27 pointsby azeemba7 months ago3 comments

iFire7 months 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.
- iFire7 months 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.
  - esperent7 months ago
    That's a cool demo (even if it doesn't work on my phone, I get it from the video), but it's a long, long way from a nanite implementation. At best I'd call it dynamic LODs or something.
e-topy7 months ago
Jason Booth (the author) also has a YouTube channel talking about similar topics. I really liked his 'Practical Optimizations' video: https://youtu.be/NAVbI1HIzCE
- jodrellblank6 months ago
  Thanks for the cool video link!
mrala7 months ago
LOD = level of detail