compute_pq
compute_pq(x, &output);
compute_pq(input_x, &E1);
compute_pq(dc_fixpt_div(min_display, max_content), &min_lum_pq);
compute_pq(dc_fixpt_div(max_display, max_content), &max_lum_pq);
compute_pq(dc_fixpt_one, &max_content_pq); // always 1? DAL2 code is weird