Re: Xbox Series S/X UWP

On June 6, 2022 21:07:32 Marek Olšák <[email protected]> wrote:
>> I'd love to see Mesa used to bring Vulkan to consoles!
>
> Ever heard of Steam Deck? ;)

I have! I've even heard a rumour that a line it two of my code is running 
in it. :-P But why not take over ALL the consoles?

--Jason


> Marek
>
>
>
> On Mon, Jun 6, 2022 at 12:59 PM Jason Ekstrand <[email protected]> wrote:
>
> 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:
>
> 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
>
>
>
> 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
>
>
>
> 	
>
> You don't often get email from [email protected]. Learn why this is 
> important
>
> 	
>
> 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