1. store_src_rg                   coords = src.rg
    2. init_lane_masks                CondMask = LoopMask = RetMask = true
    3. zero_slot_unmasked             x = 0
    4. store_loop_mask                $0 = LoopMask
    5. jump                           jump +3 (label 0 at #8)
    6. label                          label 0x00000001
    7. mask_off_loop_mask             LoopMask &= ~(CondMask & LoopMask & RetMask)
    8. label                          label 0x00000000
    9. copy_slot_unmasked             $1 = x
   10. copy_constant                  $2 = 0x00000004 (5.605194e-45)
   11. cmplt_int                      $1 = lessThan($1, $2)
   12. merge_loop_mask                LoopMask &= $1
   13. stack_rewind
   14. branch_if_any_active_lanes     branch_if_any_active_lanes -8 (label 1 at #6)
   15. load_loop_mask                 LoopMask = $0
   16. copy_4_constants               $0..3 = colorGreen
   17. copy_4_slots_unmasked          [main].result = $0..3
   18. load_src                       src.rgba = [main].result