Way to log/debug printf in WGSL

[Anutrix]

Is your feature request related to a problem? Please describe.
I just started learning wgpu and wgsl and I want to debug/log print in shaders to understand concepts but there doesn't seem to be a way to do it.

Describe the solution you'd like
Basically #4297 seems to be what I want but there didn't seem like there was a issue ticket for it.

Describe alternatives you've considered
Couldn't find alternative yet. Still looking.

Additional context
Add any other context or screenshots about the feature request here.

[billti]

Just to plus 1 on this. I love this project and I'm enjoying using it, but I really miss the ability to log from a shader, else debugging is such a pain (i.e., such as https://developer.apple.com/documentation/metal/logging-shader-debug-messages).

Is there a desire to keep WGSL "pure"? I don't see any logging APIs in the spec, so it would be a shame if that's the limiter.

[Wumpf]

Is there a desire to keep WGSL "pure"?

Naga already has various experimental extensions to Wgsl syntax like raytracing support to texture binding arrays. So native-only behind feature flags everything goes more or less