GL_ARB_debug_output
http://www.opengl.org/registry/specs/ARB/debug_output.txt
GL_ARB_debug_output
	GL_DEBUG_OUTPUT_SYNCHRONOUS_ARB 0x8242
	GL_DEBUG_NEXT_LOGGED_MESSAGE_LENGTH_ARB 0x8243
	GL_DEBUG_CALLBACK_FUNCTION_ARB 0x8244
	GL_DEBUG_CALLBACK_USER_PARAM_ARB 0x8245
	GL_DEBUG_SOURCE_API_ARB 0x8246
	GL_DEBUG_SOURCE_WINDOW_SYSTEM_ARB 0x8247
	GL_DEBUG_SOURCE_SHADER_COMPILER_ARB 0x8248
	GL_DEBUG_SOURCE_THIRD_PARTY_ARB 0x8249
	GL_DEBUG_SOURCE_APPLICATION_ARB 0x824A
	GL_DEBUG_SOURCE_OTHER_ARB 0x824B
	GL_DEBUG_TYPE_ERROR_ARB 0x824C
	GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR_ARB 0x824D
	GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR_ARB 0x824E
	GL_DEBUG_TYPE_PORTABILITY_ARB 0x824F
	GL_DEBUG_TYPE_PERFORMANCE_ARB 0x8250
	GL_DEBUG_TYPE_OTHER_ARB 0x8251
	GL_MAX_DEBUG_MESSAGE_LENGTH_ARB 0x9143
	GL_MAX_DEBUG_LOGGED_MESSAGES_ARB 0x9144
	GL_DEBUG_LOGGED_MESSAGES_ARB 0x9145
	GL_DEBUG_SEVERITY_HIGH_ARB 0x9146
	GL_DEBUG_SEVERITY_MEDIUM_ARB 0x9147
	GL_DEBUG_SEVERITY_LOW_ARB 0x9148
	void glDebugMessageCallbackARB (GLDEBUGPROCARB callback, const void *userParam)
	void glDebugMessageControlARB (GLenum source, GLenum type, GLenum severity, GLsizei count, const GLuint* ids, GLboolean enabled)
	void glDebugMessageInsertARB (GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar* buf)
	GLuint glGetDebugMessageLogARB (GLuint count, GLsizei bufSize, GLenum* sources, GLenum* types, GLuint* ids, GLenum* severities, GLsizei* lengths, GLchar* messageLog)
	typedef void (GLAPIENTRY *GLDEBUGPROCARB)(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar* message, const void* userParam)
