In this fourth chapter of the Unreal Materials Masterclass series, we’ll learn about normal maps, and how they can be used to fake detail on top of simple geometry. Then we will put all of the concepts we’ve learned so far to make a convincing water over bricks effect.
Enjoy!
https://dev.epicgames.com/community/learning/tutorials/jaym/unreal-engine-fortnite-unreal-5-8-materials-masterclass-chapter-4-what-are-normal-maps