How to apply postprocessing effect to only hotspot objects?

Hi! I saw postprocessing plugin and I wonder how to apply this effect to only hotspot object.
If anyone know this solution, please tell me how to do!

Thank you reply!

I understand it's not possible.
After this question, I read about WebGL.
Multipassfilter means secondary shader for rendered image.
So if I want to make hotspot blurred, I have to intercept KRPano's rendering pipeline.
That's why it's not possible.

So instead of this, I make pre-blurred image for hotspot using photoshop.
( What a simple solution)