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

Newegg Daily Deals

Reply
 
Thread Tools
Old 08-08-04, 10:11 PM   #1
FreeCatalonia
Registered User
 
Join Date: Jul 2004
Posts: 19
Default Can you have software emulation of more advanced cards?

I have a geforce 4 mx, and I'd like to experiment with vertex and pixel shaders that are far too advanced for my card. Is it possible to have software emulation of games, demos, etc, even if it's very slow? You know, just to experiment and have a look.
FreeCatalonia is offline   Reply With Quote
Old 08-09-04, 03:46 AM   #2
Thunderbird
 
Join Date: Jul 2002
Location: Netherlands, Europe
Posts: 2,105
Default Re: Can you have software emulation of more advanced cards?

Yes you can emulate upto geforceFX cards. Use export __GL_NV30_EMULATE=1 (or NV25 for geforce4) but note that it is VERY, VERY slow.
Thunderbird is offline   Reply With Quote
Old 08-09-04, 06:28 AM   #3
FreeCatalonia
Registered User
 
Join Date: Jul 2004
Posts: 19
Default Re: Can you have software emulation of more advanced cards?

With this option (export __GL_NV30_EMULATE=1) I still get an error when quering for the GL_ARB_fragment_shader extension.

Is this thing documented anywhere in the nvidia drivers package or anywhere?

Last edited by FreeCatalonia; 08-09-04 at 06:40 AM.
FreeCatalonia is offline   Reply With Quote
Old 08-09-04, 06:49 AM   #4
Thunderbird
 
Join Date: Jul 2002
Location: Netherlands, Europe
Posts: 2,105
Default Re: Can you have software emulation of more advanced cards?

Not sure if it is documented. First make sure that the option is working using glxgears. The list of extensions it will show is a lot bigger then further the device string will become something like "BoomBoom emulated by: Geforce4MX".
Thunderbird is offline   Reply With Quote
Old 08-09-04, 08:22 AM   #5
nutball
International God of Sex
 
Join Date: Jul 2002
Location: en.gb.uk
Posts: 655
Default Re: Can you have software emulation of more advanced cards?

You need to turn on emulation in the X server as well as the client I think. I've got

Option NvEmulate "30"

in the Device section of XF86Config.
__________________
Got nuts?
nutball is offline   Reply With Quote
Old 08-09-04, 08:52 AM   #6
Thunderbird
 
Join Date: Jul 2002
Location: Netherlands, Europe
Posts: 2,105
Default Re: Can you have software emulation of more advanced cards?

You don't need both options. The advantage of the environment variable is that you can easily disable it, for the XF86Config option it is for your whole X session and that's something you really don't want.
Thunderbird is offline   Reply With Quote
Old 08-09-04, 06:44 PM   #7
FreeCatalonia
Registered User
 
Join Date: Jul 2004
Posts: 19
Default Re: Can you have software emulation of more advanced cards?

I finally was able to get the software emulation to work, so thanks to everyone than replied.

The problem is that only the XF86Config-4 config file option works, whereas the export doesn't. And it would be much easier to work that way, instead of having to modify and restart X every time I have to change options.

By the way, the glxgears test didn't turn to be a good way of validating whether you're on emulation or not. I get about the same fps with or without, so I have to use the glxinfo command or an advaced vertex or shader program to know what I'm running there.
FreeCatalonia is offline   Reply With Quote
Old 08-09-04, 08:01 PM   #8
kmare
Registered User
 
Join Date: Jul 2003
Location: greece
Posts: 180
Send a message via ICQ to kmare
Default Re: Can you have software emulation of more advanced cards?

of course glxgears will return the same results... it doesn't use any advance extention like pixel/vertex shaders or something... only the extentions not supported by your card are emulated...
btw: good to know that it actually works I didn't know that...
kmare 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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Now Available: Knights Corner Open Source Software Stack News Archived News Items 0 06-05-12 08:00 PM
ArcSoft Total Media Theatre 5 Software Blu-ray 3D Player Promo News Archived News Items 0 06-01-12 05:30 AM
Xoreax Software Finds Diamonds in the Cloud News Archived News Items 0 05-25-12 12:20 PM
Slidecast: Allinea Software ' Meeting the Quest to Run Applications Faster News Archived News Items 0 05-21-12 06:30 AM
What Has Happened with Roxio's Cineplayer BD With 3D Software News Archived News Items 0 05-13-12 05:20 PM

All times are GMT -5. The time now is 03:11 PM.


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