Support 3D Tiles 1.1 Implicit Tiling about cesium-unity HOT 3 OPEN

Because it doesn't realize that this is an implicit tileset, it doesn't know that content/{level}_{x}_{y}.b3dm is supposed to be templatized URL. So it treats it as an ordinary URL, and resolves it relative to the tileset.json. But because { and } are invalid characters in a URL, the URL resolution fails, and so it falls back on using the original string verbatim. The original string is missing a host, so Unity's WebRequest apparently treats that as localhost.

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note: issue should move to https://github.com/CesiumGS/cesium-unity/issues I guess

from cesium-unity.

Thanks for reporting this @bertt. I believe the reason it's not working is because cesium-native (and therefore Cesium for Unity), don't support the 3D Tiles 1.1 form of implicit tiling yet. They do support the 3D Tiles 1.0 3DTILES_implicit_tiling extension, though, which is very similar. We have a cesium-native issue to implement this:
CesiumGS/cesium-native#527

from cesium-unity.