[NUI] Change clipping mode of ScrollableBase (#2354)

- ClipChildren clipping mode uses stencil buffer.
 - But, scrollableBase is always pretended as rectangular shape so we can change it to ClipToBoundingBox that uses scissor.
 - Usually, Scissor is better than stencil buffer for the performance.

Signed-off-by: Seungho Baek <sbsh.baek@samsung.com>

diff --git a/src/Tizen.NUI.Components/Controls/ScrollableBase.cs b/src/Tizen.NUI.Components/Controls/ScrollableBase.cs
index cd50bd6..6ea4122 100755 (executable)
--- a/src/Tizen.NUI.Components/Controls/ScrollableBase.cs
+++ b/src/Tizen.NUI.Components/Controls/ScrollableBase.cs
@@ -615,7 +615,7 @@ namespace Tizen.NUI.Components
             mPanGestureDetector.AddDirection(PanGestureDetector.DirectionVertical);
             mPanGestureDetector.Detected += OnPanGestureDetected;
 
-            ClippingMode = ClippingModeType.ClipChildren;
+            ClippingMode = ClippingModeType.ClipToBoundingBox;
 
             //Default Scrolling child
             ContentContainer = new View()