Unity MeshRenderer.materials數組索引超出範圍

Question

我從未使用子網格，但我幾乎讓它們工作。第二次嘗試設置meshRenderer材質的mainTexture時，出現'數組索引超出範圍'錯誤。我將subMeshCount設置爲2，並試圖在索引0和索引1處應用2個材質。我無法理解索引1如何超出範圍。是否有一些代碼可以告訴渲染器需要多少材料？感謝您的時間。

編輯：錯誤地解釋錯誤日誌。

void Update() { 

    List<Vector3> vertices = new List<Vector3>(); 
    List<int> dirtTriangles = new List<int>(); 
    List<int> grassTriangles = new List<int>(); 
    List<Vector2> uvList = new List<Vector2>(); 
    mesh.Clear(); 

    //draw faces 
    addFace(mesh,uvList,vertices,dirtTriangles,DIR.front); 
    addFace (mesh,uvList,vertices,dirtTriangles,DIR.back); 
    addFace (mesh,uvList,vertices,dirtTriangles,DIR.left); 
    addFace (mesh,uvList,vertices,dirtTriangles,DIR.right); 
    addFace (mesh,uvList,vertices,grassTriangles,DIR.top); 
    addFace (mesh,uvList,vertices,dirtTriangles,DIR.bottom); 

    mesh.vertices = vertices.ToArray(); 
    //mesh.triangles = triangles.ToArray(); 

    mesh.subMeshCount = 2; 
    mesh.SetTriangles (dirtTriangles.ToArray(),0); 
    mesh.SetTriangles (grassTriangles.ToArray(),1); 
    mesh.RecalculateNormals(); 
    mesh.uv = uvList.ToArray(); 

    //set materials 
    meshRenderer.materials[0].mainTexture = Resources.Load("block_speckled") as Texture; 
    meshRenderer.materials[1].mainTexture = Resources.Load("block_grass") as Texture; //error 

    var shader = Shader.Find ("Particles/Alpha Blended"); 
    meshRenderer.materials[0].shader = shader; //not sure if this is correct either 
    meshRenderer.materials[1].shader = shader; 
} 

Answer 1

試試這個：

meshRenderer.materials = new[] 
{ 
    new Material(Shader.Find("Your/Shader")), 
    new Material(Shader.Find("Your/Shader")) 
} 

meshRenderer.materials[0].mainTexture = Resources.Load("AssetName") as Texture; 
meshRenderer.materials[1].mainTexture = Resources.Load("AssetName") as Texture;