GRAF:Aglaia Online

TXB

• Format Type : Compressed image (8bpp or 32bpp)
  
• Endian Order : Little Endian
  
• Forum Threads : None
  
• Date Posted : December 4th 2005 05:22 AM
  

Format Specifications

char {4}     - Header (TXB )
uint16 {2}   - Image Width
uint16 {2}   - Image Height
uint32 {4}   - Palette Type (1/3)
byte {20}    - null

if (paletteType == 1){

// for each color (256)

byte {1}     - Alpha

byte {1}     - Red

byte {1}     - Green

byte {1}     - Blue

}

byte {X}     - Compressed Pixel Data (ZLib)

// When the compressed pixel data is decompressed...{

if (paletteType == 1){

for (width*height){

byte {1}     - Palette Index

}

}

else if (paletteType == 3){

for (width*height){

byte {1}     - Blue

byte {1}     - Green

byte {1}     - Red

byte {1}     - Alpha

}

}

uint64 {8}   - null

byte {16}    - Signature (TRUEVISION-XFILE)

byte {1}     - Tag (0x2E)

byte {1}     - null

}

Notes and Comments

Image Data is a ZLIB compressed buffer (hint : it start with an 'x'). Give it to the uncompress() function of ZLIB and you obtain the uncompressed image. The format of this uncompressed image can be of 2 sort, depending of the Palette Type. Whatever the format, after the pixels it has a footer of 26 bytes. Note that the pixels are from bottom to top, and for each row are left to right. The Alpha Channel is used in certain TXB of the game, it's not here just for padding.

If Palette Type == 1 then the uncompressed image contain palette indexs. Its size is 26 + (Width * Height) bytes.

If Palette Type == 3 then the uncompressed image contain a true color image. Here, the image size is 26 + (4 * Width * height) bytes. Each pixel is in BGRA format.

The footer is 26 bytes, structured like that :

byte {8}  - null

byte {16} - signature "TRUEVISION-XFILE"

byte {1}  - Tag 0x2E

byte {1}  - null

MultiEx BMS Script

Not written yet

Supported by Programs

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Other Games

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