Journal 52 — Using Reflection Probes versus Screen Space Reflections in Unity

Objective: To compare the use of reflection probes and screen space reflections in a scene.

To simulate reflections, Unity has a couple different options: the Reflection Probe and Screen Space Reflections.

In the example below from “The Great Fleece”, we can simulate the reflections on the floor .

To start, we can add a new light object called a reflection probe.

The reflection probe can be set to three different types: Baked, Custom, and Realtime.

For this example, we can increase the intensity as one of the settings.

We can edit the location to set the reflection probe close to the floor surface.

Next, we need to update the bounding volume to set the reflection space to the approximate room size.

As you can see from the bounding volume, when brought just below the floor, the reflections pop up!

One final adjustment is to select the box projection for the space, which is useful for improving the accuracy of reflections in indoor spaces.

As part of the Unity Post Processing Package, Screen Space Reflections creates reflective effects such as for wet, shiny, or mirrored surfaces, along with several other enhancements.

For additional information, you can refer to these post processing assets set up for “The Great Fleece” at itch.io.

Unity Learn also has tutorials for reflection probes and screen space reflections if you are interested.

Thank you for stopping by!

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An Engineering Manager consultant who is seeking additional skills using Unity 3D for game and application development.

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Chris Nielsen

Chris Nielsen

An Engineering Manager consultant who is seeking additional skills using Unity 3D for game and application development.

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