Using post-processing effects

One of the ways that we can improve the visual quality of our game with little effort is using post-processing effects (previously called Image Effects). Post-processing is the process of applying filters and other effects to what the camera will draw (the image buffer) before it is displayed on the screen.

Unity includes a number of effects in its freely available post-processing stack, so let's go ahead and add it:

1. Open up the Asset Store again, and search for Post Processing Stack this time:

2. Select to Download it, and click on the Accept button when it asks you to. Once it's finished, go ahead and import the contents into our project.
3. Switch to the Scene window, and then from the Hierarchy window, select our Main Camera object and select Add Component in the Inspector and type in PostProcessing; then move your mouse over the Post Processing Behaviour selection and then click to add the script to your project.

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