From fbc7922ec87298601ba6a3be1bd9f83ffaf9a233 Mon Sep 17 00:00:00 2001
From: Mathias Agopian <mathias@google.com>
Date: Thu, 23 Feb 2012 21:20:01 -0800
Subject: [PATCH] workaround for an issue where the screen would flicker
 sometimes

bug: 6020860
Change-Id: I97807db66b66c5f4dcbed0df79d5d257cfc7c0bd
---
 services/surfaceflinger/SurfaceFlinger.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 68521138f..9d821dc47 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -1000,6 +1000,12 @@ void SurfaceFlinger::composeSurfaces(const Region& dirty)
         drawWormhole();
     }
 
+    // FIXME: workaroud for b/6020860
+    glEnable(GL_SCISSOR_TEST);
+    glScissor(0,0,0,0);
+    glClear(GL_COLOR_BUFFER_BIT);
+    // end-workaround
+
     /*
      * and then, render the layers targeted at the framebuffer
      */