Full Trilinear filtering enabled with registry keys?

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rbV5

rbV5

Lifer
Dec 10, 2000
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ComputerBase article ( translated English)

From the discussion at Rage3D Link

To enable full trilinear filtering on RV3x0 and R420 (for those who can't make any sense out of the CPU-translations):

1st step (find the correct registry path):

* open the registry editor
* search for "AntiAliasSamples"
* to make sure that you found the correct "AntiAliasSamples", change the AA setting in your control panel and press F5 in the registry editor. If the value of "AntiAliasSamples" changed, you found the correct path.

2nd step (force fulltrilinear):

* using the path found above enter all of the following three keys for X800 cards or only the two "RV350*" keys for RV3x0 cards:

String "RV350TRPER" 1
String "RV350ANTHRESH" 1
String "R420AnisoLOD" 2

That's all. Don't forget that one most has probably to reinitialize the D3D settings or reboot for this changes to take effect.

EDIT: This is for beta catalyst drivers only.


If its true, seems like a option in the drivers should be forthcoming one way or another.
 
Z

ZombieJesus

Member
Feb 12, 2004
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Why bother when the adaptive trilinear filtering produces better performance with no iq impact. Unless you play games with a giant 6x magnifying glass infront of your monitor.
 
G

GeneralGrievous

Banned
Apr 14, 2004
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Because you might as well. Even if in some carefully selected situation there is the tiniest drop of IQ, if you can enable it with no loss in FPS (which you probably can, today at least), why not do so?

But kudos to ATI for creating a viable optimization, as opposed to Nvidias trash bilinear, for 1-2 years in the future when these cards aren't as fast as today.
 
P

PrayForDeath

Diamond Member
Apr 12, 2004
3,478
1
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Hell, as I said before, I am not praying for death, I am asking you to Pray For Death :evil: :evil::p



p.s: wish there was an avatar that expresses my name, the devil's one looks stupid (no offense for guys who have it as their avatar)
 
A

Acanthus

Lifer
Aug 28, 2001
19,915
2
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ostif.org
Originally posted by: ZombieJesus
Why bother when the adaptive trilinear filtering produces better performance with no iq impact. Unless you play games with a giant 6x magnifying glass infront of your monitor.
Click to expand...

and the same argument NV fans have been arguing for over a year flies in :p
 
P

PrayForDeath

Diamond Member
Apr 12, 2004
3,478
1
76
Originally posted by: SickBeast
Originally posted by: PrayForDeath
I am not praying for death
Click to expand...
Yes you are, stop denying it. :p
Click to expand...

Well, you got me, I am praying for death, but hey! So what?? I got sick of my life and I wanna rest in peace :p :p :p

edit (because I don't wanna get banned ;) ):As for the subject, yes, there's a little IQ loss with these *optimisations* but it's not noticable during gameplay, I guess ATI will add a feature in their next drivers that disables this optimisation.


p.s: we're really getting off-topic in here, please don't kick us out, mods :eek:
 
Keysplayr

Keysplayr

Elite Member
Jan 16, 2003
21,219
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Originally posted by: GeneralGrievous
and the same argument NV fans have been arguing for over a year flies in
Click to expand...
But this time its actually valid.
Click to expand...

Says you.. Not from what I have seen. ATI is cutting corners just like NV did with the NV3x series and its most clearly evident especially in the "mouse over" type screen shots.
 
Z

ZobarStyl

Senior member
Mar 3, 2004
657
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Man I hate to flog a dead horse yet again but if you think that you can enable the trilinear with no loss in FPS grievous you got another thing coming...apparently its a ~20% loss in UT2K3, but that's supposed to be the worst situation, so you are probably looking at a 10% on average loss.
 
BFG10K

BFG10K

Lifer
Aug 14, 2000
22,709
3,003
126
Frankly I'm not at all surprised there's a way to control it. After all the driver is the one who decides when to use it.

Looks like all the doom and gloomers will have to quieten down though I am interested in seeing what (if any) performance hit comes from disabling it.
 
N

nemesismk2

Diamond Member
Sep 29, 2001
4,810
5
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www.ultimatehardware.net
I bet ATI will hide the registry keys better in the official drivers so you have no chance of disabling it! Maybe now we will see the "REAL" performance of the latest video cards and my odds are on the 6800 to wipe the floor with the x800! :)
 
Shamrock

Shamrock

Golden Member
Oct 11, 1999
1,441
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read my post with the link in it? you get your performance hit. But the graph only shows UT2k3
 
rbV5

rbV5

Lifer
Dec 10, 2000
12,632
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Originally posted by: Shamrock
read my post with the link in it? you get your performance hit. But the graph only shows UT2k3
Click to expand...

The german and english links are in the original post btw.

They're conclusion "Depending on how close one operates at the CPU limit, it can also quite be that one obtains by the optimizations no Frameraten profit and as it so far looks, in higher the in principle speed ?of the X800 XT PE? opposite the GeForce 6800 Ultra will change not much - only the distances shrink together."

Seems to say that that it narrows the margin over the 6800 in that particular benchmark, but it looks to me like a 12% to 17% hit over the quality setting in the control panel at those settings. Thats pretty substantial, and we'll have to see what more extensive benchmarking have to say. I'm guessing most of the time, the performance penalty won't be worth the trade-off for what little improvement you'll gain in Image Quality (if any).

Perhaps ATI can optimize the adaptive trilinear so that in the cases where there is a noticable drop in image quality, it can bew minimized. If this does indeed disable the optimized trilinear, I would expect to see it in the hacked driver sets at least.
 
G

GeneralGrievous

Banned
Apr 14, 2004
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Man I hate to flog a dead horse yet again but if you think that you can enable the trilinear with no loss in FPS grievous you got another thing coming...apparently its a ~20% loss in UT2K3, but that's supposed to be the worst situation, so you are probably looking at a 10% on average loss.
Click to expand...
I only have a barton@2.2 ghz so CPU limitation is a factor.

Says you.. Not from what I have seen. ATI is cutting corners just like NV did with the NV3x series and its most clearly evident especially in the "mouse over" type screen shots.
Click to expand...
ATI's optimization is CLEARLY better than Nvidia's. You can see that even without a mouseover or magnification.
 
N

nRollo

Banned
Jan 11, 2002
10,460
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Originally posted by: GeneralGrievous
Man I hate to flog a dead horse yet again but if you think that you can enable the trilinear with no loss in FPS grievous you got another thing coming...apparently its a ~20% loss in UT2K3, but that's supposed to be the worst situation, so you are probably looking at a 10% on average loss.
Click to expand...
I only have a barton@2.2 ghz so CPU limitation is a factor.

Says you.. Not from what I have seen. ATI is cutting corners just like NV did with the NV3x series and its most clearly evident especially in the "mouse over" type screen shots.
Click to expand...
ATI's optimization is CLEARLY better than Nvidia's. You can see that even without a mouseover or magnification.
Click to expand...

Who cares if ATIs optimization is better? It's still clearly flawed, and AFAIK, with nVidia you don't have to hack the registry to turn off their optimization?
 
J

jiffylube1024

Diamond Member
Feb 17, 2002
7,430
0
71
At this point, I really have a 'who f*cking cares' attitude about most of these optimizations.

Who f*cking cares? Your ATI card has slightly worse AF? Who cares! Your NV card is slightly jaggier on AA? So what!
 
rbV5

rbV5

Lifer
Dec 10, 2000
12,632
0
0
It's still clearly flawed, and AFAIK, with nVidia you don't have to hack the registry to turn off their optimization?
Click to expand...

Flawed? 12-17% gain in UT2003 with little or no affect on IQ is pretty good (if thats what they are in fact showing) IMO. I wish I had the option to enable the adaptive trilinear with my 9700 card. NV's drivers didn't always allow the user to disable the optimizations, ATI's likely won't down the road either.
 
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