TGA (file format)
Description
The Targa graphics file format is primarily used for the storage of 24- and 32-bit truecolor images.
General File Format Specifications
Type
Raster Image Format
Extension
*.TGA
Compression
None, RLE
Color Depth
1- to 32-bits
Notes
RLE compressed images can be read by Doom 3. Since RLE is a lossless form of compression, it can be used without degrading image quality.
24-bit images cannot make use of an alpha channel. Each channel requires 8 bits. In order to make use of an alpha channel you must save your image in 32-bit.
Photoshop 7 does not save transparency information into an alpha channel when dealing with targa images. You must download the updated Targa export plugin from Adobe . All other versions of Photoshop work correctly.