Switch to web-sys instead of stdweb.

[sebcrozet]

It appears that stdweb is mostly dead so I would like to switch to web-sys/wasm-bindgen instead. This is a breaking change because:

• This completely removes the stdweb dependency in favor of web-sys.
• This uses glow instead of our generated webgl/opengl bindings.

[alvinhochun]

I've given it a few tries and had commented on it on discord, so I'm repeating them here for completeness.

On web it works mostly fine but I found some issues:

1. Right-click context menu isn't prevented from showing.
2. After Esc is pressed (thus ending the Kiss3d render loop), I continuously get uncaught error "closure invoked recursively or destroyed already" in the console.
3. Maybe one more (but might not be a regression): if the window is small enough that the canvas has a size of 0, it panics with "The aspect ratio must not be zero".

Running on native Windows results in an assertion failure panic in Effect::drop when closing the Kiss3d window.

[alvinhochun]

@sebcrozet You mentioned on discord that "glow does not have functions like is_shader, is_program etc.", can you open an issue on the glow repo to ask for them to be added?

[sebcrozet]

Thank you for your feedbacks @alvinhochun.

You mentioned on discord that "glow does not have functions like is_shader, is_program etc.", can you open an issue on the glow repo to ask for them to be added?

I opened a glow issue about the missing is_ functions.

Running on native Windows results in an assertion failure panic in Effect::drop when closing the Kiss3d window.

If I remember correctly this was fixed in earlier versions of Kiss3d by validating that the shaders/programs being dropped are valid using the is_shader/is_program functions. So it is likely the problem appears again because of the lack of validation function in glow.

Right-click context menu isn't prevented from showing.

Looks like something that should be configured in the <canvas style.

After Esc is pressed (thus ending the Kiss3d render loop), I continuously get uncaught error "closure invoked recursively or destroyed already" in the console.

Weird, will have to investigate this.

Maybe one more (but might not be a regression): if the window is small enough that the canvas has a size of 0, it panics with "The aspect ratio must not be zero".

This may be an assertion that did not exist before.

[alvinhochun]

Right-click context menu isn't prevented from showing.

Looks like something that should be configured in the <canvas style.

Oh, for some reason I thought the past stdweb version called e.preventDefault() but looks like both versions actually behave the same way. Not a regression I suppose.

Maybe one more (but might not be a regression): if the window is small enough that the canvas has a size of 0, it panics with "The aspect ratio must not be zero".

This may be an assertion that did not exist before.

Actually not a regression. The stdweb version also panics. Looks like it is caused by the camera code calling Perspective3::set_aspect() for the FramebufferSize event even when w is 0.0, so not related to this change. Should be fixed separately though.

[alvinhochun]

You mentioned on discord that "glow does not have functions like is_shader, is_program etc.", can you open an issue on the glow repo to ask for them to be added?

I opened a glow issue about the missing is_ functions.

Running on native Windows results in an assertion failure panic in Effect::drop when closing the Kiss3d window.

If I remember correctly this was fixed in earlier versions of Kiss3d by validating that the shaders/programs being dropped are valid using the is_shader/is_program functions. So it is likely the problem appears again because of the lack of validation function in glow.

#242 should fix these issues.

[alvinhochun]

After Esc is pressed (thus ending the Kiss3d render loop), I continuously get uncaught error "closure invoked recursively or destroyed already" in the console.

@sebcrozet I suppose the only remaining blocker is this? I'm looking into it. PR #247 should fix this issue.

[sebcrozet]

Fixed the CI. Let's merge this! thanks @alvinhochun for the additional fixes 💯