From 6a15a784f494ffa19eb08bad72328302f61c3499 Mon Sep 17 00:00:00 2001
From: Julien Brianceau <jbrianceau@nds.com>
Date: Thu, 13 Sep 2012 11:05:53 +0200
Subject: [PATCH] qpa: avoid useless resize in DirectFB platform
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Check current size before resizing QDirectFbBackingStore through
its resize() method to avoid useless deallocation/reallocation.

Change-Id: Idc32eb20d3d3cac988fa9dd2feb80910303f5763
Reviewed-by: Samuel Rødal <samuel.rodal@nokia.com>
---
 src/plugins/platforms/directfb/qdirectfbbackingstore.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/plugins/platforms/directfb/qdirectfbbackingstore.cpp b/src/plugins/platforms/directfb/qdirectfbbackingstore.cpp
index 95e3609..203cd8c 100644
--- a/src/plugins/platforms/directfb/qdirectfbbackingstore.cpp
+++ b/src/plugins/platforms/directfb/qdirectfbbackingstore.cpp
@@ -82,6 +82,12 @@ void QDirectFbBackingStore::flush(QWindow *, const QRegion &region, const QPoint
 
 void QDirectFbBackingStore::resize(const QSize &size, const QRegion& reg)
 {
+    Q_UNUSED(reg);
+
+    if ((m_pmdata->width() == size.width()) &&
+        (m_pmdata->height() == size.height()))
+        return;
+
     QDirectFbBlitter *blitter = new QDirectFbBlitter(size, m_dfbSurface.data());
     m_pmdata->setBlittable(blitter);
 }
-- 
2.7.4