Attachment 141 Details for Bug 377 – Test program show that 'native' OpenGL also have overflow 'bugs'

Test program show that 'native' OpenGL also have overflow 'bugs'

test.cpp (text/plain), 4.52 KB, created by Sven Gothel on 2009-09-01 05:16:00 CEST

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Creator: Sven Gothel

Created: 2009-09-01 05:16:00 CEST

Size: 4.52 KB

patch

obsolete

>/********************************************************/
>/*                     cube.c                           */
>/********************************************************/
>/* Affiche a l'ecran un cube en 3D                      */
>/********************************************************/
>
>/* inclusion des fichiers d'en-tete Glut */
>
>#include <GL/glut.h>
>#include <iostream>
>
>/* Notre structure point */
>
>typedef struct
>{
>  float x;
>  float y;
>  float z;
>  float r;
>  float g;
>  float b;
>} point;
>
>point p[8]={
>    {-0.5,-0.5, 0.5,1.0,0.0,0.0},
>    {-0.5, 0.5, 0.5,0.0,1.0,0.0},
>    { 0.5, 0.5, 0.5,0.0,0.0,1.0},
>    { 0.5,-0.5, 0.5,1.0,1.0,1.0},
>    {-0.5,-0.5,-0.5,1.0,0.0,0.0},
>    {-0.5, 0.5,-0.5,0.0,1.0,0.0},
>    { 0.5, 0.5,-0.5,0.0,0.0,1.0},
>    { 0.5,-0.5,-0.5,1.0,1.0,1.0}};
>  
>int f[6][4]={
>  {0,1,2,3},
>  {3,2,6,7},
>  {4,5,6,7},
>  {0,1,5,4},
>  {1,5,6,2},
>  {0,4,7,3}};
>
>char presse;
>int anglex,angley,x,y,xold,yold;
>
>/* Prototype des fonctions */
>void affichage();
>void clavier(unsigned char touche,int x,int y);
>void reshape(int x,int y);
>void idle();
>void mouse(int bouton,int etat,int x,int y);
>void mousemotion(int x,int y);
>
>int main(int argc,char **argv)
>{
>  /* initialisation de glut et creation
>     de la fenetre */
>  glutInit(&argc,argv);
>  glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);
>  glutInitWindowPosition(200,200);
>  glutInitWindowSize(250,250);
>  glutCreateWindow("cube");
>
>  /* Initialisation d'OpenGL */
>  glClearColor(0.0,0.0,0.0,0.0);
>  glColor3f(1.0,1.0,1.0);
>  glPointSize(2.0);
>  glEnable(GL_DEPTH_TEST);
>
>  /* enregistrement des fonctions de rappel */
>  glutDisplayFunc(affichage);
>  glutKeyboardFunc(clavier);
>  glutReshapeFunc(reshape);
>  glutMouseFunc(mouse);
>  glutMotionFunc(mousemotion);
>
>  /* Entree dans la boucle principale glut */
>  glutMainLoop();
>  return 0;
>}
>
>void showMatrix()
>{
>  double matrix[16];
>  glGetDoublev(GL_MODELVIEW_MATRIX, matrix);
>  std::cout << "_________________________________" << std::endl;
>  for(int i = 0 ; i < 4 ; i++)
>  {
>    std::cout << "|";
>    for(int j = 0 ; j < 4 ; j++)
>       std::cout << matrix[j+4*i] << "\t|";
>    std::cout << std::endl;
>    std::cout << "---------------------------------" << std::endl;
>  }
>}
>
>void affichage()
>{
>  int i,j;
>  /* effacement de l'image avec la couleur de fond */
>  glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
>  
>  glMatrixMode(GL_MODELVIEW);
>  glLoadIdentity();
>  showMatrix();
>
>  glRotated(-angley,1.0,0.0,0.0);
>  glRotated(-anglex,0.0,1.0,0.0);
>  glScaled(0.25, 4E38, 0.5);
>
>
>
>  showMatrix();
>  /* Dessin du cube */
>  for (i=0;i<6;i++)
>    {
>      glBegin(GL_POLYGON);
>      for (j=0;j<4;j++)
>	{
>	  glColor3f(p[f[i][j]].r,p[f[i][j]].g,p[f[i][j]].b);
>	  glVertex3f(p[f[i][j]].x,p[f[i][j]].y,p[f[i][j]].z);
>	}
>      glEnd();
>    }
>  glFlush();
>  
>  /* On echange les buffers */
>  glutSwapBuffers();
>}
>
>void clavier(unsigned char touche,int x,int y)
>{
>  switch (touche)
>    {
>    case 'p': /* affichage du carre plein */
>      glPolygonMode(GL_FRONT_AND_BACK,GL_FILL);
>      glutPostRedisplay();
>      break;
>    case 'f': /* affichage en mode fil de fer */
>      glPolygonMode(GL_FRONT_AND_BACK,GL_LINE);
>      glutPostRedisplay();
>      break;
>    case 's' : /* Affichage en mode sommets seuls */
>      glPolygonMode(GL_FRONT_AND_BACK,GL_POINT);
>      glutPostRedisplay();
>      break;
>    case 'd':
>      glEnable(GL_DEPTH_TEST);
>      glutPostRedisplay();
>      break;
>    case 'D':
>      glDisable(GL_DEPTH_TEST);
>      glutPostRedisplay();
>      break;
>    //case 'q' : /*la touche 'q' permet de quitter le programme */
>      //exit(0);
>    }
>}
>
>void reshape(int x,int y)
>{
>  if (x<y)
>    glViewport(0,(y-x)/2,x,x);
>  else 
>    glViewport((x-y)/2,0,y,y);
>}
>
>void mouse(int button, int state,int x,int y)
>{
>  /* si on appuie sur le bouton gauche */
>  if (button == GLUT_LEFT_BUTTON && state == GLUT_DOWN) 
>  {
>    presse = 1; /* le booleen presse passe a 1 (vrai) */
>    xold = x; /* on sauvegarde la position de la souris */
>    yold=y;
>  }
>  /* si on relache le bouton gauche */
>  if (button == GLUT_LEFT_BUTTON && state == GLUT_UP) 
>    presse=0; /* le booleen presse passe a 0 (faux) */
>}
>
>void mousemotion(int x,int y)
>  {
>    if (presse) /* si le bouton gauche est presse */
>    {
>      /* on modifie les angles de rotation de l'objet
>	 en fonction de la position actuelle de la souris et de la derniere
>	 position sauvegardee */
>      anglex=anglex+(x-xold); 
>      angley=angley+(y-yold);
>      glutPostRedisplay(); /* on demande un rafraichissement de l'affichage */
>    }
>    
>    xold=x; /* sauvegarde des valeurs courante de le position de la souris */
>    yold=y;
>  }

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Attachments on bug 377: 141