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+/*
+ * Copyright 2009, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+// This file contains definitions of handy methods and macros used by the
+// O3D DirectX code.
+
+#ifndef O3D_CORE_WIN_D3D9_UTILS_D3D9_H_
+#define O3D_CORE_WIN_D3D9_UTILS_D3D9_H_
+
+#include <d3d9.h>
+#include <dxerr9.h>
+#include "base/logging.h"
+#include "core/cross/stream.h"
+
+#define HR(x) ::o3d::VerifyHResult((x), __FILE__, __LINE__, #x)
+
+namespace o3d {
+
+class Field;
+
+inline bool VerifyHResult(HRESULT hr, const char* file, int line,
+                          const char* call) {
+  if (FAILED(hr)) {
+    DLOG(ERROR) << "DX Error in file " << file
+                << " line " << line << L": "
+                << DXGetErrorString9(hr) << L": " << call;
+    return false;
+  }
+  return true;
+}
+
+union Float2DWord {
+  float my_float;
+  DWORD my_dword;
+};
+
+D3DDECLTYPE DX9DataType(const Field& stream);
+D3DDECLUSAGE DX9UsageType(Stream::Semantic semantic);
+Stream::Semantic SemanticFromDX9UsageType(D3DDECLUSAGE usage);
+
+}  // namespace o3d
+
+#endif  // O3D_CORE_WIN_D3D9_UTILS_D3D9_H_