| /* |
| * Copyright (c) 1993-1997, Silicon Graphics, Inc. |
| * ALL RIGHTS RESERVED |
| * Permission to use, copy, modify, and distribute this software for |
| * any purpose and without fee is hereby granted, provided that the above |
| * copyright notice appear in all copies and that both the copyright notice |
| * and this permission notice appear in supporting documentation, and that |
| * the name of Silicon Graphics, Inc. not be used in advertising |
| * or publicity pertaining to distribution of the software without specific, |
| * written prior permission. |
| * |
| * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS" |
| * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE, |
| * INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR |
| * FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON |
| * GRAPHICS, INC. BE LIABLE TO YOU OR ANYONE ELSE FOR ANY DIRECT, |
| * SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY |
| * KIND, OR ANY DAMAGES WHATSOEVER, INCLUDING WITHOUT LIMITATION, |
| * LOSS OF PROFIT, LOSS OF USE, SAVINGS OR REVENUE, OR THE CLAIMS OF |
| * THIRD PARTIES, WHETHER OR NOT SILICON GRAPHICS, INC. HAS BEEN |
| * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON |
| * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE |
| * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE. |
| * |
| * US Government Users Restricted Rights |
| * Use, duplication, or disclosure by the Government is subject to |
| * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph |
| * (c)(1)(ii) of the Rights in Technical Data and Computer Software |
| * clause at DFARS 252.227-7013 and/or in similar or successor |
| * clauses in the FAR or the DOD or NASA FAR Supplement. |
| * Unpublished-- rights reserved under the copyright laws of the |
| * United States. Contractor/manufacturer is Silicon Graphics, |
| * Inc., 2011 N. Shoreline Blvd., Mountain View, CA 94039-7311. |
| * |
| * OpenGL(R) is a registered trademark of Silicon Graphics, Inc. |
| */ |
| |
| /* |
| * hello.c |
| * This is a simple, introductory OpenGL program. |
| */ |
| #include <stdlib.h> |
| #include <GL/glut.h> |
| |
| static void display(void) |
| { |
| /* clear all pixels */ |
| glClear (GL_COLOR_BUFFER_BIT); |
| |
| /* draw white polygon (rectangle) with corners at |
| * (0.25, 0.25, 0.0) and (0.75, 0.75, 0.0) |
| */ |
| glColor3f (1.0, 1.0, 1.0); |
| glBegin(GL_POLYGON); |
| glVertex3f (0.25, 0.25, 0.0); |
| glVertex3f (0.75, 0.25, 0.0); |
| glVertex3f (0.75, 0.75, 0.0); |
| glVertex3f (0.25, 0.75, 0.0); |
| glEnd(); |
| |
| /* don't wait! |
| * start processing buffered OpenGL routines |
| */ |
| glFlush (); |
| } |
| |
| static void init (void) |
| { |
| /* select clearing color */ |
| glClearColor (0.0, 0.0, 0.0, 0.0); |
| |
| /* initialize viewing values */ |
| glMatrixMode(GL_PROJECTION); |
| glLoadIdentity(); |
| glOrtho(0.0, 1.0, 0.0, 1.0, -1.0, 1.0); |
| } |
| |
| static void |
| key(unsigned char k, int x, int y) |
| { |
| switch (k) { |
| case 27: /* Escape */ |
| exit(0); |
| break; |
| default: |
| return; |
| } |
| glutPostRedisplay(); |
| } |
| |
| /* |
| * Declare initial window size, position, and display mode |
| * (single buffer and RGBA). Open window with "hello" |
| * in its title bar. Call initialization routines. |
| * Register callback function to display graphics. |
| * Enter main loop and process events. |
| */ |
| int main(int argc, char** argv) |
| { |
| glutInit(&argc, argv); |
| glutInitDisplayMode (GLUT_SINGLE | GLUT_RGB); |
| glutInitWindowSize (250, 250); |
| glutInitWindowPosition (100, 100); |
| glutCreateWindow ("hello"); |
| init (); |
| glutDisplayFunc(display); |
| glutKeyboardFunc(key); |
| glutMainLoop(); |
| return 0; /* ANSI C requires main to return int. */ |
| } |