Re: [PATCH v4 0/8] MR66: vkd3d-shader/hlsl: Broaden resources support v2 (PART 1).

[Zebediah Figura (＠zfigura)]

On Tue Jan 31 20:21:04 2023 +0000, Francisco Casas wrote:
> Structs have to be split into separated components in sm5 but only
> **after** register allocation.
> This is because register allocation still considers variables as a
> whole, it is only for the RDEF that components have to be written separately.

What does it mean that "register allocation still considers variables as a whole"? Why can't we get the same effect from just allocating the separate variables (assuming we do it in a consistent order)?