@Override
    public void getRenderSize(Vector2f store) {
        if( vrSystemFunctions == null ) {
            // 1344x1512
            store.x = 1344f;
            store.y = 1512f;
        } else {
            IntByReference x = new IntByReference();
            IntByReference y = new IntByReference();
            vrSystemFunctions.GetRecommendedRenderTargetSize.apply(x, y);
            store.x = x.getValue();
            store.y = y.getValue();
        }
    }
Initialize the headset camera.
@param allowed <code>true</code> is the use of the headset camera is allowed and <code>false</code> otherwise.
jme3-vr/src/main/java/com/jme3/input/vr/openvr/OpenVR.java