3dtiles error when upgrade cesium to 1.97

CesiumJS
1

I have a 3dtiles set that works on cesium 1.82.
After upgrading to 1.97 I get errors:
‘=’ : dimension mismatch
‘assign’: cannot convert from ‘highp 2component verctor of float’ to ‘highp 3-component vector of float’

any idea?

2

Hi @attar.tal,

Does your tileset contain glTF 1.0 models? If so, then this may be connected to this issue on Github: glTF 1.0: treat vec2 normals as oct-encoded to prevent crashes · Issue #10821 · CesiumGS/cesium · GitHub

I’ll reference this thread on that issue. That way, when the issue is resolved, someone can post an update on this thread :slight_smile:

3

@attar.tal would you be able to share your tileset with us? I created a branch to fix this and I’m looking for more data to test with. You could also try it out yourself.

The link to the branch is here: glTF 1.0: treat vec2 normals as oct-encoded to prevent crashes · Issue #10821 · CesiumGS/cesium · GitHub

4

I tried the “old” New-York (https://cesiumjs.org/NewYork/3DTiles/NewYork.zip)

I ran the tile3d validator on one of the b3dm file and got the error:

Header is using the legacy format [batchLength] [batchTableByteLength]. The new format is [featureTableJsonByteLength] [featureTableBinaryByteLength] [batchTableJsonByteLength] [batchTableBinaryByteLength].

5

Ah thanks!

It’s an old tileset and you can ignore the validation error. We support older b3dm versions in CesumJS.

The branch seems to fix the shader crash but there’s still some artifacts with the normals. I posted a screenshot in the github issue.