Sets an influence value of a bone on a single vertex.
HRESULT SetBoneVertexInfluence( DWORD boneNum, DWORD influenceNum, FLOAT weight );
If the method succeeds, the return value is S_OK. If the method fails, the return value can be D3DERR_INVALIDCALL.
Header: Declared in D3dx9mesh.h.
ID3DXSkinInfo::GetBoneVertexInfluence, ID3DXSkinInfo::FindBoneVertexInfluenceIndex, ID3DXSkinInfo::GetBoneInfluence