ACO developers will work on OpenGL at some point too. OpenGL in general isn't the case I worry about, as long as it performs sufficiently well. All modern things should be using Vulkan anyway, especially if something requires focus on performance.
And deprecated features? I think there are better things to focus on first optimization wise.
Well, the original comparison was with Nvidia's driver and Nvidia has a much more optimized driver.
Also it is much more practical (and realistic) to have a few devs optimize a handful of API implementations than expect the thousands of devs who work on thousands of applications to do that (also why OpenGL etc isn't going anywhere).
> Well, the original comparison was with Nvidia's driver and Nvidia has a much more optimized driver.
I wouldn't say that. In all common cases they don't. And as above, deprecated features is the last thing I'd start comparing that on. If you use something deprecated, worrying about performance shouldn't be the case, rather you should worry about rewriting your code.
And deprecated features? I think there are better things to focus on first optimization wise.