Is the demoscene a source of advancements in computer graphics? I'm interested to know whether the demoscene has historically introduced new techniques that would have otherwise taken longer to discover, contributing to the progress of computer graphics. Has it become more or less relevant over the years?

I know that some of the early demos took advantage of known hardware errors and went beyond what was considered possible at the time, but what I'm interested in is whether any of the new techniques introduced were then taken up by researchers or professional programmers to become part of the mainstream accepted way of doing things.
The demo scene has been doing Ray marching for a long time, but only recently have main stream AAA games started using it.  The main use I've seen it for is for screenspace reflections, raymarching against the zbuffer (killzone, call of duty).  Also, shadertoy was made by inigo quillez, who is from the demo scene.  People are now using shadertoy to prototype and share graphics technique research.  So I'd say the answer is yes, but I'd like to hear more examples if other people have any (: