1 files changed, 100 insertions, 0 deletions
diff --git a/gfx/angle/src/libANGLE/renderer/d3d/d3d11/Trim11.cpp b/gfx/angle/src/libANGLE/renderer/d3d/d3d11/Trim11.cpp
new file mode 100755
index 000000000..29185a9d9
--- /dev/null
+++ b/gfx/angle/src/libANGLE/renderer/d3d/d3d11/Trim11.cpp
@@ -0,0 +1,100 @@
+//
+// Copyright (c) 2014 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+// Trim11.cpp: Trim support utility class.
+
+#include "libANGLE/renderer/d3d/d3d11/Trim11.h"
+#include "libANGLE/renderer/d3d/d3d11/Renderer11.h"
+#include "libANGLE/renderer/d3d/d3d11/renderer11_utils.h"
+
+#if defined (ANGLE_ENABLE_WINDOWS_STORE)
+#include <wrl.h>
+#include <wrl/wrappers/corewrappers.h>
+#include <windows.applicationmodel.core.h>
+using namespace Microsoft::WRL;
+using namespace Microsoft::WRL::Wrappers;
+using namespace ABI::Windows::ApplicationModel;
+using namespace ABI::Windows::ApplicationModel::Core;
+using namespace ABI::Windows::Foundation;
+using namespace ABI::Windows::Foundation::Collections;
+#endif
+
+namespace rx
+{
+
+Trim11::Trim11(rx::Renderer11 *renderer)
+    : mRenderer(renderer)
+{
+    bool result = true;
+    result = registerForRendererTrimRequest();
+    ASSERT(result);
+}
+
+Trim11::~Trim11()
+{
+    unregisterForRendererTrimRequest();
+}
+
+void Trim11::trim()
+{
+    if (!mRenderer)
+    {
+        return;
+    }
+
+#if defined (ANGLE_ENABLE_WINDOWS_STORE)
+    ID3D11Device* device = mRenderer->getDevice();
+    IDXGIDevice3 *dxgiDevice3 = d3d11::DynamicCastComObject<IDXGIDevice3>(device);
+    if (dxgiDevice3)
+    {
+        dxgiDevice3->Trim();
+    }
+    SafeRelease(dxgiDevice3);
+#endif
+}
+
+bool Trim11::registerForRendererTrimRequest()
+{
+#if defined (ANGLE_ENABLE_WINDOWS_STORE)
+    ICoreApplication* coreApplication = nullptr;
+    HRESULT result = GetActivationFactory(HStringReference(RuntimeClass_Windows_ApplicationModel_Core_CoreApplication).Get(), &coreApplication);
+    if (SUCCEEDED(result))
+    {
+        auto suspendHandler = Callback<IEventHandler<SuspendingEventArgs*>>(
+            [this](IInspectable*, ISuspendingEventArgs*) -> HRESULT
+        {
+            trim();
+            return S_OK;
+        });
+        result = coreApplication->add_Suspending(suspendHandler.Get(), &mApplicationSuspendedEventToken);
+    }
+    SafeRelease(coreApplication);
+
+    if (FAILED(result))
+    {
+        return false;
+    }
+#endif
+    return true;
+}
+
+void Trim11::unregisterForRendererTrimRequest()
+{
+#if defined (ANGLE_ENABLE_WINDOWS_STORE)
+    if (mApplicationSuspendedEventToken.value != 0)
+    {
+        ICoreApplication* coreApplication = nullptr;
+        if (SUCCEEDED(GetActivationFactory(HStringReference(RuntimeClass_Windows_ApplicationModel_Core_CoreApplication).Get(), &coreApplication)))
+        {
+            coreApplication->remove_Suspending(mApplicationSuspendedEventToken);
+        }
+        mApplicationSuspendedEventToken.value = 0;
+        SafeRelease(coreApplication);
+    }
+#endif
+}
+
+}