Go Back   nV News Forums > Linux Support Forums > NVIDIA Linux

Newegg Daily Deals

Reply
 
Thread Tools
Old 05-10-10, 01:18 AM   #1
BitJam
Registered User
 
Join Date: Apr 2006
Posts: 47
Default Composite, VSync, VDPAU, and Twinview status?

I've Googled around and I've read the VDPAU and Composite sections of the recent NVidia README but I haven't been able to find a summary of the status of Composite versus VSync. I know that for a long time I had to choose either Composite or VSync but I seem to remember reading somewhere that eventually we will be able to have Composite plus VSync. I'm not complaining, I just want to know the status so I can plan accordingly.

1) Is it possible to have Composite + VSync + VDPAU + Twinview? If so, what drivers and what chips are required?

2) If this combination is not possible now, are there plans to make it possible in the future?

Thanks.
BitJam is offline   Reply With Quote
Old 05-10-10, 10:28 AM   #2
Stephen Warren
Moderator
 
Stephen Warren's Avatar
 
Join Date: Aug 2005
Posts: 1,327
Default Re: Composite, VSync, VDPAU, and Twinview status?

BitJam,

We hope to eventually allow use of the overlay-based presentation queue (which will completely eliminate tearing, i.e. will have perfect sync-to-vblank) with the X composite extension enabled, but without a compositing manager running. This is within NVIDIA's direct control. This would allow tear-free VDPAU simply by disabling/enabling compiz at run-time, rather than having to edit ones xorg.conf and restart X. This feature is rising in our development priorities, but I certainly can't conjecture if/when this will be implemented at present.

Many of the issues that occur with a compositing manager running are outside NVIDIA's direct control, and in some cases, there is no technical possibility of a solution with the current X architecture.
Stephen Warren is offline   Reply With Quote
Old 05-14-10, 05:14 AM   #3
rossmoore
Registered User
 
Join Date: May 2008
Location: London
Posts: 11
Default Re: Composite, VSync, VDPAU, and Twinview status?

Hi Steven,

I'dlike to add my voice to the requirement to have VBlank working with composie enabled. I can cope with temporarily disabling compiz while I watch a video (this is easily automated), but not with having to restart X (which is a pain in the neck).

I bought Nvidia hardware for the VDPAU support (which is fab btw), but was sorely disappointed when I realised it couldn't do composite at the same time.

Anything I can do to help raise its priority / offer testing services etc?

Thanks,
Ross
rossmoore is offline   Reply With Quote
Reply


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 05:42 AM.


Powered by vBulletin® Version 3.7.1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright 1998 - 2014, nV News.