When or can geometry shaders be implemented into MoltenVK?

[loyahdev]

Like for macOS there’s metal 3 with mesh shaders but when will it be implemented for moltenvk?

[billhollings]

There is some PoC effort currently underway using Mesh shaders to provide Geometry shaders.

We're expecting initial availability to be sometime in Q1/23.

[siegmund-heiss-ich]

Is there an ETA for Q1/23 to be finished? 😅

[billhollings]

@blasphemousjohn @siegmund-heiss-ich

Geometry Shaders are under development in PR #1815, but resourcing is limited, so it's proceeding slowly.

[sofakng]

Glad to see this is still being worked on and I wanted to say thanks for all of your hard work! (@billhollings)

Is this issue the best place to follow any updates?

[loyahdev]

We got any updates @billhollings or just places we should go to and find more info?

[billhollings]

The current plan for geometry shaders is to use Apple's new Shader Converter tech. As for more info, we've got this identified in th MoltenVK roadmap.

[gdkchan]

Will the geometry shader implementation support subgroup operations? I'm currently working on a emulator where some games require this feature.