Mesh animation seems strange after conversion

[enzopoeta]

Hello people ! I'm trying to convert my assets using COLLADA2GLTF and I'm being more or less successful. In the rest pose the collada and gltf models seem identical. But during the animations i got several artifacts in the gltf mesh. I'm sending video links with the animation in the 2 formats and the original DAE. Thanks for the help!

-- GLTF Animation
https://youtu.be/Tzvz5vIZ_o0

-- Collada Animation
https://youtu.be/9OzYk2oUvzo

-- Original DAE

https://drive.google.com/file/d/1MLak3lu0eRxUKepFznD6J0pO6v796mG4/view?usp=sharing

[lasalvavida]

Hi @enzopoeta,

It used to be that we were limited to 4 weights per vertex for skinning in glTF because they had to fit into a vec4. This model has a lot more than 4 weights per vertex, so the converter is dropping the extra ones. This is the source of the artifacting that you are seeing.

There is a way to do this now in glTF 2.0 with multiple sets of weights on a single primitive. I will use this issue to track the progress on that.

Thanks,
Rob

[enzopoeta]

Thanks Rob ! I fixed the Vertex limits on blender but now i always a segfault when i try to convert the resulting DAE....Do you know If There is a way to Discover why the converter is crashing ? Thanks again for your help! Ps: im using a Ubuntu 18.4 compiled version from the latest source

[enzopoeta]

Hello, I tried to use collada2gltf on a windows machine and it worked like a charm. Thanks again !