LIGHT_XRES
rex_fill_rect(dc, 0, 0, LIGHT_XRES - 1, LIGHT_YRES - 1, 0);
width = LIGHT_XRES;
to_x = LIGHT_XRES - 1;
fbinfo->width = LIGHT_XRES;
rex_fill_rect(c, 0, 0, LIGHT_XRES-1, LIGHT_YRES-1, 0);