Bohemia Interactive PAA PAC
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PAA, PAC
- Format Type : Image
- Endian Order : Little Endian
- Signatures : GGATCGVA / GGATCXAM / GGATSFFO / GGAT
Format Specifications
// PAA / PAC file format
// Based on https://community.bistudio.com/wiki/PAA_File_Format
// IMAGE HEADER
2 - Image Format (65281=DXT1, 65282=DXT2, 65283=DXT3, 65284=DXT4, 65285=DXT5, 17476=RGBA4444, 5461=RGBA5551, 34952=RGBA8888, 32896=Gray with Alpha)
// TAGS
// for each tag
4 - Tag Header (GGAT)
4 - Tag Type String
4 - Length of Tag Data
X - Tag Data
// PALETTE
2 - Number of Colors
// for each color
1 - Blue
1 - Green
1 - Red
// MIPMAPS
// for each mipmap
2 - Width
2 - Height
3 - Image Data Length
X - Image Data
if (ImageFormat == DXT# && width&32768 == 32768){
// image data is LZO Compressed
}
else if (ImageFormat != DXT#){
// image data is LZSS Compresed
}
else {
// raw image data
}
Notes and Comments
- This file format occurs in games from Bohemia Interactive.
- This file format supports several tag types:
- AVGCTAGG / GGATCGVA (AVGC / CGVA) - average colour
- MAXCTAGG / GGATCXAM (MAXC / CXAM) - color of brightest pixel in texture?
- FLAGTAGG / GGATGALF (FLAG / GALF) - marks if texture contains transparency
- SWIZTAGG / GGATZIWS (SWIZ / ZIWS) - optional swizzling description
- PROCTAGG / GGATCORP (PROC / CORP) - non ASCII string
- OFFSTAGG / GGATSFFO (OFFS / SFFO) - mipmap offset list
Games
List of games using this file format:
- Argo
- Arma 1
- Arma 2
- Arma 2: Operation Arrowhead (*.PAA / *.PAC)
- Arma 3
- Operation Flashpoint
QuickBMS Script
Not written yet.
Compatible Programs
- BI Tools
- Texture Viewer (TexView2) from BI Tools - it can convert and view PAC/PAA files
- Texture Merger (texMerge) from BI Tools - it can merge PAC/PAA/TGA files and save them as TexMerger files (PTM files)
- Pal2PacE from BI Tools - command line tool for texture conversion (more info here). It can convert JPG/PNG/TGA to PAA/PAC and PAA/PAC to JGP/PNG/TGA files.
- DePac
- ImageToPAA (from Arma 3 tools)
Gallery
-
Texture Viewer (from BI Tools)
-
Texture Merger (from BI Tools)
See Also