C SPECIFICATION

       XVisualInfo glXGetVisualFromFBConfig( Display *dp )
       XVisualInfo * glXGetVisualFromFBConfig( Display *,
                                               GLXFBConfig GLXFBConfig )

PARAMETERS

       Specifies the connection to the X server.

       GLXFBConfig  Specifies the GLX frame buffer configuration.

DESCRIPTION

       If GLXFBConfig 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 ver-
       sion 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 GLXFBConfig is not a valid GLXFBConfig.

SEE ALSO

       glXGetFBConfigAttrib, glXChooseFBConfig, glXChooseVisual, glXGetConfig




                                                  GLXGETVISUALFROMFBCONFIG(3G)