Highlighting interactive elements

So far, we’ve had the opportunity to work with various materials; some of them more traditional, as seen in previous chapters, and some others more disruptive, as we are starting to see. Continuing with that trend, we are now going to take a look at a different type of shader that we haven’t yet tackled in this book.

I‘m talking about post process materials – a type of asset that taps into the post-processing pipeline that Unreal has in place, enabling us to create some very cool and interesting effects. We’ll explore one such example in the following pages, using it to highlight interactive elements within our games and apps. Let’s get started!

Getting ready

You’ll soon find out that the material we are about to create relies largely on math nodes and scripting, which means that there are not a lot of custom assets, such as textures or models, needed to tackle this recipe. As a consequence...