Can someone post pics of the "shimmering" problem with 7800 cards?
- Thread starter BroadbandGamer
- Start date
You can't see it from pics. You have to watch it in action ie movement. If you don't see it then don't worry about it.
Throw on some games with wide open spaces, move through them.
At the mipmap transitions, there may or may not be a faint rippling effect in spots. It's not a big deal in the games I play, and as I'm having to tell you how to look, it probably isn't for you either. I never even noticed till I went looking.
Some would have you believe it's a big deal though, whether you see it or not.
moonboy403
Golden Member
- Aug 18, 2004
- 1,828
- 0
- 76
And I believe this is due to filtering less at some angles than others to increase speed, and it happens along the lines between texture resolutions?
AFAIK the R300 started this technique as a performance enhancement, and ATI has pretty much worked around the weaknesses of angle dependent AF in the interim. (or at least more than nV has at this point)
BFG10K
Lifer
- Aug 14, 2000
- 22,709
- 3,003
- 126
No, the G70's problem appears to stem from the fact that nVidia are taking more samples from the further mip-maps but less from the nearest ones which eases workload but causes the shimmering. The NV4x did not do this which is why it's essentially shimmer free at high quality.
The latest drivers appear to shift the bias back onto the larger mip-maps but it's unknown why the issue hasn't been totally resolved. Perhaps it's a combination of hardware and software that causes it.
The angle dependence is a totally separate issue.
The latest drivers appear to shift the bias back onto the larger mip-maps but it's unknown why the issue hasn't been totally resolved. Perhaps it's a combination of hardware and software that causes it.
The angle dependence is a totally separate issue.
My bad, thanks BFG.
I thought the angles along the mip transitions were part of it, but I will take your word they are not.
Wow Do you hate Rollo. He just stated the particular card that first used the technique that causes the shimmering issue. He didn't say it was responsible or that you even state that it even had the shimmering issue, he just happen to mention a technique and the card that first used. I say this twice because I can't for the life of me see anything pointing fingers to ATI. Maybe you deep down think that ATI is responsible and are afraid to admit it.
I didn't "blame" anyone. How is stating ATI began this technique of AF and has worked the problems out of it negative to ATI?
It would have been more accurate for you to have posted "Rollo has done nothing even slightly controversial here, so I'll just say he did and some of my Anti Rollo crew will jump on the bandwagon."
Pretty sad JiffyLube1024, I thought you were above that.
moonboy403
Golden Member
- Aug 18, 2004
- 1,828
- 0
- 76
haha human brain is funny thing
i watched the video, first time nothing bothered me.
then i read the part "look infront of gnome", and now all i see is the "shimmering" & bothered by it.
i watched the video, first time nothing bothered me.
then i read the part "look infront of gnome", and now all i see is the "shimmering" & bothered by it.
blckgrffn
Diamond Member
Yep, I have said it before and now I will say it again. The shimmering SUCKS and I HATE playing guild wars on my 5900SE rig (about ~$500 computer) and not on my $1,500 gaming rig. Watching my GF play on that comp while I suffer incredible texture issues (the ground shows up as grided textures instead of nicely blended ones every time that I change maps for a few seconds) and the shimmering. Yuck. I hope it gets fixed soon 
And it is a lot worse guild wars than WoW. Did you use FRAPS to take that movie?
Nat
And it is a lot worse guild wars than WoW. Did you use FRAPS to take that movie?
Nat
blckgrffn
Diamond Member
Do you see my point though? I just can't believe that it hasn't been fixed yet...
*edit - ugh. 81.85's made the gridded textures stay indefinitely know. Yuck, yuck, yuck.
I dl-ed that http://www.novicee.com/vids/WOW_Shimmer.avi video and I don't see what you mean. I do see green lines on the bottom but that is it. I watched the video 7times too.
The reason why I am asking this, is I think I am having a wierd probelm in doom3 and quake4 sometimes with the screen looking like it is being ripped apart and put back together again really fast.
The reason why I am asking this, is I think I am having a wierd probelm in doom3 and quake4 sometimes with the screen looking like it is being ripped apart and put back together again really fast.
Yes, i made the video in Fraps. Its a lot more noticeable in person and in the uncompressed vid, but i didnt feel like uploading a 200mb file
Darq MX - Turn V-sync on to get rid of your problem. It is not the same as shimmering.
Look infront of the gnome (right before the pathway) and look at the sparkle like effect on the ground. That is shimmering.
Darq MX - Turn V-sync on to get rid of your problem. It is not the same as shimmering.
Look infront of the gnome (right before the pathway) and look at the sparkle like effect on the ground. That is shimmering.
Derek made a point on the x1800 review.
Yes Rollo, please comment about this (please do not go back in time):
http://www.anandtech.com/video/showdoc.aspx?i=2552&p=5
" Starting with Area Anisotropic (or high quality AF as it is called in the driver), ATI has finally brought viewing angle independent anisotropic filtering to their hardware. NVIDIA introduced this feature back in the GeForce FX days, but everyone was so caught up in the FX series' abysmal performance that not many paid attention to the fact that the FX series had better quality anisotropic filtering than anything from ATI. Yes, the performance impact was larger, but NVIDIA hardware was differentiating the Euclidean distance calculation sqrt(x^2 + y^2 + z^2) in its anisotropic filtering algorithm. Current methods (NVIDIA stopped doing the quality way) simply differentiate an approximated distance in the form of (ax + by + cz). Math buffs will realize that the differential for this approximated distance simply involves constants while the partials for Euclidean distance are less trivial. Calculating a square root is a complex task, even in hardware, which explains the lower performance of the "quality AF" equation. "
[/quote]
There's very few people I hate in this world, and Rollo certainly isn't one of them.
Regarding the filtering, AFAIK this has nothing to do with the quick and dirty Anisotropic Filtering that Nvidia and ATI employ, and everything to do with specific optimizations in Nvidia cards in AF.
That's why I found it funny, he seemed to go off on a total tangent about angle-dependent AF, like "ATI started it..."
Initially, I didn't even know that this issue was caused by AF on NV cards, I thought it was something like BFG's explanation, but after looking into it a bit, it does appear to be an AF issue.
yea, I thought it had to be v-snyc related but you can't see if sometimes if you are someone else, you have to look real close. It is not tearing or there is not any lines you just see likr a quick blur in the middle like the picture is being ripped in 2 really quick and placed back together.
TRENDING THREADS
-
Discussion Zen 5 Speculation (EPYC Turin and Strix Point/Granite Ridge - Ryzen 9000)- Started by DisEnchantment
- Replies: 25K
-
Discussion Intel Meteor, Arrow, Lunar & Panther Lakes Discussion Threads
- Started by Tigerick
- Replies: 21K
-
Discussion Intel current and future Lakes & Rapids thread- Started by TheF34RChannel
- Replies: 23K
-
-
Facebook
Twitter