glXGetVisualFromFBConfig(3G)				OpenGL Reference - GLX

NAME    [Toc]    [Back]

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

C SPECIFICATION    [Toc]    [Back]

     XVisualInfo * glXGetVisualFromFBConfig( Display *dpy,
					     GLXFBConfig config	)

PARAMETERS    [Toc]    [Back]

     dpy     Specifies the connection to the X server.

     config  Specifies the GLX frame buffer configuration.

DESCRIPTION    [Toc]    [Back]

     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    [Toc]    [Back]

     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    [Toc]    [Back]

     Returns NULL if config is not a valid GLXFBConfig.

SEE ALSO    [Toc]    [Back]

     glXGetFBConfigAttrib, glXChooseFBConfig, glXChooseVisual, glXGetConfig


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