So in my game, the camera mostly only pans horizontally. I'd like the grass to primarily face the camera. Using billboards won't work because the grass will continually rotate (is there any practical use for billboards?). The issue I'm having is that it's difficult to be precise with placing grass because you don't know what it's going to go in regards to rotation. I have many paths that I need to keep grass off, but I also need grass to line the edges of the path. I should also point out that my grass textures are very wide - around 5:1 aspect ratio, that way I can fill out a camera's vision with grass very quickly without using too many objects in order to keep my frame rate up. All of it works great except when the grass starts rotating.