If you look at alot of new FPS games, and the way they do grass/weeds they use billboards, but the billboard may face the camera but it only stands upright, so if the camera moves above them and looks down they it sees the billboard on its edge.
It would be nice to have a flag so you can have either the billboard in VerticalFacing(like grass) or in a ViewFreeFacing(for explosions)...
Actually this would then allow the rain to look like points when looking straight up/down with long particles (IE Rain).. I guess..
Okay, just had a thought.. the new FPS games, might not use billboards, but 2 sided planes with the image.. so this feature might not work
![Sad :(](./images/smilies/icon_sad.gif)