From 22bda3360e675d1bac9961769710755c75d22a36 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Morten=20Johan=20S=C3=B8rvig?= <morten.sorvig@digia.com>
Date: Tue, 29 Jan 2013 10:24:36 +0100
Subject: [PATCH] Set correct image format for non-alpha windows.

Use QImage::Format_RGB32.

Change-Id: I4be6b6271034be8dad5cfcb85f89fe33a817b78f
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Gunnar Sletta <gunnar.sletta@digia.com>
---
 src/plugins/platforms/cocoa/qcocoabackingstore.mm | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/plugins/platforms/cocoa/qcocoabackingstore.mm b/src/plugins/platforms/cocoa/qcocoabackingstore.mm
index d3d8369c9b..31726268f1 100644
--- a/src/plugins/platforms/cocoa/qcocoabackingstore.mm
+++ b/src/plugins/platforms/cocoa/qcocoabackingstore.mm
@@ -73,7 +73,9 @@ QPaintDevice *QCocoaBackingStore::paintDevice()
         }
 #endif
 
-        m_qImage = QImage(m_requestedSize * scaleFactor, QImage::Format_ARGB32_Premultiplied);
+        QImage::Format format = window()->format().hasAlpha()
+                ? QImage::Format_ARGB32_Premultiplied : QImage::Format_RGB32;
+        m_qImage = QImage(m_requestedSize * scaleFactor, format);
         m_qImage.setDevicePixelRatio(scaleFactor);
     }
     return &m_qImage;