3D Tiles Export Issues: Corrupted Textures & Batch Failures

[Muhammad Fadli Jodjana]

I'm running into a couple of challenging issues when exporting models to the Cesium 3D Tiles format and was hoping someone might have some insights.

1. Scrambled Texture Maps on Export

My main problem is with texture mapping. I have a detailed libim model with textures that look perfect. However, after exporting to 3D Tiles, the texture placement becomes completely chaotic.

To be clear, this is not a quality/compression issue—the texture image itself is fine. The problem is that the UV mapping gets scrambled, causing textures to be applied to completely wrong surfaces. It's as if the texture coordinates are being corrupted during the export process.

• Source: libim 3D format

• Output: 3D Tiles.

• Context: The model is georeferenced in a UTM WGS84 zone49s

Has anyone else encountered this? Are there specific export settings or a workflow that can help preserve the correct textures?

2. Incomplete Output on Batch COLLADA Export

My second issue is with batch processing. I have a folder containing hundreds of individual lfiles that I need to convert into a single 3D Tileset.

When I run the batch export, the process completes without any critical failure warnings, but the final tileset only contains a small fraction of the original models. Most of them are simply missing from the output.

Is there a recommended procedure or a known limitation for batch exporting a large number of files simultaneously?