| Value | Meaning |
|---|---|
| None0 | no platform |
| Egl1 | the EGL platform used primarily with the X11, wayland and android window systems as well as on embedded Linux |
| Glx2 | the GLX platform used primarily with the X11 window system |
| Wgl4 | the WGL platform used primarily on Windows |
| Cgl8 | the CGL platform used primarily on OS X |
| Eagl16 | the EAGL platform used primarily on iOS |
| Any4294967295 | any OpenGL platform |