JOGL + Overlay + Performance Hit

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Hi,

I'm trying to use the Overlay class to draw some 2D grahpics over my 3D scene. Unfortunately I'm getting a CPU hit of about 30! percent, even if I only draw some simple rectangles. If I remove the "drawAll()" call everything is fine. Please see the test code below. Can someone give me a hint how to optimize it?

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gl.glMatrixMode(GL.GL_MODELVIEW);     gl.glLoadIdentity();                    Overlay ol = new Overlay(gld);    Graphics2D g = ol.createGraphics();    g.setPaint(new Color(255,255,0));      g.fillRect(0,0,10,10);        g.setPaint(new Color(0,255,0));      g.fillRect(10,10,40,40);         glu.gluLookAt(posx,posy,posz,  posx+dirx,posy+diry,posz+dirz,  0.0,1.0,0.0);    gl.glDrawArrays (GL.GL_TRIANGLES,0,numQuads);            ol.markDirty(0, 0, 100, 100);     ol.drawAll();         gl.glFlush();

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Hi,

I figured it out myself. The bottleneck was not "drawAll()" but the constructor of Overlay.   

Bye