#define sbump_width 16
#define sbump_height 16
static char sbump_bits[] = {
 0xaa,0xaa,0x5d,0x55,0xae,0xaa,0x57,0xd5,0xaa,0xaa,0x15,0x55,0x8a,0xaa,0x55,
 0x5d,0xaa,0xaa,0x55,0x5d,0xaa,0xae,0xd5,0x57,0xaa,0xaa,0x55,0x15,0xaa,0x8a,
 0x5d,0x55};