glutInit(3GLUT) 						       GLUT							   glutInit(3GLUT)

NAME

       glutInit - initialize the GLUT library.

SYNTAX

       void glutInit(int *argcp, char **argv);

ARGUMENTS

       argcp	 A  pointer  to  the  program's  unmodified  argc variable from main.  Upon return, the value pointed to by argcp will be updated,
		 because glutInit extracts any command line options intended for the GLUT library.

       argv	 The program's unmodified argv variable from main. Like argcp, the data for argv will be updated  because  glutInit  extracts  any
		 command line options understood by the GLUT library.

DESCRIPTION

       glutInit  will initialize the GLUT library and negotiate a session with the window system. During this process, glutInit may cause the ter-
       mination of the GLUT program with an error message to the user if GLUT cannot be properly initialized.  Examples of this situation  include
       the failure to connect to the window system, the lack of window system support for OpenGL, and invalid command line options.

       glutInit also processes command line options, but the specific options parse are window system dependent.

X IMPLEMENTATION NOTES

       The X Window System specific options parsed by glutInit are as follows:

       -display DISPLAY
	       Specify the X server to connect to. If not specified, the value of the DISPLAY environment variable is used.

       -geometry WxH+X+Y
	       Determines  where  window's  should be created on the screen. The parameter following -geometry should be formatted as a standard X
	       geometry specification.	The effect of using this option is to change the GLUT initial size and initial position  the  same  as	if
	       glutInitWindowSize or glutInitWindowPosition were called directly.

       -iconic Requests all top-level windows be created in an iconic state.

       -indirect
	       Force the use of indirect OpenGL rendering contexts.

       -direct Force the use of direct OpenGL rendering contexts (not all GLX implementations support direct rendering contexts). A fatal error is
	       generated if direct rendering is not supported by the OpenGL implementation.

	       If neither -indirect or -direct are used to force a particular behavior, GLUT will attempt to use direct rendering if possible  and
	       otherwise fallback to indirect rendering.

       -gldebug
	       After  processing  callbacks  and/or  events, check if there are any OpenGL errors by calling glGetError.  If an error is reported,
	       print out a warning by looking up the error code with gluErrorString.  Using this option is helpful in  detecting  OpenGL  run-time
	       errors.

       -sync   Enable synchronous X protocol transactions.  This option makes it easier to track down potential   X protocol errors.

SEE ALSO

       glutCreateWindow, glutInitWindowPosition, glutInitWindowSize, glutMainLoop

AUTHOR

       Mark J. Kilgard (mjk@nvidia.com)

GLUT
									3.7							   glutInit(3GLUT)