All IRIS GL picking functions have OpenGL equivalents, with the exception of clearhitcode. The following table lists the IRIS GL picking functions and their equivalent OpenGL functions.
| IRIS GL Function | OpenGL Function | Meaning |
|---|---|---|
| clearhitcode | Not supported. | Clears global variable and hitcode. |
| pick select |
glRenderMode(GL_SELECT) | Switch to selection or picking mode. |
| endpick endselect |
glRenderMode(GL_RENDER) | Switch to rendering mode. |
| picksize | gluPickMatrix | Set the return array. |
| initnames | glInitNames | |
| pushname popname |
glPushName | |
| loadname | glLoadName |
For more information on picking, see gluPickMatrix.