0 A.D. uses the standard ​S3TC texture compression format, which saves at least 75% of video memory usage, improving the game's performance. Unfortunately S3TC is ​not supported by default in Mesa (which provides OpenGL support on Linux) due to uncertainties over patents.

The game will automatically enable the force_s3tc_enable DRI configuration option, which helps when using drivers that support texture decompression but not run-time compression. (This can be disabled via the game's configuration file: see force_s3tc_enable in data/config/default.cfg in the install directory.)

If this does not work, and the game displays a warning message, you may need to install the libtxc_dxtn library:

• Manually install ​libtxc_dxtn-1.0.1.tar.gz (simply extract and run sudo make install)
• ​Ubuntu package: also available here updated mesa drivers with fixes and optimization for 0 A.D.
• ​Debian Multimedia repository (​packages)
• ​Gentoo package
• ​Arch package