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

Newegg Daily Deals

Thread Tools
Old 05-06-08, 03:53 AM   #1
Registered User
Join Date: May 2008
Posts: 1
Default Video display in multiple screens with SDL


I've recently seen this post by r.c.:


kokoko3k, thanks. I'm not using mplayer, but rather our own code. I just mentioned mplayer as an example of a similar program that might be affected in the same ways (if multiple instances at once are run across multiple screens).

I am using YUV overlays, however we have multiple displays. My understanding is that in the second display driven off of the nvidia card, you fake YUV overlays with blits. The rendering is definitely sync'd when XVideoTextureSyncToVBlank is set to 1, and is not when it is set to 0, and the performance with multiple windows being rendered is most definitely as I described. I'm not positive that SDL is actually using hardware surfaces in all cases (I just need to add some code to check), and like I mentioned we are using multiple displays, so some of this could be related to the way display 2 is handled by the driver (not sure if it happens in 2 X screen configs, but it is definitely happening in twinview configs). However, performance is great with the XVideoTextureSyncToVBlank turned off, so thought I'd bring it up here.

Thanks for the tip Phalin, will look into it.


r.c. mentions that he is using YUV overlays in SDL whith multiple displays, just using multiple instances at once running across multiple screens. I need to do this myself (I have a nvidia quadro), but i cuoldn't find a way to tell SDL in which display it must draw. Is there any SDL function that solves this? Any other approach I can use?

Thank you very much.
terleira is offline   Reply With Quote

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

Similar Threads
Thread Thread Starter Forum Replies Last Post
IOGEAR 3D Complete+ 4-Port HDMI Switcher with 2D/3D Video Processor News Archived News Items 0 06-28-12 05:40 PM
302.07 (beta) for Linux x86/x86_64 released AaronP NVIDIA Linux 0 05-02-12 09:55 AM
Glx mrbig1344 NVIDIA Linux 7 09-30-02 06:45 AM
Official Detonator 40.xx Feedback Thread pelly NVIDIA Windows Graphics Drivers 299 09-22-02 06:54 AM
Best video card for running dual displays? nutsnbolts NVIDIA GeForce 7, 8, And 9 Series 10 09-03-02 02:02 PM

All times are GMT -5. The time now is 04:31 PM.

Powered by vBulletin® Version 3.7.1
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Copyright 1998 - 2014, nV News.