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Ambient occlusion: What it doesFollow

#1 Sep 07 2010 at 4:46 AM Rating: Good
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It does this:

Ambient occlusion off

Ambient occlusion on


Save both images and flip between them in photo viewer or whatever.

Note that the right side of the screen appears darker than it should thanks to a bug with FFXIV's ambient occlusion and ATI cards. (it causes a faint diagonal "shadow" across the screen)



Edited, Sep 7th 2010 7:50am by Lobivopis
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Final Fantasy XI 12-14-11 Update wrote:
Adjust the resolution of menus.
The main screen resolution for "FINAL FANTASY XI" is dependent on the "Overlay Graphics Resolution" setting.
If the Overlay Graphics Resolution is set higher than the Menu Resolution, menus will be automatically resized.


I thought of it first:

http://ffxi.allakhazam.com/forum.html?forum=10&mid=130073657654872218#20
#2 Sep 07 2010 at 4:55 AM Rating: Decent
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im glad the difference is suttle enough to know that we arent missing anything dire as far as aesthetics goes.
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#3 Sep 07 2010 at 4:58 AM Rating: Decent
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I can't see much difference besides the one being darker than the other and having a few graphical glitches. If this is caused by the ATI bug, maybe someone with a Nividia card can do a more accurate comparison.
#4 Sep 07 2010 at 6:38 AM Rating: Decent
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I thought the bug was Nvidia and ATI were fine?
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#5 Sep 07 2010 at 6:58 AM Rating: Good
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Tarutinkler wrote:
I thought the bug was Nvidia and ATI were fine?


Ambiant occlusion has bugs with ATI, it might have bugs with Nvidia too. I just assumed it was ATI.

Same images with the bugged part blocked out.

http://img46.imageshack.us/img46/2779/ambiantoff2.jpg

http://img443.imageshack.us/img443/8074/ambianton2.jpg


A more detailed explanation:

http://en.wikipedia.org/wiki/Ambient_occlusion







Edited, Sep 7th 2010 9:59am by Lobivopis
____________________________
Final Fantasy XI 12-14-11 Update wrote:
Adjust the resolution of menus.
The main screen resolution for "FINAL FANTASY XI" is dependent on the "Overlay Graphics Resolution" setting.
If the Overlay Graphics Resolution is set higher than the Menu Resolution, menus will be automatically resized.


I thought of it first:

http://ffxi.allakhazam.com/forum.html?forum=10&mid=130073657654872218#20
#6 Sep 07 2010 at 7:04 AM Rating: Good
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Thanks for this, I was at a loss as to what it really did, it's good to be in the know!
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#7 Sep 07 2010 at 7:04 AM Rating: Decent
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Here are a couple pics using nVidia Geforce GTX 460. It's not the exact same angle, but it's better than nothing. :P

AO off:
http://i104.photobucket.com/albums/m170/Threx93/1283863985.jpg

AO on:
http://i104.photobucket.com/albums/m170/Threx93/1283864161.jpg

Take a look at the vase that's on the ground to the right of the screen. You can see that with AO off, the entire vase is equally bright. With AO on, it's mostly bright on the top right and it fades to shadows to the bottom left. That's how AO works: it makes everything look more realistic by accentuating deep shadows.
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#8 Sep 07 2010 at 7:09 AM Rating: Good
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Threx wrote:
H That's how AO works: it makes everything look more realistic by accentuating deep shadows.


Actually it creates ambient shadows. It's a simplified form of global illumination, which is why it's such a performance hit.

How big of a framerate hit to you take on the 460 from enabling it compared to turning it off?


Edited, Sep 7th 2010 10:13am by Lobivopis
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Final Fantasy XI 12-14-11 Update wrote:
Adjust the resolution of menus.
The main screen resolution for "FINAL FANTASY XI" is dependent on the "Overlay Graphics Resolution" setting.
If the Overlay Graphics Resolution is set higher than the Menu Resolution, menus will be automatically resized.


I thought of it first:

http://ffxi.allakhazam.com/forum.html?forum=10&mid=130073657654872218#20
#9 Sep 07 2010 at 7:17 AM Rating: Good
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Lobivopis wrote:
Threx wrote:
H That's how AO works: it makes everything look more realistic by accentuating deep shadows.


Actually it creates ambient shadows. It's a simplified form of global illumination, which is why it's such a performance hit.

How big of a framerate hit to you take on the 460 from enabling it compared to turning it off?


Actually, if you want to get technical, it doesn't create shadows. It decreases light. :P

About the fps hit, I don't know, I didn't bother turning Afterburner on for the screenshots. I never have AO on, I only turned it on to take that single screenshot to post it for people to see here. :)
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#10 Sep 07 2010 at 7:19 AM Rating: Good
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All it does to me it cut my fps to half and make my UI, mouse and general game run sloooow and retarded.
Turning it off was like playing a completely new game. UI and mouse are completely fixed, the game runs perfectly and it looks gorgeous.

I'm playing on an ATI HD5770 btw.
#11 Sep 07 2010 at 7:23 AM Rating: Good
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I took a few pics to see myself the other day. Surprisingly on a Geforce 8800 GTS the performance hit is minimal, impacting the framerate by about 1-2fps

On

Off
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#12 Sep 07 2010 at 7:26 AM Rating: Good
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Good information. I'll have to double check whether or not I have it on or off.
#13 Sep 07 2010 at 5:25 PM Rating: Decent
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ditx wrote:
I took a few pics to see myself the other day. Surprisingly on a Geforce 8800 GTS the performance hit is minimal, impacting the framerate by about 1-2fps

On

Off


Yeah I don't think it's actually working that's why. I can't see any difference between those two images.


Do you have Pixel Shader 3.0 forced off?

Edited, Sep 7th 2010 8:28pm by Lobivopis
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Final Fantasy XI 12-14-11 Update wrote:
Adjust the resolution of menus.
The main screen resolution for "FINAL FANTASY XI" is dependent on the "Overlay Graphics Resolution" setting.
If the Overlay Graphics Resolution is set higher than the Menu Resolution, menus will be automatically resized.


I thought of it first:

http://ffxi.allakhazam.com/forum.html?forum=10&mid=130073657654872218#20
#14 Sep 07 2010 at 5:35 PM Rating: Good
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Basically it just makes soft gray shadowing near every place that 2 objects come near each other. For the CG illiterate.

Generally makes lighting seem just a little richer. Judging by these screens, they're using a prety weak effect that may not be worth the performance hit. Sometimes AO makes all the difference, I think in this case it's just a tiny improvement.
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#15 Sep 07 2010 at 5:39 PM Rating: Good
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I don't notice any decrease in FPS, so I just left it on.
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#16 Sep 07 2010 at 6:25 PM Rating: Decent
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I don't use it because it's so little of a difference. Anything that's a hit on my GPU, no matter how small, I will turn off if I don't think it's worth it. This is also why I have MSAA at 2x, I don't see a difference at 8x. Maybe it's my video card(ATI Radeon HD 5770 1GB Juniper XT) but the pixels never smooth out at all, thinking about turning it off because of this. I have CCC set to use application settings.
#17 Sep 07 2010 at 8:12 PM Rating: Decent
Edited by bsphil
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Lobivopis wrote:
Do you have Pixel Shader 3.0 forced off?
I've heard this twice now and heard how to do it on an ATi card 0 times.
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#18 Sep 07 2010 at 8:39 PM Rating: Decent
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ATI Tray Tools go to... one second. Tweaks -> Standard Tweaks.
It will have these two options:

Override Pixel Shader Version
Override Vertex Shader Version

Unfortunately, Pixel Shader can only be set to 2.1 and Vertex Shader can only be set to 2.0, other than this I am not sure if it affects anything I have not tried this program yet.
#19 Sep 07 2010 at 8:48 PM Rating: Decent
Edited by bsphil
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Excenmille wrote:

ATI Tray Tools go to... one second. Tweaks -> Standard Tweaks.
It will have these two options:

Override Pixel Shader Version
Override Vertex Shader Version

Unfortunately, Pixel Shader can only be set to 2.1 and Vertex Shader can only be set to 2.0, other than this I am not sure if it affects anything I have not tried this program yet.
Causes FFXIV to crash immediately.
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His Excellency Aethien wrote:
Almalieque wrote:
If no one debated with me, then I wouldn't post here anymore.
Take the hint guys, please take the hint.
gbaji wrote:
I'm not getting my news from anywhere Joph.
#20 Sep 07 2010 at 9:25 PM Rating: Good
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Quote:
Ambient occlusion: What it does


Don't forget. Other than graphical effects barely visible to the average human eye, it causes unbearable lag on machines which scored less than 3000 in the FFXIV benchmark...
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#21 Sep 07 2010 at 9:30 PM Rating: Decent
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...and believe me: even on those above ^.^/
Totally not worth it at the moment, but one of those things that will make FFXIV "futureproof" for a few years to come.
#22 Sep 07 2010 at 10:16 PM Rating: Decent
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bsphil wrote:
Excenmille wrote:

ATI Tray Tools go to... one second. Tweaks -> Standard Tweaks.
It will have these two options:

Override Pixel Shader Version
Override Vertex Shader Version

Unfortunately, Pixel Shader can only be set to 2.1 and Vertex Shader can only be set to 2.0, other than this I am not sure if it affects anything I have not tried this program yet.
Causes FFXIV to crash immediately.


Apparently it works on Nvidia cards, I imagine it must reduce the graphics quality though.
____________________________
Final Fantasy XI 12-14-11 Update wrote:
Adjust the resolution of menus.
The main screen resolution for "FINAL FANTASY XI" is dependent on the "Overlay Graphics Resolution" setting.
If the Overlay Graphics Resolution is set higher than the Menu Resolution, menus will be automatically resized.


I thought of it first:

http://ffxi.allakhazam.com/forum.html?forum=10&mid=130073657654872218#20
#23 Sep 13 2010 at 12:42 AM Rating: Decent
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GTX 260m; P8700 @ 2.53GHz, for anyone curious.

AO On
AO off
#24 Oct 09 2010 at 1:15 PM Rating: Decent
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it seems to be a decent hit on fps, im running an evga gtx 460 and i went from 35 fps with ambient on to around 45 with it off while barely noticing any difference
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