Screen Distortion and Creating Distortion Maps

If you are more of a visual learner there’s also a video tutorial:

Screen Distortion is an effect that will distort the final frame based on a Distortion Map Texture. Note that this effect is potentially the most performance intensive effect in the asset, specially in the Built-In render pipeline. Also note that in Built-In Render Pipeline Here’s an example of the effect:

In the left you can see a test setup that is distorted, it has a fish eye shape in the middle. This distortion is set by the Normal Map on the right.

This Normal map can be created outside of Unity or you can create it inside Unity with the All In 1 Vfx Window Texture Creator (see Asset Window section for more details). For example we can create a fisheye Distortion Map like this: