Besides that, remember that if you use Vulkan, you will almost certainly end-up with something that is very optimized for one platform, but won't immediately run well on alternative platforms (see games with their frequent updates for new CPU and GPU architectures).
Apple runs Metal on AMD GPUs, Intel iGPUs, and their own in-house Apple GPUs. If you used Metal, you didn't really have to do much optimization to get close-to-the-best-possible performance on all three of these very-different architectures.
Apple runs Metal on AMD GPUs, Intel iGPUs, and their own in-house Apple GPUs. If you used Metal, you didn't really have to do much optimization to get close-to-the-best-possible performance on all three of these very-different architectures.