Re: Xbox Series S/X UWP

On Mon, Jun 6, 2022 at 11:38 AM Jesse Natalie <[email protected]>
wrote:

> (Hopefully this goes through and not to spam like last time I tried to
> respond…)
>
>
>
> No, neither of these would currently work with UWP.
>
>
>
> The primary reason is that neither Khronos API has extensions to
> initialize the winsys on top of the UWP core window infrastructure. In
> theory, you could initialize Dozen for offscreen rendering and then
> explicitly marshal the contents out – that would probably work actually.
> There’s 2 more gotchas there though:
>
>    1. The ICD loaders (OpenGL32.dll, Vulkan-1.dll) are not available in
>    the UWP environment. You could explicitly use the non-ICD version of GL
>    (i.e. Mesa’s OpenGL32.dll from the libgl-gdi target), include the
>    open-source Vulkan ICD loader, or use the ICD version of either
>    (OpenGLOn12.dll/libgallium_wgl.dll for GL – I plan to delete the former at
>    some point and just use the latter at some point; vulkan_dzn.dll for VK).
>
> If the objective here is to write a Vulkan app and ship it in UWP, I don't
see any reason why it couldn't be used for that eventually.  Without the
loader, you can still load the driver DLL directly.  You just have to use
vkGetInstance/DeviceProcAddr for everything because drivers don't expose
the Vulkan 1.0 API symbols (the loader does).  We'd also have to come up
with a story for window-system integration, as Jesse alluded.  I'd love to
see Mesa used to bring Vulkan to consoles!  Unfortunately, no one's working
on that currently or has any plans, as far as I know.

--Jason



>
>    1.
>    2. There’s not currently extensions for D3D12 interop either spec’d or
>    implemented.
>
>
>
> There’s one more problem for GL that I don’t think is problematic for VK,
> which is that it uses APIs that are banned from the UWP environment,
> specifically around inserting window hooks for Win32 framebuffer lifetime
> management. So you’d probably have to build a custom version that has all
> of that stuff stripped out to get it to be shippable in a UWP.
>
>
>
> We (Microsoft) don’t really have plans to add this kind of stuff, at least
> not in the near future, but I’d be open to accepting contributions that
> enable this.
>
>
>
> -Jesse
>
>
>
> *From:* mesa-dev <[email protected]> *On Behalf Of *Daniel
> Price
> *Sent:* Monday, June 6, 2022 5:41 AM
> *To:* [email protected]
> *Subject:* [EXTERNAL] Xbox Series S/X UWP
>
>
>
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>
> Hi, I was wandering if these two layers would work with UWP on Xbox Series
> Console or if not will there be plans to add support?
>
>
>
> https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14766
>
>
>
> https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14881
>
>
>
> Many Thanks
>
> Dan
>