Caporegime
- Joined
- 18 Sep 2009
- Posts
- 30,499
- Location
- Dormanstown.
Downsampling with AMD: Guide and Demonstration (Antialiasing Substitute)
- Thread starter Proto
- Start date
You see, the problem with those images is that they're the same physical size. Meaning that they had been super-sampled for comparison. If you took a screenshot from a downsampled render, it would come at full resolution.
You can force SSAA in most games. He's right to say that downsampling with lower scaling won't provide the same quality. It's certainly not comparable to post-processing methods, you're spot on with that.
Zero, it ran about 25-30ish on all of them. Installed a car mod though, and that murdered my FPS. I've re validated GTA IV and got the old cars back, so I'll have a look.
Bulldozer, quite a CPU bottleneck
Ssshhhh, I'm upgrading soon.
Well then this means you're already bottlenecked somewhere. As I could definitely notice a difference between 1920x1080 and 2560x1440 in performance.
Is there any way whatsoever to effect whether your hardware bottlenecks? I bought my machine on here pre-built (wish I went custom built, though) HD6850 + fx4100, should support eachother quite well, right?
Caporegime
- Joined
- 18 Sep 2009
- Posts
- 30,499
- Location
- Dormanstown.
Is there any way whatsoever to effect whether your hardware bottlenecks? I bought my machine on here pre-built (wish I went custom built, though) HD6850 + fx4100, should support eachother quite well, right?
The FX is a bottleneck with its sub 2007 IPC.
Had a Phenom II X2 here the other day, unlocked and clocked to an X4 at 4GHZ, that'd push that 6850 all day long.
The part where you compared it to a post processing technique. I know you are adamant on not even trying this but otherwise you will never really be able to make a meaningful judgement, either.
They are not the same physical size. You need to save to desktop to see the actual size. That's just how that particular image hosting site operates, which in many ways is useful for the purpose of a simple side-by-side comparison that was required for the guide.
Also you are correct in that SSAA downsampling are not entirely similar, this I have also stated throughout, however they are the most convenient to compare.
In fact supersampling can also at times introduce blur even though it has a much higher overhead due to the extra calculations. In the end downsampling is certainly not a complete substitute for supersampling and the fact that we are even discussing that shows the level of quality this method can provide. Though it is as good, and in many cases better than, any other method of antialiasing.
Last edited:
Caporegime
- Joined
- 18 Sep 2009
- Posts
- 30,499
- Location
- Dormanstown.
You mean loldozer.
And a CPU bottleneck isn't always a bad thing Omek.
In L4D my CPU's a bottleneck, a 4.8GHZ 2500K, although when I'm pushing almost 300 frames, it's a moot point.
No one in their right mind should buy a loldozer for gaming.
Bottlenecking 30fps isn't exactly good, though.
I didn't even know what an i5 or i7 was when I bought my PC. Meh, I'll have money to upgrade soon, a time burnt is a lesson learnt.
Caporegime
- Joined
- 18 Sep 2009
- Posts
- 30,499
- Location
- Dormanstown.
Time out.
Man of Honour
- Joined
- 21 Nov 2004
- Posts
- 47,027
Can we perhaps try to get through this discussion without the personal insults, bickering and baiting? Cheers 
Man of Honour
- Joined
- 16 May 2005
- Posts
- 31,297
- Location
- Manchester
Sure thing. So you're going to leave the various stuff on page 2 there then?
Man of Honour
- Joined
- 21 Nov 2004
- Posts
- 47,027
It will be dealt with
Man of Honour
- Joined
- 16 May 2005
- Posts
- 31,297
- Location
- Manchester
Okay. Thanks.
I just see them in 2 different sizes when I click on them. Maybe it's due to my monitor resolution being a bit higher?
Tried on 1080p and and yeah show as same size but surely the downsizing I see is being done by that website and not necessarily indicative of what you will see in game. Or I can right click and view images and let firefox do the downsampling. Either way the effect does looks underwhelming in the given pictures.
I saw a method for doing the same thing on Nvidia cards on a different forum and comparison shots there were using GTA IV (a particularly 'jaggy' game) and it did looks a little better but not by much.
Personally I'm not sold so I'll take the blur hit from FXAA myself
I just see them in 2 different sizes when I click on them. Maybe it's due to my monitor resolution being a bit higher?
Tried on 1080p and and yeah show as same size but surely the downsizing I see is being done by that website and not necessarily indicative of what you will see in game. Or I can right click and view images and let firefox do the downsampling. Either way the effect does looks underwhelming in the given pictures.
I saw a method for doing the same thing on Nvidia cards on a different forum and comparison shots there were using GTA IV (a particularly 'jaggy' game) and it did looks a little better but not by much.
Personally I'm not sold so I'll take the blur hit from FXAA myself
You need to save them to your desktop to do a proper comparison yourself. As explained in a previous post in this thread.
damn someone removed my post? 
(wasn't flaming or anything so hope it was by mistake)
I got this running and tried it on diablo3 looks so much better than the built in blurry antialiasing bliz put into the game, fps seems pretty stable aswell
Not really played it much for a week or two but definately an improvement
seems like this solution is going to be perfect for games with poor AA
(wasn't flaming or anything so hope it was by mistake)I got this running and tried it on diablo3
looks so much better than the built in blurry antialiasing bliz put into the game, fps seems pretty stable aswellNot really played it much for a week or two but definately an improvement
seems like this solution is going to be perfect for games with poor AA