How does sprite rendering work in Unity 2D?

Question

Unity

Let's say I want to make a huge 2D sprite map that I can run around and interact with individual objects, like in Stardew Walley or Factorio games. Question - what happens outside the camera? Do I need to solve the optimization problem somehow, or is the whole scene rendered completely at once and does not consume processor resources?

Answer 1

A huge map must be divided into parts and loaded at the right time, depending on which direction the character went.
Magic happens outside the camera :)