When to make LODs: Understanding model costs

2 azeemba 2 7/16/2025, 10:56:35 PM medium.com ↗

Comments (2)

iFire · 2h ago

In godot engine we decide to do a continuous level of detail based a pixel error metric. (simplified explanation pixel-error -> based on fov -> based on floating point error of the meshopt_simplifyWithAttributes function)

The 12 ish lods are automatically generated by https://github.com/zeux/meshoptimizer.

https://docs.godotengine.org/en/stable/tutorials/3d/mesh_lod...

We allow a hierarchical level of detail if people want to set it up.

iFire · 2h ago

Our budget couldn't afford Epic Games style nanite, but there are three js implementions.. so it's not impossible to recreate.

- https://github.com/AIFanatic/three-nanite

- https://news.ycombinator.com/item?id=42974461

three-nanite is based on https://github.com/zeux/meshoptimizer cutting each mesh into maybe 124 triangles per chunk.