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