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