- GL::MatrixStack::Push push_mtx(GL::MatrixStack::modelview());
- GL::Matrix matrix = track.get_matrix();
- matrix.translate(0, 0, z_offs);
- GL::MatrixStack::modelview() *= matrix;
+ GL::MatrixStack::Push push_mtx(renderer.matrix_stack());
+ renderer.matrix_stack() *= track.Object3D::get_matrix();
+ renderer.matrix_stack() *= GL::Matrix::translation(0, 0, z_offs);