void initWindow(Lwjgl3Application app) {
app.graphics.initWindow();
if (shareContext == true && Lwjgl3Graphics.contextShare == 0) {
Lwjgl3Graphics.contextShare = app.graphics.window;
}
app.initStaticVariables();
app.input.addCallBacks();
app.addCallBacks();
app.windowListener = listener;
}
