Add shader support

[TristanCacqueray]

Example: https://github.com/felixroos/nudel/pull/41

It's still unclear how to let strudel/hydra/shader pass value between each other. I don't know much about hydra, but I think we should figure out how it can use the webgl canvas as a source for further processing. Then we would have:

[strudel pattern]   --> [shader uniform] --> [hydra source image]

Demo in action: https://www.youtube.com/watch?v=o3Zy4Dwqw7U

[munshkr]

Love the idea of having raw shaders in Flok!

It's possible you could pass the shader as a hydra "source", but I don't know how hard this would be in general.

About data passing between languages, it's a big topic but super interesting and it'd be great to have a way to integrate all visual languages with sound languages. We can start with this particular case to start playing with the idea.

[TristanCacqueray]

That's great to hear, it looks like this feature could be implemented similarly to #322 .

For reference, here is an earlier prototype: tidalcycles/strudel#1196 and a companion post: https://github.com/mrange/shader-advent-2024/blob/main/day-02/SmoothMidiModulation.md