Xbox360, so where the hell is the AA?

[_leech_]

My 360 is running at 720p and my shots of the PC version were of the game at 1280x720 as well; so the comparison is quite vaild.

You have an EDTV, it can only display at 480p no matter what resolution you feed it.

 

[kyleb]

Well I know how many pixels my display has, it is my display and all; but beyond the fact that 480p is 720x480 max while my display is 852x480, what is your point?

 

[ihamoitc2005]

Aa

Well I know how many pixels my display has, it is my display and all; but beyond the fact that 480p is 720x480 max while my display is 852x480, what is your point?

If your console is sending 720P and your TV can show only 480P then maybe you get type of SSAA no?

 

[kyleb]

Sure, downsampleing is effectively supersampling. But that is beside the fact that the 360 itself clearly isn't doing any AA in that shot I posted while my PC does.

 

[Gubbi]

Sure, downsampleing is effectively supersampling.

Only if your TV is doing some kind of filtering on the 720p input. Point sampling a higher resolution signal would look like pants.

Cheers

 

[ihamoitc2005]

HD-compatible

Only if your TV is doing some kind of filtering on the 720p input. Point sampling a higher resolution signal would look like pants.

Cheers

HD-compatble EDTV will do this no?

 

[kyleb]

Heh, well it should be pretty obvious from the shots that I posted that it isn't using point sampling. Are there any TVs at all that don't use filtering to resample stuff, or were you just throwing that out there as a random comment?

 

[Laa-Yosh]

Well, it doesn't look like it'd be using ~2x supersampling either... An 1280*720 resolution image downscaled to 852*480 shouldn't look like that for sure.

 

[kyleb]

It does look like that becuse the scaling hardware on my display isn't intended to get rid of jaggies but rather to retain as much of the detail of higher resolution signals as it can. While haveing to downsample to the native resolution of my display does help smooth out the alaising a bit, I still need AA to smooth out the jaggies even on older games which I run at 1080p.

But I think you might be expecting too much from the downsampling in general. For instance, here is a screencap from the same spot, rendered at 720p with no AA and then downsampled to 480 lines in Photoshop using bicubic filtering:

http://www.sunflower.com/~kyleb/cod2ds.png

As you can see, Photoshop doesn't do a whole lot to get rid of the jaggies from such downsampling, and neither does my plasma.

 

[swanlee]

So your comparing a 480P TV shot to a high res PC shot? Uhh yea not exactly the same thing.

 

[kyleb]

Did you missread the thread or something? I have no clue what you are talking about.

 

[pegisys]

it's some bad scaling or somthing going on somewhere becasue the 360 version looks to have more aliasing then the PC shot with no AA

what inputs are you connecting them with ?

 

[kyleb]

I think difference in alaising you notice is just due to the difference in FOV between the two versions of the game, with the PC one being further back so the jaggies on the same parts are smaller since they apear further back in the view. Having played many PC games on the same display I use for my 360, I'm fairly certain that CoD2 is rendered at 1280x720.

 

[chachi]

I dont think COD2 even has HDR.

It could just be a higher contrast setting, but I don't think kyleb was doing any monitor tweaking between input sources. If you look at the shots, the 360 has obviously much greater range between lights & darks. Maybe the PC shot is just on a really overcast day.

You'd already notice the jaggies more on the 360 shot because of the bigger contrast but maybe the scaling hardware have more problems with that type of situation.

How about a few 480P shots from both versions so we get an idea what native res looks like? No big if you don't feel like it, it'd just be something kind of interesting to do while we're waiting for big announcements.

 

[Hardknock]

Check out the FN3 Demo. Unbelievably not a jaggy in sight!

 

[kyleb]

It could just be a higher contrast setting, but I don't think kyleb was doing any monitor tweaking between input sources. If you look at the shots, the 360 has obviously much greater range between lights & darks. Maybe the PC shot is just on a really overcast day.

You'd already notice the jaggies more on the 360 shot because of the bigger contrast but maybe the scaling hardware have more problems with that type of situation.

How about a few 480P shots from both versions so we get an idea what native res looks like? No big if you don't feel like it, it'd just be something kind of interesting to do while we're waiting for big announcements.

CoD2 on the 360 has plenty of AA and 480i/p, but it is obviously rendered at much lower resolution as well which looks particularly bad due to the lack of any anisotropic filtering. And on the PC it looks like it does in the shots i posted, but rendered at lower res. I'd post some pics, but it really isn't anything interesting to look at. I could also play with the contrast all day long, but that isn't going to change the fact that CoD2 has no AA when running at HD resolutions on the 360. If you want to see some pics of AA on a 360 title, I could post some shots of Condemned which has great AA and some respectable AF to boot.