Why does this happen?

      

  glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);  // Clear The Screen And The Depth Buffer

  glLoadIdentity();  // Reset The Current Modelview Matrix

  glTranslatef( xpos, ypos, zpos);  // Move 1.5 left and 8.0 out


  glBindTexture(GL_TEXTURE_2D, texture[0]);  // Select a texture to use


    for (GLfloat x=1.0f; x<=2.0f; x+=1.0f)
    {
      for (GLfloat y=1.0f; y<=2.0f; y+=1.0f)
      {
        for (GLfloat z=1.0f; z<=2.0f; z+=1.0f)
        {
          glTranslatef( (x+2.0f), (y+2.0f), (z+2.0f));  // Move the screen


          glRotatef( xrot, -1.0f, 0.0f, 0.0f);
          glRotatef( yrot, 0.0f, -1.0f, 0.0f);

          glBegin(GL_TRIANGLES);
            triangle.DrawTriangle();  // Draw a triangle

          glEnd();
        }
      }
    }

  xrot+=0.4f;
  yrot+=0.4f;