add trait extension in addition to raw implementations on scopes

[EriKWDev]

I had a use-case where I wanted to be generic over the different scopes for helper functions and solved it by introducing extension traits in addition to the direct macro implementations you already have.

In general I agree with the docs as you say that it is much nicer to not have to import an extension, but this might be the best of both worlds.

Do what you want with it!
Thanks!

[EriKWDev]

Also, one thing to maybe investigate, there is the wgpu-builtin trait wgpu::util::RenderEncoder.

I guess my ultimate goal is to write a generic function over something like T: wgpu::util::RenderEncoder + wgpu_profiler::MaybeScopeSupport where MaybeScopeSupport could be implemented as nothing for normal wgpu::RenderPass and wgpu::RenderBundleEncoder but have support for scopes on all the different variations of scopes like Scope<'a, wgpu::RenderPass>, OwningScope<'a, wgpu::RenderPass>, and then empty noops for Scope<'a, wgpu::RenderBundleEncoder> and OwningScope<'a, wgpu::RenderBundleEncoder>

Then I could write my encodings agnostic of wether they support profiling and agnostic of wether they are wgpu::RenderPass or wgpu::RenderBundleEncoder..

Maybe I'm asking for too much magic xD

[Wumpf]

that's nice but also out of place for this PR
Any reason it does 10x retry without pumping the window loop, has this been observed to be actually getting around issues? (I'm curious!)

[EriKWDev]

It failed to acquire sometimes. 10 retires is arbitrary but fixed it for me - Debian 12, wayland.

Have done it this way in other winit applications I have been working on and it seems to work

[Wumpf]

very much open to the idea but for putting this in this needs some more docs and a usage example (and ideally a test) with a real custom scope type

I'm intruiged but also not quite following the wishlist above all the way, can you share some more examples?
I'm slowly booting again having been away from keyboards for a while 😄

[EriKWDev]

As a I said this is perhaps not the best way to do what I really wanted - get something that allows recording to both BundleEncoder, CommandEmcoder and RenderPass