class_docstr: Filter used to color visuals by a picking ID.
  
  Note that the ID color uses the alpha channel, so this may not be used
  with blending enabled.
code: def __init__(self, id_=None):
      super(PickingFilter, self).__init__(
          fcode=self.FRAG_SHADER, fpos=10
      )
  
      self.id = id_
      self.enabled = False
  
file_path: vispy/vispy/visuals/filters/picking.py
imports: import struct
  from .base_filter import Filter
label_desc: Use image node_id 1 to create a new PickingFilter object from inherited base classes: Filter with example: obj = PickingFilter(id_)