From cca925e0207160475bd670ae855235eab4cfdf40 Mon Sep 17 00:00:00 2001
From: Keith Winstein <keithw@mit.edu>
Date: Mon, 16 Apr 2012 03:06:11 -0400
Subject: [PATCH] Reset prediction engine after size has changed (i.e. after
 Resize is applied)

---
 src/frontend/terminaloverlay.cc | 7 +++++++
 src/frontend/terminaloverlay.h  | 3 +++
 2 files changed, 10 insertions(+)

diff --git a/src/frontend/terminaloverlay.cc b/src/frontend/terminaloverlay.cc
index 1f83924b9..06cce3b7b 100644
--- a/src/frontend/terminaloverlay.cc
+++ b/src/frontend/terminaloverlay.cc
@@ -388,6 +388,13 @@ void PredictionEngine::cull( const Framebuffer &fb )
     return;
   }
 
+  if ( (last_height != fb.ds.get_height())
+       || (last_width != fb.ds.get_width()) ) {
+    last_height = fb.ds.get_height();
+    last_width = fb.ds.get_width();
+    reset();
+  }
+
   uint64_t now = timestamp();
 
   /* control srtt_trigger with hysteresis */
diff --git a/src/frontend/terminaloverlay.h b/src/frontend/terminaloverlay.h
index a0880a68c..d4bde26a9 100644
--- a/src/frontend/terminaloverlay.h
+++ b/src/frontend/terminaloverlay.h
@@ -191,6 +191,8 @@ namespace Overlay {
 
     unsigned int send_interval;
 
+    int last_height, last_width;
+
   public:
     enum DisplayPreference {
       Always,
@@ -227,6 +229,7 @@ namespace Overlay {
 			       glitch_trigger( 0 ),
 			       last_quick_confirmation( 0 ),
 			       send_interval( 250 ),
+			       last_height( 0 ), last_width( 0 ),
 			       display_preference( Adaptive )
     {
     }