Definition (or not) of IDXGIResource methods

[Henri Verbeet]

On 30 June 2017 at 19:54, Ben "Root" Anderson <roothorick at gmail.com> wrote:
> I've been studying the DXGI code with an eye for implementing the
> DirectX-side shared resource functionality so that an application
> would hopefully be able to share Direct3D textures with a Vulkan
> instance, and what I'm seeing has me rather confused.
>
> IDXGIResource appears to be declared, with a number of methods, in
> include/dxgi.idl. I'm not clear on what exactly an IDL file is, but my
> impression is it's similar to a specfile, except for headers of C++
> interfaces. In any case, none of the methods declared appear to have
> any definition anywhere in Wine. The logical conclusion would be
> they're automatically generated stubs.
>
> But that doesn't make sense, because the DXGI test at
> dlls/dxgi/tests/device.c calls IDXGIResource_GetUsage and appears to
> expect it to succeed,
Actually, no, it doesn't. The IDXGISwapChain_GetBuffer() call in
test_swapchain_parameters() that's supposed to return the
IDXGIResource interface is marked todo_wine. I.e., it's expected to
fail currently. The IDXGIResource interface is indeed currently
unimplemented in Wine.