| 1. store_src_rg coords = src.rg | |
| 2. init_lane_masks CondMask = LoopMask = RetMask = true | |
| 3. copy_4_constants $0..3 = colorGreen | |
| 4. copy_4_slots_masked [main].result = Mask($0..3) | |
| 5. mask_off_return_mask RetMask &= ~(CondMask & LoopMask & RetMask) | |
| 6. load_src src.rgba = [main].result |