Shaders are best experienced on Turbowarp: https://turbowarp.org/520187799?turbo Turbo mode See inside for the tutorial. Studio: https://scratch.mit.edu/studios/29420830/
NOTE: This is the absolute basics, but everything still applies to more advanced projects in some way or another. I accidentally deleted the tutorial, I am fixing it, please be patient. Please remix, be sure to use #shader