20 instructions

store_src_rg                   coords = src.rg
init_lane_masks                CondMask = LoopMask = RetMask = true
copy_uniform                   $0 = unknownInput
swizzle_4                      $0..3 = ($0..3).xxxx
copy_4_slots_unmasked          h4 = $0..3
copy_uniform                   $0 = unknownInput
copy_slot_unmasked             $1 = $0
copy_constant                  h4(2) = 0
copy_constant                  h4(3) = 0x3F800000 (1.0)
copy_2_slots_unmasked          h4(0..1) = $0..1
copy_constant                  h4(0) = 0
copy_uniform                   h4(1) = unknownInput
copy_constant                  h4(2) = 0x3F800000 (1.0)
copy_constant                  h4(3) = 0
copy_constant                  h4(0) = 0
copy_uniform                   h4(1) = unknownInput
copy_constant                  h4(2) = 0
copy_uniform                   h4(3) = unknownInput
copy_4_slots_unmasked          $0..3 = h4
load_src                       src.rgba = $0..3