16 instructions, 3 invocations

store_src_rg                   xy = src.rg
init_lane_masks                CondMask = LoopMask = RetMask = true
copy_2_slots_unmasked          $0..1 = xy
exchange_src                   swap(src.rgba, $0..3)
invoke_shader                  invoke_shader 0
exchange_src                   swap(src.rgba, $0..3)
copy_4_slots_unmasked          color = $0..3
copy_3_slots_unmasked          $0..2 = color(0..2)
invoke_to_linear_srgb          $0..3 = toLinearSrgb($0..3)
copy_3_slots_unmasked          color(0..2) = $0..2
copy_4_slots_unmasked          $0..3 = color
copy_slot_unmasked             $1 = $2
mul_imm_float                  $0 *= 0x3F400000 (0.75)
mul_imm_float                  $1 *= 0x3F400000 (0.75)
swizzle_copy_2_slots_masked    (color(0..2)).zx = Mask($0..1)
copy_3_slots_unmasked          $0..2 = color(0..2)
invoke_from_linear_srgb        $0..3 = fromLinearSrgb($0..3)
copy_slot_unmasked             $3 = color(3)
load_src                       src.rgba = $0..3