Get Texture

Questions & Answers
1

I have a script attached to an object. Before this last modify script work correctly, but I did manually assign the texture. The last added is the part of code that can read texture from object material. (This is only a part of script, with last change):

var btnTexture : Texture;
    
function Start () {
btnTexture = renderer.material.GetTexture ("_MainTex");
}


function OnGUI () {
windowRect = GUI.Window (0, windowRect, DoMyWindowT, "");
}

function DoMyWindowT (windowID : int){
    GUI.DrawTexture(Rect(0,0,windowRect.width,windowRect.height), btnTexture, ScaleMode.ScaleToFit, true, 0f);
}

The script can read main texture object and use in GUI.DrawTexture, but when I start the scene unity say me that texture is not assigned and crash.

UnassignedReferenceException: The variable btnTexture of ‘GUI Object’ has not been assigned.
You probably need to assign the btnTexture variable of the GUI Object script in the inspector.

Somebody help me?

2

Are you using a custom shader that actually has a property called “_MainText”? Because otherwise the built-in shaders all use “_MainTexture”, though you might as well just use renderer.material.mainTexture. I’m not sure why you’re assigning it as a public variable if you’re just going to re-assign it in Start though.

3

More on this: http://forum.unity3d.com/threads/40389-Load-image-problem

Don’t try to set your texture pointer directly. Use SetTexture.