fbo[i].clear(COLOR_BUFFER_BIT|DEPTH_BUFFER_BIT);
camera.set_look_direction(env_tex.get_face_direction(face));
camera.set_up_direction(env_tex.get_t_direction(face));
fbo[i].clear(COLOR_BUFFER_BIT|DEPTH_BUFFER_BIT);
camera.set_look_direction(env_tex.get_face_direction(face));
camera.set_up_direction(env_tex.get_t_direction(face));