1. store_src_rg                   coords = src.rg
    2. init_lane_masks                CondMask = LoopMask = RetMask = true
    3. copy_constant                  $0 = 0x3F800000 (1.0)
    4. swizzle_4                      $0..3 = ($0..3).xxxx
    5. copy_4_slots_unmasked          x = $0..3
    6. store_loop_mask                $0 = LoopMask
    7. jump                           jump +13 (label 0 at #20)
    8. label                          label 0x00000001
    9. copy_slot_unmasked             $1 = x(0)
   10. copy_constant                  $2 = 0x3E800000 (0.25)
   11. sub_float                      $1 -= $2
   12. copy_slot_masked               x(0) = Mask($1)
   13. store_condition_mask           $1 = CondMask
   14. copy_slot_unmasked             $2 = x(0)
   15. zero_slot_unmasked             $3 = 0
   16. cmple_float                    $2 = lessThanEqual($2, $3)
   17. merge_condition_mask           CondMask = $1 & $2
   18. mask_off_loop_mask             LoopMask &= ~(CondMask & LoopMask & RetMask)
   19. load_condition_mask            CondMask = $1
   20. label                          label 0x00000000
   21. copy_slot_unmasked             $1 = x(3)
   22. copy_constant                  $2 = 0x3F800000 (1.0)
   23. cmpeq_float                    $1 = equal($1, $2)
   24. merge_loop_mask                LoopMask &= $1
   25. stack_rewind
   26. branch_if_any_active_lanes     branch_if_any_active_lanes -18 (label 1 at #8)
   27. load_loop_mask                 LoopMask = $0
   28. store_loop_mask                $0 = LoopMask
   29. jump                           jump +19 (label 2 at #48)
   30. label                          label 0x00000003
   31. zero_slot_unmasked             [temporary 0] = 0
   32. copy_slot_unmasked             $1 = x(2)
   33. copy_constant                  $2 = 0x3E800000 (0.25)
   34. sub_float                      $1 -= $2
   35. copy_slot_masked               x(2) = Mask($1)
   36. store_condition_mask           $1 = CondMask
   37. copy_slot_unmasked             $2 = x(3)
   38. copy_constant                  $3 = 0x3F800000 (1.0)
   39. cmpeq_float                    $2 = equal($2, $3)
   40. merge_condition_mask           CondMask = $1 & $2
   41. copy_constant                  $3 = 0xFFFFFFFF
   42. copy_slot_masked               [temporary 0] = Mask($3)
   43. mask_off_loop_mask             LoopMask &= ~(CondMask & LoopMask & RetMask)
   44. load_condition_mask            CondMask = $1
   45. zero_slot_unmasked             $1 = 0
   46. copy_slot_masked               x(1) = Mask($1)
   47. reenable_loop_mask             LoopMask |= [temporary 0]
   48. label                          label 0x00000002
   49. zero_slot_unmasked             $1 = 0
   50. copy_slot_unmasked             $2 = x(2)
   51. cmplt_float                    $1 = lessThan($1, $2)
   52. merge_loop_mask                LoopMask &= $1
   53. stack_rewind
   54. branch_if_any_active_lanes     branch_if_any_active_lanes -24 (label 3 at #30)
   55. load_loop_mask                 LoopMask = $0
   56. copy_4_slots_unmasked          [main].result = x
   57. load_src                       src.rgba = [main].result