Gltfio : Skinning - Some wrong bones influence

[ThomasGorisse]

Hi,

I have a strange skinning behavior.

It seems that there is little gap between some bones influences on some vertex groups:

Everything seems OK when rendering it from Blender or Kronos sample model viewer

I can't see it on the web Filament model viewer since the camera is in the wrong orientation.

Do you have an idea of where it could come from?

[ThomasGorisse]

OK.

I figure out that disabling the

Blender > Export > gltTF 2.0
   v Animation
      v Skinning
         x Include All Bone Influences

is the way to go.

Now I have to make my animation more natural

[romainguy]

There's a limit on the number of influences a vertex can receive, I imagine that's what you are running into. @prideout

[prideout]

Hard to tell what's going on without looking at your gltf file, but here are our known skinning limitations:

• Filament supports only one vec4 joints/weights set (however this conforms with the glTF spec).
• Filament does not support shearing in the bone matrix, where shearing is defined as rotation + non_uniform_scale + rotation.

[prideout]

This is not actionable unless we have a repro model to work with.