[erikpukinskis]

Obviously there has to be a ground up rethink with security in mind. The standard won't be the same API, just like WebGL isn't the same as OpenGL. It's just, where it's possible to, you use the same API. The point is why not start with a starting point you can use on potentially every platform?

There's no way Apple would ever allow Metal proper to be ported to PlayStation or Windows, so you're limiting yourself to at best two platform coverage targeting this new standard. Vulcan will, hopefully, work on every platform. At least subsets of it, with shims. No way Metal ever gets there.