# File gtkglext/sample/share-lists.rb, line 38
def realize_main(w, l)
    glcontext = w.gl_context
    gldrawable = w.gl_drawable

    gldrawable.gl_begin(glcontext) do
        qobj = GLU.NewQuadric
        GLU.QuadricDrawStyle(qobj, GLU::FILL)
        GL.NewList(1, GL::COMPILE)
        GLU.Sphere(qobj, 1.0, 20, 20)
        GL.EndList

        init_gl(l)
    end
end