   Vegetation/Foliage/Grass Rendering
  Hey all, I was doing some searching a week or so ago, and discovered a pdf about rendering grass with various x-billboards and using the vertex shader to animate them. I can't find it! I thought that maybe I had bookmarked it or saved the pdf file, but have been searching to no avail. I am using the opera browser, and my history deletes itself if it's older than a few days, so no luck looking there for it. If anyone knows of any whitepapers they could link me to regarding rendering grass, etc.. that would be awesome. Thanks!  -Charlie   
  In this thread they talk about grass rendering. It links to a paper in the first post. Hope it helps...   