[Agent J]

Does MoltenVK convert Vulkan code to Metal code or does it just make that process easier?

By the way, I’m not a Vulkan developer, I’m just a curious Mac user.

[Bill Hollings]

I’m not clear what you mean by “convert Vulkan code to Metal code”, but I’ll take a stab at answering.

MoltenVK is a Vulkan implementation, and you use the standard Vulkan API in your application or game. You do not need to use any Metal functionality. For example, you can take an application or game written for Vulkan on another platform and run it unchanged on iOS and OS X using MoltenVK as the Vulkan implementation. MoltenVK uses Metal under the covers.

This portability includes the shaders. Vulkan uses SPIR-V shaders, and MoltenVK accepts them, and converts them automatically to the Metal Shading Language for use on iOS and OS X. You do not need to convert your shaders from one platform to the other.

I hope this answers your question. If not, please clarify the specifics you are looking for.

…Bill

[Agent J]

That’s awesome!

That answers my question perfectly.

Thanks!

[edsel.malasig]

Vulkan uses SPIR-V shaders, and MoltenVK accepts them, and converts them automatically to the Metal Shading Language for use on iOS and OS X. You do not need to convert your shaders from one platform to the other

i am a bit confused at this.

[Bill Hollings]

@edsel.malasig

What part confuses you? Do you have a particular question that we could answer to help clarify things?

The README_MoltenVK_UserGuide.md document in the Molten download package discusses the automatic conversion of SPIR-V shaders to MSL shaders in significant detail.

…Bill

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