Change material texture runtime

Unity Engine
,
1

I have a Material Mt and a Texture Tx (not Texture2D)
How do I change the maintexture of the Mt with Tx?

Mt.texture=Tx; does not have effect
SetTexture make error.

2

The correct use of SetTexture is described in this page of the Unity documentation: Unity - Scripting API: Material.SetTexture

A simplification of their example would be:

using UnityEngine;

public class Example : MonoBehaviour {

    public Texture mainTexture;  // Set this texture in the inspector

    void Start ()
    {
            GetComponent<Renderer>().material.SetTexture("_MainTex", mainTexture);
    }
}

If you’re still getting an error doing it this way, show us the error and the code you’re using, so we can see what might be going wrong.

3

Tx is read from disk and I want to assign it to Skybox.

My code is currently

Texture Tx;

// Reading from disk

RenderSettings.skybox.SetTexture("_Tex",Tx);

Error:
Error assigning 2D texture to CUBE texture property ‘_Tex’: Dimensions must match
UnityEngine.Material:SetTexture (string,UnityEngine.Texture)

at the line RenderSettings.skybox.SetTexture(“_Tex”,Tx)

Also my skybox, and its Material in the Assets become white.

This happens even if I load the original image of the material.

Instead if I use

Texture Tx;

// Reading from disk

RenderSettings.skybox.SetTexture("_MainTex",Tx);

I have no error but nothing happens

4

So you Texture that you want assign is Cubemap?

5

The texture originally assigned has TextureShape=Cube. The one I want to assign probably no: I load it with UnityWebRequest, get a Texture object.
At this point I suppose I should set TextureShape=Cube in the new one too, but I failed.
I’ve read examples online that use TextureImporter which is part of UnityEditor though, so it wouldn’t work compiled.

Actually I noticed that UnityWebRequest returns a Texture2D but I assign it in a Texture.