Support user defined shaders

[coreymwamba]

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This is more of an feature request: when I used to use i3 I also used picom's legacy glsl shaders to turn my screen from RGB to grayscale, or invert the colours. Having looked at the source code for scenefx (after trying—and failing—to write a script that could modify gamma ramps in wlroots) I see that it uses gles fragment shaders.

So would it be possible to add that functionality to scenefx (and thus swayfx)?

[WillPower3309]

This is a good idea! I think what we want here is essentially https://github.com/WillPower3309/swayfx/issues/110

[coreymwamba]

I'm really sorry I can't help much more—I'm still learning C! But am I right in thinking that you'd need to modify the files in include/render/fx_renderer?

[WillPower3309]

tracked by https://github.com/wlrfx/scenefx/issues/60

[WillPower3309]

closing as duplicate