What is this thing called?

CGXel

Long time ago I saw a video where a game developer had his camera very close to an object in a scene, the wireframe was enabled so we could see the polygons, then he started to move away from the object and it's polygon count started to decrease in real time, for optimization I believe.

Sorry if I couldn't explain myself correctly, does anyone have an idea of what I'm talking about? what is that "thing" called?

R.I.P English.

sprunghunt

distance based tesselation - a lot of terrain systems will use it

eg: 
https://wiki.unrealengine.com/Distance_Based_DX11_Tesselation_-_Video

CGXel

sprunghunt said:

distance based tesselation - a lot of terrain systems will use it

eg: 
https://wiki.unrealengine.com/Distance_Based_DX11_Tesselation_-_Video

Thank you!

cryrid

Level of Detail (LOD)

Chidambhar_Swaroop

LOD