Doom 3: Patents and the GPL

April 13th, 2009 by Crusader

Doomworld e-mailed id Software’s John Carmack about a potential legal issue with the upcoming release of Doom 3’s source code under the GPL:

I believe you’ve said publicly that you are planning a GPL release of the Doom 3 source code, but I remember around the time the game was launched you had Creative holding a patent on the shadows algorithm, and you assuaged them by including support for EAX. Is that still causing problems?


When we release the code (no date set), anyone that uses it would potentially be infringing. There are workarounds at a modest performance cost.

One Response to “Doom 3: Patents and the GPL”

  1. Thunor Says:

    How do you even begin to comment on this ridiculous nonsense. So Creative own an algorithm and they used this to “persuade” id into supporting EAX!

    I’m going to make a prediction about what these patents are going to achieve: Existing powerful companies and their patent grabbing are going to make it impossible for new companies to develop competing products. Dodgy businessmen — you know the ones, they handily make billions on economic downturns and end up buying their competitors for a pound — will own everything, they’ll make garbage and nobody will be able to do anything about it.

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