From a70f30add391525d9a30e61b3df3f9834e804b17 Mon Sep 17 00:00:00 2001
From: James McDonnell <jmcdonnell@blackberry.com>
Date: Mon, 5 Mar 2018 14:44:19 -0500
Subject: Flush the initial clear blit with SCREEN_WAIT_IDLE

Without it, the clear runs asynchronously and screen may clear
pixels _after_ Qt updates them.

Change-Id: I0c0844676d8a4387439a2f818ee08942ccaf6b08
Reviewed-by: Dan Cape <dcape@qnx.com>
Reviewed-by: Janne Koskinen <janne.p.koskinen@qt.io>
Reviewed-by: Rafael Roquetto <rafael.roquetto@kdab.com>
(cherry picked from commit 8bcb8b069e9a35226c1465265d4d716c864dde54)
---
 src/plugins/platforms/qnx/qqnxrasterwindow.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/plugins/platforms/qnx/qqnxrasterwindow.cpp b/src/plugins/platforms/qnx/qqnxrasterwindow.cpp
index 7f11de228e..06c5f36b09 100644
--- a/src/plugins/platforms/qnx/qqnxrasterwindow.cpp
+++ b/src/plugins/platforms/qnx/qqnxrasterwindow.cpp
@@ -157,7 +157,7 @@ QQnxBuffer &QQnxRasterWindow::renderBuffer()
                                 "Failed to clear window buffer");
         }
 
-        Q_SCREEN_CHECKERROR(screen_flush_blits(screen()->nativeContext(), 0),
+        Q_SCREEN_CHECKERROR(screen_flush_blits(screen()->nativeContext(), SCREEN_WAIT_IDLE),
                             "Failed to flush blits");
 
         // Use the first available render buffer
-- 
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