REX_P0REG_XENDI
rex_write(dc, REX_PAGE0_SET, REX_P0REG_XENDI, to_x + width);
rex_write(dc, REX_PAGE0_SET, REX_P0REG_XENDI, to_x);
rex_write(dc, REX_PAGE0_SET, REX_P0REG_XENDI, x + font->fontwidth - 1);