Increase window size without increasing resolution?

Hi, all. I'm toying around with designing PS1-style games because I really like the compact low-res look. A 320x240 window size is great for what I'm doing.



But yea, something that small can be annoying to focus on for a while so I want to give the option to increase the window size without actually increasing the resolution of the game, like you can do in the scene view.



Like this.

I know how to set the Window size in the build settings menu but not how to adjust it with a script. Can anyone provide some insight? For that matter, is having a scaled-up window even more resource-efficient than a higher resolution? If anyone can offer some advice I'd be really thankful.

 

Replace your main camera's render target with a render texture of the resolution you want.

This will make it not render to the screen though, which you can fix by swapping to a render texture using c# on pre and post render and using a

Graphics.Blit(myRT, null)

to render it back to the frame buffer, or by using two cameras and have the second camera just render a quad with your first camera's render texture on it.

There are also assets on the store that do all of this for you if you want.