Support for GLSL scripting?

I want to re-create some of my effects from Instagram to TikTok, but they all heavily rely on written shader code in GLSL. It seems like the material editor compiles to GLSL but there’s no way to just write code for it directly. The effects I’m really eager to share would be incredibly difficult if not impossible to make with nodes, since their code is so complex. Please give us the option of writing shader code like in Meta Spark Studio.