CODEWITHSUNDEEP
c#unity-game-engine
dot
dot

Reputation: 496

Set generated Texture2D on terrain in Unity?

I created a simple Texture2D in Unity as follows (simplified example): 

   Texture2D texture2d = new Texture2D(256,256);
   for (int h = 0; h < texture2d.height; h++) {
        for (int w = 0; w < texture2d.width ; w++) {
            texture2d.SetPixel(w,h, Color.green);
        }
    }

How can I set this created Texture2D at a existing terrain, as ground texture?

Upvotes: 0

Views: 982

Answers (1)

user3814958
user3814958

Reputation:

Because the built-in Terrain shaders don't have a _MainTexture property, you have to use a custom one: e.g. http://wiki.unity3d.com/index.php/TerrainFourLayerToon (place in a .shader file)

from there you just need the appropriate code

//your code here
texture2d.Apply(); //missing in your code!

Material mat = new Material(Shader.Find("Terrain/Four Layer Toon Compat")); //from link
mat.SetTexture("_MainTex" , texture2d); //set the texture properties of the shader
mat.SetTexture("_MainTex2", texture2d);
mat.SetTexture("_MainTex3", texture2d);
mat.SetTexture("_MainTex4", texture2d);

Terrain terr = this.gameObject.GetComponent<Terrain>(); //get the terrain
terr.materialType = Terrain.MaterialType.Custom; //tell the terrain you want to manually assign its material
terr.materialTemplate = mat; //finally assign the material (and texture)

this code should work in Unity 5

If you are curious what any of these functions do, check https://docs.unity3d.com/Manual/SL-Reference.html for ShaderLab, CG, and the .shader filetype

and http://docs.unity3d.com/ScriptReference/ under UnityEngine -> Classes for GameObject, Material, Shader, Terrain, and Texture2D.

Upvotes: 1

Related Questions