// 'test_pattern', 24x32px
0xff, 0xff, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0xff, 
0xff, 0xfd, 0xff, 0xff, 0xfb, 0xff, 0xff, 0xf7, 0x00, 0x0f, 0xef, 0x00, 0x0f, 0xdf, 0x00, 0x0f, 
0xbf, 0x00, 0x0f, 0x7f, 0x00, 0x0e, 0xff, 0x00, 0x0d, 0xff, 0x00, 0x0b, 0xff, 0x00, 0x07, 0xff, 
0xcc, 0xcf, 0xff, 0xcc, 0xcf, 0xff, 0x33, 0x3f, 0xff, 0x33, 0x3f, 0xff, 0xcc, 0xc0, 0x00, 0xcc, 
0xc0, 0x00, 0x33, 0x30, 0x00, 0x33, 0x30, 0x00, 0xcc, 0xcf, 0xff, 0xcc, 0xcf, 0xff, 0x33, 0x3f, 
0xff, 0x33, 0x3f, 0xff, 0xcc, 0xc0, 0x00, 0xcc, 0xc0, 0x00, 0x33, 0x30, 0x00, 0x33, 0x30, 0x00