bind method
Implementation
@override
void bind(GraphicsDevice device) {
  _bindVertexInfo(device);
  _bindJointMatrices(device);
  _bindMaterial(device);
  _bindCamera(device);
}@override
void bind(GraphicsDevice device) {
  _bindVertexInfo(device);
  _bindJointMatrices(device);
  _bindMaterial(device);
  _bindCamera(device);
}