How to use it separately for the later stage of a certain object

playcanvas/engine/blob/main/scripts/posteffects/posteffect-bloom.js

I really don’t understand why the post effects in playcanvas.js affect the camera and cause all entities to emit light. In fact, in normal development, we often only want a certain object to emit light instead of the entire object. For example, in three-js or 3D software, you can choose a glowing object