.z, nm.x, nm.y, nm.z, uv2.x, uv2.y, tangent1.x, tangent1.y, tangent1.z, bitangent1.x, bitangent1.y, bitangent1....z,
pos3.x, pos3.y, pos3.z, nm.x, nm.y, nm.z, uv3.x, uv3.y, tangent1.x, tangent1.y, tangent1....z,
pos4.x, pos4.y, pos4.z, nm.x, nm.y, nm.z, uv4.x, uv4.y, tangent2.x, tangent2.y, tangent2...< tangent2.r << " " << tangent2.g << " " << tangent2.b << std::endl;
std::cout << "bitangent2...: " << tangent1 << std::endl;
// std::cout << "tangent2: " << tangent2 << std::endl;