Linked by fran on Wed 26th Jan 2011 21:37 UTC
AMD "AMD has announced its support of Open GL 4.1 on Microsoft and Linux platforms in its latest driver release for a number of its graphics cards. The driver release, available on the AMD website for the ATI FirePro, ATI FireGl and AMD Radeon cards, will support OpenGL 4.1 for Microsoft's Windows 7, Vista, XP, as well as Linux."
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RE[2]: How will Linux be supported?
by lemur2 on Wed 26th Jan 2011 23:35 UTC in reply to "RE: How will Linux be supported?"
lemur2
Member since:
2007-02-17

Documentation was released ages ago, and they've got a couple of developers working on the open source driver. This one is the proprietary blob, though. The one you want to use if you need serious OpenGL performance.


By "ages ago", I suppose you mean May 2009, October 2009 and June 2010 for the more recent chipsets:
http://www.x.org/docs/AMD/

Indeed, the open source drivers for AMD/ATI chipsets are not written by AMD/ATI, they are written by Xorg, although ATI/AMD employees do make significant contributions.

The open source drivers are still trying to achieve a feature-complete status, and have largely not yet been optimised. The very first steps towards some optimisations are just beginning to arrive in the very latest beta drivers which work only with the as-yet-unreleased Linux kernel version 2.6.38.

http://www.phoronix.com/scan.php?page=article&item=amd_r500_expande...

These first optimisations show significant promise, where the open source driver has in some cases now passed the fglrx closed source driver performance for some older chipsets (those chipsets for which the documentation has been available for a longer time).

Edited 2011-01-26 23:39 UTC

Reply Parent Score: 5

WereCatf Member since:
2006-02-15

in some cases

In one case: world of padman. Not in plural. And that is a really poor case, too. Geesh that thing is hideous.

Reply Parent Score: 2

lemur2 Member since:
2007-02-17

in some cases In one case: world of padman. Not in plural. And that is a really poor case, too. Geesh that thing is hideous.


Well, the optimisations have only just begun.

Here is a new one coming up for glx, which sits above the drivers in the Xorg stack, and therefore will improve all Xorg drivers, not just ATI/AMD:

http://www.phoronix.com/scan.php?page=news_item&px=OTA1MQ

You start adding 20% optimisation here for page-flipping support in the linux 2.6.38 kernel, and then another 20% there in glx for "decoding the opcode into the appropriate index into the dispatch tables" (whatever that means), and another 30% improvement by using the Gallium3D drivers versus the classic Mesa drivers, and pretty soon you have overtaken fglrx without really trying.

Edited 2011-01-27 00:52 UTC

Reply Parent Score: 4

No it isnt Member since:
2005-11-14

Well, running Microsoft's psychedelic browser benchmark in Firefox 4 beta with the open source driver (Gallium3D) gets something like 10x the performance of fglrx (1700 or so rpm on my computer). So there, now it's plural.

http://ie.microsoft.com/testdrive/Performance/PsychedelicBrowsing/D...

Reply Parent Score: 3

renox Member since:
2005-07-06

"Documentation was released ages ago, and they've got a couple of developers working on the open source driver. This one is the proprietary blob, though. The one you want to use if you need serious OpenGL performance.
By "ages ago", I suppose you mean May 2009, October 2009 and June 2010 for the more recent chipsets: http://www.x.org/docs/AMD/ "

Well of course the documentation for the more recent chipsets is newer, but you selected the dates: I see also 2007 and 2008 dates in the directory you linked..

Reply Parent Score: 2