Partial download of Discrete LoD


1. A concise explanation of the problem you’re experiencing.

I have created a 3DTileset with LoD following the code in 3d-tiles-tool. When I zoom in/out of the view, i see that the correct LoD (b3dm) is downloaded. But I see that for the most detailled one, the entire b3dm is downloaded. Is this expected ? I was expecting only a partial download considering that we are zooming on a very small part of the object.

2. A minimal code example. If you’ve found a bug, this helps us reproduce and repair it.

Code from 3d-tiles-tool for generation and basic Tile loading.

3. Context. Why do you need to do this? We might know a better way to accomplish your goal.

To reduce 3D model loading time.

4. The Cesium version you’re using, your operating system and browser.

Cesium 1.60, firefox, MacOS

Note that 3d-tiles-tools does not actually tile your models, but can just convert individual models to b3dm, and a variety of other helpful utilities.

If you want to get an optimized tileset, I would upload your models to Cesium ion ( If you’re looking for an offline/on-premise solution, see my answer here: