[zh] 正如id Software的传统和承诺，Doom 3的源代码以GPL3的协议发布了。其中不包含游戏数据，而且因为法律原因，原引擎中的阴影渲染技巧“卡马克反转”也已经被替换掉。 你可以从https://github.com/TTimo/doom3.gpl下载到。 [/zh] [en] As promised and as per tradition, id Software has released the Doom 3 source code under GPL3. No game data is contained, and the original engine's shadow rendering trick known as Carmack's reverse has been replaced for legal reasons. You can find it here: https://github.com/TTimo/doom3.gpl [/en]