Maybe if someone comes along to write one or we get a multi-backend shader compiler so it doesn't explode the number of shaders we have to write and optimize.

Maybe if someone comes along to write one or we get a multi-backend shader compiler so it doesn't explode the number of shaders we have to write and optimize. But honestly, it doesn't matter. Apple just shipped a new OpenGL for M systems and every major browser is using GL more than ever. It's not going anywhere. And even if it did, we have a Vulkan backend that can target MoltenVK as well as Mesa's Zink already supporting at least OpenGL 4.6 which could also be run on MoltenVK with very little overhead.