GL_ARB_timer_query
http://www.opengl.org/registry/specs/ARB/timer_query.txt
GL_ARB_timer_query

	GL_TIME_ELAPSED 0x88BF
	GL_TIMESTAMP 0x8E28
	void glGetQueryObjecti64v (GLuint id, GLenum pname, GLint64* params)
	void glGetQueryObjectui64v (GLuint id, GLenum pname, GLuint64* params)
	void glQueryCounter (GLuint id, GLenum target)
