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Unless we are talking r300g, I think that the othere open driveres have way to much they already need to fix, implement and optimize that it would make much sence to start looking at optimizing for specefic games.
On the other hand, the title is a bit misleading here IMHO.
If they want to go get the intel GPUs into play - and Valve surely does - then they
have to deal with an open-source driver. There is no other driver.
So let's hope we hear some news soon from Valve what ideas they have
concerning the F/OSS radeon and nouveau drivers. TBH, I'm a bit sceptical here.
There are far superior blob drivers by means of performance and
significantly optimising the open drivers doesn't seem to be low-hanging grapes.
To me it would be an unbelievable (and appreciated) move if they put huge efforts
into the open drivers, when there's already something working where they can easily
communicate (I guess so) with developers from NVidia and AMD. Just from a companies POV, ofc...
Then again, we still don't know to full extent what Valve is really up to.
Interesting to see that linux driver devs do whatever possible to run the source engine faster but ignore bugs you could find with much simpler tests (based on osg). i think nouveau can pass the test 4 already with some cards, other oss drivers do not. amd fixed at least the test 1 with hd 5670 with 12-4+. the bug was introduced with 11-12. of course the full source is available for osg and the little test tool. the source could alone does not lead to an immediate fix when nobody cares.
Well, who knows for Nouveau. At the moment, the real problem is power management and we are working on it. The maintainer will help me on this whenever he is done with the infrastructure work.
Anyway, what truly is needed is early access to the games in the future for all gallium devs.
Kudos to Valve.
Hmm, playing the naive guy here; have you thought about approaching Valve+Nvidia after the Steam on Linux "thing" is official now?
Maybe there is a slight chance Valve can convince NVidia to provides som docs to you under at least NDA now.
I doubt this strange company will ever freely distribute it...