{lwjgl} drawing font cause very low FPS and remove all the other graphics

Newbie & Debugging Questions
#1

Hello,
it’s the first time i try to draw font using SlickUtile, i followed the example in the main lwjgl page and then when i tried to apply it in my game the result is quite strange, i can see the text but the frame rate is between 7 and 9 and it also remove all the other graphics after they do a little “eye flash” (i saw the level then it disappear )

i call the font from another method :


// the update method
	private void update(int delta) {
		painting();
		draw.text();
		
		loop.updateFPS();
	}

the draw text method :

public void text() {
		TrueTypeFont font;
		Font awtFont = new Font("Times New Roman", Font.BOLD, 24);
		font = new TrueTypeFont(awtFont, true);
		font.drawString(100, 50, "test ", Color.white);
	}

the openGL initialization :

public void initGL() {

		GL11.glEnable(GL11.GL_TEXTURE_2D);
		GL11.glShadeModel(GL11.GL_SMOOTH);
		GL11.glDisable(GL11.GL_DEPTH_TEST);
		GL11.glDisable(GL11.GL_LIGHTING);

		GL11.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
		GL11.glClearDepth(1);

		GL11.glEnable(GL11.GL_BLEND);
		GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);

		GL11.glMatrixMode(GL11.GL_PROJECTION);
		GL11.glLoadIdentity();
		GL11.glOrtho(0, 800, 600, 0, 1, -1);

	}

thank you