OpenGL has no command to draw a single point. Otherwise, porting point functions is straightforward. The following table lists IRIS GL functions for drawing points and their equivalent OpenGL functions.
| IRIS GL Function | OpenGL Function | Meaning |
|---|---|---|
| pnt | — | Draw a single point. |
| bgnpoint, endpoint | glBegin(GL_POINTS), glEnd | Interpret vertices as points. |
| pntsize | glPointSize | Set point size in pixels. |
| pntsmooth | glEnable(GL_POINT_SMOOTH) | Turn on point antialiasing. (For more information on point antialiasing, see Porting Antialiasing Functions.) |
For information about related get functions, see glPointSize.