Attachment 9472 Details for Bug 10521 – test case

test case

image.c (text/plain), 4.40 KB, created by WuNian on 2007-04-03 23:35:09 UTC

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Creator: WuNian

Created: 2007-04-03 23:35:09 UTC

Size: 4.40 KB

patch

obsolete

>/*
> * 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  Unpublished - rights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.
> */
>
>/*  image.c
> *  This program demonstrates drawing pixels and shows the effect
> *  of glDrawPixels(), glCopyPixels(), and glPixelZoom().
> *  Interaction: moving the mouse while pressing the mouse button
> *  will copy the image in the lower-left corner of the window
> *  to the mouse position, using the current pixel zoom factors.
> *  There is no attempt to prevent you from drawing over the original
> *  image.  If you press the 'r' key, the original image and zoom
> *  factors are reset.  If you press the 'z' or 'Z' keys, you change
> *  the zoom factors.
> */
>#include <GL/glut.h>
>#include <stdlib.h>
>#include <stdio.h>
>
>/*	Create checkerboard image	*/
>#define	checkImageWidth 64
>#define	checkImageHeight 64
>GLubyte checkImage[checkImageHeight][checkImageWidth][3];
>
>static GLdouble zoomFactor = 1.0;
>static GLint height;
>
>void makeCheckImage(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;
>      }
>   }
>}
>
>void motion(int x, int y)
>{
>   glRasterPos2i (x, y);
>   glPixelZoom (1, -1);
>   glCopyPixels (0, 0, checkImageWidth, checkImageHeight, GL_COLOR);
>   glPixelZoom (1.0, 1.0);
>   glFlush ();
>}
>
>void init(void)
>{    
>   glClearColor (0.0, 0.0, 0.0, 0.0);
>   glShadeModel(GL_FLAT);
>   makeCheckImage();
>   glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
>}
>
>void display(void)
>{
>   glClear(GL_COLOR_BUFFER_BIT);
>   glRasterPos2i(0, 0);
>   glDrawPixels(checkImageWidth, checkImageHeight, GL_RGB, 
>                GL_UNSIGNED_BYTE, checkImage);
>   glFlush();
>   motion (10, 80);
>}
>
>void reshape(int w, int h)
>{
>   glViewport(0, 0, (GLsizei) w, (GLsizei) h);
>   height = (GLint) h;
>   glMatrixMode(GL_PROJECTION);
>   glLoadIdentity();
>   gluOrtho2D(0.0, (GLdouble) w, 0.0, (GLdouble) h);
>   glMatrixMode(GL_MODELVIEW);
>   glLoadIdentity();
>}
>
>void keyboard(unsigned char key, int x, int y)
>{
>   switch (key) {
>      case 27:
>         exit(0);
>         break;
>      default:
>         break;
>   }
>}
>
>int main(int argc, char** argv)
>{
>   glutInit(&argc, argv);
>   glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);
>   glutInitWindowSize(250, 250);
>   glutInitWindowPosition(100, 100);
>   glutCreateWindow(argv[0]);
>   init();
>   glutDisplayFunc(display);
>   glutReshapeFunc(reshape);
>   glutKeyboardFunc(keyboard);
>   glutMotionFunc(motion);
>   glutMainLoop();
>   return 0; 
>}

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