Im getting really bad graphics in certain angles



i use the code

Code:
  glBegin(GL_TRIANGLE_STRIP); //
  glTexCoord2f(xfrac, yfrac);
  glVertex2f(x, y);

  glTexCoord2f(xfrac, hfrac);
  glVertex2f(x, y + titleh);

  glTexCoord2f(wfrac, yfrac);
  glVertex2f(x + titlew, y);

  glTexCoord2f(wfrac, hfrac);
  glVertex2f(x + titlew, y + titleh);
  glEnd;
Whats wrong?


EDIT : You have to apply the texture filters after loading them