Can i run a standalone game at a resolution of the NES?

Question

I want to make an 8-bit like game, with the small resolution, but how do you make a resolution like 320x480 work in a standalone game?

Answer 1

Well, there are two ways to handle this, really.

You can either force a fixed-resolution for the game through the Standalone Player Settings or you can fix the final render resolution using a Render Texture and (optional) full-screen shader. As an example of the latter solution:

 // Simple example in C#
 // This script should be attached to the main camera
 // Uses fixed width of "baseWidth" with square pixels matching aspect ratio
 public int baseWidth = 480;
 RenderTexture rt;

 void Start()
 {
     int aspectHeight = Mathf.CeilToInt(baseWidth * ((float)Screen.height / Screen.width));
     rt = new RenderTexture(baseWidth, aspectHeight, 0);
     rt.filterMode = FilterMode.Point;
 }

 void OnRenderImage(RenderTexture source, RenderTexture destination)
 {
     Graphics.Blit(source, rt);
     Graphics.Blit(rt, destination);
 }

Edit: As a further example of a way to perform the initial render at that reduced resolution (rather than scaling down a full-resolution render):

 public int baseWidth = 480;
 Rect baseRect;
 Rect scaledRect;
 RenderTexture rt;
 Camera cam;
 
 void Start()
 {
     int aspectHeight = Mathf.CeilToInt(baseWidth * ((float)Screen.height / Screen.width));
     cam = GetComponent<Camera>();
     baseRect = cam.rect;
     scaledRect = new Rect(baseRect.x, baseRect.y, (float)baseWidth / Screen.width, (float)aspectHeight / Screen.height);
 }
 
 void OnPreRender()
 {
     cam.rect = scaledRect;
 }
 
 void OnRenderImage(RenderTexture source, RenderTexture destination)
 {
     cam.rect = baseRect;
     Graphics.Blit(source, destination);
 }

Can i run a standalone game at a resolution of the NES?

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