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diff --git a/progs/redbook/cubemap.c b/progs/redbook/cubemap.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 Unpublished - rights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.
- */
-
-/* cubemap.c
- *
- * This program demonstrates cube map textures.
- * Six different colored checker board textures are
- * created and applied to a lit sphere.
- *
- * Pressing the 'f' and 'b' keys translate the viewer
- * forward and backward.
- */
-
-#include <GL/glut.h>
-#include <stdlib.h>
-#include <stdio.h>
-
-#define imageSize 4
-static GLubyte image1[imageSize][imageSize][4];
-static GLubyte image2[imageSize][imageSize][4];
-static GLubyte image3[imageSize][imageSize][4];
-static GLubyte image4[imageSize][imageSize][4];
-static GLubyte image5[imageSize][imageSize][4];
-static GLubyte image6[imageSize][imageSize][4];
-
-static GLdouble ztrans = 0.0;
-
-static void makeImages(void)
-{
- int i, j, c;
-
- for (i = 0; i < imageSize; i++) {
- for (j = 0; j < imageSize; j++) {
- c = ( ((i & 0x1) == 0) ^ ((j & 0x1) == 0) ) * 255;
- image1[i][j][0] = (GLubyte) c;
- image1[i][j][1] = (GLubyte) c;
- image1[i][j][2] = (GLubyte) c;
- image1[i][j][3] = (GLubyte) 255;
-
- image2[i][j][0] = (GLubyte) c;
- image2[i][j][1] = (GLubyte) c;
- image2[i][j][2] = (GLubyte) 0;
- image2[i][j][3] = (GLubyte) 255;
-
- image3[i][j][0] = (GLubyte) c;
- image3[i][j][1] = (GLubyte) 0;
- image3[i][j][2] = (GLubyte) c;
- image3[i][j][3] = (GLubyte) 255;
-
- image4[i][j][0] = (GLubyte) 0;
- image4[i][j][1] = (GLubyte) c;
- image4[i][j][2] = (GLubyte) c;
- image4[i][j][3] = (GLubyte) 255;
-
- image5[i][j][0] = (GLubyte) 255;
- image5[i][j][1] = (GLubyte) c;
- image5[i][j][2] = (GLubyte) c;
- image5[i][j][3] = (GLubyte) 255;
-
- image6[i][j][0] = (GLubyte) c;
- image6[i][j][1] = (GLubyte) c;
- image6[i][j][2] = (GLubyte) 255;
- image6[i][j][3] = (GLubyte) 255;
- }
- }
-}
-
-static void init(void)
-{
- GLfloat diffuse[4] = {1.0, 1.0, 1.0, 1.0};
-
- glClearColor (0.0, 0.0, 0.0, 0.0);
- glEnable(GL_DEPTH_TEST);
- glShadeModel(GL_SMOOTH);
-
- makeImages();
- glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
- glTexParameteri(GL_TEXTURE_CUBE_MAP_EXT, GL_TEXTURE_WRAP_S, GL_REPEAT);
- glTexParameteri(GL_TEXTURE_CUBE_MAP_EXT, GL_TEXTURE_WRAP_T, GL_REPEAT);
- glTexParameteri(GL_TEXTURE_CUBE_MAP_EXT, GL_TEXTURE_WRAP_R, GL_REPEAT);
- glTexParameteri(GL_TEXTURE_CUBE_MAP_EXT, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
- glTexParameteri(GL_TEXTURE_CUBE_MAP_EXT, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
- glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X_EXT, 0, GL_RGBA, imageSize,
- imageSize, 0, GL_RGBA, GL_UNSIGNED_BYTE, image1);
- glTexImage2D(GL_TEXTURE_CUBE_MAP_NEGATIVE_X_EXT, 0, GL_RGBA, imageSize,
- imageSize, 0, GL_RGBA, GL_UNSIGNED_BYTE, image4);
- glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_Y_EXT, 0, GL_RGBA, imageSize,
- imageSize, 0, GL_RGBA, GL_UNSIGNED_BYTE, image2);
- glTexImage2D(GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_EXT, 0, GL_RGBA, imageSize,
- imageSize, 0, GL_RGBA, GL_UNSIGNED_BYTE, image5);
- glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_Z_EXT, 0, GL_RGBA, imageSize,
- imageSize, 0, GL_RGBA, GL_UNSIGNED_BYTE, image3);
- glTexImage2D(GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_EXT, 0, GL_RGBA, imageSize,
- imageSize, 0, GL_RGBA, GL_UNSIGNED_BYTE, image6);
- glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_NORMAL_MAP_EXT);
- glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_NORMAL_MAP_EXT);
- glTexGeni(GL_R, GL_TEXTURE_GEN_MODE, GL_NORMAL_MAP_EXT);
- glEnable(GL_TEXTURE_GEN_S);
- glEnable(GL_TEXTURE_GEN_T);
- glEnable(GL_TEXTURE_GEN_R);
-
- glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
-
- glEnable(GL_TEXTURE_CUBE_MAP_EXT);
- glEnable(GL_LIGHTING);
- glEnable(GL_LIGHT0);
- glEnable(GL_AUTO_NORMAL);
- glEnable(GL_NORMALIZE);
- glMaterialfv (GL_FRONT, GL_DIFFUSE, diffuse);
-}
-
-static void display(void)
-{
- glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
- glPushMatrix ();
- glTranslatef (0.0, 0.0, ztrans);
- glutSolidSphere (5.0, 20, 10);
- glPopMatrix ();
- glutSwapBuffers();
-}
-
-static void reshape(int w, int h)
-{
- glViewport(0, 0, (GLsizei) w, (GLsizei) h);
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- gluPerspective(40.0, (GLfloat) w/(GLfloat) h, 1.0, 300.0);
- glMatrixMode(GL_MODELVIEW);
- glLoadIdentity();
- glTranslatef(0.0, 0.0, -20.0);
-}
-
-static void keyboard (unsigned char key, int x, int y)
-{
- switch (key) {
- case 'f':
- ztrans = ztrans - 0.2;
- glutPostRedisplay();
- break;
- case 'b':
- ztrans = ztrans + 0.2;
- glutPostRedisplay();
- break;
- case 27:
- exit(0);
- break;
- default:
- break;
- }
-}
-
-int main(int argc, char** argv)
-{
- glutInit(&argc, argv);
- glutInitDisplayMode (GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);
- glutInitWindowSize(400, 400);
- glutInitWindowPosition(100, 100);
- glutCreateWindow (argv[0]);
- init ();
- glutDisplayFunc(display);
- glutReshapeFunc(reshape);
- glutKeyboardFunc(keyboard);
- glutMainLoop();
- return 0;
-}
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