Minify GLSL about gltf

[fabrobinet]

Frankly, when you look at the XHR answer of a glsl file - which is gzip, it is so small that I don't see much value of just of a size reduction, if there are more clever optimization that can benefit runtime speed then it would be good...

[ryu2]

Something like this, I guess: https://github.com/aras-p/glsl-optimizer

[fabrobinet]

Yeah, that looks very interesting, thanks.

[pjcozzi]

We are tracking glsl-optimizer in #34. It has some promise, but did not work in all cases.

I agree that minification is minor. We did see an improvement compared to just removing whitespace (~20% ?), but we didn't test gzip.

I'd leave this open as a low-priority since anything we can do reasonably to get our payload size down is a good thing.

[zz85]

I came to this issue by chance, just wanted to add that there's an online/js version of glsl-optimizier if anyone's interested to try it. http://zz85.github.io/glsl-optimizer/

[pjcozzi]

Cool, thanks for sharing @zz85!

[pjcozzi]

Moving to gltf-pipeline so it is useful to all exporters/converters, see CesiumGS/gltf-pipeline#1.