Render game 2x and down sample?

Unity Engine
1

For simple anti-aliasing, I’d like to try and render the game 2 times the size and down sample it.

Can anyone point me in the direction of doing this.

Lets say the render output size is 1024:768. How can I pre-render 2048:1536 and display it as the actual size?

Thanks,
Doc

2

why wouldnt you just use anti aliasing

3

Even 1x size with 8x sampling does not fix high contrast aliasing. 2x render with 2x sampling re-sized to 1x does.