My attempt at a smarter tile manager

 Removes TileSets and queues tiles individually
 Uses a priority queue to determine which tiles to render first
 Stops rendering the front tile page if we are prepping the back one
 Limits queue spam by tracking which tiles are already in the queue

Change-Id: I2f2c9539e0d8a421ac7f1f4cb80ee831b9894293

1 files changed, 5 insertions, 0 deletions

diff --git a/WebCore/platform/graphics/android/BaseTile.h b/WebCore/platform/graphics/android/BaseTile.h
index c50f6f5..709e3cf 100644
--- a/WebCore/platform/graphics/android/BaseTile.h
+++ b/WebCore/platform/graphics/android/BaseTile.h
@@ -72,6 +72,7 @@ public:
 
     void reserveTexture();
     void setUsedLevel(int);
+    int usedLevel();
     bool isTileReady();
     void draw(float transparency, SkRect& rect);
 
@@ -89,6 +90,8 @@ public:
     void markAsDirty(const unsigned int pictureCount,
                      const SkRegion& dirtyArea);
     bool isDirty();
+    bool isRepaintPending();
+    void setRepaintPending(bool pending);
     void setUsable(bool usable);
     float scale() const { return m_scale; }
     void setScale(float scale);
@@ -114,6 +117,8 @@ private:
     float m_scale;
     // used to signal that the that the tile is out-of-date and needs to be redrawn
     bool m_dirty;
+    // used to signal that a repaint is pending
+    bool m_repaintPending;
     // used to signal whether or not the draw can use this tile.
     bool m_usable;
     // stores the id of the latest picture from webkit that caused this tile to