renderer.material.mainTexture.name

//Thanks to Bunny83 from Germany for help

var transf : Transform;

class hitmat1 {
     var enabled : boolean = true;
     var texturehit : String;
     @HideInInspector
     var tranglind : int;
     @HideInInspector
     var Layer : LayerMask = 1;
}

var hitmat1 : hitmat1 = hitmat1();

function Update() {
     var hit : RaycastHit;
     if (Physics.Raycast(transf.position, transf.TransformDirection(Vector3.forward), hit, 2, hitmat1.Layer)) {
      ind = hit.triangleIndex;
      if (hitmat1.tranglind != ind && hitmat1.enabled) {
       hitmat1.tranglind = ind;
       var go1 = hit.collider.gameObject;
       var mee = go1.GetComponent(MeshFilter).mesh;
       var mre = go1.GetComponent(MeshRenderer);
       if (mee && mre) {
        if (go1.renderer.materials.Length > 1) {
         var triangles = mee.triangles;
         for (var submesh = 0; submesh < mee.subMeshCount; submesh++) {
          var indices = mee.GetTriangles(submesh);
          for (var i = 0; i < indices.Length; i += 3) {
           if (indices[i] == triangles[ind * 3] && indices[i + 1] == triangles[ind * 3 + 1] && indices[i + 2] == triangles[ind * 3 + 2]) {
            hitmat1.texturehit = mre.materials[submesh].mainTexture.name.ToLower();
            i = indices.Length;
            submesh = mee.subMeshCount;
            }else{
             hitmat1.texturehit = "Null";
           }
          }
         }
         }else{
          mtexx = go1.renderer.material.mainTexture;
          if (mtexx)
           hitmat1.texturehit = mtexx.name.ToLower();
           else
           hitmat1.texturehit = "Null";
        }
       }
      }
     }
}