Depth buffer

A depth buffer is like a bookshelf where you keep all your toys in order. In a video game, there are many different objects and characters that need to be shown on the screen, but they can't all be in the same place at the same time. Think of it like having a bunch of toy cars that you want to play with but they're all different sizes and colors.

So, in order to make sure that the right objects are seen at the right time and in the right place, the video game uses a depth buffer. This tool helps the computer figure out which object should be seen in the front, which should be seen in the middle, and which should be seen in the back.

The depth buffer creates an imaginary line on the screen that divides the space between the viewer and the objects in the game. Everything in front of that line is visible, while everything behind it is hidden. The video game uses this system to decide which objects are visible and which aren't.

For example, if you're playing a racing game, the trees and hills in the background might be behind the imaginary line, so they won't be visible to you. But, the cars and obstacles on the track will be in front of the line, so you'll be able to see them clearly.

The depth buffer is an important tool for making video games look realistic and making sure that the player can see and interact with the right objects at the right time. So, the next time you play a game, think of the depth buffer like a toy organizer that helps make sure all your toys are ready to play with when you need them!