[PATCH 2/6] d3d9: Always allow read and write map access to non-DEFAULT buffers.

[Henri Verbeet]

On Mon, 13 May 2019 at 23:05, Matteo Bruni <mbruni at codeweavers.com> wrote:
> D3d9 is very lax WRT map access to buffers and there isn't really much
> of a reason for us to restrict read access to non-DEFAULT resources.
>
> On the other hand, we'd still really like to be able to ensure that
> DEFAULT, DYNAMIC | WRITEONLY buffers get allocated in the proper
> memory region and get efficient data uploads, so keep the restriction
> for DEFAULT resources.
>
So another, perhaps clearer, way to frame this is that we ignore
D3DUSAGE_WRITEONLY for pools other than D3DPOOL_DEFAULT.