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diff --git a/ovr_sdk_win_23.0.0/LibOVRKernel/Src/Util/Util_Direct3D.h b/ovr_sdk_win_23.0.0/LibOVRKernel/Src/Util/Util_Direct3D.h
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+/************************************************************************************
+
+Filename    :   Util_Direct3D.h
+Content     :   Shared code for Direct3D
+Created     :   Oct 14, 2014
+Authors     :   Chris Taylor
+
+Copyright   :   Copyright (c) Facebook Technologies, LLC and its affiliates. All rights reserved.
+
+Licensed under the Oculus Master SDK License Version 1.0 (the "License");
+you may not use the Oculus VR Rift SDK except in compliance with the License,
+which is provided at the time of installation or download, or which
+otherwise accompanies this software in either electronic or hard copy form.
+
+You may obtain a copy of the License at
+
+https://developer.oculus.com/licenses/oculusmastersdk-1.0
+
+Unless required by applicable law or agreed to in writing, the Oculus VR SDK
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+************************************************************************************/
+
+#ifndef OVR_Util_Direct3D_h
+#define OVR_Util_Direct3D_h
+
+#if defined(_WIN32)
+
+// Include Windows correctly first before implicitly including it below
+#include "Kernel/OVR_String.h"
+#include "Kernel/OVR_Win32_IncludeWindows.h"
+
+// Direct3D 11
+#include <D3D11Shader.h>
+#include <d3dcompiler.h>
+
+#if _MSC_VER >= 1800
+// Visual Studio 2013+ support newer D3D/DXGI headers.
+#define OVR_D3D11_VER 2
+#include <d3d11_2.h>
+#define OVR_DXGI_VER 3
+#include <dxgi1_3.h> // Used in place of 1.2 for IDXGIFactory2 debug version (when available)
+#elif _MSC_VER >= 1700
+// Visual Studio 2012+ only supports older D3D/DXGI headers.
+#define OVR_D3D11_VER 1
+#include <d3d11_1.h>
+#else
+// Visual Studio 2010+ only supports original D3D/DXGI headers.
+#define OVR_D3D11_VER 1
+#include <d3d11.h>
+#endif
+
+namespace OVR {
+namespace D3DUtil {
+
+String GetWindowsErrorString(HRESULT hr);
+
+//-----------------------------------------------------------------------------
+// Helper macros for verifying HRESULT values from Direct3D API calls
+//
+// These will assert on failure in debug mode, and in release or debug mode
+// these functions will report the file and line where the error occurred,
+// and what the error code was to the log at Error-level.
+
+// Assert on HRESULT failure
+bool VerifyHRESULT(const char* file, int line, HRESULT hr);
+
+#define OVR_D3D_CHECK(hr) OVR::D3DUtil::VerifyHRESULT(__FILE__, __LINE__, hr)
+
+// Internal implementation of the OVR_D3D_CHECK_RET family of functions.
+#define OVR_D3D_CHECK_RET_IMPL(hr, returnExpression) \
+  {                                                  \
+    if (!OVR_D3D_CHECK(hr)) {                        \
+      returnExpression                               \
+    }                                                \
+  }
+
+// Returns provided value on failure.
+// Example usage:
+//     size_t Func() {
+//         . . .
+//         HRESULT hr = Device->QueryInterface(__uuidof(IDXGIDevice), (void
+//         **)&pDXGIDevice.GetRawRef());
+//         OVR_D3D_CHECK_RET_VAL(hr, 0);
+//         . . .
+//     }
+#define OVR_D3D_CHECK_RET_VAL(hr, failureValue) OVR_D3D_CHECK_RET_IMPL(hr, return failureValue;)
+
+// Returns void on failure
+// Example usage:
+//     void Func() {
+//         . . .
+//         HRESULT hr = Device->QueryInterface(__uuidof(IDXGIDevice), (void
+//         **)&pDXGIDevice.GetRawRef());
+//         OVR_D3D_CHECK_RET(hr);
+//         . . .
+//     }
+#define OVR_D3D_CHECK_RET(hr) OVR_D3D_CHECK_RET_IMPL(hr, return;)
+
+// Returns false on failure
+// Example usage:
+//     bool Func() {
+//         . . .
+//         HRESULT hr = Device->QueryInterface(__uuidof(IDXGIDevice), (void
+//         **)&pDXGIDevice.GetRawRef());
+//         OVR_D3D_CHECK_RET_FALSE(hr);
+//         . . .
+//     }
+#define OVR_D3D_CHECK_RET_FALSE(hr) OVR_D3D_CHECK_RET_IMPL(hr, return false;)
+
+// Returns nullptr on failure
+// Example usage:
+//     void* Func() {
+//         . . .
+//         HRESULT hr = Device->QueryInterface(__uuidof(IDXGIDevice), (void
+//         **)&pDXGIDevice.GetRawRef());
+//         OVR_D3D_CHECK_RET_NULL(hr);
+//         . . .
+//     }
+#define OVR_D3D_CHECK_RET_NULL(hr) OVR_D3D_CHECK_RET_IMPL(hr, return nullptr;)
+
+// If the result is a failure, it will write the exact compile error to the error log
+void LogD3DCompileError(HRESULT hr, ID3DBlob* errorBlob);
+
+#if defined(OVR_BUILD_DEBUG)
+
+// Enable this to track down double-tagging object warnings from D3D.
+#define OVR_D3D_TRACK_DOUBLE_TAGGING
+
+#if defined(OVR_D3D_TRACK_DOUBLE_TAGGING)
+#define OVR_D3D_CHECK_REUSE(child)               \
+  char tagReuseBuffer[1024];                     \
+  UINT reuseSize = (UINT)sizeof(tagReuseBuffer); \
+  OVR_ASSERT(FAILED(child->GetPrivateData(WKPDID_D3DDebugObjectName, &reuseSize, tagReuseBuffer)));
+#else
+#define OVR_D3D_CHECK_REUSE(child) (void(0))
+#endif
+
+#define OVR_D3D_TAG_OBJECT(child)                                                            \
+  if (child) {                                                                               \
+    OVR_D3D_CHECK_REUSE(child);                                                              \
+    const char* tagName = OVR_STRINGIZE(child) " " __FILE__ "(" OVR_STRINGIZE(__LINE__) ")"; \
+    UINT tagDataSize = (UINT)strlen(tagName);                                                \
+    HRESULT tagHR = child->SetPrivateData(WKPDID_D3DDebugObjectName, tagDataSize, tagName);  \
+    OVR_D3D_CHECK(tagHR);                                                                    \
+  }
+
+#else // !Debug:
+
+#define OVR_D3D_TAG_OBJECT(child) (void(0))
+
+#endif // !Debug
+} // namespace D3DUtil
+} // namespace OVR
+
+#endif // _WIN32
+
+#endif // OVR_Util_Direct3D_h