Normal Edge Decal Tutorial HQ (PDF) + Unity Shader

I wanted to share this tutorial I made in my own free time regarding the Normal Edge decals. As I mentioned in the pdf, I don't want to take credit for this technique. I'm just explaining understandably. I first saw this technique in Hitman absolution that was developed in 2009. After that, many games and studios adopted it in their workflow. I link all the resources and links available online to understand the topic better at the pdf end. I hope it will improve the quality of your environments, allowing you to focus more on art.