipulator ptr is NULL";
        return;
    }

    osgEarth::Viewpoint vp("", longitude, latitude, 0, 0, -90.0, height*2); 
    em->setViewpoint(vp , time);
}

int main(int argc, char** argv)
{

    osgEarth::initialize();

    osgViewer::Viewer viewer;
    s_pViewer = &viewer;
    osgEarth::ProfileOptions profileOpts;
    viewer.setThreadingModel(osgViewer::ViewerBase::SingleThreaded);
    //osg::setNotifyLevel(osg::INFO);
    // create the empty map.
    Map* map = new Map();

    MapNode::Options opt;

    //MapNode* node = new MapNode(map, opt);
    MapNode* node = new MapNode(map,opt);
    s_pMapNode = node;
    if (!node)
        return -1;

    osgEarth::URI uri("http://webst03.is.autonavi.com/appmaptile?style=6&x={x}&y={y}&z={z}");
    XYZImageLayer* pImageLayerXyz = new XYZImageLayer();
    pImageLayerXyz->setName("image");
    pImageLayerXyz->setURL(uri);

    pImageLayerXyz->setMaxDataLevel(18);

    pImageLayerXyz->setProfile(Profile::create("spherical-mercator"));
    map->addLayer(pImageLayerXyz);

    osg::Camera* cam = viewer.getCamera();
    EarthManipulator* pEm = new EarthManipulator;

    viewer.setCameraManipulator(pEm);
    initSky();
    viewer.getCamera()->setSmallFeatureCullingPixelSize(-1.0f);
    viewer.setSceneData(node);

    viewer.realize();

    osgViewer::GraphicsWindow* pWnd = dynamic_cast<osgViewer::GraphicsWindow*>(viewer.getCamera()->getGraphicsContext());
    if (pWnd) {
        pWnd->setWindowRectangle(500, 100, 1024, 768);
        pWnd->setWindowDecoration(true);
    }

    // add some stock OSG handlers:
    MapNodeHelper().configureView(&viewer); 
    initCamera(116.45391148594297, 39.937132385701631, 20000000);

    int r = viewer.run();
    return r;
}

[devil-darkside]

I had the same problem. Try the logarithmic depth buffer. See osgearth_city example.

[gwaldron]

@devil-darkside is right, you probably need the LogarithmicDepthBuffer installed.

osgEarth::Util::LogarithmicDepthBuffer logDepth;
logDepth.install( viewer.getCamera() );

[wddl]

@gwaldron @devil-darkside Thank you very much. The problem has been solved