From 25d56b5c873dbba5e9c7a75b72305ff81c309914 Mon Sep 17 00:00:00 2001
From: Matthew Leibowitz <mattleibow@live.com>
Date: Sat, 14 Jan 2017 22:38:57 -0500
Subject: [PATCH] Android also requires that the stencil buffer be cleared

---
 .../SkiaSharp.Views.Android/SKGLSurfaceViewRenderer.cs          | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/source/SkiaSharp.Views/SkiaSharp.Views.Android/SKGLSurfaceViewRenderer.cs b/source/SkiaSharp.Views/SkiaSharp.Views.Android/SKGLSurfaceViewRenderer.cs
index f6a7aa74bf..6254a13892 100644
--- a/source/SkiaSharp.Views/SkiaSharp.Views.Android/SKGLSurfaceViewRenderer.cs
+++ b/source/SkiaSharp.Views/SkiaSharp.Views.Android/SKGLSurfaceViewRenderer.cs
@@ -17,6 +17,8 @@ public abstract class SKGLSurfaceViewRenderer : Java.Lang.Object, GLSurfaceView.
 
 		public void OnDrawFrame(IGL10 gl)
 		{
+			GLES10.GlClear(GLES10.GlStencilBufferBit);
+
 			// create the surface
 			using (var surface = SKSurface.Create(context, renderTarget))
 			{