Fragment shader failed to compile. Compile log: ERROR: 0:76: 'undefined' : undeclared identifier

CesiumJS
1

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

RuntimeError: Fragment shader failed to compile. Compile log: ERROR: 0:76: 'undefined' : undeclared identifier
ERROR: 0:76: 'texture2D' : no matching overloaded function found
ERROR: 0:76: 'tile_diffuse_final' : no matching overloaded function found
ERROR: 0:76: 'SRGBtoLINEAR4' : no matching overloaded function found
ERROR: 0:76: '=' : dimension mismatch
ERROR: 0:76: '=' : cannot convert from 'const mediump float' to 'highp 4-component vector of float'

Error
    at new t (http://localhost:8081/Build/Cesium/Cesium.js:444:28523)
    at f (http://localhost:8081/Build/Cesium/Cesium.js:473:30288)
    at y (http://localhost:8081/Build/Cesium/Cesium.js:474:717)
    at d.get (http://localhost:8081/Build/Cesium/Cesium.js:474:1482)
    at tt (http://localhost:8081/Build/Cesium/Cesium.js:495:17176)
    at http://localhost:8081/Build/Cesium/Cesium.js:495:19504
    at Function.i.meshPrimitive (http://localhost:8081/Build/Cesium/Cesium.js:491:31983)
    at http://localhost:8081/Build/Cesium/Cesium.js:495:19461
    at Function.i.object (http://localhost:8081/Build/Cesium/Cesium.js:491:29794)
    at Function.i.topLevel (http://localhost:8081/Build/Cesium/Cesium.js:491:29899)

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

i convert obj model file to 3D Tiles,according to the tutorial https://github.com/PrincessGod/objTo3d-tiles/blob/master/README_CN.md
and loading 3DTiles,then it errors.

i use cesium1.43,it can run well,but i use version 1.46 and above,it errors

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

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

cesium 1.46 1.47 1.48 1.49 1.50 chrome

2

Thanks for testing this out! The tool you’re using isn’t something we maintain, so it just looks like they need to update it. You might get better look making an issue on their GitHub: https://github.com/PrincessGod/objTo3d-tiles/issues

Alternatively, we recently added support for 3D models in Cesium ion (cesium.com/ion) so you can try dragging your models in there and see if it works! It’s still new so let me know if you have any trouble with it.