When I zoom in a shape to the millimeters level, the visualization of shaded faces is all... jagged. I tried the suggestions in http://www.opencascade.org/org/forum/thread_13256/ and also changing the values for the meshing, but the result is the same. Using Mesa3d yields the same results, so it does not seem to be a driver problem. It is even worse when I rotate the view because it "moves" (so it does not seem to be an issue with triangulation at all). In fact, it looks like it is composed of a bunch of planes nearly parallel to the view.
Here you can see what I am talking about: http://img200.imageshack.us/img200/7439/jagged.png
Does anyone know why is that happening and how to solve it?