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-rw-r--r--progs/redbook/texbind.c171
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diff --git a/progs/redbook/texbind.c b/progs/redbook/texbind.c
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--- a/progs/redbook/texbind.c
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-/*
- * 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- * Unpublished-- rights reserved under the copyright laws of the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.
- */
-
-/* texbind.c
- * This program demonstrates using glBindTexture() by
- * creating and managing two textures.
- */
-#include <GL/glut.h>
-#include <stdlib.h>
-#include <stdio.h>
-
-#ifdef GL_VERSION_1_1
-/* Create checkerboard texture */
-#define checkImageWidth 64
-#define checkImageHeight 64
-static GLubyte checkImage[checkImageHeight][checkImageWidth][4];
-static GLubyte otherImage[checkImageHeight][checkImageWidth][4];
-
-static GLuint texName[2];
-
-static void makeCheckImages(void)
-{
- int i, j, c;
-
- for (i = 0; i < checkImageHeight; i++) {
- for (j = 0; j < checkImageWidth; j++) {
- c = ((((i&0x8)==0)^((j&0x8)==0)))*255;
- checkImage[i][j][0] = (GLubyte) c;
- checkImage[i][j][1] = (GLubyte) c;
- checkImage[i][j][2] = (GLubyte) c;
- checkImage[i][j][3] = (GLubyte) 255;
- c = ((((i&0x10)==0)^((j&0x10)==0)))*255;
- otherImage[i][j][0] = (GLubyte) c;
- otherImage[i][j][1] = (GLubyte) 0;
- otherImage[i][j][2] = (GLubyte) 0;
- otherImage[i][j][3] = (GLubyte) 255;
- }
- }
-}
-
-static void init(void)
-{
- glClearColor (0.0, 0.0, 0.0, 0.0);
- glShadeModel(GL_FLAT);
- glEnable(GL_DEPTH_TEST);
-
- makeCheckImages();
- glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
-
- glGenTextures(2, texName);
- glBindTexture(GL_TEXTURE_2D, texName[0]);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER,
- GL_NEAREST);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
- GL_NEAREST);
- glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, checkImageWidth,
- checkImageHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE,
- checkImage);
-
- glBindTexture(GL_TEXTURE_2D, texName[1]);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
- glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
- glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, checkImageWidth,
- checkImageHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE,
- otherImage);
- glEnable(GL_TEXTURE_2D);
-}
-
-static void display(void)
-{
- glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
- glBindTexture(GL_TEXTURE_2D, texName[0]);
- glBegin(GL_QUADS);
- glTexCoord2f(0.0, 0.0); glVertex3f(-2.0, -1.0, 0.0);
- glTexCoord2f(0.0, 1.0); glVertex3f(-2.0, 1.0, 0.0);
- glTexCoord2f(1.0, 1.0); glVertex3f(0.0, 1.0, 0.0);
- glTexCoord2f(1.0, 0.0); glVertex3f(0.0, -1.0, 0.0);
- glEnd();
- glBindTexture(GL_TEXTURE_2D, texName[1]);
- glBegin(GL_QUADS);
- glTexCoord2f(0.0, 0.0); glVertex3f(1.0, -1.0, 0.0);
- glTexCoord2f(0.0, 1.0); glVertex3f(1.0, 1.0, 0.0);
- glTexCoord2f(1.0, 1.0); glVertex3f(2.41421, 1.0, -1.41421);
- glTexCoord2f(1.0, 0.0); glVertex3f(2.41421, -1.0, -1.41421);
- glEnd();
- glFlush();
-}
-
-static void reshape(int w, int h)
-{
- glViewport(0, 0, (GLsizei) w, (GLsizei) h);
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- gluPerspective(60.0, (GLfloat) w/(GLfloat) h, 1.0, 30.0);
- glMatrixMode(GL_MODELVIEW);
- glLoadIdentity();
- glTranslatef(0.0, 0.0, -3.6);
-}
-
-/* ARGSUSED1 */
-static void keyboard(unsigned char key, int x, int y)
-{
- switch (key) {
- case 27:
- exit(0);
- break;
- }
-}
-
-int main(int argc, char** argv)
-{
- glutInit(&argc, argv);
- glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB | GLUT_DEPTH);
- glutInitWindowSize(250, 250);
- glutInitWindowPosition(100, 100);
- glutCreateWindow(argv[0]);
- init();
- glutReshapeFunc(reshape);
- glutDisplayFunc(display);
- glutKeyboardFunc (keyboard);
- glutMainLoop();
- return 0;
-}
-#else
-int main(int argc, char** argv)
-{
- fprintf (stderr, "This program demonstrates a feature which is not in OpenGL Version 1.0.\n");
- fprintf (stderr, "If your implementation of OpenGL Version 1.0 has the right extensions,\n");
- fprintf (stderr, "you may be able to modify this program to make it run.\n");
- return 0;
-}
-#endif
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