> Apple will do their own thing, and they might not allow WebGPU on Safari.

Safari has WebGPU support today, albeit behind a feature flag until it's fully baked. https://imgur.com/a/b3spVWd

Not sure if this is good, but animometer shows an Avg Frame time of ~25.5 ms on a Mac Studio M1 Max with Safari 18.2 (20620.1.16.11.6). https://webgpu.github.io/webgpu-samples/sample/animometer/

The demo is doing a setBindGroup per triangle, so not exactly surprising since this is a well known bottleneck (Chrome's implementation is better optimized but even there setBindGroup is a surprisingly slow call). But since both implementations run on top of Metal there's no reason why Safari couldn't get at least to the same performance as Chrome.