Is it possible to render a camera's view within the world and have it rendered by another camera?

I have a game with 1 main camera and 5 simple single-purpose cameras. What I would like to do is have the views of the 5 simple cameras rendered within the world and shown through the main camera. Is this technically possible?

 

Ah, right. Thanks! It's a pity, it's a Pro feature though.

 

Not necessarily what you're after (and this would probably involve a huge performance hit if you did it every frame) but I've rendered cameras inside other cameras using Unity Free by doing something like this. Probably not great for a real time view but useful if you need screenshots inside the game.

Code (CSharp):

1. void OnPostRender()
2.     {
3.     Texture2D tex;
4.     tex = new Texture2D(Screen.width, Screen.height, TextureFormat.RGB24, false);
5.      tex.ReadPixels(new Rect(0, 0, Screen.width, Screen.height), 0, 0);
6.       tex.Apply();
7. }

 

Thanks for the idea. I had actually already been considering doing a thing like this, but I was also concerned that it might affect performance too much so as my need to support different angles for viewing the camera views is limited I decided to just calculate the correct position where to render the camera views to sort of fake it into the world. Seems to be working almost as nicely as actually having it inside the world.