double sun_radius = sun->Radius();
assets.shaders.sun_surface.SetM(
cam.Model(*sun) * glm::scale(glm::vec3(sun_radius, sun_radius, sun_radius)));
double sun_radius = sun->Radius();
assets.shaders.sun_surface.SetM(
cam.Model(*sun) * glm::scale(glm::vec3(sun_radius, sun_radius, sun_radius)));