How to enable global fog effect in post-processing?

Questions
1

How to ignore global fog in post-processing? I am currently performing delayed rendering in post-processing, but the colors are overlaid with global fog.

The code logic is similar to this Pg code, and I want to consider global fog when calculating. I want the color of the center to be affected by the global fog when it is turned on.

2

You will have to implement it yourself. You will need to pass the depth texture to the post-process, to get the depth from the camera position used in the fog calculation: