SRU_MIN_SIZE
fmt->width = clamp(fmt->width, SRU_MIN_SIZE, SRU_MAX_SIZE);
fmt->height = clamp(fmt->height, SRU_MIN_SIZE, SRU_MAX_SIZE);
sru->entity.min_width = SRU_MIN_SIZE;
sru->entity.min_height = SRU_MIN_SIZE;