There exists a LOD extension that is very powerful if the server supports the Range header.
https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Vendor/MSFT_lod
The extension supports both geometry and materials.
The client can use the LODs to either load progressively, by distance/coverage, or by some other metric.
Only BabylonJS seems to support it at a glance.
There exists a LOD extension that is very powerful if the server supports the Range header.
https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Vendor/MSFT_lod
The extension supports both geometry and materials.
The client can use the LODs to either load progressively, by distance/coverage, or by some other metric.
Only BabylonJS seems to support it at a glance.