Game Deformation Guidelines
Harmony can export deformations to the game engine XML format. Only hierarchies made of Game Bones can be successfully exported. In addition, Kinematic Outputs were implemented to complement your game bones—see About Game Bone Deformations.
The deformation in the game engine SDK does not behave exactly as the deformation in Harmony.
To comply with most game engines and maintain fast calculations, the SDK implements a linear base skinning algorithm to linearly blend the bones at articulations. You may notice some differences depending on the curvature of the articulations used.