DX Shader Assembly Registers

Question

I'm starting to learn dx assembly but I'm really confused there are some registers i can't seem to find what are they for anywhere these registers are:

mov_pp

mov_sat

and basically all of them that have something different from normal assembly registers... is there a tutorial anywhere for this?.

Basically what does "pp" and "sat" stand for?

Thanks

Answer 1

Those aren't registers. They are the mov instruction, which moves data between registers, with added instruction modifiers, described here.

The _pp modifier allows the instruction to run in partial precision.

The _sat modifier clamps the result to the range [0,1].