Needle engine export to GLB does not create LODS

🌵 Needle Engine
1

Hi, I was trying to export some prefab to compressed GLB, but it doesnt create the LODs with it, it only gives one compressed GLB file. It works with the compressed glTF, but it doesn’t work with the GLB. Do you know what could be causing this? On all meshes, I have the use progessive mesh ticked, I have eneabled Mesh and Texture LODs in the Compression and Lod Settings. Also using the newest version of needle.

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2

Hello Vydymil,

It seems that your issue with exporting GLB files without generating the expected Level of Detail (LOD) levels could be tied to a recent change in the compression pipeline and settings in the Needle Engine.

  1. NPM Version: Ensure you are using NPM 10 or higher. The updates made to the compression pipeline in the latest Needle Engine versions require this for better stability in exporting GLB files with LODs (see releases).

  2. Export Settings: Double-check the export settings for the specific prefab you are trying to export. While you have enabled “Mesh and Texture LODs” and checked “Use Progressive Mesh,” these settings should be enforced in the context of GLB exports, similar to what’s done in glTF exports. Make sure there are no conflicting settings in your project that might affect this.

  3. LOD Group Exporting: Look into whether the script handling the export (specifically GltfExport or GLTFExport) manages LODs correctly for GLB formats. There may be issues reflected in how LODs are currently prepared for these files (see releases) (see the documentation).

  4. Exporting Process: The process can vary slightly between glTF and GLB exports, and there might be discrepancies in handling LODs. Investigate the ExportSelectedObject function in relation to GLB files to see if it correctly accommodates the LOD settings during export (see the documentation) (see the documentation).

  5. Feedback for Errors: Implement additional logging to capture any messages generated during the export process. This can help in identifying whether the LOD information isn’t being processed or exported correctly (see the documentation).

Please review these points and ensure your setup adheres to the requirements mentioned. If the issue persists, consider reaching out to the Needle Engine support channels or forums with the details of your current configuration and any logged errors during the export process.

Feel free to ask if you need further clarification or assistance!

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3

Hi, did you try using both menu items on the same mesh/model? What does the Unity console say?

4

Yes, I tried both. After checking the console (didn’t see it before), there is Missing optional extension, “NEEDLE_progressive_texture_settings”.

5

Ok, that’s surprising. I’ll try if it reproduces here.

6

Thanks

7

Hi, there was indeed a wrong argument set in the menu item - will be fixed in the next update. Thanks for reporting

8

Great to hear! Looking forward to the update.

9

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