Yeah alpha masking is inefficient under Nanite, but as they explain further down...

jsheard 12 months ago | parent | context | favorite | on: SPAD: Spatially Aware Multiview Diffusers

Yeah alpha masking is inefficient under Nanite, but as they explain further down its handling of dense geometry is good enough that they were able to get away with not using masked materials for the foliage in Fortnite. The individual leaves are modelled as actual geometry and rendered with an opaque, non-masked material.

https://cdn2.unrealengine.com/nanite-in-fortnite-chapter-4-t...

fxtentacle 12 months ago [–]

That 2nd picture looks to me like they switched from Nanite to hand-crafted billboard textures in the 2nd or 3rd LOD.