This is the specifications for the image file which is handled by the Game Extractor plugin Viewer_PPF_PPAK_1TX_XT1.

Endian Order:Little Endian
Compression:none
Encryption:None


This format is used by the following Games:
Psychonauts *.1tx


This is the format specification information:
 
40 - Unknown
    2 - Filename Length (including Null Terminator)
    X - Filename
    1 - null Filename Terminator
    4 - Unknown
    4 - Image Format (11=DXT5, 10=DXT3, 9=DXT1, 0=ABGR)
    4 - null
    4 - Unknown
    4 - Image Width
    4 - Image Height
    4 - Mipmap Count
    8 - Unknown
    8 - null
    X - Image Data


Game Extractor is able to read files of this type, as well as files from thousands of other games. To give it a try, download Game Extractor (Basic Version) for free, and see what it can do.

For further information on this format, refer to the source code on our GitHub repository.
 
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