Even when I remove all rendering and just run the Go WASM in a web worker,
like this:
const go = new Go();
WebAssembly.instantiateStreaming(fetch("web2600.wasm"),
go.importObject).then((result) => {
go.run(result.instance);
});
The binary is still performing a long way below native performance. I'm
writing to the web console with println() to indicate progress but apart
from that there is no communication between Go and the browser.
I haven't looked into RequestAnimationFrames yet but I did try the Ebiten
option. The profile looks similar to the Doom profile (with
RequestAnimationFrames) but even then the emulation is running slower than
native.
Worth emphasising that in the case of my Ebiten version, exactly the same
Go code is being compiled for native CPU and WASM.
My next step (which won't be for a few days at least) is to learn a bit
more about WebAssembly and to take a look at the code that's being
generated.
On Wednesday, 8 September 2021 at 03:47:42 UTC+1 da...@suarezhouse.net
wrote:
> Did moving rendering to the browser side (just have the other side prep
> the data to be rendered) solve for the difference? how much? Did he do
> the same in the Doom article to get it to OK?
>
> On 09/07/2021 8:34 AM Stephen Illingworth <stephen.i...@gmail.com> wrote:
>
>
> Yes. I'm seeing a 10x difference in speed too. So at least I know I'm not
> doing anything fundamentally wrong. It's a general problem at the moment.
>
> Thanks.
> On Tuesday, 7 September 2021 at 09:31:41 UTC+1 ma...@eliasnaur.com wrote:
>
> In my experience (Gio projects), WASM is very slow compared to native
> code; my investigations are part of #32591. You may find
> https://github.com/golang/go/issues/32591#issuecomment-517835565
> relevant, because I cut out rendering to eliminate the JS<=>Go crossing
> overhead. It was a ~10x difference in 2019 and I don't think anything major
> has changed since then.
>
> Elias
>
>
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>
>
>
> Sincerely,
>
> David Suarez
>
> Gallup Strengths Finder: Achiever * Strategic * Relator * Ideation *
> Learner
>
> https://www.linkedin.com/in/davidjsuarez/
>
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