void tangent(const Vector3 &t)
{ attrib(get_attribute_semantic(TANGENT3), mtx*Vector4(t.x, t.y, t.z, 0)); }
void tangent(const Vector3 &t)
{ attrib(get_attribute_semantic(TANGENT3), mtx*Vector4(t.x, t.y, t.z, 0)); }
void texcoord(float s)
{ texcoord(s, 0, 0, 1); }
void texcoord(float s)
{ texcoord(s, 0, 0, 1); }