Yes, I covered Blinn-Phong in detail. I have always included fallback textures, but I'm not going to encourage anyone not to update to PBR and learn to work with it, unless their system is incapable of handling it. There will come a time at some point in the future, however, as PBR adoption increases, that I will stop adding textures for older viewers. I am an artist foremost, and as such I am committed to adopting better tools as they become available to better translate into virtual the vision that it is in my head.
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