Meshes are corrupted - Githubissues

CesiumGS / gltf-pipeline

Content pipeline tools for optimizing glTF assets. :globe_with_meridians:

Apache License 2.0

1.87k stars 241 forks source link

Closed schwarzsky closed 2 years ago

schwarzsky commented 2 years ago

chrome_sKt4pxMHjl As you can see, you can saw the back of the meshes. This is not supposed to be happen. Any idea? Tried lowering compressionSize.

lilleyse commented 2 years ago

@schwarzsky could you post the full command? Is this just a problem with Draco compression?

lilleyse commented 2 years ago

Also if you can post the original glTF that would be helpful too

schwarzsky commented 2 years ago

First used npx gltf-pipeline -i SnowyTerrain.glb -d --draco.compressionLevel 10 -o Snowy.glb Then downed scale to 10 to 1.

I don't own the builds its not right to post GLB file but if you want it anyway i can get permission i think.

Also yes, this is a problem with Draco compression. Before compression model looks quite right. @lilleyse

lilleyse commented 2 years ago

A couple more options you could try:

--draco.unifiedQuantization - this will compress all primitives using the same quantization grid. Depending on how large the scene is this could actually lead to worse results. But worth trying to narrow down the bug.
--draco.quantizePositionBits - default is 11, keep using higher values up to 16 or so and see if it makes a difference

schwarzsky commented 2 years ago

Just used --draco.unifiedQuantization and solved the issue. Thanks!