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View Full Version : Where Anti-Aliasing Matters In AC4



Wrath2Zero
02-16-2014, 10:47 PM
Anti-Aliasing matters when it comes to a nice clean image but some AA methods do a bad job and are cheap for a reason.

FXAA(Fast Approximate Anti-Aliasing, Playstation 4 uses this as well and looks even worse at unpatched 900p)
http://i62.tinypic.com/5yg84w.png

SMAA (Enhanced Subpixel Morphological)
http://i62.tinypic.com/w8qamv.png

2xTXAA - NVIDIA GTX 600 series and above cards only (MSAA x4 quality + a custom post AA filter + temporal with the performance of MSAA x2)
http://i58.tinypic.com/2lx7az6.png

FXAA has horrible broken lines like the ropes of the ship are not even joined, even worse as the image moves. SMAA(probably using 2 samples) is nice and sharp though still has aliasing on lines, then those lines break when image is moving. 2xTXAA has the ropes mostly in intact and doesn't shimmer or flicker much at all when the image is in motion, i.e the ropes don't look broken while moving,

It's worth noting that MSAA(Multi Sample Anti-Aliasing) in this game seems to be worst than normal, one reason maybe that a post AA like FXAA is hard coded into it, which may explain why MSAA looks blurry when it shouldn't. These shots have been cropped from 1920x1080, png format and are not zoomed in.

Nitrotoluene
02-17-2014, 03:16 AM
WrATHZero, thanks for posting this, it is really helpful. I've never known what all those tech nerd abbreviations stood for, or what differences to expect, since game Options usually never explain them.

I tend to rely on GeForce Experience to optimise my game settings, and I see that it chose SMAA for AC4 Black Flag on my system (a GTX580). I've been satisfied with the graphics so far, but might try MSAA and see what it's like.

BTW: I think you mean "intact". :)

Wrath2Zero
02-17-2014, 05:24 AM
WrATHZero, thanks for posting this, it is really helpful. I've never known what all those tech nerd abbreviations stood for, or what differences to expect, since game Options usually never explain them.

I tend to rely on GeForce Experience to optimise my game settings, and I see that it chose SMAA for AC4 Black Flag on my system (a GTX580). I've been satisfied with the graphics so far, but might try MSAA and see what it's like.

BTW: I think you mean "intact". :)

Thanks, yeah damn typos. :)