NGUI Camera targetTexture to GUI.DrawTexture

[jkaris]

Hi,

I'm attempting to draw the view of the camera to the GUI and I can't get it working.

This is basically what I have tried:

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class s_guiCam : MonoBehaviour
5. {
6.         RenderTexture rt;
7.         public Camera guiCamera;
8.        
9.         void Start ()
10.         {
11.                 rt = new RenderTexture (Screen.width, Screen.height, 24);              
12.                 guiCamera.targetTexture = rt;
13.         }
14.        
15.         void OnGUI ()
16.         {
17.                 GUI.depth = -5001;
18.                 GUI.DrawTexture (new Rect (40, 0f, (float)Screen.width, (float)Screen.height), rt);
19.         }
20. }
21.  

Can someone let me know if this is even possible or what I'm missing.

Much thanks,
JK.

[ArenMook]

OnGUI is Unity's GUI. It's not NGUI. Get rid of the OnGUI function and use a UITexture to display the render texture you're rendering the camera into.

[jkaris]

Hi ArenMook,

Thanks for the speedy response - I've only had NGUI for a couple days and I'm not exactly sure how to do what you said.  Could you please explain a bit further how to achieve this?  Sorry for the noob-ness...

J.

[ArenMook]

Add a Simple Texture (aka UITexture). Set uiTexture.mainTexture = rt;

[jkaris]

Hi ArenMook,

I have attempted the following:

I have a game object in the Hierarchy named "NGUIObject" - I have attached a component UITexture to it.

I have created a UI Root (2D) and it simply contains 1 single label.

I have attached the following script to "NGUIObject"

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class CameraToTexture : MonoBehaviour {
5.        
6.         public Camera NGUICamera;
7.        
8.         RenderTexture rt;
9.         UITexture uiTexture;
10.        
11.         void Start () {
12.                
13.                 uiTexture = gameObject.GetComponent<UITexture>();
14.                
15.                 rt = new RenderTexture (Screen.width, Screen.height, 24);
16.                 NGUICamera.targetTexture = rt;
17.                
18.                 uiTexture.mainTexture = rt;
19.         }
20. }
21.  

When I run it, I can see in the Inspector for "NGUIObject" that the texture is being assigned to the Texture in UITexture - but I am seeing nothing on the screen.

Am I missing a step somewhere?

Thanks again,
J.

[ArenMook]

... NGUI camera shouldn't have a render texture. That's what draws your UI. You should assign the render texture to your camera that you want to do the rendering -- like a camera set to view your character's model, for example.