- const glm::dvec3 step_x(normalize(cross(normal, glm::dvec3(normal.z, normal.x, normal.y))));
- const glm::dvec3 step_y(normalize(cross(step_x, normal)));
+ const glm::dvec3 step_x(glm::normalize(glm::cross(normal, glm::dvec3(normal.z, normal.x, normal.y))));
+ const glm::dvec3 step_y(glm::normalize(glm::cross(step_x, normal)));