    1. store_src_rg                   coords = src.rg
    2. init_lane_masks                CondMask = LoopMask = RetMask = true
    3. zero_4_slots_unmasked          color = 0
    4. copy_constant                  $0 = colorWhite(0)
    5. copy_constant                  $1 = 0x3F800000 (1.0)
    6. cmpeq_float                    $0 = equal($0, $1)
    7. branch_if_no_active_lanes_eq   branch +3 (#10) if no lanes of $0 == 0xFFFFFFFF
    8. copy_constant                  $1 = 0x3F800000 (1.0)
    9. copy_slot_unmasked             color(1) = $1
   10. copy_constant                  $0 = colorWhite(0)
   11. copy_constant                  $1 = 0x40000000 (2.0)
   12. cmpeq_float                    $0 = equal($0, $1)
   13. branch_if_no_active_lanes_eq   branch +2 (#15) if no lanes of $0 == 0xFFFFFFFF
   14. jump                           jump +3 (#17)
   15. copy_constant                  $1 = 0x3F800000 (1.0)
   16. copy_slot_unmasked             color(3) = $1
   17. store_loop_mask                $0 = LoopMask
   18. jump                           jump +1 (#19)
   19. copy_constant                  $1 = colorWhite(0)
   20. copy_constant                  $2 = 0x40000000 (2.0)
   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 -5 (#19)
   25. load_loop_mask                 LoopMask = $0
   26. store_loop_mask                $0 = LoopMask
   27. zero_slot_unmasked             [temporary 0] = 0
   28. reenable_loop_mask             LoopMask |= [temporary 0]
   29. copy_constant                  $1 = colorWhite(0)
   30. copy_constant                  $2 = 0x40000000 (2.0)
   31. cmpeq_float                    $1 = equal($1, $2)
   32. merge_loop_mask                LoopMask &= $1
   33. stack_rewind
   34. branch_if_any_active_lanes     branch_if_any_active_lanes -7 (#27)
   35. load_loop_mask                 LoopMask = $0
   36. copy_4_slots_unmasked          $0..3 = color
   37. copy_4_slots_unmasked          [main].result = $0..3
   38. load_src                       src.rgba = [main].result