There was a story making the rounds, based on an golem.de interview with id Software CEO Todd Hollenshead at Leipzig GC, that the longtime Linux-supporting FPS developer would not be porting their next game, Rage.
Fortunately, lead id programmer John Carmack responded to the rumors at Slashdot with some clarification:
There is certainly no plans for a commercially supported linux version of Rage, but there will very likely be a linux executable made available. It isn’t running at the moment, but we have had it compiled in the past. Running on additional platforms usually provides some code quality advantages, and it really only takes one interested programmer to make it happen.
The PC version is still OpenGL, but it is possible that could change before release. The actual API code is not very large, and the vertex / fragment code can be easily translated between cg/hlsl/glsl as necessary. I am going to at least consider OpenGL 3.0 as a target, if Nvidia, ATI, and Intel all have decent support. There really won’t be any performance difference between GL 2.0 / GL 3.0 / D3D, so the api decision will be based on secondary factors, of which inertia is one.
Also, Carmack had stated at QuakeCon that Rage’s engine, id Tech 5, would be open-sourced eventually as their previous technologies have been:
I do take a great deal of personal pride and satisfaction with what I’ve been able to do with getting so much of the stuff out. Sometimes I think about it, and while I know it’s not something I’m generally considered for, I may be one of the most prolific open source authors considering all the code that I’ve written over the last 15 years that I’ve made open source, or have made open source there. I do think it’s very valuable. I’m very happy when I see both user gaming community stuff, or research universities, or people doing simulation tests, or bringing up things. Every new piece of hardware ends up having Doom or Quake titles used as an early form of test application. So I’m very happy to have done that. It’s certainly going to continue. I mean I won’t commit to a date, but the Doom 3 stuff will be open source. We still make those decisions even today when we’re doing the Rage code when we have decisions about “do we want to integrate some other vendor’s solution, some proprietary code into this”. And the answer’s usually no, because eventually id Tech 5 is going to be open source also. This is still the law of the land at id, that the policy is that we’re not going to integrate stuff that’s going to make it impossible for us to do an eventual open source release. We can argue the exact pros and cons from a pure business standpoint on it, and I can at least make some, perhaps somewhat, contrived cases that I think it’s good for the business, but as a personal conviction it’s still pretty important to me and I’m standing by that.