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diff --git a/progs/redbook/multisamp.c b/progs/redbook/multisamp.c
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-/*
- * Copyright (c) 1993-2003, 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 Unpublished - rights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.
- * 1500 Crittenden Lane
- * Mountain View, CA 94043
- * United State of America
- *
- * OpenGL(R) is a registered trademark of Silicon Graphics, Inc.
- */
-
-/*
- * multisamp.c
- * This program draws shows how to use multisampling to
- * draw anti-aliased geometric primitives. The same
- * display list, a pinwheel of triangles and lines of
- * varying widths, is rendered twice. Multisampling is
- * enabled when the left side is drawn. Multisampling is
- * disabled when the right side is drawn.
- *
- * Pressing the 'b' key toggles drawing of the checkerboard
- * background. Antialiasing is sometimes easier to see
- * when objects are rendered over a contrasting background.
- */
-#include <GL/glut.h>
-#include <stdlib.h>
-#include <stdio.h>
-
-static int bgtoggle = 1;
-
-/*
- * Print out state values related to multisampling.
- * Create display list with "pinwheel" of lines and
- * triangles.
- */
-static void init(void)
-{
- static GLint buf[1], sbuf[1];
- int i, j;
-
- glClearColor(0.0, 0.0, 0.0, 0.0);
- glGetIntegerv (GL_SAMPLE_BUFFERS_ARB, buf);
- printf ("number of sample buffers is %d\n", buf[0]);
- glGetIntegerv (GL_SAMPLES_ARB, sbuf);
- printf ("number of samples is %d\n", sbuf[0]);
-
- glNewList (1, GL_COMPILE);
- for (i = 0; i < 19; i++) {
- glPushMatrix();
- glRotatef(360.0*(float)i/19.0, 0.0, 0.0, 1.0);
- glColor3f (1.0, 1.0, 1.0);
- glLineWidth((i%3)+1.0);
- glBegin (GL_LINES);
- glVertex2f (0.25, 0.05);
- glVertex2f (0.9, 0.2);
- glEnd ();
- glColor3f (0.0, 1.0, 1.0);
- glBegin (GL_TRIANGLES);
- glVertex2f (0.25, 0.0);
- glVertex2f (0.9, 0.0);
- glVertex2f (0.875, 0.10);
- glEnd ();
- glPopMatrix();
- }
- glEndList ();
-
- glNewList (2, GL_COMPILE);
- glColor3f (1.0, 0.5, 0.0);
- glBegin (GL_QUADS);
- for (i = 0; i < 16; i++) {
- for (j = 0; j < 16; j++) {
- if (((i + j) % 2) == 0) {
- glVertex2f (-2.0 + (i * 0.25), -2.0 + (j * 0.25));
- glVertex2f (-2.0 + (i * 0.25), -1.75 + (j * 0.25));
- glVertex2f (-1.75 + (i * 0.25), -1.75 + (j * 0.25));
- glVertex2f (-1.75 + (i * 0.25), -2.0 + (j * 0.25));
- }
- }
- }
- glEnd ();
- glEndList ();
-}
-
-/* Draw two sets of primitives, so that you can
- * compare the user of multisampling against its absence.
- *
- * This code enables antialiasing and draws one display list
- * and disables and draws the other display list
- */
-static void display(void)
-{
- glClear(GL_COLOR_BUFFER_BIT);
-
- if (bgtoggle)
- glCallList (2);
-
- glEnable (GL_MULTISAMPLE_ARB);
- glPushMatrix();
- glTranslatef (-1.0, 0.0, 0.0);
- glCallList (1);
- glPopMatrix();
-
- glDisable (GL_MULTISAMPLE_ARB);
- glPushMatrix();
- glTranslatef (1.0, 0.0, 0.0);
- glCallList (1);
- glPopMatrix();
- glutSwapBuffers();
-}
-
-static void reshape(int w, int h)
-{
- glViewport(0, 0, w, h);
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- if (w <= (2 * h))
- gluOrtho2D (-2.0, 2.0,
- -2.0*(GLfloat)h/(GLfloat)w, 2.0*(GLfloat)h/(GLfloat)w);
- else
- gluOrtho2D (-2.0*(GLfloat)w/(GLfloat)h,
- 2.0*(GLfloat)w/(GLfloat)h, -2.0, 2.0);
- glMatrixMode(GL_MODELVIEW);
- glLoadIdentity();
-}
-
-static void keyboard(unsigned char key, int x, int y)
-{
- switch (key) {
- case 'b':
- case 'B':
- bgtoggle = !bgtoggle;
- glutPostRedisplay();
- break;
- case 27: /* Escape Key */
- exit(0);
- default:
- break;
- }
-}
-
-/* Main Loop
- * Open window with initial window size, title bar,
- * RGBA display mode, and handle input events.
- */
-int main(int argc, char** argv)
-{
- glutInit(&argc, argv);
- glutInitDisplayMode (GLUT_DOUBLE | GLUT_RGB | GLUT_MULTISAMPLE);
- glutInitWindowSize (600, 300);
- glutCreateWindow (argv[0]);
- init();
- glutReshapeFunc (reshape);
- glutKeyboardFunc (keyboard);
- glutDisplayFunc (display);
- glutMainLoop();
- return 0;
-}
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