1GL_EXT_point_parameters 2https://www.khronos.org/registry/OpenGL/extensions/EXT/EXT_point_parameters.txt 3GL_EXT_point_parameters 4 5 GL_POINT_SIZE_MIN_EXT 0x8126 6 GL_POINT_SIZE_MAX_EXT 0x8127 7 GL_POINT_FADE_THRESHOLD_SIZE_EXT 0x8128 8 GL_DISTANCE_ATTENUATION_EXT 0x8129 9 void glPointParameterfEXT (GLenum pname, GLfloat param) 10 void glPointParameterfvEXT (GLenum pname, const GLfloat* params) 11