roms built with latest uxn aren't working

[la-ninpre]

i tried to run webuxn locally, then i loaded piano.rom which i just compiled with latest version of uxn and it is just a black screen.

for comparison, if i take piano.rom from this repo, it runs fine.

i am not at all an expert in wasm and stuff, but maybe there was some incompatible change in upstream uxn?

both roms run fine with uxnemu though...

UPD: tested old roms with current uxnemu, and they aren't working.

[aduros]

I think there have been upstream breaking changes to uxn. It's hopefully just a matter of pulling in the latest C sources (uxn-fast.c, ppu.c, etc) from upstream though.

If you get it working, can you please open a PR?

cc @neauoire who probably knows more about it.

[neauoire]

yup, it's just a matter of pulling the latest changes, it should work right off :)

[la-ninpre]

i haven't get it working yet. i'll try, though. and if it'll be successfull, i'll make a pull request.

oh, and also, kinda aside question: on which platform and using what tools webuxn is supposed to be built? i'm asking because the build fails for me in archlinux…

[aduros]

You'll need at least emcc from emscripten, and nodejs to build the JS side.

[la-ninpre]

hmm, maybe i'm doing something wrong, but when i put new uxn-fast.c, apu.{h,c}, ppu.{h,c} and uxn.h it doesn't work at all. it seems that a lot of functions now have different names and even different prototypes. like, really, there are a lot of changes and that needs a bit of research, because, for example, there are no Layer struct in new uxn, there are no WIDTH and HEIGHT defines and so on…

[neauoire]

Ah damn, that's true, the Layer is just a number(0-1) now.
The WIDTH and HEIGHT defines are still there?
https://git.sr.ht/~rabbits/uxn/tree/main/item/src/uxnemu.c#L24

[la-ninpre]

hmm, WIDTH' and HEIGHT are there, but they are defined in uxn.c which is not used in webuxn. there is only uxn-fast.c.