@yukinoh1989
https://cgcookie.com/questions/12949-what-is-the-difference-between-alpha-blend-and-alpha-hashed
If I’m reading it right, computationally alpha clipped is a simple yes/no. Alpha hashed does some statistical calculations which increases the computational load. For something as noisy as leaves, particularly where it’s just a black and white silhouette of a leaf in the background, that extra computational load probably isn’t buying one a lot.
