@theluthier theoretically, that could work, but the biggest problem with grass cards (I’ve tried that too 😉 ), is that the illusion breaks when viewed from above. And when the camera is close to the grass, we will see it from above (especially with a small Focal Length of around 23mm).
And, like @jlampel already pointed out: …If that’s the goal, view based effects like camera culling will unfortunately not be a solution…the same goes for Distance from Camera.
I know I haven’t posted a lot, but I have tested many different approaches and most have unacceptable drawbacks 🙂