    1. store_src_rg                   coords = src.rg
    2. init_lane_masks                CondMask = LoopMask = RetMask = true
    3. copy_constant                  test1[0] = 0x3F800000 (1.0)
    4. copy_constant                  test1[1] = 0x40000000 (2.0)
    5. copy_constant                  test1[2] = 0x40400000 (3.0)
    6. copy_constant                  test1[3] = 0x40800000 (4.0)
    7. copy_constant                  test2[0](0) = 0x3F800000 (1.0)
    8. copy_constant                  test2[0](1) = 0x40000000 (2.0)
    9. copy_constant                  test2[1](0) = 0x40400000 (3.0)
   10. copy_constant                  test2[1](1) = 0x40800000 (4.0)
   11. zero_slot_unmasked             $0 = 0
   12. copy_constant                  $1 = 0x41800000 (16.0)
   13. shuffle                        $0..15 = ($0..15)[1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1]
   14. copy_4_slots_unmasked          test3[0](0..3) = $0..3
   15. copy_4_slots_unmasked          test3[0](4..7) = $4..7
   16. copy_4_slots_unmasked          test3[0](8..11) = $8..11
   17. copy_4_slots_unmasked          test3[0](12..15) = $12..15
   18. copy_slot_unmasked             $0 = test1[3]
   19. copy_2_slots_unmasked          $1..2 = test2[1]
   20. swizzle_1                      $1 = ($1..2).y
   21. add_float                      $0 += $1
   22. copy_4_slots_unmasked          $1..4 = test3[0](12..15)
   23. swizzle_1                      $1 = ($1..4).w
   24. add_float                      $0 += $1
   25. copy_constant                  $1 = 0x41C00000 (24.0)
   26. cmpeq_float                    $0 = equal($0, $1)
   27. swizzle_4                      $0..3 = ($0..3).xxxx
   28. copy_4_constants               $4..7 = colorRed
   29. copy_4_constants               $8..11 = colorGreen
   30. mix_4_ints                     $0..3 = mix($4..7, $8..11, $0..3)
   31. load_src                       src.rgba = $0..3