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-   -   Does 8800 series suffer from slow subpixel font rendering (http://www.nvnews.net/vbulletin/showthread.php?t=88801)

_john_i_ 03-27-07 11:43 AM

Does 8800 series suffer from slow subpixel font rendering
 
I'm about to do a system upgrade, and I am trying to make a decision on what video card to get.

I've had a 6600gt for several years and have suffered through the slow rendering of subpixel-rendered fonts bug.

I'm considering an 8800 GTS, but I need to know if I will still have the slow subpixel rendering bug before I purchase it.

Can anyone with an 8800 who is familiar with this problem let me know if the problem persists on the newer hardware?

I would rather stick with Nvidia if at all possible, but this bug is pretty much a deal-breaker for me as I use desktop much more than games these days.

If this is still happening, then I will be going with an ATI offering instead.

Thanks,

John

_john_i_ 03-30-07 12:37 PM

Re: Does 8800 series suffer from slow subpixel font rendering
 
Are there any Nvidia people who can answer this? I'm hoping to make a purchase decision next week.

I just need to know if subpixel font rendering is unbearably slow like on the 6600gt.

I suppose I can buy it at a place with a decent return policy so if it doesn't work out I can return it, but I would prefer not to go through that hassle if I can avoid it.

Aaron? Netllama?

uOpt 03-30-07 01:28 PM

Re: Does 8800 series suffer from slow subpixel font rendering
 
I think you need to post a better description of the problem you are seeing, such as a link to a bashing article.

If that article contains a benchmark then somebody could run it for you.

_john_i_ 03-30-07 01:33 PM

Re: Does 8800 series suffer from slow subpixel font rendering
 
Quote:

Originally Posted by uOpt
I think you need to post a better description of the problem you are seeing, such as a link to a bashing article.

If that article contains a benchmark then somebody could run it for you.

In KDE enable subpixel AA font rendering. If scrolling text in konsole or konqueror brings your system to it's knees, you are suffering from the problem. Old geforce 2 and geforce 3 cards put a 6600gt to shame in this arena.

Here's a link to one of the many long threads about it here:
http://www.nvnews.net/vbulletin/showthread.php?t=84916

and Another
http://www.nvnews.net/vbulletin/showthread.php?t=65857

Robster 03-30-07 04:02 PM

Re: Does 8800 series suffer from slow subpixel font rendering
 
OK, I'll test stuff for you if you like.

I had a quick read through those threads, and tried some KDE apps. Scrolling was always smooth, and CPU time was always low (I managed to get User CPU load up to nearly 3% by wiggling a Konqueror window up and down like a madman :D)

My system:
Athlon X2 4400+
nForce 4 SLI motherboard
2GB DDR-400 RAM
640MB 8800GTS
Gentoo Linux, KDE 3.5.6, kernel 2.6.20-g4, xorg.x11 7.2
nVidia driver 1.0.9755

Let me know what you want to see.

In case it's relevant, I use quite a bit of 2D CAD software for electronics, both under Linux and under Windows in vmware, and the performance is never an issue... then again, I don't really have high expectations, as the computer always seems to be faster than my thought processes ;)

_john_i_ 03-30-07 04:09 PM

Re: Does 8800 series suffer from slow subpixel font rendering
 
Quote:

Originally Posted by Robster
OK, I'll test stuff for you if you like.

I had a quick read through those threads, and tried some KDE apps. Scrolling was always smooth, and CPU time was always low (I managed to get User CPU load up to nearly 3% by wiggling a Konqueror window up and down like a madman :D)

Thank you very much for trying this. Can you confirm that you turned on subpixel rendering in the kde control panel?

Control Center->Appearances & Themes->Fonts
"Use anti-aliasing for fonts" is checked, and clicking on the configure button next to antialiasing for fonts, you have "Use sub-pixel hinting:" checked, and Hinting style is "full".

If it wasn't set that way, could you set it that way, and log out/back into KDE to see if it is still smooth?

This is hopefully good new! Thanks again.

John

Robster 03-30-07 04:59 PM

Re: Does 8800 series suffer from slow subpixel font rendering
 
Oh ye of little faith! :)

Here's the evidence.

I didn't need to log out and in again, as this is how I have had it set since longer than I can remember. As I said, I don't recall any performance problems, nor do I recall any with the 7800GT I was using before. And before that, I can neither remember what card I was using, nor whether KDE offered antialiased font rendering!

_john_i_ 03-30-07 06:23 PM

Re: Does 8800 series suffer from slow subpixel font rendering
 
Quote:

Originally Posted by Robster
Oh ye of little faith! :)

Here's the evidence.

I didn't need to log out and in again, as this is how I have had it set since longer than I can remember. As I said, I don't recall any performance problems, nor do I recall any with the 7800GT I was using before. And before that, I can neither remember what card I was using, nor whether KDE offered antialiased font rendering!


Robster,

Thank you so very much for testing this out for me!

You've saved me from an ATI fate ;)

Looks like I will be sticking with Nvidia after all. (Sighing with relief)

John

AaronP 03-30-07 07:56 PM

Re: Does 8800 series suffer from slow subpixel font rendering
 
Subpixel hinted AA text is not accelerated with current drivers, but improvements are planned for a future driver release.

_john_i_ 04-01-07 10:33 PM

Re: Does 8800 series suffer from slow subpixel font rendering
 
Quote:

Originally Posted by AaronP
Subpixel hinted AA text is not accelerated with current drivers, but improvements are planned for a future driver release.

Thanks for the reply, Aaron.

Any idea why certain cards have more of a problem with this than others?

Robster's 8800GTS doesn't have any noticable performance problems, and neither did my old Geforce 3. But my 6600gt AGP has absolutely terrible performance trying to render subpixel.

John

Linuxhippy 04-06-07 01:53 AM

Re: Does 8800 series suffer from slow subpixel font rendering
 
Quote:

Originally Posted by AaronP
Subpixel hinted AA text is not accelerated with current drivers, but improvements are planned for a future driver release.

Are XRender-accaleration improvements also in planning?

Thank you in advance, lg Clemens


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