glMatrixMode(GL_PROJECTION);
  glLoadIdentity;
  glOrtho(0, 1, 0, 1, -1, 1);
  glMatrixMode(GL_MODELVIEW);
  glLoadIdentity;
  Tex.Bind();
  glBegin(GL_QUADS);
  glTexCoord2f(0, 0);  glVertex2f(0, 0);
  glTexCoord2f(1, 0);  glVertex2f(1, 0);
  glTexCoord2f(1, 1);  glVertex2f(1, 1);
  glTexCoord2f(0, 1);  glVertex2f(0, 1);
  glEnd;
  Tex.Unbind();