Re: [PATCH v2 0/1] MR97: vkd3d-shader/hlsl: Support all() intrinsic.

[Francisco Casas (＠fcasas)]

At first, I was suspicious of implementing `all()` using multiplication, but that seems to be what the native compiler does...

```
float4 main() : sv_target
{
    float4 a = {1, 1, 1, 0};
    float4 b = {1e20, 1e20, 1e20, 0};

return float4(all(a), all(b), -1, -1);
}
```

this actually returns `(0, 1, -1, -1)` both in native and using this patch, so it is correct in giving the incorrect result.