Re: [PATCH 0/1] MR368: vkd3d-shader: Add constant folding for 'rsq'.

[Nikolay Sivov (＠nsivov)]

On Wed Sep 27 10:45:45 2023 +0000, Giovanni Mascellani wrote:
> Why there is no warning for zero in this case? BTW, did you manage to
> actually have native execute `rsqrt()` on a `double`? If I try something
> trivial as
> float4 main(uint4 x : COLOR) : sv_target
> {
>     double y = 0.0;
>     return rsqrt(y);
> }
>
> the warnings seem to imply that `y` is casted to `float` before being
> given to `rsqrt()`.

Yes, it's better to remove anything but float/half. I don't see how to feed double to it. It's always converted.