Vector2をVector4に変換します
Vector2は暗黙的にVector4に変換できます。(Z,W軸は0が設定されます)
	function Start () {
		// Shader vectors are always Vector4s.
		// The value here is converted to a Vector4 from a Vector2.
		var value : Vector2 = Vector2.one;
		renderer.material.SetVector("_SomeVariable", value);
	}
      using UnityEngine; using System.Collections; public class ExampleClass : MonoBehaviour { void Start() { Vector2 value = Vector2.one; renderer.material.SetVector("_SomeVariable", value); } }
import UnityEngine import System.Collections public class ExampleClass(MonoBehaviour): def Start() as void: value as Vector2 = Vector2.one renderer.material.SetVector('_SomeVariable', value)