Latest answer just solved my problem ohhhhhhhhhh happy happy so happy
I don’t really understand but I caught the eureka moment!!!
Let me guide you lost soul–
- Make sure your father material has an ultimate exposed parameter that blends the PP effect with scene texture
- Set the default value of the Param in father MAT to ZERO
- Create an instance MAT and set the value to ONE
- The blend value in PP volume now magically works!!!