Rendering complete camera view(16:9) onto a texture in Unity3d

Question

I was playing around with Unity's render textures where you can render a camera's view onto a texture. However, I noticed that it doesn't render the entire camera's view. It only renders a square slice of the camera's view.

What I'm trying is to get the entire view of the camera(16:9 aspect ratio) rendered onto a texture(also 16:9 aspect ratio). But right now it only seems to be able to project a square slice of its view on a square surface. Is there any kind of solution to this?

Answer 1

With 'RenderTexture' you can specify your texture size: http://docs.unity3d.com/ScriptReference/RenderTexture.Create.html

It should go like this:

Camera camera = GameObject.Find("Main Camera");
int resWidth = Screen.width;
int resHeight = Screen.height;

RenderTexture rt = new RenderTexture(resWidth, resHeight, 24);
camera.targetTexture = rt; //Create new renderTexture and assign to camera
Texture2D screenShot = new Texture2D(resWidth, resHeight, TextureFormat.RGB24, false); //Create new texture

camera.Render();

RenderTexture.active = rt;
screenShot.ReadPixels(new Rect(0, 0, resWidth, resHeight), 0, 0); //Apply pixels from camera onto Texture2D

camera.targetTexture = null;
RenderTexture.active = null; //Clean
Destroy(rt); //Free memory