glXGetVisualFromFBConfig — return visual that is associated with the frame buffer configuration

C Specification

XVisualInfo * glXGetVisualFromFBConfig(Display * dpy,
 GLXFBConfig config);



Specifies the connection to the X server.


Specifies the GLX frame buffer configuration.


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.


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.


Returns NULL if config is not a valid GLXFBConfig.

See Also

glXGetFBConfigAttrib, glXChooseFBConfig, glXChooseVisual, glXGetConfig


Copyright © 1991-2006 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see