NodeScript+ 导入了个 UI Extend

Signed-off-by: TRADER_FOER <lhf190@outlook.com>

Assets/com.unity.uiextensions/Runtime/Scripts/Utilities/ShaderLibrary.cs

@@ -0,0 +1,27 @@
+/// Credit SimonDarksideJ
+
+using System.Collections.Generic;
+
+namespace UnityEngine.UI.Extensions
+{
+    public static class ShaderLibrary
+    {
+        public static Dictionary<string, Shader> shaderInstances = new Dictionary<string, Shader>();
+        public static Shader[] preLoadedShaders;
+
+        public static Shader GetShaderInstance(string shaderName)
+        {
+            if (shaderInstances.ContainsKey(shaderName))
+            {
+                return shaderInstances[shaderName];
+            }
+
+            var newInstance = Shader.Find(shaderName);
+            if (newInstance != null)
+            {
+                shaderInstances.Add(shaderName, newInstance);
+            }
+            return newInstance;
+        }
+    }
+}