In the previous recipe, we set up a volumetric postprocessing effect for a scene on a Global basis, for example, the whole scene. This recipe will build on the previous one by creating a second postprocessing effect within a Local area of a scene. In this recipe, we will apply a visual vignette:
Figure 11.29 – An example of the recipe demonstrating the effect of adding a vignette
Vignetting refers to the darkening of image corners when compared to the center. In photography, vignetting can be caused by optics. In Unity, you can use URP postprocessing to draw the viewer's eye away from the distractions in the corner and, instead, toward the center of the image. In games, vignetting can be used to add suspense or atmosphere to a scene.