Ladonna, if you used BB's mathmatic script to generate the shader, you did not make the shader "from scratch". You just used the source code. 

You cannot copyright formulas, that would need a patent. But you should write your own source code if you want to avoid copyright problems, generally speaking.

I doubt very much that any court, anywhere, would uphold a copyright claim on a shader generated from code. If that was the case, any document created in a word processor, spreadsheet etc would also fall into your "you just used the source code category." and therefore, any document created inside it would be the property of the original source code owner, eg. Microsoft.   How many people can code a word processor from scratch?

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