made some more progress... will try to keep at it but now run into the surface stuff which gave some trouble last time and is also really OS specific.

It might be worth to automatically generate the code for all these callback and callbackInfo structs or at least add the header info - I haven't tried to look into how the codegen actually works.

more progress for today... got the first examples to run:

will hopefully find sometime tomorrow and keep at this pace.

all the examples have passed today, also most tests.
remaining issues with tests: limits for constants, something related to entry points (which changed to the WGPUStringView)

Thanks for this amazing piece of work @Vipitis! This was not a small update 😉. I have read through all the changes, and made myself a list to look at some points more closely. I'll just push to this branch.

This is ready from my end. I ran the tests, examples, also for pygfx, on MacOS, WIndows, and Linux, and all is looking good!

@Vipitis feel free to comment on my changes. Let's not merge this until you're happy too.

@almarklein thanks for the improvements. I followed this closely and it looks good to me!

Regarding the difference between null string and empty string: there is no test that specifically requires the empty string, not sure where this would even be the case. when not specifying an entry point for example you specifically need it to be this null string. Perhaps empty string is more of an output use case for WGPUStringView

For the view usages I branched off my example and will modify it in the next couple of days to test and show it's functionality and then hopefully have it in shadertoy soon.

there is no test that specifically requires the empty string, not sure where this would even be the case.

I guess the behavior depends on the case. Thinking of it, maybe it would be cleaner to also use the null-string if no label is provided.

As for the entry_point, if the user sets it to None, it will become the null-string, so this should be fine.

@Korijn This is ready from our (Jan and me) end 🚀

Let's make a release real soon. I'll have a quick look a updating idl.