public void initialize(RenderManager rm, ViewPort vp) {
renderManager = rm;
renderer = rm.getRenderer();
viewPort = vp;
fsQuad = new Picture("filter full screen quad");
Camera cam = vp.getCamera();
// save view port diensions
left = cam.getViewPortLeft();
right = cam.getViewPortRight();
top = cam.getViewPortTop();
bottom = cam.getViewPortBottom();
originalWidth = cam.getWidth();
originalHeight = cam.getHeight();
// first call to reshape
reshape(vp, cam.getWidth(), cam.getHeight());
}
