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linux-wallpaperengine/docs/textures/TEXTURE_FORMAT.md
Alexis Maiquez Murcia e62ea3e2be + Updated .gitignore 
- Removed config class as It's no longer used
+ Added a small readme with all the documentation needed up to now
+ Changed the way the application starts to take into account execution switches to allow the users to select a background without recompiling the software

Signed-off-by: Alexis Maiquez Murcia <almamu@almamu.com>
2019-04-05 16:41:33 +02:00

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Texture storage format

Wallpaper engine uses a custom texture storage format converted by resourcecompiler.exe

Header

Information Size Default value
File type indicator 8 bytes TEXV0005
Padding 1 byte Null terminator for string
Extra file type indicator? 8 bytes TEXI0001
Padding 1 byte Null terminator for string
Texture type 1 byte 4 => DXT5? 0 => JPEG?
Unknown data 15 bytes To be reversed
Width 4 bytes Image's width
Height 4 bytes Image's height
Unknown data 5 bytes To be reversed
Container version 8 bytes TEXB0003
Padding 1 byte Null terminator for string
Unknown data 8 bytes To be reversed
Mip map levels 4 bytes The number of mipmaps stored for this texture
Mipmap entry x bytes See Mipmap entries

Mipmap entries

Information Size Default value
Width 4 bytes Mipmap's entry width
Height 4 bytes Mipmap's entry height
Compression flag 4 bytes Indicates if the content is compressed or not
Next image size 4 bytes Image block size (uncompressed)
Next image size 4 bytes Image block size (compressed)
Mipmap pixels x bytes Actual bitmap data in the format specified