I'd like to add a custom material to a line that I'm drawing in Unity (using Vectrosity). I'm using Unity's built-in "Unlit/Texture" shader. When I drag a texture from my Resources directory into the "Texture" slot in my shader, everything looks good:

Unity editor with texture selected

But when I click play, the texture disappears:

Unity editor with texture unselected

and my line doesn't show up in my game. However, if I drag the texture to the shader's texture slot after I click play, the texture seems to "stick" and my line renders as expected:

Line with texture applied

But once I stop and start the game, the texture again disappears.

Why is Unity kicking out my texture when my game starts? Is there something wrong with my texture? I don't see any warnings or errors in the console. I've tried with numerous different textures, and they all do the same thing.

I'm using Unity 5.6.1f1.


It seems that some script is removing the texture from the material at runtime.

I suggest you check Awake, OnEnable and Start on your scripts, apart from an odd Unity bug, the culprit should be there somewhere.

You should search for a Material type variable, and then look if there's a materialVariableName.mainTexture = someValue;. When someValue is null, the material's texture is obviously reset.

Edit: I forgot, you should check for materialVariableName.SetTexture("_MainTex", someValue); too.

  • \$\begingroup\$ Thanks, I think this was it. I changed how I was initializing my Vectrosity line, and now my material doesn't lose its texture on play. \$\endgroup\$ – Nathan Friend Jun 18 '17 at 13:52

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