Acrylic — MRTK3
The experimental Acrylic feature adds a translucency effect to a surface. Objects behind that surface will appear blurred as seen through frosted glass.
The feature is enabled by adding the AcrylicHelpr.cs script to your object and in Unity's shader menu under Graphics Tools/Experimental/Acrylic, pick one of the shader options.
To learn more, see Acrylic layer system.
Acrylic in real-time
In this example, the shader reacts in real-time to the moving objects in the background.
Note
While this is a powerful visual, it's real-time use is rather expensive in terms of performance.
Acrylic pre-baked
As a different option, Acrylic blurs a static background beforehand, as you can see in the screenshots above. The rounded plates on top of the photos act as stencil windows to make the pre-blurred image visible in that area.