TINTTAB



TINTTAB is a WAD lump in Raven Software's Heretic and Hexen for supporting translucency in objects (contrary to Partial_invisibility used in Doom and Doom II).

It is a precalculated lookup table similar to COLORMAP, but maps each color against each other color, rather than against specific levels. It is 65535 bytes (256×256) and determines what each color changes to when shown behind a translucent pixel of another color. Due to the limitation of 256 colors shown on screen at once, it is only an approximation in most cases.