Manpages OpenGL - glXGetVisualFromFBConfig

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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.