when add cmpt to 3dTiles,include i3dm
Unfortunately, we do not support .i3dm tiles. We have an issue for it open on Github, and you’ll hear about any progress there.
Just to update for any future visitors: support for EXT_mesh_gpu_instancing and I3DM is now available in Cesium for Unreal v2.6.0. Feel free to try it out and let us know how it goes!