Exception in thread "main" java.lang.IllegalStateException: Function is not supported
   at org.lwjgl.BufferChecks.checkFunctionAddress(BufferChecks.java:64)
   at org.lwjgl.opengl.EXTFramebufferObject.glBindFramebufferEXT(EXTFramebufferObject.java:170)
   at cz.advel.modern3d.opengl.LWJGLContext.flush(LWJGLContext.java:175)
   at cz.advel.modern3d.opengl.LWJGLContext.<init>(LWJGLContext.java:93)
   at cz.advel.pureswing.test.Modern3DDemo.main(Modern3DDemo.java:82)

---- LoD (1) --->| (1) |---- (2) -->
<--- LoD (1) ----| (2) |<--- (2) ---

import java.awt.*;
import javax.swing.*;

public class Active extends JPanel {
    
    public void run() {
        while (true) {
            //render(getGraphics()); // --- > uncomment this 
            paintImmediately(getBounds()); // --> comment this
            try {
                Thread.sleep(10);
            } catch (Exception e) {}
        }
    }
    protected void paintComponent(Graphics g) {
        render(g);
    }
    
    int textPosition = 0;
    void render(Graphics g) {
        Dimension size = getSize();
        
        g.setColor(Color.ORANGE);
        g.fillRect(0, 0, size.width, size.height);
        
        textPosition += 3;
        textPosition = (textPosition > size.width) ? 0 : textPosition;
        
        g.setColor(Color.RED);
        g.drawString("moving string", textPosition, textPosition);
    }
    
    public static void main(String[] args) throws Exception {
        JFrame frame = new JFrame("active rendering test");
        JLayeredPane layeredPanel = new JLayeredPane();

        Active active = new Active();
        layeredPanel.add(active, JLayeredPane.DEFAULT_LAYER);
        active.setBounds(0, 0, 400, 400);
        
        JLabel label = new JLabel("a long long label");
        layeredPanel.add(label, JLayeredPane.DRAG_LAYER); // above active
        label.setBounds(0, 0, 200, 40);
        
        layeredPanel.setPreferredSize(new Dimension(400, 400));
        frame.add(layeredPanel);
        frame.pack();
        frame.setVisible(true);
        
        active.run();
    }
}

while(running) {
    // game and render stuff here
    //..
    component.repaint(); // this wont make the component to be painted immediately, but later
}

component.paintImmediately(component.getBounds());

SwingUtilities.invokeAndWait(new Runnable() {
    public void run() {
        component.paintImmediately(component.getBounds());
    }
});