I am trying to write a 3d Renderer in C using SDL and cgml but my shading seems to be not working correctly. When rendering the teapot I get seams and when I want to render a cube I get a bright white line between my triangles. I am pretty sure that I calculate my normals correctly but I can show that code too if necessary.
All my math functions like v3_normalise / cam_perspective should be correct too because they are just aliases for cgml functions.