glXGetVisualFromFBConfig(3G)

NAME
     glXGetVisualFromFBConfig - return visual that is associated with the
     frame buffer configuration


C SPECIFICATION
     XVisualInfo * glXGetVisualFromFBConfig( Display *dpy,
                                             GLXFBConfig config )


PARAMETERS
     dpy     Specifies the connection to the X server.

     config  Specifies the GLX frame buffer configuration.

DESCRIPTION
     If config is a valid GLX frame buffer configuration and it has an
     associated X Visual then information describing that visual is returned;
     otherwise NULL is returned. Use XFree to free the data returned.

NOTES
     glXGetVisualFromFBConfig is available only if the GLX version is 1.3 or
     greater.

     If the GLX version is 1.1 or 1.0, the GL version must be 1.0.  If the GLX
     version is 1.2, then the GL version must be 1.1.  If the GLX version is
     1.3, then the GL version must be 1.2.

     XVisualInfo is defined in Xutil.h.  It is a structure that includes
     visual, visualID, screen, and depth elements.

ERRORS
     Returns NULL if config is not a valid GLXFBConfig.


SEE ALSO
     glXGetFBConfigAttrib, glXChooseFBConfig, glXChooseVisual, glXGetConfig