Procedural surface bumps (cellular noise); Procedural surface bump normals; Procedural TBN matrix calculation (Including Gram-Schmidt re-orthogonalization process) Normals perturbation; Parallax mapping (simple and occlusion) from https://learnopengl.com/Advanced-Lighting/Parallax-Mapping Bugs: NORM_METHOD == 1 looks bugged. Why? Shows "Shader Error!", although it's loop unroll warning Teapot handle has wrong model normals (see incorrect shading)?
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