From 2903db0469487944f035aff1c44e69605d48fa8f Mon Sep 17 00:00:00 2001
From: Andrew Knight <andrew.knight@theqtcompany.com>
Date: Mon, 1 Dec 2014 09:57:15 +0200
Subject: winrt: Fix Windows Store Certification

WinRT requires that IDXGIDevice3::Trim() is called on application
suspend in order to pass Store Certification.

Task-number: QTBUG-38481
Change-Id: Ia3cb5d3f6a2db8f11e4bfa4fd5c7791e18d6c36d
Reviewed-by: Maurice Kalinowski <maurice.kalinowski@theqtcompany.com>
---
 src/plugins/platforms/winrt/qwinrtscreen.cpp | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'src/plugins/platforms/winrt')

diff --git a/src/plugins/platforms/winrt/qwinrtscreen.cpp b/src/plugins/platforms/winrt/qwinrtscreen.cpp
index fadcd01b06..612a50f6b7 100644
--- a/src/plugins/platforms/winrt/qwinrtscreen.cpp
+++ b/src/plugins/platforms/winrt/qwinrtscreen.cpp
@@ -37,6 +37,9 @@
 #include <EGL/eglext.h>
 #include <d3d11.h>
 #include <dxgi1_2.h>
+#ifndef Q_OS_WINPHONE
+#include <dxgi1_3.h>
+#endif
 
 #include "qwinrtbackingstore.h"
 #include "qwinrtinputcontext.h"
@@ -1113,6 +1116,16 @@ HRESULT QWinRTScreen::onActivated(ICoreWindow *, IWindowActivatedEventArgs *args
 
 HRESULT QWinRTScreen::onSuspended(IInspectable *, ISuspendingEventArgs *)
 {
+#ifndef Q_OS_WINPHONE
+    Q_D(QWinRTScreen);
+    ComPtr<ID3D11Device> d3dDevice;
+    const EGLBoolean ok = eglQuerySurfacePointerANGLE(d->eglDisplay, EGL_NO_SURFACE, EGL_DEVICE_EXT, (void **)d3dDevice.GetAddressOf());
+    if (ok && d3dDevice) {
+        ComPtr<IDXGIDevice3> dxgiDevice;
+        if (SUCCEEDED(d3dDevice.As(&dxgiDevice)))
+            dxgiDevice->Trim();
+    }
+#endif
     QWindowSystemInterface::handleApplicationStateChanged(Qt::ApplicationSuspended);
     QWindowSystemInterface::flushWindowSystemEvents();
     return S_OK;
-- 
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