Unity Game Optimization - Third Edition

Using empty UIText elements for full-screen interaction

A common implementation in most UIs is to activate a large, transparent interactable element that covers the entire screen, forcing the player to handle a popup before proceeding, while still allowing the player to see what's going on behind it (as a means of not ripping the player out of the game experience entirely). This is often done with a UIImage element, but unfortunately, this can break batching operations, and transparency can be a problem on mobile devices.

A hacky way around this problem is to use a UIText element with no Font or Text defined. This creates an element that doesn't need to generate any renderable information and only handles bounding box checks for interaction. ...