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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 includes all the necessary GL headers and implements some useful
+// utilities.
+
+#ifndef GPU_COMMAND_BUFFER_SERVICE_GL_UTILS_H_
+#define GPU_COMMAND_BUFFER_SERVICE_GL_UTILS_H_
+
+#include <GL/glew.h>
+#if defined(OS_WIN)
+#include <GL/wglew.h>
+#endif
+#include <build/build_config.h>
+
+#define GL_GLEXT_PROTOTYPES
+
+// Define this for extra GL error debugging (slower).
+// #define GL_ERROR_DEBUGGING
+#ifdef GL_ERROR_DEBUGGING
+#define CHECK_GL_ERROR() do { \
+ GLenum gl_error = glGetError(); \
+ LOG_IF(ERROR, gl_error != GL_NO_ERROR) << "GL Error :" << gl_error; \
+ } while (0)
+#else // GL_ERROR_DEBUGGING
+#define CHECK_GL_ERROR() void(0)
+#endif // GL_ERROR_DEBUGGING
+
+#endif // GPU_COMMAND_BUFFER_SERVICE_GL_UTILS_H_