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glgetstring(3g) [xfree86 man page]

GLGETSTRING(3G) 														   GLGETSTRING(3G)

NAME

       - return a string describing the current GL connection

C SPECIFICATION

       const GLubyte* glGetString( GLenum name )

PARAMETERS

       name  Specifies a symbolic constant, one of GL_VENDOR, GL_RENDERER, GL_VERSION, or GL_EXTENSIONS.

DESCRIPTION

       glGetString returns a pointer to a static string describing some aspect of the current GL connection.  name can be one of the following:

       GL_VENDOR	   Returns the company responsible for this GL implementation.	This name does not change from release to release.

       GL_RENDERER	   Returns  the  name  of the renderer.  This name is typically specific to a particular configuration of a hardware plat-
			   form.  It does not change from release to release.

       GL_VERSION	   Returns a version or release number.

       GL_EXTENSIONS	   Returns a space-separated list of supported extensions to GL.

       Because the GL does not include queries for the performance characteristics of an implementation, some applications are written	to  recog-
       nize  known  platforms  and  modify  their  GL  usage based on known performance characteristics of these platforms.  Strings GL_VENDOR and
       GL_RENDERER together uniquely specify a platform. They do not change from release to release and should	be  used  by  platform-recognition
       algorithms.

       Some applications want to make use of features that are not part of the standard GL. These features may be implemented as extensions to the
       standard GL.  The GL_EXTENSIONS string is a space-separated list of supported GL extensions.  (Extension names never contain a space  char-
       acter.)

       The GL_VERSION string begins with a version number.  The version number uses one of these forms:

       major_number.minor_number
       major_number.minor_number.release_number

       Vendor-specific	information  may  follow  the version number. Its  depends on the implementation, but a space always separates the version
       number and the vendor-specific information.

       All strings are null-terminated.

NOTES

       If an error is generated, glGetString returns 0.

       The client and server may support different versions or extensions.  glGetString always returns a compatible  version  number  or  list	of
       extensions.  The release number always describes the server.

ERRORS

       GL_INVALID_ENUM is generated if name is not an accepted value.

       GL_INVALID_OPERATION is generated if glGetString is executed between the execution of glBegin and the corresponding execution of glEnd.

																   GLGETSTRING(3G)

Check Out this Related Man Page

GLXGETCLIENTSTRING(3G)						   OpenGL Manual					    GLXGETCLIENTSTRING(3G)

NAME

       glXGetClientString - return a string describing the client

C SPECIFICATION

       const char * glXGetClientString(Display * dpy, int name);

PARAMETERS

       dpy
	   Specifies the connection to the X server.

       name
	   Specifies which string is returned. The symbolic constants GLX_VENDOR, GLX_VERSION, and GLX_EXTENSIONS are accepted.

DESCRIPTION

       glXGetClientString returns a string describing some aspect of the client library. The possible values for name are GLX_VENDOR, GLX_VERSION,
       and GLX_EXTENSIONS. If name is not set to one of these values, glXGetClientString returns NULL. The format and contents of the vendor
       string is implementation dependent.

       The extensions string is null-terminated and contains a space-separated list of extension names. (The extension names never contain
       spaces.) If there are no extensions to GLX, then the empty string is returned.

       The version string is laid out as follows:

       <major_version.minor_version><space><vendor-specific info>

       Both the major and minor portions of the version number are of arbitrary length. The vendor-specific information is optional. However, if
       it is present, the format and contents are implementation specific.

NOTES

       glXGetClientString is available only if the GLX version is 1.1 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.

       glXGetClientString only returns information about GLX extensions supported by the client. Call glGetString() to get a list of GL extensions
       supported by the server.

SEE ALSO

       glXQueryVersion(), glXQueryExtensionsString(), glXQueryServerString()

COPYRIGHT

       Copyright (C) 1991-2006 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see
       http://oss.sgi.com/projects/FreeB/.

AUTHORS

       opengl.org

opengl.org							    06/10/2014						    GLXGETCLIENTSTRING(3G)
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