#define GLUT_DISABLE_ATEXIT_HACK #include 
     
      #define    WIDTH 64#define    HEIGHT 64GLubyte Image[HEIGHT][WIDTH][4];GLfloat xRot;void makeImage(void){    int i, j, c;         for (i = 0; i < HEIGHT; i++) {       for (j = 0; j < WIDTH; j++) {          c = ((((i&0x8)==0)^((j&0x8))==0))*255;          Image[i][j][0] = (GLubyte) c;          Image[i][j][1] = (GLubyte) c;          Image[i][j][2] = (GLubyte) c;          Image[i][j][3] = (GLubyte) 255;       }    }} void init(void){    glClearColor (0.0, 0.0, 0.0, 0.0);     makeImage();    glPixelStorei(GL_UNPACK_ALIGNMENT, 1);     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);    //设置纹理参数    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);    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, WIDTH, HEIGHT,                  0, GL_RGBA, GL_UNSIGNED_BYTE, Image);    glTexEnvf(GL_TEXTURE_ENV,GL_TEXTURE_ENV_MODE,GL_DECAL);    //设置纹理环境    glEnable(GL_TEXTURE_2D);                                //启用二维纹理 }  void display(void) {    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);    glEnable(GL_TEXTURE_2D);    glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);     glPushMatrix();    glColor4f(0,1,0,1);    glTranslatef(0.0, 0.0,-6.0);    glRotatef(xRot,1,0,0);    glBegin(GL_QUADS);                                        //指定纹理坐标    glTexCoord2f(0.0, 0.0); glVertex3f(-2.0, -2.0, 0.0);    glTexCoord2f(0.0, 1.0); glVertex3f(-2.0, 2.0, 0.0);    glTexCoord2f(1.0, 1.0); glVertex3f(2.0, 2.0, 0.0);    glTexCoord2f(1.0, 0.0); glVertex3f(2.0, -2.0, 0.0);    glEnd();    glPopMatrix();     glFlush(); }  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(); } void OnTimer(int value) {     xRot++;            //旋转角度增量     glutPostRedisplay();     glutTimerFunc(10,OnTimer,1); } void 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();    glutDisplayFunc(display);    glutReshapeFunc(reshape);    glutTimerFunc(10,OnTimer,1);    glutMainLoop(); }