> This definitely would be worth some profiling. I don't think it's a given that their custom stacks are going to beat wgpu in a meaningful way.
replyThey probably will for memory usage. Current wgpu seems to have a floor around ~100mb that isn't there with other rendering backends (and it was more like ~60mb with wgpu a few months / versions ago).
Not sure if this is fixable in wgpu, or do with spec compatibility (my guess would be that it's fixable, just not top priority for the team atm).
WebGPU has some surprising performance problems (although I only checked Google's Dawn library, not Rust's wgpu), and the amount of code that's pulled into the project is massive. A well-made Metal renderer which only implements the needed features will easily be 100x smaller (in terms of linecount) and most likely faster.
replyThere is also the issue that it is designed with JavaScript and browser sandbox in mind, thus the wrong abstraction level for native graphics middleware.
replyI am still curious how much uptake WebGPU will end up having on Android, or if Java/Kotlin folks will keep targeting OpenGL ES.
WGPU is just a layer over the top of the native APIs on any given platform so unless Zed's DirectX/Metal renderers were particularly bad it's unlikely WGPU will be better here.
replyI'm not saying it would be better, I'm saying it may not be particularly much worse. Which still might make it worth simplifying everything by settling on one rendering abstraction
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replyPlease elaborate, I am curious to why would you think WebGPU would meaningfully beat their Metal/DirectX renderers.
replyI don't think it would, but I don't think it's a given that their homegrown renderer is wildly more performant either - people tend to overestimate the performance of naive renderers
replywgpu isn't a renderer though, it's an abstraction layer. It's honestly hard for me to imagine it ever being faster than writing directx or metal directly. It has many advantages, like that it runs in browsers and is memory safe (and in the case of dawn, has great error messages). But it's hard for it to ever be as fast as the native APIs it calls for you.
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