How can I individually fade the background (and not the GUI)?

Questions & Answers
1

Hey all,

I'm trying to make a script that will allow me to fade the background. I've managed to find and edit one, namely this:

public var fadeOutTexture : Texture2D;
public var fadeSpeed : float = 0.3;
var drawDepth : int = -1000;
private var alpha = 1.0;
private var fadeDir : int = -1;
private var screenwidth = Screen.width;
private var screenheight = Screen.height;

function OnGUI(){

    alpha += fadeDir * fadeSpeed * Time.deltaTime; 
    alpha = Mathf.Clamp01(alpha);   

    GUI.color.a = alpha;

    GUI.depth = drawDepth;

    GUI.DrawTexture(Rect(0, 0, screenwidth, screenheight), fadeOutTexture);
}

function fadeIn(){
    fadeDir = -1;   
    Debug.Log ("ScreenFade : Fading In");
}

function fadeOutIn(waitTime : float){
    fadeOut();
    Debug.Log ("ScreenFade : Fading Out and In");
    yield WaitForSeconds (waitTime);
    fadeIn();
}

function fadeOut(){
    fadeDir = 1;   
    Debug.Log ("ScreenFade : FadingOut");
}

function Start(){
    alpha=1;
    fadeIn();
}

It works very well, but what I would like to is fade everything out, except for the GUI. I've tried managing this with GUI.Depth, but I read somewhere on the forum that the GUI is always on top, no matter what.

I'm drawing a background with DrawTexture (which I change dynamically throughout the game), so it's part of the GUI, and that means it either all fades, or nothing does.

Is there a way for me to assign a lower/higher depth to the individual DrawTexture, so I can isolate it (read: fade only that DrawTexture)? I guess what I need, is for this fade texture to get above the DrawTexture, but under the other GUI elements.

Thanks in advance,

Veliremus

2

it doesn't all have to fade - if you change GUI.color to a faded value, call the DrawTexture function, then change GUI.color to Color.white, it'll fade only that single object

edit:

GUI.DrawTexture(Rect(0, 0, screenwidth, screenheight), backgroundTexture);

GUI.color = new Color(1,1,1,0.5);
GUI.DrawTexture(Rect(0, 0, screenwidth, screenheight), fadeOutTexture);
GUI.color = Color.white;

GUI.DrawTexture(Rect(100, 100, 100, 100), anotherTexture);

that will draw a background, followed by a faded texture, followed by a smaller object on top of it