I''m trying to render an hourglass shape to look like glass. It is the combination of 2 spheres and 2 cones. When I try to make it transparent so the sand would show, I cannot see the sand. I read in other postings that this is because you need to draw the objects in order; but how would I do that for a cone and sphere? I thought Depth Test took care of that? Also, the overlap of the cone and sphere cause a darker stripe to appear, is there any way to get around that? or is there a better technique such as texture mapping? thanks ahead of time.