Softbody High Particle Count Skinning Bug

[josemendez]

Thanks for reporting this issue!

Found the culprit: skin, blueprints and softbody transforms have different scales, and there's a bug that affects the skinning process, shifting particle distances by an incorrect scale.

To fix it, open up ObiSoftbodySkinner.cs, around line 331 you should find this:

Code:

var blueprintTransform = Matrix4x4.TRS(Vector3.zero, softbody.softbodyBlueprint.rotation, softbody.softbodyBlueprint.scale);

skinMap.MapParticlesToVertices(skinnedMeshRenderer.sharedMesh, softbody, transform.localToWorldMatrix * blueprintTransform, softbody.transform.worldToLocalMatrix, radius, falloff, maxInfluences, true, softbodyInfluence, m_softbodyInfluences);

Replace with:

Code:

skinMap.MapParticlesToVertices(skinnedMeshRenderer.sharedMesh, softbody, transform.localToWorldMatrix, softbody.transform.worldToLocalMatrix, radius, falloff, maxInfluences, true, softbodyInfluence, m_softbodyInfluences);

The reasoning for this is that blueprint scale/rotation is already baked into particle rest positions, no need to reapply it during skinning.

Let me know if this fixes your problem.

kind regards,