ps_1_1
  def c4, 0, 0, 1, 1
  def c2, 0.5, 0.5, 0, 0
  def c1, 1, 1, 0, 0
  def c3, 0, 0, 1, 0
  tex t0
  tex t1
  tex t2
  tex t3
  sub_x4 r0.w, t0, t1
  mul t0.xyz, r0.w, c5
+ sub_x4 r1.w, t3, t2
  mad r0, r1.w, c6, t0
  add_x2 r0, r0, r0
  add r0, r0, c2
  add r0, r0, c3
