Doom 3 open-sourcing held up while Carmack writes new code
Before it could release an open-source version of the Doom 3 engine code to all, id Software had to run it by the lawyers. But, their fierce eyes have spotted a slight problem. Chief id technomancer John Carmack is now writing new code to dodge legal issues surrounding the rendering technique, "Carmack's Reverse," which gave Doom 3 its lovely shadows.
"Lawyers are still skittish about the patent issue around 'Carmack's Reverse,' so I am going to write some new code for the Doom 3 release," he explained on Twitter yesterday.
Carmack has been saying for a while, most recently at at QuakeCon, that id would open-source the engine following the release of Rage, and pending legal approval.