With my program, while in fullscreen mode, when a vertex in a vertex array goes off the screen the entire polygone dissapears. I want my polygons to stay at least until they are completly off the screen. With windowed mode it doesn’t have this problem. I do not have this problem with call lists in fullscreen mode. My other computer doesn’t have this problem, so I think maybe something is wrong with my opengl drivers … or something. I haven’t seen direct3d have this problem, so I don’t know what to think.