From 4c0f1a51d7d3b51a1f241aa700f9ed5b3b23998c Mon Sep 17 00:00:00 2001
From: Nicolas Roard <nicolas@android.com>
Date: Wed, 26 Jan 2011 14:46:30 -0800
Subject: Fix the flickering bug. We return any previous textures used by the
 layer until we get the new one ready.

bug:3391157 bug:3393571
Change-Id: I81dce23f79be788c3c0bfb0ccfd54d08156dfe3f
---
 WebCore/platform/graphics/android/LayerTexture.h | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

(limited to 'WebCore/platform/graphics/android/LayerTexture.h')

diff --git a/WebCore/platform/graphics/android/LayerTexture.h b/WebCore/platform/graphics/android/LayerTexture.h
index fb1b9fb..042422d 100644
--- a/WebCore/platform/graphics/android/LayerTexture.h
+++ b/WebCore/platform/graphics/android/LayerTexture.h
@@ -38,15 +38,22 @@ class LayerTexture : public BackedDoubleBufferedTexture {
         : BackedDoubleBufferedTexture(w, h, config)
         , m_id(0)
         , m_scale(1)
-        , m_pictureUsed(-1)
+        , m_pictureUsed(0)
+        , m_ready(false)
     {}
     virtual ~LayerTexture() {};
 
     int id() { return m_id; }
     void setId(int id) { m_id = id; }
+    bool ready() { return m_ready; }
 
     unsigned int pictureUsed() { return m_pictureUsed; }
-    void setPictureUsed(unsigned pictureUsed) { m_pictureUsed = pictureUsed; }
+    void setPictureUsed(unsigned pictureUsed)
+    {
+          if (!m_ready)
+              m_ready = true;
+          m_pictureUsed = pictureUsed;
+    }
     void setRect(const IntRect& r) { m_rect = r; }
     IntRect& rect() { return m_rect; }
     float scale() { return m_scale; }
@@ -58,6 +65,7 @@ class LayerTexture : public BackedDoubleBufferedTexture {
     IntRect m_rect;
     float m_scale;
     unsigned int m_pictureUsed;
+    bool m_ready;
 };
 
 } // namespace WebCore
-- 
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