[PATCH 7/8] d3drm: Implement IDirect3DRMDevice::CreateDeviceFromSurface.

[Stefan Dösinger]

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Am 2015-08-06 um 00:49 schrieb Aaryaman Vasishta:
>      device->d3drm = d3drm;
> +    device->render_target = surface;
>      IDirect3DRM_AddRef(d3drm);
>      device->render_target = surface;
This is redundant.

> +        hr = IDirectDrawSurface_AddAttachedSurface(surface, ds);
> +        IDirectDrawSurface_Release(ds);
> +        if (FAILED(hr))
> +            return hr;
> +    }
You've overshot my suggestion for pre-attached depth stencils a bit.
Now you no longer detach application-created depth stencils any more
in case CreateDevice() fails, but you also don't detach a depth
stencil that you attached.

This may even be the correct behavior. If you want you can write a
test (e.g. try to pass a color surface without DDSCAPS_3DDEVICE, but
*with* a depth stencil attached. See if it is detached. Try to pass a
color surface without DDSCAPS_3DDEVICE and see if a depth stencil is
attached after the failing CreateDevice call), but I don't think it's
worth spending much time on this.

My suggestion is to detach if creating the IM device fails, but only
if create_z_surface is TRUE.
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