[electricslpnsld]

Interesting, thanks for the clarification! Any idea as to the advantages of using these bindings vs. the Molten bindings, if one isn't using Rust?

[baobrien]

I think -- and I could be wrong here -- that gfx-rs aims to eventually implement Vulkan on D3D12 in addition to Metal, while MoltenVK only aims to work on Metal.

[wlesieutre]

I don't know about the MoltenVK branding specifically, but Khronos does plan a "Universally portable subset" of Vulkan with tools to target both Metal and D3D12 from one rendering codebase and common SPIR-V shaders.

The project is call Vulkan Portability Initiative:

https://www.khronos.org/blog/khronos-announces-the-vulkan-po...

[shmerl]

If I understood correctly, gfx-rs aims to provide an implementation for that initiative. Khronos only announced it in concept, they didn't implement it.

[kvark]

Both gfx-rs and MoltenVK are in that technical subgroup within Khronos.

[maccam94]

Are there any D3D12 platforms that don't also support Vulkan?

[jsheard]

Windows, partially. Vulkan can be used in classic win32 apps but not in "modern" UWP apps.

The Xbox One uses a variant of D3D12 and doesn't support Vulkan at all.

[drb91]

> Vulkan can be used in classic win32 apps but not in "modern" UWP apps.

Why is this/how do they enforce that?

The Xbox is hardly a surprise, but then again you're only going to target that for games so it's less of a problem.

[jsheard]

> Why is this/how do they enforce that?

Technically Windows doesn't support Vulkan at all, but the openness of the win32 platform allowed Khronos to define a "backdoor" interface where the application ignores the Windows graphics stack and instead gets a Vulkan context by talking to the graphics driver directly. The UWP sandbox makes this impossible so you're stuck with the native Direct3D APIs.

[shmerl]

I don't think UWP with Vulkan is completely impossible.

https://github.com/KhronosGroup/Vulkan-Docs/issues/366

It doesn't exist now though for sure, so for all practical purposes UWP locks developers out of using Vulkan.

[drb91]

Ahh, I had no idea UWP implied running on microsoft's terms. Is there a way to run them out of the sandbox manually?

[johncolanduoni]

Older Intel chips (pre-Skylake IIRC) don’t have Vulkan support on Windows, even though they do on Linux.

[wolfgke]

I am not completely sure, but I can imagine XBox One.

[kvark]

gfx-rs Metal backend can be powerful and faster