Graphics.Rendering.OpenGL.Raw.EXT.PointParameters
glGetEXTPointParameters
gl_EXT_point_parameters
gl_DISTANCE_ATTENUATION_EXT
gl_POINT_FADE_THRESHOLD_SIZE_EXT
gl_POINT_SIZE_MAX_EXT
gl_POINT_SIZE_MIN_EXT
glPointParameterfEXT
glPointParameterfvEXT