GL_EXT_point_parameters
https://www.khronos.org/registry/OpenGL/extensions/EXT/EXT_point_parameters.txt
GL_EXT_point_parameters

	GL_POINT_SIZE_MIN_EXT 0x8126
	GL_POINT_SIZE_MAX_EXT 0x8127
	GL_POINT_FADE_THRESHOLD_SIZE_EXT 0x8128
	GL_DISTANCE_ATTENUATION_EXT 0x8129
	void glPointParameterfEXT (GLenum pname, GLfloat param)
	void glPointParameterfvEXT (GLenum pname, const GLfloat* params)