I found a setup for 1-2 FPG that is similar to the one in 1-1. It might be useful for warpless runs. Just like in 1-1, you have to land on the 6th step, but on the second rather than the first pixel. Furthermore, the setup requires slightly different inputs. In 1-1, the inputs for the four frames while/after landing are right right + B right + B right + A + B For the 1-2 setup, you need to press right right right + B right + A + B So only one frame is different. The inputs for the clip are the same as in 1-1. Here is a video of me doing 1-2 FPG in an RTA:
This is like inputs for 0C8D50 on the practise ROM for 1-1 fpg, sometimes 1-1 fpg also happening with this inputs, but it is very rare. I think that 2 different tipes of fpg can't be really used in normal single-segment warpless runs, but it is great for Beat 1-4 or real time segmented runs.
The 1-2 FPG setup is very similar to D50 in 1-1, but not quite the same. For D50, you also land on the second pixel, but press B as soon as Mario touches the ground. In 1-2, you need to delay the B press for one more frame. It's quite unfortunate that the inputs for 1-2 FPG are only very slightly different from the ones in 1-1. I guess it would be easier if they were either exactly the same or completely different. There's always the danger that, once you learned 1-2 FPG, you mix up the setups and reduce your consistency on 1-1 FPG. But I doubt that there is a better setup for 1-2.
In warpless, you press left in 1-3 to get the mushroom. Therefore, your subpixel values won't be the same everytime you play this level. I would expect that there is no setup that works independently of the number of frames on which you press left.
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