Game resolution vs Monitor resolution

[knowledge2121]

If the monitor's max resolution is 1920 x 1080 , and the game's resolution is set to 1920 x 1080, then all pixels on the monitor are functioning...

But if we set the game's resolution to let's say 1600 x 900 , then how do the pixels on the monitor behave ? will they all be still working ? or only 1600 x 900 pixels work ?

 

[jay2577]

The monitor will usually stretch the picture to fill the whole screen. It won't be as clear as the monitors native resolution but will still fill the screen

 

[knowledge2121]

yeah, but what happens to pixels ? if the image and the monitor are both 1920 x 1080 then one pixel from the image is mapped to one pixel on the monitor.....what happens to pixels if the image is 1600 x 900 and the resolution is 1920 x 1080 ?


another question :

if the image is 1920 x 1080 , and the resolution is 1600 x 900....then what happens to pixels ?