Anti-aliasing won't work with new Catalyst

weicco · Apr 18, 2005, 10:54 AM

I have 9800 Pro 256mt. I just installed Catalyst 5.4 drivers and noticed that anti-aliasing is not working well in games. Some graphic objects are not anti-aliased while some are. What makes this problem worse is that I have tried to re-install some previous drivers (4.8-4.12) without any effect. It seems that I'm stuck with 5.4 for now.

Can somebody say how can I uninstall 5.4 properly from my machine? I've already tried DriverCleaner but it didn't help.

Any help from you would be greatly appreciated.

Spyre · Apr 18, 2005, 12:36 PM

If you have the latest fraps loaded 2.5.5 then AA wont work so use an older version of fraps til the fraps team fix this bug

Alternately if you have an older ATI tray tools than can also cause problems with enabling AA

weicco · Apr 18, 2005, 01:25 PM

Quote:

Originally Posted by Spyre

If you have the latest fraps loaded 2.5.5 then AA wont work so use an older version of fraps til the fraps team fix this bug

I unloaded Fraps but it didn't help. Thanks anyway.

[hobo]eclipse · Apr 18, 2005, 02:06 PM

remember to use the Driver Cleaner in safe mode or it wont delete all the files correctly, actually it deletes them but windows restores them if u dont do it in safe mode

weicco · Apr 18, 2005, 03:10 PM

Quote:

Originally Posted by [hobo]eclipse

remember to use the Driver Cleaner in safe mode

Yeah, I have run it in safe mode, but it doesn't help. The machine is still locked in 5.4.

weicco · Apr 20, 2005, 06:40 PM

I took some screenshots to demonstrate my problem:

Far Cry with 4xAA, 8xAF:
[color=#bb4400]http://koti.mbnet.fi/hynninen/farcry_4xAA-8xAF.jpg[/color]

FSim 2004 with 4xAA, 8xAF:
[color=#bb4400]http://koti.mbnet.fi/hynninen/fsim2004_4xAA-8xAF.jpg[/color]

The floor in the Far Cry pic is very shivering and it hurts the eyes.

Anyone else have the same problem or is this a normal thing?

wiskerbizkit · Apr 20, 2005, 07:57 PM

I've had that problem for months now and have never found a fix and its damn annoying too

cswiger · Apr 23, 2005, 08:12 PM

That reminds me of the "shimmering fences in HL2", back around the Cat 4.x's from the middle to end of last year. I don't see that kinda thing now with either Cat 4.12 or 5.4 in other games, but I guess I should reinstall Far Cry and retest for real.

Also, it's weird that it would be so noticable with 4xAA enabled: from what I remember, the shimmering looking through fences in HL2 was with AA off; it largely got smoothed away when AA was enabled.

griswoold · Apr 23, 2005, 08:18 PM

It's an alpha test texture. MSAA(Multisampling Anti-alising) won't anti-alias alpha test texutres. You need SSAA(Supersampling Anti-Aliasing) for that.

cswiger · Apr 23, 2005, 09:38 PM

Interesting...I knew the fence was using alpha channel, or at least was aware that that was a likely way to implement it (it's possible to implement fences and grills and latticework using geometry, too, at least simple ones). I think I even know the difference between MSAA and SSAA, but I didn't know that you couldn't use MSAA against textures with alpha. Tradeoffs, tradeoffs...

griswoold · Apr 23, 2005, 10:01 PM

Quote:

Originally Posted by cswiger

that you couldn't use MSAA against textures with alpha. Tradeoffs, tradeoffs...

Not yet anyway. I've heard that ATI at least supports alpha to coverage mask with which you can anti-alias alpha test textures. But it needs specific support from the developer and some back door code because it's not really supported by the API.

So maybe there is a slight chance that in some future games anti-aliasing on alpha test textures may work but i wouldn't count on it.

Apr 18, 2005, 10:54 AM	#1
weicco DriverHeaven Newbie Join Date: Apr 2005 Posts: 4 Rep Power: 0	Anti-aliasing won't work with new Catalyst I have 9800 Pro 256mt. I just installed Catalyst 5.4 drivers and noticed that anti-aliasing is not working well in games. Some graphic objects are not anti-aliased while some are. What makes this problem worse is that I have tried to re-install some previous drivers (4.8-4.12) without any effect. It seems that I'm stuck with 5.4 for now. Can somebody say how can I uninstall 5.4 properly from my machine? I've already tried DriverCleaner but it didn't help. Any help from you would be greatly appreciated.

Apr 18, 2005, 12:36 PM	#2
Spyre DriverHeaven Senior Member Join Date: Mar 2003 Location: England Posts: 240 Rep Power: 62	If you have the latest fraps loaded 2.5.5 then AA wont work so use an older version of fraps til the fraps team fix this bug Alternately if you have an older ATI tray tools than can also cause problems with enabling AA __________________ ATI Beta Tester game.AMD.Moderator

Apr 23, 2005, 08:12 PM	#8
cswiger DriverHeaven Addict Join Date: Nov 2004 Location: NYC Posts: 233 Rep Power: 0	That reminds me of the "shimmering fences in HL2", back around the Cat 4.x's from the middle to end of last year. I don't see that kinda thing now with either Cat 4.12 or 5.4 in other games, but I guess I should reinstall Far Cry and retest for real. Also, it's weird that it would be so noticable with 4xAA enabled: from what I remember, the shimmering looking through fences in HL2 was with AA off; it largely got smoothed away when AA was enabled. __________________ Do you remember Shalebridge Cradle? Beware! The Cradle doesn't forget.... AMD Opteron 185 @ 2.6GHz/200HTT \| 2GB G.Skill DDR3200 @ 2-3-2-5/1T \| 512MB eVGA 8800GT @ 600/1800 \| SB Audigy 2ZS eX, Outlaw 1050 6.1ch amp, Paradigm speakers \| MSI K8N Diamond Plus mainboard \| black Lian-Li USB68 case + Foxconn FX600-GLN 600W PSU \| 2xWDC3200AAKS (RAID1) \| Sony GDM-F500R CRT, BENQ G2400W LCD

Apr 23, 2005, 08:18 PM	#9
griswoold mr. vögi Join Date: Apr 2003 Posts: 161 Rep Power: 0	It's an alpha test texture. MSAA(Multisampling Anti-alising) won't anti-alias alpha test texutres. You need SSAA(Supersampling Anti-Aliasing) for that. __________________ Glad to hear it because somebody has to blow that sucker up!

Apr 23, 2005, 09:38 PM	#10
cswiger DriverHeaven Addict Join Date: Nov 2004 Location: NYC Posts: 233 Rep Power: 0	Interesting...I knew the fence was using alpha channel, or at least was aware that that was a likely way to implement it (it's possible to implement fences and grills and latticework using geometry, too, at least simple ones). I think I even know the difference between MSAA and SSAA, but I didn't know that you couldn't use MSAA against textures with alpha. Tradeoffs, tradeoffs... __________________ Do you remember Shalebridge Cradle? Beware! The Cradle doesn't forget.... AMD Opteron 185 @ 2.6GHz/200HTT \| 2GB G.Skill DDR3200 @ 2-3-2-5/1T \| 512MB eVGA 8800GT @ 600/1800 \| SB Audigy 2ZS eX, Outlaw 1050 6.1ch amp, Paradigm speakers \| MSI K8N Diamond Plus mainboard \| black Lian-Li USB68 case + Foxconn FX600-GLN 600W PSU \| 2xWDC3200AAKS (RAID1) \| Sony GDM-F500R CRT, BENQ G2400W LCD

Apr 18, 2005, 02:06 PM	#4
[hobo]eclipse ...just bummin 'round Join Date: Oct 2004 Posts: 2,907 Rep Power: 112 System Specs	remember to use the Driver Cleaner in safe mode or it wont delete all the files correctly, actually it deletes them but windows restores them if u dont do it in safe mode

Apr 20, 2005, 06:40 PM	Thread Starter #6
weicco DriverHeaven Newbie Join Date: Apr 2005 Posts: 4 Rep Power: 0	I took some screenshots to demonstrate my problem: Far Cry with 4xAA, 8xAF: [color=#bb4400]http://koti.mbnet.fi/hynninen/farcry_4xAA-8xAF.jpg[/color] FSim 2004 with 4xAA, 8xAF: [color=#bb4400]http://koti.mbnet.fi/hynninen/fsim2004_4xAA-8xAF.jpg[/color] The floor in the Far Cry pic is very shivering and it hurts the eyes. Anyone else have the same problem or is this a normal thing?

Apr 20, 2005, 07:57 PM	#7
wiskerbizkit DH ***** hobo Join Date: Aug 2004 Location: Columbia SC Posts: 467 Rep Power: 0 System Specs	I've had that problem for months now and have never found a fix and its damn annoying too