TGA

Truevision Graphics Adapter (TGA), commonly referred to as "targa" (Truevision Advanced Raster Graphics Adapter), is a non-proprietary image format from Truevision that is favoured by Valve. .tga is also the file extension of that format. It is the base format for Valve Texture Files (.vtf), and used to store images used by the Steam client.

TGA files can be saved with a fourth channel, called the Alpha channel, which usually defines the transparency. (The three basic channels define red, blue, and green content of the image.) However, VMF shaders can use the alpha channel for other information.

See also

• The Wikipedia entry
• TGA Format Specification
• Irfanview, a popular TGA viewer