How does FC2 run off screen thing??

[combatace]

Well I know how does the FC2 works things on the screen. It have the iterations for the dynamics calculating every move of every object than linking it with its model files and than creating a background (visible surface, sky, fog, etc.) where models use thousands of polygons and arguments and all such stuffs. Thus, the machines has to make millions of calculations per second and GPU has to create a thousands of pixels every second to display what we see on the screen.

 

But I really don't know how does it deal with the things out side the screen, because that is the place where a tleast GPU does not have to do any thing. Can the tester/dev flash some light upon this for me.

[EtherealN]

Well, the majority of calculations would still have to be done even if things are off-screen. You still need to calculate flight behaviour for things off-screen, still need to have the terrain loaded for that area and so on.

 

In short: even if it does not involve the GPU for things off-screen, the majority of CPU load would still be there.

[combatace]

Got you, So that is why missions with loads of units fail to keep up the FPS.