@Override public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) { GL2 gl = drawable.getGL().getGL2(); // Avoid a divide by zero error! if (height <= 0) { height = 1; } // Re-setup viewport. viewport.reshape(width, height, camera); // Re-setup opengl perspective. ViewportUtil.reshapePerspective(viewport, gl); }