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DOOM 3 Source Patent Issue

The Doomworld Forums have an interesting follow-up to the fact that DOOM 3 made use of a "zfail" method of rendering shadows that is patented by Creative Labs (thanks Ant). Recalling this, they asked id's John Carmack how this might impact plans to release the DOOM 3 source code under the GPL at a future date. Sure enough, this situation could potentially result in patent infringement:

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

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8. Re: DOOM 3 Source Patent Issue Apr 8, 2009, 02:14 beigemore
 
I believe id included eax support so they wouldn't have to pay creative for a license to use the zfail method.

It's really crappy that creative got a patent on that when they aren't even in the 3d graphic rendering biz.
 
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    Date Subject Author
  1. Apr 8, 01:14 Re: DOOM 3 Source Patent Issue SilentSin
  2. Apr 8, 01:39 Re: DOOM 3 Source Patent Issue HellSlayer
  3. Apr 8, 01:42  Re: DOOM 3 Source Patent Issue Kxmode
  4. Apr 8, 01:48 Re: DOOM 3 Source Patent Issue Creston
  5. Apr 8, 01:51  Re: DOOM 3 Source Patent Issue Kxmode
  7. Apr 8, 02:12   Re: DOOM 3 Source Patent Issue Scottso
  20. Apr 8, 09:43   Re: DOOM 3 Source Patent Issue Ant
  6. Apr 8, 02:07 Re: DOOM 3 Source Patent Issue Bludd
>> 8. Apr 8, 02:14  Re: DOOM 3 Source Patent Issue beigemore
  10. Apr 8, 02:34   Re: DOOM 3 Source Patent Issue Bludd
  11. Apr 8, 03:04    Re: DOOM 3 Source Patent Issue Jackplug
  9. Apr 8, 02:32  Re: DOOM 3 Source Patent Issue GT
  23. Apr 8, 10:16  Re: DOOM 3 Source Patent Issue theAntiELVIS
  24. Apr 8, 10:21   Re: DOOM 3 Source Patent Issue Fartacus
  12. Apr 8, 03:53 Re: DOOM 3 Source Patent Issue KilrathiAce
  13. Apr 8, 03:57 Re: DOOM 3 Source Patent Issue [THA] Hamst3r
  14. Apr 8, 04:13  Re: DOOM 3 Source Patent Issue InBlack
  15. Apr 8, 04:20   Re: DOOM 3 Source Patent Issue Bhruic
  16. Apr 8, 05:14    Re: DOOM 3 Source Patent Issue InBlack
  17. Apr 8, 07:03     Re: DOOM 3 Source Patent Issue LittleMe
  27. Apr 8, 12:07      Re: DOOM 3 Source Patent Issue GT
  19. Apr 8, 08:38   Re: DOOM 3 Source Patent Issue kanniballl
  18. Apr 8, 08:03 Re: DOOM 3 Source Patent Issue Veinman
  22. Apr 8, 10:08  Re: DOOM 3 Source Patent Issue theAntiELVIS
  26. Apr 8, 12:04   Re: DOOM 3 Source Patent Issue Veinman
  21. Apr 8, 09:45 Re: DOOM 3 Source Patent Issue wtf_man
  25. Apr 8, 11:56 Re: DOOM 3 Source Patent Issue Exe
  28. Apr 8, 14:20 Re: DOOM 3 Source Patent Issue Jim
  29. Apr 8, 16:25  Re: DOOM 3 Source Patent Issue  dsmart 
  30. Apr 9, 00:11   Re: DOOM 3 Source Patent Issue Razor


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