Question Why material's texture saved change?

Hi~
I'm using Unity2021.3.12f1.
I found a issue.

I was change the material's texture at runtime by code:

Code (CSharp):

1. Texture pic = await requestRes.LoadLocal<Texture>("uv4x4") as Texture;
2.         if (pic)
3.         {
4.             cube.GetComponent<MeshRenderer>().sharedMaterial.mainTexture = pic;
5.         }

When I stop the game, the material's texture(Base Map) has saved.

Why? Is a new feature? How can I fix this? I don't wanna anything saved after game running.

Thanks~

 

Not a new feature. If you change the values of anything that isn't a scene level object, those changes persist between play sessions. Unity only backs up and restores scenes during play mode.

You probably want to Instantiate() your material before you modify it. Just remember to Destroy() it after.

 

You need to use

material

instead of

sharedMaterial

. When you modify

material

at runtime a copy of the original material is created and modified, but when you modify

sharedMaterial

the material asset is modified which like @spiney199 pointed out will not be restored back to its original state when you leave play mode.

https://docs.unity3d.com/ScriptReference/Renderer-material.html

 

Thank you! It works~

 

I got it. Thank you!

 

Wanted to note that this only happens in the editor in play mode. When you make a build, a build can't modify the original asset, so the sharedMaterial will always revert back to its original state each time you run the build.