Xtf

From xboxdevwiki
Revision as of 19:20, 12 September 2017 by CobaltHex (talk | contribs)
Jump to: navigation, search
Xbox Font Specimen

XTF is a font file format used in the Dashboard. It became famous for being exploited.

Dashboard fonts

The dashboard fonts were designed by Steve Matteson for use on the Xbox as well as for promotional materials. Matteson would later create the Convection fonts used on the Xbox 360.

Each font contains 7365 glyphs.

Xbox.xtf

A monospace font.

Xbox.xtf from Dashboard.

XBox Book.xtf

XBox Book.xtf from Dashboard.

File format

  • 4 byte (magic)
  • 4 byte (length prefix for following string)
  • zero-terminated string with given buffer length (font-name)
  • GLYPHSET (List of supported glyphs)
  • For each cGlyphsSupported:
  • For each GLYPHSET range
    • For each glyph in this range (stored as a triangle strip)
      • 2 byte (Index count)
      • 2 byte (Vertex count)
      • For each index:
        • 2 byte (Vertex index)
      • For each vertex:
        • 4 byte float (X-coordinate)
        • 4 byte float (Y-coordinate)


[FIXME]

Links