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Diffstat (limited to 'progs/redbook/checker.c')
| -rw-r--r-- | progs/redbook/checker.c | 140 |
1 files changed, 0 insertions, 140 deletions
diff --git a/progs/redbook/checker.c b/progs/redbook/checker.c deleted file mode 100644 index 60e6f7b60c8..00000000000 --- a/progs/redbook/checker.c +++ /dev/null @@ -1,140 +0,0 @@ - -/* Copyright (c) Mark J. Kilgard, 1994. */ - -/* - * (c) Copyright 1993, 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 - * Unpublished-- rights reserved under the copyright laws of the - * United States.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(TM) is a trademark of Silicon Graphics, Inc. - */ -/* checker.c - * This program texture maps a checkerboard image onto - * two rectangles. This program clamps the texture, if - * the texture coordinates fall outside 0.0 and 1.0. - */ -#include <stdlib.h> -#include <GL/glut.h> - -/* Create checkerboard texture */ -#define checkImageWidth 64 -#define checkImageHeight 64 -GLubyte checkImage[checkImageWidth][checkImageHeight][3]; - -static void makeCheckImage(void) -{ - int i, j, c; - - for (i = 0; i < checkImageWidth; i++) { - for (j = 0; j < checkImageHeight; 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; - } - } -} - -static void myinit(void) -{ - glClearColor (0.0, 0.0, 0.0, 0.0); - glEnable(GL_DEPTH_TEST); - glDepthFunc(GL_LESS); - - makeCheckImage(); - glPixelStorei(GL_UNPACK_ALIGNMENT, 1); - glTexImage2D(GL_TEXTURE_2D, 0, 3, checkImageWidth, - checkImageHeight, 0, GL_RGB, GL_UNSIGNED_BYTE, - &checkImage[0][0][0]); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); - glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL); - glEnable(GL_TEXTURE_2D); - glShadeModel(GL_FLAT); -} - -static void display(void) -{ - glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); - 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); - - 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(); - glutSwapBuffers(); -} - -static void myReshape(int w, int h) -{ - glViewport(0, 0, w, h); - glMatrixMode(GL_PROJECTION); - glLoadIdentity(); - gluPerspective(60.0, 1.0*(GLfloat)w/(GLfloat)h, 1.0, 30.0); - glMatrixMode(GL_MODELVIEW); - glLoadIdentity(); - glTranslatef(0.0, 0.0, -3.6); -} - -static void -key(unsigned char k, int x, int y) -{ - switch (k) { - case 27: /* Escape */ - exit(0); - break; - default: - return; - } - glutPostRedisplay(); -} - -int -main(int argc, char** argv) -{ - glutInit(&argc, argv); - glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH); - glutCreateWindow("checker"); - myinit(); - glutReshapeFunc (myReshape); - glutDisplayFunc(display); - glutKeyboardFunc(key); - glutMainLoop(); - return 0; /* ANSI C requires main to return int. */ -} |