Blitz Games Wii/GC Textures

[HorsePlant]

These are textures from SpongeBob's Atlantis SquarePants for Wii, which uses Blitz Games' proprietary texture format that tools like TextureFinder can't seem to decipher. Any help would be appreciated.

 

SBAtlantis_Wii_SomeTextures.zip

[piken]

The texture here consists of 16-bit pixels 256x256 with GameCube 4x4 subtiling.

• First, byte-swap every 8 bits per 16 bit pixel to put the low bits back into the low byte (GameCube was reversed endian).
• Wrap the 16-bit pixels into 4x4 tiles, then wrap tiles to image width.
• Each pixel is:

struct PixelFormat
{
    blueUnorm5 b;
    greenUnorm5 g;
    redUnorm5 r;
    alphaPremultipliedUnorm1 a;
}

TiledGGD 2.1.2.1 can handle this:

Edited December 13, 2023 by piken
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