WebAssembly support?

[Zentendo]

@bvssvni @shinmili Does this backend run with WebAssembly? Particularly with the wgpu 0.11 WebGL 2 backend support: gfx-rs/wgpu@312828f

[shinmili]

I expect this backend should be able to used on wasm (even with wgpu 0.10, using WebGPU backend), but haven't tried it because of my lacking of wasm experiences.

Particularly about WebGL 2 backend, there is no support because this crate depends on wgpu 0.10 for now. Updating to 0.11 will only affect examples codes and won't be really hard.

[shinmili]

Okay, basically it supports WebAssembly! Here is a sample you can try and run.

The sample project depends on a patched version of this crate including the following changes:

• Update wgpu to 0.11 (because I can't figure out how to enable WebGPU on my browsers)
• Remove Wgpu2d's lifetime parameter (because winit event loop requires captured objects to be 'static)