Text To Texture/Image

Okay, found my own answer. Will post for people looking for a similar answer:

Basically I just grabbed the pixel data from what I assume is the frame buffer. I tried this before, but I would always get the wrong area of the image. Turns out I forgot that the Y axis is reversed, which is where my issues came from. Would have saved me a lot of time if I knew/remembered that.

Anyway, hope this helps someone.

 private string textData = "";
 private Rect TextAreaRect = new Rect( 25, 25, 250, 100);
 
 void Update() {
     //Whatever condition you want to start the capture.
     if(capture_condition) {
         StartCoroutine(CaptureTextArea());
     }
 }
 
 void OnGUI() {
     //What we want to convert to image/texture
     textData = GUI.TextArea(TextAreaRect, textData);
 }
 
 
 IEnumerator CaptureTextArea() {        
     //Run at the end of frame so we get the most recent data
     //(otherwise Unity kicks up a fuss about buffers).
     yield return new WaitForEndOfFrame();
         
     int width = Mathf.FloorToInt(TextAreaRect.width);
     int height = Mathf.FloorToInt(TextAreaRect.height);
     Texture2D text_texture = new Texture2D(width, height, TextureFormat.RGB24, false);
         
     Rect tempRect = TextAreaRect;
     //There's probably a tidier way to calculate this:
     //Flip to match the Y axis properly.
     tempRect.y = Screen.height - TextAreaRect.y - TextAreaRect.height; 

     //Grab the pixels from the system buffer.
     text_texture.ReadPixels(tempRect, 0, 0);
     text_texture.Apply(); //Apply the read.
  
     //...
 }