A "Morph Angle Deformer" is a sub-tool in the Skin modifier, used to morph at certain joint angles (i.e. the pinch of an elbow). In XNA, my morph is unrecognized.

I see that XNA doesn`t support morph targets. Is this the same thing? Am I forced to implement morphs myself?

Yes, it's basically the same thing as morph targets.  You will have to implement them yourself, and make sure that the required data (angles to blend weight information) is exported and applied properly

I know of no in-game runtime engine that supports that particular feature. (Similarly, I know of none that support Bulge and Tendons in Physique). Most game animators I know of end up putting in a special scale-only bone to do bulging/deformation, and drive it using a derived key from the rotation of the "real" joint bone.

Additionally, the X file format does not support morph targets of any kind; the FBX file format may support them, but the FBX importer and the ModelData format used to import meshes into XNA Game Studio do not support morph targets either.

Simple enough. Thanks.

jwatte:

putting in a special scale-only bone to do bulging/deformation, and drive it using a derived key from the rotation of the "real" joint bone

Graham Luke:

Simple enough

I would have real trouble actually making that work right myself :-P I'm in awe of your rigging powers!