GL_TEXTURE_2D и всё ужасно рендерится

#include <GL/glut.h>

void Reshape(int width, int height)
{
  glViewport(0, 0, width, height);
  glMatrixMode(GL_PROJECTION);
  glLoadIdentity();
  gluOrtho2D(-1, 1, -1, 1);
  glMatrixMode(GL_MODELVIEW);
}

void Draw(void)
{
  glClear(GL_COLOR_BUFFER_BIT);

  glColor3f(0.0f, 0.0f, 1.0f);
  glLineWidth(1);

  glBegin(GL_LINES);
    glVertex2f(0, 0.5f);  
    glVertex2f(0, -0.5f);  
  glEnd();

  glFlush();  
}

int main(int argc, char *argv[])
{
  glutInit(&argc, argv);
  glutInitWindowSize(400, 300);
  glutInitWindowPosition(100, 100);

  glutInitDisplayMode(GLUT_RGB);
  glutCreateWindow("Demo Screen");

  glutReshapeFunc(Reshape);
  glutDisplayFunc(Draw);
  glClearColor(0, 0, 0, 0);

  glutMainLoop();
  return 0;
}

#include <GL/gl.h>
#include <GL/glu.h>
#include <glut.h>
#include <stdlib.h>
#include <stdio.h>

#define checkImageW 16
#define checkImageH 16
static GLubyte ShowImage1[checkImageH][checkImageW][4];

static GLuint ObjectName;

void makeCheckImage(void)
{
   int i, j, c;
   
    for (i = 0; i < checkImageH; i++) {
      for (j = 0; j < checkImageW; j++) {
         c = ((((i&0x8)==0)^((j&0x8))==0))*255;
         ShowImage1[i][j][0] = (GLubyte) c;
         ShowImage1[i][j][1] = (GLubyte) c;
         ShowImage1[i][j][2] = (GLubyte) c;
         ShowImage1[i][j][3] = (GLubyte) 255;
      }
   }
}

void init(void)
{    
   glClearColor (1.0,0.0,0.0,0.0);
   glShadeModel(GL_FLAT);
   glEnable(GL_DEPTH_TEST);

   makeCheckImage();
   glPixelStorei(GL_UNPACK_ALIGNMENT, 1);

   glGenTextures(1, &ObjectName);
   glBindTexture(GL_TEXTURE_2D, ObjectName);

   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
   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, checkImageW,
                checkImageH, 0, GL_RGBA, GL_UNSIGNED_BYTE,
                ShowImage1);
}

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);
   glBindTexture(GL_TEXTURE_2D, ObjectName);
   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();
   glFlush();
   glDisable(GL_TEXTURE_2D);
}

void reshape(int w, int h)
{
   glViewport(52, 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);
}

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 | GLUT_DEPTH);
   glutInitWindowSize(250, 250);
   glutInitWindowPosition(100, 100);
     glutCreateWindow("Demo Screen");
   init();
   glutDisplayFunc(display);
   glutReshapeFunc(reshape);
   glutKeyboardFunc(keyboard);
   glutMainLoop();
   return 0;
}