From d07e14add74e017b52ab2371efeea1aa4ea10ced Mon Sep 17 00:00:00 2001
From: chai <chaifix@163.com>
Date: Sat, 8 May 2021 23:15:13 +0800
Subject: +init

---
 .../UI/Core/Graphics/GraphicRebuildTracker.cs      | 38 ++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 Assets/uGUI-2017.1/UnityEngine.UI/UI/Core/Graphics/GraphicRebuildTracker.cs

(limited to 'Assets/uGUI-2017.1/UnityEngine.UI/UI/Core/Graphics/GraphicRebuildTracker.cs')

diff --git a/Assets/uGUI-2017.1/UnityEngine.UI/UI/Core/Graphics/GraphicRebuildTracker.cs b/Assets/uGUI-2017.1/UnityEngine.UI/UI/Core/Graphics/GraphicRebuildTracker.cs
new file mode 100644
index 0000000..c081269
--- /dev/null
+++ b/Assets/uGUI-2017.1/UnityEngine.UI/UI/Core/Graphics/GraphicRebuildTracker.cs
@@ -0,0 +1,38 @@
+#if UNITY_EDITOR
+using System.Collections.Generic;
+using UnityEngine.UI.Collections;
+
+namespace UnityEngine.UI
+{
+    public static class GraphicRebuildTracker
+    {
+        static IndexedSet<Graphic> m_Tracked = new IndexedSet<Graphic>();
+        static bool s_Initialized;
+
+        public static void TrackGraphic(Graphic g)
+        {
+            if (!s_Initialized)
+            {
+                CanvasRenderer.onRequestRebuild += OnRebuildRequested;
+                s_Initialized = true;
+            }
+
+            m_Tracked.AddUnique(g);
+        }
+
+        public static void UnTrackGraphic(Graphic g)
+        {
+            m_Tracked.Remove(g);
+        }
+
+        static void OnRebuildRequested()
+        {
+            StencilMaterial.ClearAll();
+            for (int i = 0; i < m_Tracked.Count; i++)
+            {
+                m_Tracked[i].OnRebuildRequested();
+            }
+        }
+    }
+}
+#endif // if UNITY_EDITOR
-- 
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