Nouvea driver = less input latency

duud · 05-26-12, 01:45 PM

Currently I'm using the Nouveau driver for gaming, mainly because of better input latency behavior. Input latency is especially noticeable in fast FPS games like Quakelive.

Are there any setting which influence input latency in NVIDIAs drivers for Linux?
NVIDIAs drivers for Windows seem to have a 'Maximum Pre-Rendered Frames' option for this which is missing in NVIDIAs drivers for Linux.

TPG · 05-26-12, 03:20 PM

This option works only for DirectX games, not for OpenGL.

duud · 05-26-12, 03:45 PM

Quote:

Originally Posted by TPG

This option works only for DirectX games, not for OpenGL.

It seems this options is also available for OpenGL:
http://forums.nvidia.com/index.php?s...ic=214503&st=0

kokoko3k · 05-28-12, 11:29 AM

Maybe you have triplebuffering on?

duud · 05-28-12, 12:19 PM

Quote:

Originally Posted by kokoko3k

Maybe you have triplebuffering on?

sync to vblank is off

brebs · 05-28-12, 05:19 PM

Can also try:

In xorg.conf: (Makes e.g. Raven Shield game, in Wine, less jerky)

Code:

Option "NoFlip" "True"

In ~/.bashrc:

Code:

export __GL_YIELD="NOTHING"

duud · 05-29-12, 11:21 AM

Quote:

Originally Posted by brebs

Can also try:

In xorg.conf: (Makes e.g. Raven Shield game, in Wine, less jerky)

Code:

Option "NoFlip" "True"

In ~/.bashrc:

Code:

export __GL_YIELD="NOTHING"

No, doesn't help.
Actually, the games aren't jerky they run smooth.

kriko · 05-29-12, 11:52 AM

Do you have vsync on?

duud · 05-31-12, 11:01 AM

Quote:

Originally Posted by kriko

Do you have vsync on?

vsync is off, you can't play fast FPS games with it.

After some research I fount that it's possible to adjust the amount of prerendered frames by this setting:

Code:

Option "RegistryDwords" "OGL_MaxFramesAllowed=0x1

I've tried this with 302.07 driver and it reduces the input latency.

Sadly there was no help from NVIDIA on such a simple question.

kriko · 05-31-12, 02:27 PM

How you cannot? Vsync locks them to tear-free 60fps

duud · 06-01-12, 08:12 AM

Quote:

Originally Posted by kriko

How you cannot? Vsync locks them to tear-free 60fps

That's right, the tearing disappears but Quakelive seems less responsive to me with vsync on.

RealNC · 06-01-12, 01:12 PM

With VSync you almost always also need triple buffering:

Option "TripleBuffer" "true"

Doesn't always help, but many times, it does :-)

But the best way to eliminate input lag is to enable the frame limiter. The Windows version of the driver does have a frame limiter now. I don't know if the Linux version can also be tweaked that way.

05-26-12, 01:45 PM	#1
duud Registered User Join Date: May 2012 Posts: 7	Nouvea driver = less input latency Currently I'm using the Nouveau driver for gaming, mainly because of better input latency behavior. Input latency is especially noticeable in fast FPS games like Quakelive. Are there any setting which influence input latency in NVIDIAs drivers for Linux? NVIDIAs drivers for Windows seem to have a 'Maximum Pre-Rendered Frames' option for this which is missing in NVIDIAs drivers for Linux.

05-26-12, 03:20 PM	#2
TPG Unregistered User Join Date: Apr 2006 Location: Poland, Warsaw Posts: 203	Re: Nouvea driver = less input latency This option works only for DirectX games, not for OpenGL. __________________ mandriva > all kthnxbai

05-28-12, 11:29 AM	#4
kokoko3k Registered User Join Date: Jan 2007 Posts: 119	Re: Nouvea driver = less input latency Maybe you have triplebuffering on?

05-28-12, 05:19 PM	#6
brebs Registered User Join Date: Jul 2007 Posts: 38	Re: Nouvea driver = less input latency Can also try: In xorg.conf: (Makes e.g. Raven Shield game, in Wine, less jerky) Code: Option "NoFlip" "True" In ~/.bashrc: Code: export __GL_YIELD="NOTHING"

05-29-12, 11:52 AM	#8
kriko openSuSE11 Join Date: Aug 2005 Location: Europe, Slovenia, Koper Posts: 515	Re: Nouvea driver = less input latency Do you have vsync on?

05-31-12, 02:27 PM	#10
kriko openSuSE11 Join Date: Aug 2005 Location: Europe, Slovenia, Koper Posts: 515	Re: Nouvea driver = less input latency How you cannot? Vsync locks them to tear-free 60fps

06-01-12, 01:12 PM	#12
RealNC Registered User Join Date: Feb 2012 Posts: 32	Re: Nouvea driver = less input latency With VSync you almost always also need triple buffering: Option "TripleBuffer" "true" Doesn't always help, but many times, it does :-) But the best way to eliminate input lag is to enable the frame limiter. The Windows version of the driver does have a frame limiter now. I don't know if the Linux version can also be tweaked that way.

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