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diff --git a/gfx/layers/d3d11/DeviceAttachmentsD3D11.h b/gfx/layers/d3d11/DeviceAttachmentsD3D11.h
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+++ b/gfx/layers/d3d11/DeviceAttachmentsD3D11.h
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_gfx_layers_d3d11_DeviceAttachmentsD3D11_h
+#define mozilla_gfx_layers_d3d11_DeviceAttachmentsD3D11_h
+
+#include "mozilla/EnumeratedArray.h"
+#include "mozilla/RefPtr.h"
+#include "mozilla/gfx/DeviceManagerDx.h"
+#include "mozilla/layers/CompositorTypes.h"
+#include "mozilla/layers/SyncObject.h"
+#include <d3d11.h>
+#include <dxgi1_2.h>
+
+namespace mozilla {
+namespace layers {
+
+struct ShaderBytes;
+
+class DeviceAttachmentsD3D11 final {
+  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(DeviceAttachmentsD3D11);
+
+ public:
+  static RefPtr<DeviceAttachmentsD3D11> Create(ID3D11Device* aDevice);
+
+  bool IsValid() const { return mInitialized; }
+  const nsCString& GetFailureId() const {
+    MOZ_ASSERT(!IsValid());
+    return mInitFailureId;
+  }
+
+  RefPtr<ID3D11InputLayout> mInputLayout;
+
+  RefPtr<ID3D11Buffer> mVertexBuffer;
+
+  RefPtr<ID3D11VertexShader> mVSQuadShader;
+
+  RefPtr<ID3D11PixelShader> mSolidColorShader;
+  RefPtr<ID3D11PixelShader> mRGBAShader;
+  RefPtr<ID3D11PixelShader> mRGBShader;
+  RefPtr<ID3D11PixelShader> mYCbCrShader;
+  RefPtr<ID3D11PixelShader> mNV12Shader;
+  RefPtr<ID3D11Buffer> mPSConstantBuffer;
+  RefPtr<ID3D11Buffer> mVSConstantBuffer;
+  RefPtr<ID3D11RasterizerState> mRasterizerState;
+  RefPtr<ID3D11SamplerState> mLinearSamplerState;
+  RefPtr<ID3D11SamplerState> mPointSamplerState;
+
+  RefPtr<ID3D11BlendState> mPremulBlendState;
+  RefPtr<ID3D11BlendState> mPremulCopyState;
+  RefPtr<ID3D11BlendState> mNonPremulBlendState;
+  RefPtr<ID3D11BlendState> mDisabledBlendState;
+
+  RefPtr<SyncObjectHost> mSyncObject;
+
+  void SetDeviceReset() { mDeviceReset = true; }
+  bool IsDeviceReset() const { return mDeviceReset; }
+
+ private:
+  explicit DeviceAttachmentsD3D11(ID3D11Device* device);
+  ~DeviceAttachmentsD3D11();
+
+  bool Initialize();
+  bool CreateShaders();
+  bool InitSyncObject();
+
+  void InitVertexShader(const ShaderBytes& aShader,
+                        RefPtr<ID3D11VertexShader>& aDest) {
+    InitVertexShader(aShader, getter_AddRefs(aDest));
+  }
+  void InitPixelShader(const ShaderBytes& aShader,
+                       RefPtr<ID3D11PixelShader>& aDest) {
+    InitPixelShader(aShader, getter_AddRefs(aDest));
+  }
+
+  void InitVertexShader(const ShaderBytes& aShader, ID3D11VertexShader** aOut);
+  void InitPixelShader(const ShaderBytes& aShader, ID3D11PixelShader** aOut);
+
+  bool Failed(HRESULT hr, const char* aContext);
+
+ private:
+  // Only used during initialization.
+  RefPtr<ID3D11Device> mDevice;
+  bool mContinueInit;
+  bool mInitialized;
+  bool mDeviceReset;
+  nsCString mInitFailureId;
+};
+
+}  // namespace layers
+}  // namespace mozilla
+
+#endif  // mozilla_gfx_layers_d3d11_DeviceAttachmentsD3D11_h