Re: [PATCH v2 0/6] MR489: vkd3d-shader: Prepare for 64-bit integer support.

[Giovanni Mascellani (＠giomasce)]

Giovanni Mascellani (@giomasce) commented about tests/hlsl/arithmetic-float-uniform.shader_test:
> uniform 0 float4 1.0 0.0 0.0 0.0
>  draw quad
>  probe all rgba (1e99, 1e99, 1e99, 1e99)
> -
>
> +[require]
> +shader model >= 5.0
> -
>
> +[pixel shader todo]
> +uniform double2 a;
> -
>
> +float4 main() : SV_TARGET
> +{
> - double x = a.x;
> - double y = a.y;
> - return float4(x + y, x - y, x * y, x / y);

This is fine for me, but here and below `asuint()` with a `uint4` return type could be used to return an actual double. I don't know if SM6 has something similar for 64 bit integers, but it can be emulated pretty easily with bitshifts anyway.