Adding a new material to the materials array

Questions & Answers
1 
GameObject selectedObject = Selection.activeGameObject;

selectedObject.renderer.Materials[1] = new Material (Shader.Find(" Diffuse"));

Using this gives me an "index out of range" error. Assigning to sharedMaterials gives me the same error. What is the proper way to add a new material to the materials array?

*I want to keep the material in index 0 as well, so I will have two materials, one in index 0 and one in index 1.

2

You can't assign to materials[1], because that slot in memory doesn't exist, if there is only one material. (Only materials[0] exists.) You need to resize the materials arrays somehow. Personally, I'd do it with the array constructor, like this*:

Selection.activeGameObject.renderer.sharedMaterials = new Material[] {
    Selection.activeGameObject.renderer.sharedMaterial,
    new Material(Shader.Find(" Diffuse"))
};
  • I probably wouldn't use Shader.Find, actually, as I never seem to have a use for it, but if you do, then this is what I recommend. ;-)
3

Hi i have a problem too and this answer is very useful but i want to add texture to new matrial, How can i do this ?