ADF-22 | Shader Compilation Lag Spike

[TinyTakinTeller]

Moved from Trello: https://trello.com/c/hvs2OZcF

Godot and game engines in general, have a known problem for lag spikes when shaders are loading (displayed) for the first time. - see godotengine/godot#61233 for example.

To reproduce, open game on new device or clear shader cache on the device, before loading any shader e.g. darkness shader when clicking enemy on darkness tab.

A possible workaround that I've seen used around, is to display all shaders at one scene and then hide it behind a loading bar. Sometimes, this is not enough so people have hidden an "automated playthrough" behind a loading scene to cover all shader compilation cases, e.g. https://www.youtube.com/watch?t=438&v=oG-H-IfXUqI