Run Pebble OS in Browser via WASM

(ericmigi.github.io)

103 points | by goranmoomin 9 hours ago ago

14 comments

  • ezulabs 4 hours ago

    Can already see a nice web based AI app builder on the way, also can be used to quickly try apps before pushing to the device as interactive app store.

    Please watch out some qemu targets for Cortex m0 or m3, increasing ram from linker out of supported ranges will cause random crashes. Would love to contribute if you are looking for people to crash some issues.

    Awesome effort btw.

  • KetoManx64 8 hours ago

    I'm blow away at what Devs are able to do within a browser nowadays.

    • pjmlp 3 hours ago

      You could have done the same with plugins in the past.

      • afavour 20 minutes ago

        And now we don't need to use them and expose ourselves to security vulnerabilities. Win win.

    • bossyTeacher 6 hours ago

      More that browsers have gotten sprouted downwards and obtained all sorts of low level access than older browsers didn't use to have. I believe this is partially why tools that were meant to just render markup have gotten so complex to build that a small team of devs is not enough to build a modern browser anymore. And by that I mean from scratch, not just piggybacking on Chromium or Gecko.

      • idle_zealot 4 hours ago

        > I believe this is partially why tools that were meant to just render markup have gotten so complex to build that a small team of devs is not enough to build a modern browser anymore.

        Isn't it basically the opposite? The hard parts of the browser are layout, styling, and multimedia stuff that goes into rendering markup compliantly. Then there's the infinite sink of optimization work for a JS engine, the high-level scripting language for that markup. The low level access that something like this emulator use is comparatively easy; a WASM runtime and Canvas blitting pixels from some shared buffer.

        Or am I mistaken that a WASM engine is much easier to build than a performant JS engine?

  • mischief6 5 hours ago

    08:46:37.125 [err] [fps] 4.0 (12 frames in 3.0s) 08:46:40.225 [err] [fps] 1.0 (3 frames in 3.1s) 08:46:41.224 FIRM | * ASSERTION FAILED: ASSERTN 08:46:41.443 [err] DEBUG post-reset: halted=0 stopped=1 R13=0x20002170 R15=0x080001b4 thumb=1 08:46:42.123 [err] clktree_recalc_output_freq: Clock PCLK1 output frequency (32000000 Hz) exceeds max frequency (30000000 Hz).

    found an assertion just by clicking up/down. doesn't seem too stable.

    • cpfleming 5 hours ago

      Yeah that happens when trying to go up into the timeline.

  • donohoe 4 hours ago

    Any way to load a local watch-face? Am hoping there is and I didn't see it. This would be very helpful for testing.

  • mmmlinux 6 hours ago

    Should I be getting more than .2 FPS?

    • davsti4 6 hours ago

      I'm not even getting that - its stuck at: 10:26:18.027 Downloaded SPI flash: 16777216 bytes 10:26:18.027 [config] icount: off 10:26:18.028 [status] Loading QEMU WASM module (17MB)...

  • pmkary an hour ago

    Cool cool cool

  • hemmert 5 hours ago

    Pretty impressive!

  • zb3 6 hours ago

    Probably could be made faster by:

    - using native exception handling

    - getting rid of asyncify (but it would require JSPI)

    See my experiments with TempleOS here: https://zb3.me/qemu-wasm-test/