[PATCH 11/12] ddraw: cache active DCs

[Stefan Dösinger]

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Am 2015-09-23 um 10:27 schrieb Riccardo Bortolato:
> +        sub_resource = wined3d_texture_get_sub_resource(surface_impl->wined3d_texture, surface_impl->sub_resource_idx);
> +        wined3d_surface = wined3d_surface_from_resource(sub_resource);
> +        if (FAILED(hr = wined3d_surface_getdc(wined3d_surface, &surface_dc)))
I expect the getdc call to fail because the application already called GetDC. I think you can just add a HDC dc field to struct wined3d_surface and compare it to the dc passed to GetSurfaceFromDC.

> +    if (!hdc)
>      {
> -        TRACE("No surface found for dc %p.\n", hdc);
>          *Surface = NULL;
>          return DDERR_NOTFOUND;
>      }
Personally I prefer to write a WARN if we return failure to the application. Note that this is just my personal choice though, the existing code is not consistent here.

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