WASM/WebAssembly Support

[davidkutas]

This is a wonderful project.

Are there any tutorials out there to use this with WASM/WebAssembly/esmjs?

[djowel]

I'm sorry, but the project does not (yet) support WASM/WebAssembly/esmjs.

[bruno-j-nicoletti]

I'd be very interested in a WASM/Web build as well. Skia does provide a Wasm build so you can call it from JS, which in theory means it should be possible to backend artist onto Wasm build of Skia so artist/elements based apps will run in the browser. I'm going to have a play with the skia Wasm build and see how much hair I lose in the process of making something work.

https://skia.org/docs/user/modules/canvaskit/

[djowel]

I'd be happy if someone could take the lead on implementing this. Unfortunately, I'm swamped with other projects at the moment.

[bruno-j-nicoletti]

I've spent a fruitless day just trying to figure out google's build system used for Skia. I've gone and asked their mailing list to see if anyone else has had success making a Wasm verions of the skia libs you can link against.

[djowel]

I've spent a fruitless day just trying to figure out google's build system used for Skia. I've gone and asked their mailing list to see if anyone else has had success making a Wasm verions of the skia libs you can link against.

Skia's build system is a PITA! I'll tell you that.

[bruno-j-nicoletti]

I'm currently working on a library that will return a C++ Skia::Surface which will draw onto an HTML canvas. I'll package this all up into a new repo. That will at least be the start of a WASM/Web port of elements.

Currently I've bodged something that does call into C++ compiled to WASM to do the drawing, but it's ugly and hacked out of a cut down version of their CanvasKit JS module, which gives JavaScript bindings to Skia. I've a screenshot of it in action.

FWIW, someone has just put together a repo that simplifies the building of skia on all platforms, see https://github.com/olilarkin/skia-builder.

[bruno-j-nicoletti]

That was a more surprisingly horrible task than I thought it would be, even though I knew it was going to horrible.

In my spare time I've put a C++ library together than packages up all the skia web binding code and let you run a C++ program that pipes skia calls to a browser canvas. Still a work in progress, but getting close. I need to incorporate skia into the build process as it currently relies on an external canvaskit wasm build of skia.

https://github.com/bruno-j-nicoletti/SkiaWebBind

[djowel]

That was a more surprisingly horrible task than I thought it would be, even though I knew it was going to horrible.

In my spare time I've put a C++ library together than packages up all the skia web binding code and let you run a C++ program that pipes skia calls to a browser canvas. Still a work in progress, but getting close. I need to incorporate skia into the build process as it currently relies on an external canvaskit wasm build of skia.

https://github.com/bruno-j-nicoletti/SkiaWebBind

Wow, I can imagine what a horrible task that would be!