Post processing is where you see phrases like “Bloom”, “Ambient Occlusion”, “Chromatic Aberration” and more. These are all the camera tricks that take something from looking great to looking awesome.
Installing Post Processing in Unity
Now, unfortunately, post-processing isn’t built in as a feature when you first download Unity — you’ll have to download one of their extra packages for it. Open Window > Package Manager and search for “Post Processing”, and click install on the bottom right.
This will add the package to your project, and you’ll be able to use it! You can use the package manager for a huge number of other tools as well — it gives you a lot of options to play with.
Using Post Processing for Simple Effects
To actually use post processing, there’s a few things you need to do to set it up. Like our other managers, let’s create an empty game object and call it the “Post-Process Volume”. From here, you can add the component of the same name, and where it says “Add effect…” you can see everything you have available.
However, you may notice that nothing actually changes, now matter how much you fiddle with the sliders. That’s because you still have to tell the camera that you want to use these effects. On your main camera, add the “Post-process Layer” component, and now it can finally start working! It’s also extremely helpful if you put these all on a dedicated “Post-Processing” layer.
This covers the basics, but there’s a lot more to explore here. Play around with it and find out!