Quote Although, arb_shader_image_load_store-atomicity will most likely hang your box, I think it's now quite reasonable to enable GL 4.3 on Maxwell/Pascal GPUs. I suspect that test to be wrong because it doesn't even work on the NVIDIA blob.



I have tested a bunch of benchmarks (UE4 demos) and real games like Shadow of Mordor and they all work fine.

Quote This patch will increase performance on Maxwell GPUs by, at least, x1.5 up to x3.5 for some benchmarks.

Article taken from GamingOnLinux.com.

Note: Article updated to clarify what I meant by "newer cards".Samuel Pitoiset (Valve developer) just put some fresh work into Mesa-git that enables OpenGL 4.3 with nouveau (NVIDIA) for Maxwell and above.From the git commit Even though this won't be useful for people like me on newer cards (a lot of Maxwell and Pascal don't have proper support yet in Mesa, as other features missing, like for my 980ti it has no re-clocking), it's good to see older generations of NVIDIA cards get better OpenGL support on the open source driver.This is great, as it's another bit of progression that should make it in time for the next stable version of Mesa. So users of NVIDIA graphics cards that aren't using the proprietary driver should be able to play titles like the mentioned Shadow of Mordor in the next Mesa version. That's if your card has proper support in nouveau of course.Samuel also managed to squeeze out some extra performance, as noted in this commit Awesome work as always.Mesa 17, the next stable version is due in February as detailed in the release plan Going by that plan, it seems that sadly, the on-disk shader cache will not make it in time for Mesa 17.