Difference between revisions of "FTEX (File Format)"

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Revision as of 08:45, 8 April 2017

Under Construction
This article is not finished. Help improve it by adding accurate information or correcting grammar and spelling. Please do not add speculation here.

The FTEX texture format is a format for textures which appears as a subfile of a BFRES file.

Header (FTEX)

Every FTEX file begins with an 0xC0 byte FTEX header that starts with the file identifier, followed by info about the image.

Offset Size Description
0x00 4 "FTEX" File identifier, ASCII string.
0x04 4 Dimension. Indicates the "shape" of a given surface or texture (see line 849 here).
0x08 4 Texture Width. Width of the texture in pixels.
0x0C 4 Texture Height. Height of the texture in pixels.
0x10 4 Depth.
0x14 4 Number of Mipmaps.
0x18 4 Texture Format. Go to line 589 on this page for explanation and format values.
0x1C 4 AA Mode. Indicates the AA mode (number of samples) for the surface (see line 865 here).
0x20 4 Usage. Indicates how the given surface may be used (see line 823 here).
0x24 4 Data Length. Length of texture data in bytes.
0x28 4 Data Pointer?
0x2C 4 Mipmaps Data Length. Length of mipmaps data in bytes.
0x30 4 Mipmaps Pointer?
0x34 4 Tile Mode. Indicates the desired tiling mode for the surface (see line 795 here).
0x38 4 Swizzle Value.
0x3C 4 Alignment. Always 512 * bytes per pixel.
0x40 4 Pitch.
0x44 0x0D Mip Offset. Offset for each mipmap?
0x51 0x2B Unknown. Mipmaps related. (Always 0 in textures with no mipmaps)
0x7C 4 Number of Mipmaps. Again...
0x80 4 Unknown. Always 0.
0x84 4 Unknown. Always 1.
0x88 4 Unknown. Always 0x00010203. (Is this some kind of a pattern? 00->01->02->03)
0x8C 0x14 Unknown.
0xB0 4 Data Offset. Offset to the texture data. Relative to this field.
0xB4 4 Mipmap Offset. Offset to the mipmap texture data. Relative to this field. 0 if not present.
0xB8 8 unknown
0xC0 End of FTEX header

Incomplete header documentation. Last 8 words (32 bytes) seem to change per file. Offset 160 (dec) from FTEX header always seems to be zero, followed by a single byte (value of 1), 3 padding bytes, then a relative offset to the string table, then a relative offset to UnknownDataA, a relative offset to UnknownDataB, a relative offset to unknown DataC, and then two more unknowns (usually zero).