DKRDS Texture Group (File Format)

DKRDS Texture Group is the nameless file format used in Diddy Kong Racing DS that stores texture and palette data. This format is also implemented inside other files, such as DKRDS Model and DKRDS Track. Its type identifier in assets.bin is 0x0C.

Header

The file starts with a header that is 4 bytes long.

Offset	Type	Description
0x00	UInt16	Number of textures.
0x02	UInt16	Number of palettes.
0x04	End of header, start of Texture Entries

Texture Entry

After the header there's an entry for each texture. This entry consists of a 20-byte header followed by the texture data. In DKRDS Model files, the textures are referenced in the Texture Reference Table using 4-byte UIDs.

Texture Entry Header

Offset	Type	Description
0x00	Byte[4]	Texture UID. Presumably the checksum of its original file name.
0x04	Byte[4]	Palette UID.
0x08	UInt16	Texture format: 1 = A3I5 2 = 4-Color Palette 3 = 16-Color Palette 4 = 256-Color Palette 5 = 4x4-Texel Compressed 6 = A5I3 7 = Direct Color (RGB5551)
0x0A	UInt16	Flags: 0 = If 1, the texture S component repeats, if 0, it clamps 1 = If 1, the texture T component repeats, if 0, it clamps 2 = Unknown. 3 = Unknown. 4 = Unknown. Seen as 1 when there's an external texture reference 14 = Unknown. Seen as 1 when there's an external texture reference
0x0C	UInt16	Unknown. Maybe TexGen, always 0?
0x0E	UInt16	Number of texture blocks, which is the texture data size divided by 0x10.
0x10	UInt16[2]	Texture dimensions (width and height).
0x14	End of Texture Entry header, start of texture data

Palette Entry

After all the texture entries there's an entry for each palette. This entry consists of an 8-byte header followed by the RGBA5551 palette data.

Palette Entry Header

Offset	Type	Description
0x00	Byte[4]	Palette UID. Presumably the checksum of its original file name.
0x04	UInt16	Palette size in bytes.
0x06	UInt16	Unknown.
0x08	End of Palette Entry header, start of palette data

Tools

The following tools can handle DKRDS Texture Group:

• (none)