TKMK00 Compression Format [Hack64 Wiki]

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====== TKMK00 Compression Format ======
TKMK00 is a format for some compressed textures used in the Mario Kart 64 title screen and menus.

===== TKMK00 Decoder =====
The TKMK00 decoder function is located at 800405D0/0411D0 in the Mario Kart 64 (U) ROM. It takes 4 parameters:
^ Param ^ Type ^ Description ^
| A0 | u8* | pointer to input TKMK00 compressed data |
| A1 | u8* | pointer to output buffer (1 byte per pixel) |
| A2 | u16* | pointer to RGBA16 texture output buffer (2 bytes per pixel) |
| A3 | u16 | RGBA mask to clear alpha bit for in output (usually 0x0001 or 0x00BE) |

===== TKMK00 Header =====

^ Offset ^ Length ^ Description ^
| 0x00 | 0x6 | File signature "TKMK00" |
| 0x06 | 0x1 | Bit mask used for offsets at 0xC |
| 0x07 | 0x1 | Unused? (always 0x0F) |
| 0x08 | 0x2 | Output texture width in pixels |
| 0x0A | 0x2 | Output texture height in pixels |
| 0x0C | 0x20 | Array of 8 offsets, used with bitmask at 0x06 |

===== List of TKMK00 Blocks =====

^  Offset  ^  A3  ^  Texture   ^
| 7FA3C0 | 01 | {{https://queueram.com/n64/mk64/tkmk00/01/7FA3C0.png}} |
| 7FAFC0 | 01 | {{https://queueram.com/n64/mk64/tkmk00/01/7FAFC0.png}} |
| 7FB8C0 | 01 | {{https://queueram.com/n64/mk64/tkmk00/01/7FB8C0.png}} |
| 7FBAC0 | 01 | {{https://queueram.com/n64/mk64/tkmk00/01/7FBAC0.png}} |
| 7FBCC0 | 01 | {{https://queueram.com/n64/mk64/tkmk00/01/7FBCC0.png}} |
| 7FBEC0 | 01 | {{https://queueram.com/n64/mk64/tkmk00/01/7FBEC0.png}} |
| 7FC0C0 | 01 | {{https://queueram.com/n64/mk64/tkmk00/01/7FC0C0.png}} |
| 7FC2C0 | 01 | {{https://queueram.com/n64/mk64/tkmk00/01/7FC2C0.png}} |
| 7FC4C0 | 01 | {{https://queueram.com/n64/mk64/tkmk00/01/7FC4C0.png}} |
| 7FC6C0 | 01 | {{https://queueram.com/n64/mk64/tkmk00/01/7FC6C0.png}} |
| 7FC8C0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/7FC8C0.png}} |
| 7FCDC0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/7FCDC0.png}} |
| 7FD2C0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/7FD2C0.png}} |
| 7FD7C0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/7FD7C0.png}} |
| 7FDDC0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/7FDDC0.png}} |
| 7FE1C0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/7FE1C0.png}} |
| 7FE6C0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/7FE6C0.png}} |
| 7FEBC0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/7FEBC0.png}} |
| 7FEFC0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/7FEFC0.png}} |
| 7FF3C0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/7FF3C0.png}} |
| 7FF7C0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/7FF7C0.png}} |
| 7FFCC0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/7FFCC0.png}} |
| 8000C0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/8000C0.png}} |
| 8004C0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/8004C0.png}} |
| 8008C0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/8008C0.png}} |
| 800DC0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/800DC0.png}} |
| 8010C0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/8010C0.png}} |
| 8014C0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/8014C0.png}} |
| 8018C0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/8018C0.png}} |
| 801EC0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/801EC0.png}} |
| 8021C0 | 01 | {{https://queueram.com/n64/mk64/tkmk00/01/8021C0.png}} |
| 802DC0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/802DC0.png}} |
| 8031C0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/8031C0.png}} |
| 8035C0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/8035C0.png}} |
| 8039C0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/8039C0.png}} |
| 803DC0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/803DC0.png}} |
| 8049C0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/8049C0.png}} |
| 804EC0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/804EC0.png}} |
| 8055C0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/8055C0.png}} |
| 805FC0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/805FC0.png}} |
| 806AC0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/806AC0.png}} |
| 806DC0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/806DC0.png}} |
| 8071C0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/8071C0.png}} |
| 8075C0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/8075C0.png}} |
| 8078C0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/8078C0.png}} |
| 807BC0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/807BC0.png}} |
| 807EC0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/807EC0.png}} |
| 8080C0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/8080C0.png}} |
| 8082C0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/8082C0.png}} |
| 8084C0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/8084C0.png}} |
| 8086C0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/8086C0.png}} |
| 8089C0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/8089C0.png}} |
| 808CC0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/808CC0.png}} |
| 808EC0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/808EC0.png}} |
| 8090C0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/8090C0.png}} |
| 8092C0 | BE | {{https://queueram.com/n64/mk64/tkmk00/be/8092C0.png}} |
| 8094C0 | 01 | {{https://queueram.com/n64/mk64/tkmk00/01/8094C0.png}} |
| 8162C0 | 01 | {{https://queueram.com/n64/mk64/tkmk00/01/8162C0.png}} |
| 81F6C0 | 01 | {{https://queueram.com/n64/mk64/tkmk00/01/81F6C0.png}} |
| 8202C0 | 01 | {{https://queueram.com/n64/mk64/tkmk00/01/8202C0.png}} |
| 8209C0 | 01 | {{https://queueram.com/n64/mk64/tkmk00/01/8209C0.png}} |
| 820AC0 | 01 | {{https://queueram.com/n64/mk64/tkmk00/01/820AC0.png}} |
| 820FC0 | 01 | {{https://queueram.com/n64/mk64/tkmk00/01/820FC0.png}} |

===== Software Libraries =====
C: tkmk00: [[https://github.com/queueRAM/tkmk00]]

C#: TKMK00Encoder:[[https://github.com/mib-f8sm9c/MiscellaneousHacks/blob/master/BetaTools/MarioKartTestingTool/TKMK00Encoder.cs]]
===== References =====
  * https://origami64.net/showthread.php?tid=47&pid=3064#pid3064
  * http://acmlm.kafuka.org/archive4/thread.php?id=3283