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GLGETSTRING(3G)                                                                              GLGETSTRING(3G)



NAME
       glGetString - 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 particu-lar particular
                           lar configuration of a hardware platform.  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 recognize 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-recog-nition platform-recognition
       nition 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 character.)

       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)