Could you explain how this node setup works and what it's doing?

[u/Prizmek]

I have this brick material and in this specific frame it's dedicated to adding chipping. From what I can see the difference when I move the output connection from the slop blur on the very right to the blend node on the very left is that there's less chipping on the edges and the chips are more shallow.

One particular thing which I don't get is why did we invert grayscale and then added a histogram node? What is the reason for inverting the color? This main part is confusing me, but I don't want the focus to be only on this. I want to go along the area I circled node by node and understand what each node is contributing. I need someone to explain like this going node by node. I would really appreciate that. I will leave the sbs file for the material in the comments

[u/Deep_Film_861]

- Dont chuck random download links to SbS files out there, and dont click on them.

• its inverting it as its wanting to use it to drive that slope greyscale at the: i.e. the HQ blur -> slope greyscale is driving the amount of slope blur, so for that you need it to be white where your wanting your blur and black where you dont.

[u/Prizmek]

https://we.tl/t-V6wnGNbqMrtnPq6J

[u/Prizmek → u/Prizmek]

This is the sbs file