Lighting not changing on model when rotated.

[ActingBadly]

Lighting does not change on the model when it is rotated. I corrected this by adding the following at the bottom on your default.vert shader replacing "normal = updatedNormal;" Seems to work nicely now. Great work, this really helped me get my code working. Cheers.

mat3 normalMatrix = transpose(inverse(mat3(M)));
normal = normalize(normalMatrix * updatedNormal);