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This wiki shows documentations of Gfx2 (.gtx) file format.

File Header

The file header consists of 12 bytes:

---

Offset: 0x00
Size: 4
Description: File identifier, always 0x47 0x66 0x78 0x32 (Gfx2)

---

Offset: 0x04
Size: 4
Description: Unknown, always 0x20 in NSMBU

---

Offset: 0x08
Size: 4
Description: Unknown, always 0x07 in NSMBU

---

Offset: 0x0C
Size: 4
Description: Unknown, always 0x01 in NSMBU

---

Offset: 0x10
Size: 4
Description: Unknown, always 0x02 in NSMBU

---

Offset: 0x14
Size: 4
Description: Unknown, always 0x01 in NSMBU

---

Offset: 0x18
Size: 4
Description: Padding, always 0x00 in NSMBU

---

Offset: 0x1C
Size: 4
Description: Padding, always 0x00 in NSMBU

---