I prefer the shade-c based solution because it has self shadow support on alpha textures, and a bit faster, thus some thousands of nice grass models can be placed into a scene.
Once i placed 300 grass models, killed my framerate with shade-c. Guess i did something wrong, when reading your post.
Acknex umgibt uns...zwischen Dir, mir, dem Stein dort... "Hey Griswold ... where u gonna put a tree that big ?" 1998 i married my loved wife ... Sheeva from Mortal Kombat, not Evil-Lyn as might have been expected rayp.flags |= UNTOUCHABLE;