Function rusty_engine::prelude::glm::mat4_to_mat3

pub fn mat4_to_mat3<N>(
    m: &Matrix<N, U4, U4, <DefaultAllocator as Allocator<N, U4, U4>>::Buffer>
) -> Matrix<N, U3, U3, <DefaultAllocator as Allocator<N, U3, U3>>::Buffer> where
    N: Scalar, 

Converts a 4x4 matrix to a 3x3 matrix.