1 files changed, 1 insertions, 0 deletions
diff --git a/Assets/uGUI-2017.1/UnityEngine.UI/UI/Core/GraphicRaycaster.cs b/Assets/uGUI-2017.1/UnityEngine.UI/UI/Core/GraphicRaycaster.cs
index bc65cbb..2582204 100644
--- a/Assets/uGUI-2017.1/UnityEngine.UI/UI/Core/GraphicRaycaster.cs
+++ b/Assets/uGUI-2017.1/UnityEngine.UI/UI/Core/GraphicRaycaster.cs
@@ -79,6 +79,7 @@ namespace UnityEngine.UI
             if (canvas == null)
                 return;
 
+            // 拿到canvas下的所有graphic
             var canvasGraphics = GraphicRegistry.GetGraphicsForCanvas(canvas);
             if (canvasGraphics == null || canvasGraphics.Count == 0)
                 return;