[JAVA3D] Help to write in back buffer in postRender method

[Jean-Yves BRUD]

Hello,   I am trying to write a Rect in MyCanvas3D after each rendering, using Graphics method :   public class PkCanvas3D extends Canvas3D {     public PkCanvas3D() {         super(null);     }       /*public void postRender()  {         Graphics graph = this.getGraphics();         graph.clearRect(50, 50, 250, 250);     }     */       public void postSwap()     {         Graphics graph = getGraphics();         graph.clearRect(50, 50, 250, 250);     } }   My problem is : - If I use the preceeding code, the rendering is flashing very much. I supose it is because I write in the front buffer after the swap.   - If I put the drawing code in postRender() method, the drawing does not remain on screen. I supose it is because the swap erase my drawing.   The good solution might be to draw using the postRender but in the back buffer, just before the swap. The question is "How to draw in the back buffer ?". Is it a good question or idiotic question ?   I already saw a close question in the archives but with no answer.   Thanx a lot to my future saver.   :-)     =============================================== Jean-Yves Brud   Mél: [EMAIL PROTECTED] ===============================================