Re: [PATCH 0/4] MR458: vkd3d-shader/hlsl: Handle register(cX) reservations.

[Zebediah Figura (＠zfigura)]

Zebediah Figura (@zfigura) commented about tests/hlsl/register-reservations.shader_test:
> +[pixel shader fail(sm<6) todo]
> +// Overlapping register(cX) reservations should only be allowed on SM6.

Why, what happens on sm6?