Different camera aspect ratios/resolutions?

Question

Hello! I'm working on a project where the idea is you're playing on a fictional DS-esque system. While the main camera shows the ds and the background room, and should be 16:9. The DS uses a 4:3 aspect ratio and a resolution of about 256 x 192 pixels. My question is, how can I make the DS cameras render with those settings while keeping the main camera as usual? Thanks in advance!

Answer 1

If you intend to use RenderTextures for the screen(s), then you barely have to do a thing, since those textures can be set to whatever resolution (and, by extension, aspect ratio) you want.

^Untested

 RenderTexture topScreenRT;
 Camera topScreenCam;
 RenderTexture bottomScreenRT;
 Camera bottomScreenCam;

 void Start()
 {
     topScreenRT = new RenderTexture(256, 192, 16, RenderTextureFormat.ARGB32);
     topScreenRT.Create();
     topScreenCam.targetTexture = topScreenRT;
     bottomScreenRT = new RenderTexture(256, 192, 16, RenderTextureFormat.ARGB32);
     bottomScreenRT.Create();
     bottomScreenCam.targetTexture =bottomScreenRT;
 }

This isn't exactly a comprehensive solution, but ought to be a viable starting point in approaching this. Essentially, you can define anything you want to be rendered on those additional cameras, while the RenderTextures will enforce their defined (local) render resolutions.

Different camera aspect ratios/resolutions?

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