OpenGL Programming Guide: The Official Guide to Learning OpenGL, Version 4.3, Eighth Edition

Controlling the Appearance of Points

Various controls exist to allow the appearance of points to be tuned by your application. These parameters are set using glPointParameterf() or glPointParameteri().

void glPointParameter{if}(GLenum pname, TYPE param);void glPointParameter{if}v(GLenum pname, const TYPE *param);

Set the point parameter specified by pname to the value(s) specified by param. pname must be GL_POINT_SPRITE_COORD_ORIGIN or GL_POINT_FADE_THRESHOLD_SIZE. If pname is GL_POINT_SPRITE_COORD_ORIGIN, param must be one of GL_LOWER_LEFT or GL_UPPER_LEFT (or the address of a variable containing one of these values). If pname is GL_POINT_FADE_THRESHOLD_SIZE, param must be a floating point quantity greater than or equal to zero (or the address ...