Re: [PATCH 0/1] MR74: vkd3d-shader/hlsl: Support dot() for SM1.

[Zebediah Figura (＠zfigura)]

I don't think we want the same op to have different semantics depending on backend.

The policy isn't really set in stone yet, but for the moment I think adding backend-specific HLSL_OP_* is fine.