glgetstring(3g) [redhat 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)

GLGETSTRING(3G) 						   OpenGL Manual						   GLGETSTRING(3G)

NAME

       glGetString - return a string describing the current GL connection

C SPECIFICATION

       const GLubyte* glGetString(GLenum name);

C SPECIFICATION

       const GLubyte* glGetStringi(GLenum name, GLuint index);

PARAMETERS

       name
	   Specifies a symbolic constant, one of GL_VENDOR, GL_RENDERER, GL_VERSION, or GL_SHADING_LANGUAGE_VERSION. Additionally, glGetStringi
	   accepts the GL_EXTENSIONS token.

       index
	   For glGetStringi, specifies the index of the string to return.

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 platform. It does not
	   change from release to release.

       GL_VERSION

	   Returns a version or release number.

       GL_SHADING_LANGUAGE_VERSION

	   Returns a version or release number for the shading language.

       glGetStringi returns a pointer to a static string indexed by index.  name can be one of the following:

       GL_EXTENSIONS

	   For glGetStringi only, returns the extension string supported by the implementation at index.

       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.

       The GL_VERSION and GL_SHADING_LANGUAGE_VERSION strings begin with a version number. The version number uses one of these forms:

       major_number.minor_numbermajor_number.minor_number.release_number

       Vendor-specific information may follow the version number. Its format 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.  glGetString always returns a compatible version number. The release number always
       describes the server.

ERRORS

       GL_INVALID_ENUM is generated if name is not an accepted value.

       GL_INVALID_VALUE is generated by glGetStringi if index is outside the valid range for indexed state name.

COPYRIGHT

       Copyright (C) 1991-2006 Silicon Graphics, Inc. Copyright (C) 2010 Khronos Group. 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							   GLGETSTRING(3G)