Simple pixel doubling (no filter) #up_h 0 0 128 0 0 0 0 128 0 0 0 0 128 0 0 0 0 128 0 0 0 0 128 0 0 0 0 128 0 0 0 0 128 0 0 0 0 128 0 0 #up_v3 0 0 128 0 0 0 0 128 0 0 0 0 128 0 0 0 0 128 0 0 0 0 128 0 0 0 0 128 0 0 0 0 128 0 0 0 0 128 0 0 #up_v5 0 0 128 0 0 0 0 128 0 0 0 0 128 0 0 0 0 128 0 0 0 0 128 0 0 0 0 128 0 0 0 0 128 0 0 0 0 128 0 0