In this video, we finish up normal mapping, and implement a model that can be generalized to any type of model with any type of transformation, using tangent spaces. • VERTEX SHADER FIX: it turns out that we need to calculate the tangent space matrices and positions in the vertex shader using a different method when not using a normal map. When we use a normal map, we need to transform to the tangent space, otherwise all calculations can be done in world space without any extra complexity. Here is the fix: https://github.com/michaelg29/OpenGLTutorial/commit/72e668052200bb7000419ad792e4a976fad9aa15 • Thorough explanation: https://learnopengl.com/Advanced-Lighting/Normal-Mapping • Website: https://michaelg29.github.io/ • Twitter: https://twitter.com/MichaelGrieco10 • Discord: https://discord.gg/Uj54bDF • This Github Repo: https://github.com/michaelg29/yt-tutorials • This Playlist:    • C++ OpenGL Tutorial   Listened to the Hyper Light Drifter OST by Disasterpeace (music.disasterpeace.com).