osg::Viewer setUpViewerAsEmbeddedInWindow method causes seg fault on Mac

[sushrut141]

Running a simple program to render a sphere in full screen causes a set fault when
using the setUpViewerAsEmbeddedInWindow or the setUpViewInWindow method.

Commenting out these calls fixes the issue and the Sphere is rendered but using only using a small portion of the available window space.

Running this on an M1 MacBook.

Can you please share an alternate way of rendering the scene in full screen?

Thanks

#include <osgViewer/Viewer>
#include <osg/Geode>
#include <osg/ShapeDrawable>
#include <osg/Material>
#include <osg/LightModel>
#include <osg/Vec4>
#include <osg/Vec3>
#include <iostream>

int main(int argc, char** argv) {
    // 1. Create the root of the scene graph
    osg::ref_ptr<osg::Group> root = new osg::Group();

    // 2. Create a Geode node to hold the geometry
    osg::ref_ptr<osg::Geode> geode = new osg::Geode();

    // 3. Create a sphere geometry drawable
    // Parameters: center (Vec3), radius (float)
    osg::ref_ptr<osg::ShapeDrawable> sphereDrawable =
        new osg::ShapeDrawable(new osg::Sphere(osg::Vec3(0.0f, 0.0f, 0.0f), 1.0f)); // Sphere at origin with radius 1.0

    // Set a color for the sphere
    sphereDrawable->setColor(osg::Vec4(0.0f, 0.5f, 1.0f, 1.0f)); // Blue color

    // Add the drawable to the Geode
    geode->addDrawable(sphereDrawable.get());

    // 4. Attach basic lighting and material for better visual appearance
    // This makes the sphere look 3D by reacting to light
    osg::ref_ptr<osg::StateSet> stateSet = geode->getOrCreateStateSet();
    osg::ref_ptr<osg::Material> material = new osg::Material();
    material->setDiffuse(osg::Material::FRONT_AND_BACK, osg::Vec4(0.0f, 0.5f, 1.0f, 1.0f));  // Diffuse color
    material->setSpecular(osg::Material::FRONT_AND_BACK, osg::Vec4(1.0f, 1.0f, 1.0f, 1.0f)); // Specular highlight color
    material->setShininess(osg::Material::FRONT_AND_BACK, 64.0f);                            // Shininess value
    stateSet->setAttributeAndModes(material.get(), osg::StateAttribute::ON);
    stateSet->setMode(GL_LIGHTING, osg::StateAttribute::ON); // Enable lighting for this node

    // Add a basic light model to the root of the scene (affects all children)
    osg::ref_ptr<osg::LightModel> lightModel = new osg::LightModel();
    lightModel->setTwoSided(true); // Lighting on both sides of surfaces
    root->getOrCreateStateSet()->setAttributeAndModes(lightModel.get(), osg::StateAttribute::ON);
    root->getOrCreateStateSet()->setMode(GL_LIGHTING, osg::StateAttribute::ON);


    // 5. Add the Geode to the root of the scene graph
    root->addChild(geode.get());

    // 6. Set up the OSG Viewer
    osgViewer::Viewer viewer;
    viewer.setSceneData(root.get());

    // 7. Use setUpViewerAsEmbeddedInWindow to specify window position and size
    // Parameters: x (left), y (top), width, height
    // This will create a window of 800x600 pixels at position (50, 50) on the screen.
    viewer.setUpViewInWindow(0, 0, 800, 800);

    // Optional: Adjust the camera position to get a good view of the sphere
    viewer.getCamera()->setViewMatrixAsLookAt(
        osg::Vec3(0.0f, -5.0f, 2.0f),  // Eye position
        osg::Vec3(0.0f, 0.0f, 0.0f),   // Look-at point (center of the sphere)
        osg::Vec3(0.0f, 0.0f, 1.0f)    // Up vector (Z-axis up)
    );

    // 8. Run the viewer loop
    // This will handle rendering, event processing, and scene graph updates
    return viewer.run();
}