Re: [PATCH v2 0/5] MR636: vkd3d-shader/fx: Add initial support for writing buffers descriptions.

[Henri Verbeet (＠hverbeet)]

> +    struct fx_4_numeric_type
> +    {
> +        uint32_t type_class   : 3;
> +        uint32_t base_type    : 5;
> +        uint32_t rows         : 3;
> +        uint32_t columns      : 3;
> +        uint32_t column_major : 1;
> +        uint32_t unknown      : 17;
> +    };
>  [...]
> +    union
> +    {
> +        struct fx_4_numeric_type type;
> +        uint32_t data;
> +    } numeric_desc;
>  [...]
> +        put_u32_unaligned(buffer, numeric_desc.data);

I don't think bit-field memory layout is particularly portable.