Checking for GLX Extension Availability

If you use any of the extensions to GLX, described in Chapter 9, "Extensions to GLX," you also need to check for GLX extension availability.

Querying for GLX extension support is similar to querying for OpenGL extension support with the following exceptions:

Compile time defines are found in glx.h.
To get the list of supported GLX extensions, call glXQueryExtensionsString().
GLX versions must be 1.1 or greater (no extensions to GLX 1.0 exist).

Adapt the process described in "How to Check for OpenGL Extension Availability" taking these exceptions into account.