MacroQuad with shaders don't work in WASM

[Ozombia]

Thanks for MacroQuad, a nice way to learn Rust for a newbee like myself.
I think i am going to love it so much, i want to use it in production. But I have a problem with compiling to WASM.

1. Snake compiles to WASM, and works in the browser:
   https://github.com/not-fl3/macroquad/blob/master/examples/snake.rs

2. Shadertoy compiles to WASM, but does not work in the browser (tested in recent Chrome, Brave)
   https://github.com/not-fl3/macroquad/blob/master/examples/shadertoy.rs

I think Snake (1) uses a html 2d canvas, and Shadertoy (2) uses a html 3d canvas (with Shaders).
Is using a 3d canvas a problem for WASM?

Shadertoy has a lot of errors is the browser inspector console:

No __wbindgen_string_new function in gl.js
add_missing_functions_stabs @ mq_js_bundle.js:3
(anonymous) @ mq_js_bundle.js:3
Promise.then (async)
load @ mq_js_bundle.js:3
(anonymous) @ (index):27
mq_js_bundle.js:3 No __wbindgen_is_object function in gl.js
add_missing_functions_stabs @ mq_js_bundle.js:3
(anonymous) @ mq_js_bundle.js:3
Promise.then (async)
load @ mq_js_bundle.js:3
(anonymous) @ (index):27
mq_js_bundle.js:3 No __wbindgen_is_string function in gl.js
add_missing_functions_stabs @ mq_js_bundle.js:3
(anonymous) @ mq_js_bundle.js:3
Promise.then (async)
load @ mq_js_bundle.js:3
(anonymous) @ (index):27
mq_js_bundle.js:3

...

mq_js_bundle.js:3 WASM failed to load, probably incompatible gl.js version

[not-fl3]

__wbindgen_string_new

this means you are using wasm-bindgen. Wasm-bindgen requires post-processing your .wasm file with a third party binary tool. Its not very easy to set up, there is a script someone posted that might help with that: #212 (comment)

You can also search for wasm-bindgen here on github, there was a lot of issues about that.