Sure, there are already open source projects that do Vulkan -> Metal like MoltenVK. But any time you are emulating one complex low level API with another, ther

Sure, there are already open source projects that do Vulkan -> Metal like MoltenVK. But any time you are emulating one complex low level API with another, there are likely performance penalties. Not to mention you are raising the complexity of the software stack and adding more surface area for bugs. It would be better if there was an open source low level graphics API that every OS could support in addition to their own proprietary APIs focused on ease of use.