error CS0122: 'CodeFunctionNode' is inaccessible due to its protection level about shader-graph-nodes

[gilescoope]

Yeah unfortunately Unity removed this method of generating shader nodes. There is now a custom function node where custom shaders can be typed in. It isn't as robust however as the old method. In any case you should be able to copy the code for any of the shader nodes I've written here and set up the inputs and outputs correctly yourself.

[neon-age]

I've added support for newer Unity versions by using AsmRef! See #5 🙂